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Reviewed-by: Christopher Obbard Signed-off-by: Shreeya Patel --- Changes in v5 :- - Added a missing closing bracket for the email Changes in v4 :- - No change Changes in v3 :- - No change Changes in v2 :- - Add a patch for MAINTAINERS file changes MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 7700208f6ccf..3960c3ca1849 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22768,6 +22768,14 @@ F: drivers/net/pcs/pcs-xpcs.c F: drivers/net/pcs/pcs-xpcs.h F: include/linux/pcs/pcs-xpcs.h +SYNOPSYS DESIGNWARE HDMI RX CONTROLLER DRIVER +M: Shreeya Patel +L: linux-media@vger.kernel.org +L: kernel@collabora.com +S: Maintained +F: Documentation/devicetree/bindings/media/snps,dw-hdmi-rx.yaml +F: drivers/media/platform/synopsys/hdmirx/* + SYNOPSYS DESIGNWARE I2C DRIVER M: Jarkko Nikula R: Andy Shevchenko From patchwork Mon Dec 9 20:02:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shreeya Patel X-Patchwork-Id: 848572 Received: from a7-29.smtp-out.eu-west-1.amazonses.com (a7-29.smtp-out.eu-west-1.amazonses.com [54.240.7.29]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4622C1990C9; 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a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=uku4taia5b5tsbglxyj6zym32efj7xqv; d=amazonses.com; t=1733774577; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Feedback-ID; bh=g2rLyWoXS71rdqeTigXVJ0FxGOsmw7uX8/0YX9PKCUA=; b=BTCdZot0Jrd4CyO+vPDbUu0lJD45Tfnf2m18rUpaYHtp7bvcZafe8De3fYvEdesT 6GZaKpaBrApxxtc0K/OpOEGg4ibKZdeVh8+2UHnCf/Ds/XVkdl755Q42fBUyWgkIkAn J1CWDnew1UvvXRsGYb8hyH6TYPY1NzgBNlYqYw/Q= From: Shreeya Patel To: heiko@sntech.de, mchehab@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, mturquette@baylibre.com, sboyd@kernel.org, p.zabel@pengutronix.de, jose.abreu@synopsys.com, nelson.costa@synopsys.com, shawn.wen@rock-chips.com, nicolas.dufresne@collabora.com, hverkuil@xs4all.nl, hverkuil-cisco@xs4all.nl Cc: kernel@collabora.com, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, shreeya.patel@collabora.com, dmitry.osipenko@collabora.com Subject: [PATCH v5 4/4] media: platform: synopsys: Add support for HDMI input driver Date: Mon, 9 Dec 2024 20:02:57 +0000 Message-ID: <01020193ad048ed5-ab2a1ef0-8ecf-468d-ad53-2f3b2d0035fc-000000@eu-west-1.amazonses.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241209200120.3228643-1-shreeya.patel@collabora.com> References: <20241209200120.3228643-1-shreeya.patel@collabora.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Feedback-ID: ::1.eu-west-1.YpP9ZbxnARFfy3Cb5pfsLd/pdsXBCNK0KEM7HforL4k=:AmazonSES X-SES-Outgoing: 2024.12.09-54.240.7.29 Add initial support for the Synopsys DesignWare HDMI RX Controller Driver used by Rockchip RK3588. The driver supports: - HDMI 1.4b and 2.0 modes (HDMI 4k@60Hz) - RGB888, YUV422, YUV444 and YCC420 pixel formats - CEC - EDID configuration The hardware also has Audio and HDCP capabilities, but these are not yet supported by the driver. Co-developed-by: Dingxian Wen Signed-off-by: Dingxian Wen Signed-off-by: Dmitry Osipenko Signed-off-by: Shreeya Patel --- Changes in v5 :- - Change the MODULE_DESCRIPTION - Add VIDEO_SYNOPSYS_HDMIRX as prefix to the default edid config - Drop the enabling of default edid in the Kconfig - Replace the default EDID with hdmi-4k-300mhz EDID produced by v4l2-ctl tool for better compatibility with various HDMI cables and adapters - Rework the write_edid and set_edid functions - During format change, retrieve the current pixel format, color depth, and AVI infoframe details instead of only detecting the format - Improve the logging mechanism and delays in the hdmirx_wait_signal_lock function - Fix the 4K@60 capturing for RGB format - Document what hdmirx_check_timing_valid function does - Rework the hdmirx_get_detected_timings function - Fix the NV16/24 size image value - Add the implementation from Benjamin Hoff to expose the ITC type to v4l2 - Remove all the firmware related code Changes in v4 :- - Create a separate config option for selecting the EDID and enable it by default - Improve the comment related to DV timings and move it to the side of hdmirx_get_detected_timings - Add 100ms delay before pulling the HPD high - Do not return the detected timings from VIDIOC_G_DV_TIMINGS - Drop the bus info from hdmirx_querycap - If *num_planes != 0 then return 0 in hdmirx_queue_setup - Set queue->min_queued_buffers to 1 - Drop q->allow_cache_hints = 0; as it's always 0 by default - Add a comment for q->dma_attrs = DMA_ATTR_FORCE_CONTIGUOUS; - Drop .read = vb2_fop_read as it's not supported by driver - Remove redundant edid_init_data_600M - Make HPD low when driver is loaded - Add support for reading AVI Infoframe - Remove msg_len checks from hdmirx_cec_transmit - Add info about the CEC compliance test in the cover letter - Add arbitration lost status - Validate the physical address inside the EDID Changes in v3 :- - Use v4l2-common helper functions Changes in v2 :- - Fix checkpatch --strict warnings - Rename resets, vo1-grf and HPD node names as per the DT changes drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 1 + drivers/media/platform/synopsys/Kconfig | 3 + drivers/media/platform/synopsys/Makefile | 2 + .../media/platform/synopsys/hdmirx/Kconfig | 27 + .../media/platform/synopsys/hdmirx/Makefile | 4 + .../platform/synopsys/hdmirx/snps_hdmirx.c | 2663 +++++++++++++++++ .../platform/synopsys/hdmirx/snps_hdmirx.h | 394 +++ .../synopsys/hdmirx/snps_hdmirx_cec.c | 283 ++ .../synopsys/hdmirx/snps_hdmirx_cec.h | 44 + 10 files changed, 3422 insertions(+) create mode 100644 drivers/media/platform/synopsys/Kconfig create mode 100644 drivers/media/platform/synopsys/Makefile create mode 100644 drivers/media/platform/synopsys/hdmirx/Kconfig create mode 100644 drivers/media/platform/synopsys/hdmirx/Makefile create mode 100644 drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c create mode 100644 drivers/media/platform/synopsys/hdmirx/snps_hdmirx.h create mode 100644 drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.c create mode 100644 drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.h diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 85d2627776b6..9287faafdce5 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -85,6 +85,7 @@ source "drivers/media/platform/rockchip/Kconfig" source "drivers/media/platform/samsung/Kconfig" source "drivers/media/platform/st/Kconfig" source "drivers/media/platform/sunxi/Kconfig" +source "drivers/media/platform/synopsys/Kconfig" source "drivers/media/platform/ti/Kconfig" source "drivers/media/platform/verisilicon/Kconfig" source "drivers/media/platform/via/Kconfig" diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index ace4e34483dd..6fd7db0541c7 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -28,6 +28,7 @@ obj-y += rockchip/ obj-y += samsung/ obj-y += st/ obj-y += sunxi/ +obj-y += synopsys/ obj-y += ti/ obj-y += verisilicon/ obj-y += via/ diff --git a/drivers/media/platform/synopsys/Kconfig b/drivers/media/platform/synopsys/Kconfig new file mode 100644 index 000000000000..4fd521f78425 --- /dev/null +++ b/drivers/media/platform/synopsys/Kconfig @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0-only + +source "drivers/media/platform/synopsys/hdmirx/Kconfig" diff --git a/drivers/media/platform/synopsys/Makefile b/drivers/media/platform/synopsys/Makefile new file mode 100644 index 000000000000..3b12c574dd67 --- /dev/null +++ b/drivers/media/platform/synopsys/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-y += hdmirx/ diff --git a/drivers/media/platform/synopsys/hdmirx/Kconfig b/drivers/media/platform/synopsys/hdmirx/Kconfig new file mode 100644 index 000000000000..3f96f6c97cf0 --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/Kconfig @@ -0,0 +1,27 @@ +# SPDX-License-Identifier: GPL-2.0 + +config VIDEO_SYNOPSYS_HDMIRX + tristate "Synopsys DesignWare HDMI Receiver driver" + depends on VIDEO_DEV + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select VIDEOBUF2_DMA_CONTIG + select CEC_CORE + select CEC_NOTIFIER + select HDMI + help + Support for Synopsys HDMI HDMI RX Controller. + This driver supports HDMI 2.0 version. + + To compile this driver as a module, choose M here. The module + will be called synopsys_hdmirx. + +config VIDEO_SYNOPSYS_HDMIRX_LOAD_DEFAULT_EDID + bool "Load default EDID" + depends on VIDEO_SYNOPSYS_HDMIRX + help + Preload default EDID (Extended Display Identification Data). + EDID contains information about the capabilities of the display, + such as supported resolutions, refresh rates, and audio formats. + + Enabling this option is recommended for a non-production use-cases. diff --git a/drivers/media/platform/synopsys/hdmirx/Makefile b/drivers/media/platform/synopsys/hdmirx/Makefile new file mode 100644 index 000000000000..2fa2d9e25300 --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 +synopsys-hdmirx-objs := snps_hdmirx.o snps_hdmirx_cec.o + +obj-$(CONFIG_VIDEO_SYNOPSYS_HDMIRX) += synopsys-hdmirx.o diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c new file mode 100644 index 000000000000..7b530b134c2d --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.c @@ -0,0 +1,2663 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 Collabora, Ltd. + * Author: Shreeya Patel + * + * Copyright (c) 2021 Rockchip Electronics Co. Ltd. + * Author: Dingxian Wen + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "snps_hdmirx.h" +#include "snps_hdmirx_cec.h" + +#define EDID_NUM_BLOCKS_MAX 2 +#define EDID_BLOCK_SIZE 128 +#define HDMIRX_PLANE_Y 0 +#define HDMIRX_PLANE_CBCR 1 +#define FILTER_FRAME_CNT 6 + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "debug level (0-3)"); + +enum hdmirx_pix_fmt { + HDMIRX_RGB888 = 0, + HDMIRX_YUV422 = 1, + HDMIRX_YUV444 = 2, + HDMIRX_YUV420 = 3, +}; + +enum ddr_store_fmt { + STORE_RGB888 = 0, + STORE_RGBA_ARGB, + STORE_YUV420_8BIT, + STORE_YUV420_10BIT, + STORE_YUV422_8BIT, + STORE_YUV422_10BIT, + STORE_YUV444_8BIT, + STORE_YUV420_16BIT = 8, + STORE_YUV422_16BIT = 9, +}; + +enum hdmirx_reg_attr { + HDMIRX_ATTR_RW = 0, + HDMIRX_ATTR_RO = 1, + HDMIRX_ATTR_WO = 2, + HDMIRX_ATTR_RE = 3, +}; + +enum { + HDMIRX_RST_A, + HDMIRX_RST_P, + HDMIRX_RST_REF, + HDMIRX_RST_BIU, + HDMIRX_NUM_RST, +}; + +static const char * const pix_fmt_str[] = { + "RGB888", + "YUV422", + "YUV444", + "YUV420", +}; + +struct hdmirx_buffer { + struct vb2_v4l2_buffer vb; + struct list_head queue; + u32 buff_addr[VIDEO_MAX_PLANES]; +}; + +struct hdmirx_stream { + struct snps_hdmirx_dev *hdmirx_dev; + struct video_device vdev; + struct vb2_queue buf_queue; + struct list_head buf_head; + struct hdmirx_buffer *curr_buf; + struct hdmirx_buffer *next_buf; + struct v4l2_pix_format_mplane pixm; + const struct v4l2_format_info *out_finfo; + struct mutex vlock; /* to lock resources associated with video buffer and video device */ + spinlock_t vbq_lock; /* to lock video buffer queue */ + bool stopping; + wait_queue_head_t wq_stopped; + u32 frame_idx; + u32 line_flag_int_cnt; + u32 irq_stat; +}; + +struct snps_hdmirx_dev { + struct device *dev; + struct device *codec_dev; + struct hdmirx_stream stream; + struct v4l2_device v4l2_dev; + struct v4l2_ctrl_handler hdl; + struct v4l2_ctrl *detect_tx_5v_ctrl; + struct v4l2_ctrl *rgb_range; + struct v4l2_ctrl *content_type; + struct v4l2_dv_timings timings; + struct gpio_desc *detect_5v_gpio; + struct delayed_work delayed_work_hotplug; + struct delayed_work delayed_work_res_change; + struct cec_notifier *cec_notifier; + struct hdmirx_cec *cec; + struct mutex stream_lock; /* to lock video stream capture */ + struct mutex work_lock; /* to lock the critical section of hotplug event */ + struct reset_control_bulk_data resets[HDMIRX_NUM_RST]; + struct clk_bulk_data *clks; + struct regmap *grf; + struct regmap *vo1_grf; + struct completion cr_write_done; + struct completion timer_base_lock; + struct completion avi_pkt_rcv; + enum hdmirx_pix_fmt pix_fmt; + void __iomem *regs; + int hdmi_irq; + int dma_irq; + int det_irq; + bool hpd_trigger_level_high; + bool tmds_clk_ratio; + u32 num_clks; + u32 edid_blocks_written; + u32 cur_fmt_fourcc; + u32 color_depth; + u8 edid[EDID_BLOCK_SIZE * 2]; + hdmi_codec_plugged_cb plugged_cb; + spinlock_t rst_lock; /* to lock register access */ +}; + +static const struct v4l2_dv_timings cea640x480 = V4L2_DV_BT_CEA_640X480P59_94; + +static const struct v4l2_dv_timings_cap hdmirx_timings_cap = { + .type = V4L2_DV_BT_656_1120, + .reserved = { 0 }, + V4L2_INIT_BT_TIMINGS(640, 4096, /* min/max width */ + 480, 2160, /* min/max height */ + 20000000, 600000000, /* min/max pixelclock */ + /* standards */ + V4L2_DV_BT_STD_CEA861, + /* capabilities */ + V4L2_DV_BT_CAP_PROGRESSIVE | + V4L2_DV_BT_CAP_INTERLACED) +}; + +static void hdmirx_writel(struct snps_hdmirx_dev *hdmirx_dev, int reg, u32 val) +{ + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + writel(val, hdmirx_dev->regs + reg); +} + +static u32 hdmirx_readl(struct snps_hdmirx_dev *hdmirx_dev, int reg) +{ + u32 val; + + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + val = readl(hdmirx_dev->regs + reg); + + return val; +} + +static void hdmirx_reset_dma(struct snps_hdmirx_dev *hdmirx_dev) +{ + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + reset_control_reset(hdmirx_dev->resets[0].rstc); +} + +static void hdmirx_update_bits(struct snps_hdmirx_dev *hdmirx_dev, int reg, + u32 mask, u32 data) +{ + u32 val; + + guard(spinlock_irqsave)(&hdmirx_dev->rst_lock); + + val = readl(hdmirx_dev->regs + reg) & ~mask; + val |= (data & mask); + writel(val, hdmirx_dev->regs + reg); +} + +static int hdmirx_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + if (fh->vdev->vfl_dir == VFL_DIR_RX) + return v4l2_src_change_event_subscribe(fh, sub); + break; + case V4L2_EVENT_CTRL: + return v4l2_ctrl_subscribe_event(fh, sub); + default: + break; + } + + return -EINVAL; +} + +static bool tx_5v_power_present(struct snps_hdmirx_dev *hdmirx_dev) +{ + const unsigned int detection_threshold = 7; + int val, i, cnt = 0; + bool ret; + + for (i = 0; i < 10; i++) { + usleep_range(1000, 1100); + val = gpiod_get_value(hdmirx_dev->detect_5v_gpio); + if (val > 0) + cnt++; + if (cnt >= detection_threshold) + break; + } + + ret = (cnt >= detection_threshold) ? true : false; + v4l2_dbg(3, debug, &hdmirx_dev->v4l2_dev, "%s: %d\n", __func__, ret); + + return ret; +} + +static bool signal_not_lock(struct snps_hdmirx_dev *hdmirx_dev) +{ + u32 mu_status, dma_st10, cmu_st; + + mu_status = hdmirx_readl(hdmirx_dev, MAINUNIT_STATUS); + dma_st10 = hdmirx_readl(hdmirx_dev, DMA_STATUS10); + cmu_st = hdmirx_readl(hdmirx_dev, CMU_STATUS); + + if ((mu_status & TMDSVALID_STABLE_ST) && + (dma_st10 & HDMIRX_LOCK) && + (cmu_st & TMDSQPCLK_LOCKED_ST)) + return false; + + return true; +} + +static void hdmirx_get_timings(struct snps_hdmirx_dev *hdmirx_dev, + struct v4l2_bt_timings *bt) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 hact, vact, htotal, vtotal, fps; + u32 hfp, hs, hbp, vfp, vs, vbp; + u32 val; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS2); + hact = (val >> 16) & 0xffff; + vact = val & 0xffff; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS3); + htotal = (val >> 16) & 0xffff; + vtotal = val & 0xffff; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS4); + hs = (val >> 16) & 0xffff; + vs = val & 0xffff; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS5); + hbp = (val >> 16) & 0xffff; + vbp = val & 0xffff; + + if (hdmirx_dev->pix_fmt == HDMIRX_YUV420) { + htotal *= 2; + hbp *= 2; + hs *= 2; + } + + hfp = htotal - hact - hs - hbp; + vfp = vtotal - vact - vs - vbp; + + fps = (bt->pixelclock + (htotal * vtotal) / 2) / (htotal * vtotal); + bt->width = hact; + bt->height = vact; + bt->hfrontporch = hfp; + bt->hsync = hs; + bt->hbackporch = hbp; + bt->vfrontporch = vfp; + bt->vsync = vs; + bt->vbackporch = vbp; + + v4l2_dbg(1, debug, v4l2_dev, "get timings from dma\n"); + v4l2_dbg(1, debug, v4l2_dev, + "act:%ux%u%s, total:%ux%u, fps:%u, pixclk:%llu\n", + bt->width, bt->height, bt->interlaced ? "i" : "p", + htotal, vtotal, fps, bt->pixelclock); + + v4l2_dbg(2, debug, v4l2_dev, + "hfp:%u, hact:%u, hs:%u, hbp:%u, vfp:%u, vact:%u, vs:%u, vbp:%u\n", + bt->hfrontporch, hact, bt->hsync, bt->hbackporch, + bt->vfrontporch, vact, bt->vsync, bt->vbackporch); + + if (bt->interlaced == V4L2_DV_INTERLACED) { + bt->height *= 2; + bt->il_vfrontporch = bt->vfrontporch; + bt->il_vsync = bt->vsync + 1; + bt->il_vbackporch = bt->vbackporch; + } +} + +static bool hdmirx_check_timing_valid(struct v4l2_bt_timings *bt) +{ + if (bt->width < 100 || bt->width > 5000 || + bt->height < 100 || bt->height > 5000) + return false; + + if (!bt->hsync || bt->hsync > 200 || + !bt->vsync || bt->vsync > 100) + return false; + + if (!bt->hbackporch || bt->hbackporch > 2000 || + !bt->vbackporch || bt->vbackporch > 2000) + return false; + + if (!bt->hfrontporch || bt->hfrontporch > 2000 || + !bt->vfrontporch || bt->vfrontporch > 2000) + return false; + + return true; +} + +static void hdmirx_toggle_polarity(struct snps_hdmirx_dev *hdmirx_dev) +{ + u32 val = hdmirx_readl(hdmirx_dev, DMA_CONFIG6); + + if (!(val & (VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN))) { + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, + VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN, + VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN); + hdmirx_update_bits(hdmirx_dev, VIDEO_CONFIG2, + VPROC_VSYNC_POL_OVR_VALUE | + VPROC_VSYNC_POL_OVR_EN | + VPROC_HSYNC_POL_OVR_VALUE | + VPROC_HSYNC_POL_OVR_EN, + VPROC_VSYNC_POL_OVR_EN | + VPROC_HSYNC_POL_OVR_EN); + return; + } + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, + VSYNC_TOGGLE_EN | HSYNC_TOGGLE_EN, 0); + + hdmirx_update_bits(hdmirx_dev, VIDEO_CONFIG2, + VPROC_VSYNC_POL_OVR_VALUE | + VPROC_VSYNC_POL_OVR_EN | + VPROC_HSYNC_POL_OVR_VALUE | + VPROC_HSYNC_POL_OVR_EN, 0); +} + +/* + * When querying DV timings during preview, if the DMA's timing is stable, + * we retrieve the timings directly from the DMA. However, if the current + * resolution is negative, obtaining the timing from CTRL may require a + * change in the sync polarity, potentially leading to DMA errors. + */ +static int hdmirx_get_detected_timings(struct snps_hdmirx_dev *hdmirx_dev, + struct v4l2_dv_timings *timings) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_bt_timings *bt = &timings->bt; + u32 val, tmdsqpclk_freq, pix_clk; + u32 field_type, deframer_st; + u64 tmp_data, tmds_clk; + bool is_dvi_mode; + int num_retries = 0; + int ret; + + mutex_lock(&hdmirx_dev->work_lock); +retry: + memset(timings, 0, sizeof(struct v4l2_dv_timings)); + timings->type = V4L2_DV_BT_656_1120; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS11); + field_type = (val & HDMIRX_TYPE_MASK) >> 7; + + if (field_type & BIT(0)) + bt->interlaced = V4L2_DV_INTERLACED; + else + bt->interlaced = V4L2_DV_PROGRESSIVE; + + deframer_st = hdmirx_readl(hdmirx_dev, DEFRAMER_STATUS); + is_dvi_mode = !(deframer_st & OPMODE_STS_MASK); + + tmdsqpclk_freq = hdmirx_readl(hdmirx_dev, CMU_TMDSQPCLK_FREQ); + tmds_clk = tmdsqpclk_freq * 4 * 1000; + tmp_data = tmds_clk * 24; + do_div(tmp_data, hdmirx_dev->color_depth); + pix_clk = tmp_data; + bt->pixelclock = pix_clk; + + if (hdmirx_dev->pix_fmt == HDMIRX_YUV420) + bt->pixelclock *= 2; + + hdmirx_get_timings(hdmirx_dev, bt); + + v4l2_dbg(2, debug, v4l2_dev, "tmds_clk:%llu, pix_clk:%d\n", tmds_clk, pix_clk); + v4l2_dbg(1, debug, v4l2_dev, "interlace:%d, fmt:%d, color:%d, mode:%s\n", + bt->interlaced, hdmirx_dev->pix_fmt, + hdmirx_dev->color_depth, + is_dvi_mode ? "dvi" : "hdmi"); + v4l2_dbg(2, debug, v4l2_dev, "deframer_st:%#x\n", deframer_st); + + /* + * Timing will be invalid until it's latched by HW or if signal's + * polarity doesn't match. + */ + if (!hdmirx_check_timing_valid(bt)) { + if (num_retries++ < 20) { + if (num_retries == 10) + hdmirx_toggle_polarity(hdmirx_dev); + + usleep_range(10 * 1000, 10 * 1100); + goto retry; + } + + ret = -ERANGE; + } else { + ret = 0; + } + + mutex_unlock(&hdmirx_dev->work_lock); + + return ret; +} + +static bool port_no_link(struct snps_hdmirx_dev *hdmirx_dev) +{ + return !tx_5v_power_present(hdmirx_dev); +} + +static int hdmirx_query_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + int ret; + + if (port_no_link(hdmirx_dev)) { + v4l2_err(v4l2_dev, "%s: port has no link\n", __func__); + return -ENOLINK; + } + + if (signal_not_lock(hdmirx_dev)) { + v4l2_err(v4l2_dev, "%s: signal is not locked\n", __func__); + return -ENOLCK; + } + + ret = hdmirx_get_detected_timings(hdmirx_dev, timings); + if (ret) + return ret; + + if (debug) + v4l2_print_dv_timings(hdmirx_dev->v4l2_dev.name, + "query_dv_timings: ", timings, false); + + if (!v4l2_valid_dv_timings(timings, &hdmirx_timings_cap, NULL, NULL)) { + v4l2_dbg(1, debug, v4l2_dev, "%s: timings out of range\n", __func__); + return -ERANGE; + } + + return 0; +} + +static void hdmirx_hpd_ctrl(struct snps_hdmirx_dev *hdmirx_dev, bool en) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(1, debug, v4l2_dev, "%s: %sable, hpd_trigger_level_high:%d\n", + __func__, en ? "en" : "dis", + hdmirx_dev->hpd_trigger_level_high); + + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, HPDLOW, en ? 0 : HPDLOW); + en = hdmirx_dev->hpd_trigger_level_high ? en : !en; + hdmirx_writel(hdmirx_dev, CORE_CONFIG, en); +} + +static void hdmirx_write_edid(struct snps_hdmirx_dev *hdmirx_dev, + struct v4l2_edid *edid) +{ + u32 edid_len = edid->blocks * EDID_BLOCK_SIZE; + char data[300]; + u32 i; + + memset(edid->reserved, 0, sizeof(edid->reserved)); + + cec_s_phys_addr_from_edid(hdmirx_dev->cec->adap, + (const struct edid *)edid->edid); + + memset(&hdmirx_dev->edid, 0, sizeof(hdmirx_dev->edid)); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG11, + EDID_READ_EN_MASK | + EDID_WRITE_EN_MASK | + EDID_SLAVE_ADDR_MASK, + EDID_READ_EN(0) | + EDID_WRITE_EN(1) | + EDID_SLAVE_ADDR(0x50)); + for (i = 0; i < edid_len; i++) + hdmirx_writel(hdmirx_dev, DMA_CONFIG10, edid->edid[i]); + + /* read out for debug */ + if (debug >= 2) { + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG11, + EDID_READ_EN_MASK | + EDID_WRITE_EN_MASK, + EDID_READ_EN(1) | + EDID_WRITE_EN(0)); + edid_len = edid_len > sizeof(data) ? sizeof(data) : edid_len; + memset(data, 0, sizeof(data)); + for (i = 0; i < edid_len; i++) + data[i] = hdmirx_readl(hdmirx_dev, DMA_STATUS14); + + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, data, + edid_len, false); + } + + /* + * You must set EDID_READ_EN & EDID_WRITE_EN bit to 0, + * when the read/write edid operation is completed.Otherwise, it + * will affect the reading and writing of other registers + */ + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG11, + EDID_READ_EN_MASK | EDID_WRITE_EN_MASK, + EDID_READ_EN(0) | EDID_WRITE_EN(0)); + + hdmirx_dev->edid_blocks_written = edid->blocks; + memcpy(&hdmirx_dev->edid, edid->edid, edid->blocks * EDID_BLOCK_SIZE); +} + +/* + * Before clearing interrupt, we need to read the interrupt status. + */ +static inline void hdmirx_clear_interrupt(struct snps_hdmirx_dev *hdmirx_dev, + u32 reg, u32 val) +{ + /* (interrupt status register) = (interrupt clear register) - 0x8 */ + hdmirx_readl(hdmirx_dev, reg - 0x8); + hdmirx_writel(hdmirx_dev, reg, val); +} + +static void hdmirx_interrupts_setup(struct snps_hdmirx_dev *hdmirx_dev, bool en) +{ + v4l2_dbg(1, debug, &hdmirx_dev->v4l2_dev, "%s: %sable\n", + __func__, en ? "en" : "dis"); + + disable_irq(hdmirx_dev->hdmi_irq); + + /* Note: In DVI mode, it needs to be written twice to take effect. */ + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_0_INT_CLEAR, 0xffffffff); + + if (en) { + hdmirx_update_bits(hdmirx_dev, MAINUNIT_0_INT_MASK_N, + TMDSQPCLK_OFF_CHG | TMDSQPCLK_LOCKED_CHG, + TMDSQPCLK_OFF_CHG | TMDSQPCLK_LOCKED_CHG); + hdmirx_update_bits(hdmirx_dev, MAINUNIT_2_INT_MASK_N, + TMDSVALID_STABLE_CHG, TMDSVALID_STABLE_CHG); + hdmirx_update_bits(hdmirx_dev, AVPUNIT_0_INT_MASK_N, + CED_DYN_CNT_CH2_IRQ | + CED_DYN_CNT_CH1_IRQ | + CED_DYN_CNT_CH0_IRQ, + CED_DYN_CNT_CH2_IRQ | + CED_DYN_CNT_CH1_IRQ | + CED_DYN_CNT_CH0_IRQ); + } else { + hdmirx_writel(hdmirx_dev, MAINUNIT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, MAINUNIT_2_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, AVPUNIT_0_INT_MASK_N, 0); + } + + enable_irq(hdmirx_dev->hdmi_irq); +} + +static void hdmirx_plugout(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, POWERPROVIDED, 0); + hdmirx_interrupts_setup(hdmirx_dev, false); + hdmirx_hpd_ctrl(hdmirx_dev, false); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, 0); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, 0); + hdmirx_reset_dma(hdmirx_dev); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, HDMI_DISABLE | PHY_RESET | + PHY_PDDQ, HDMI_DISABLE); + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG0, 0x0); + cancel_delayed_work(&hdmirx_dev->delayed_work_res_change); + + v4l2_ctrl_s_ctrl(hdmirx_dev->rgb_range, V4L2_DV_RGB_RANGE_AUTO); + v4l2_ctrl_s_ctrl(hdmirx_dev->content_type, V4L2_DV_IT_CONTENT_TYPE_NO_ITC); +} + +static int hdmirx_set_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + u16 phys_addr; + int ret; + + if (edid->pad) + return -EINVAL; + + if (edid->start_block) + return -EINVAL; + + if (edid->blocks > EDID_NUM_BLOCKS_MAX) { + edid->blocks = EDID_NUM_BLOCKS_MAX; + return -E2BIG; + } + + if (!edid->blocks) { + cec_phys_addr_invalidate(hdmirx_dev->cec->adap); + hdmirx_dev->edid_blocks_written = 0; + return 0; + } + + phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL); + ret = v4l2_phys_addr_validate(phys_addr, &phys_addr, NULL); + if (ret) + return ret; + + disable_irq(hdmirx_dev->hdmi_irq); + disable_irq(hdmirx_dev->dma_irq); + + if (tx_5v_power_present(hdmirx_dev)) + hdmirx_plugout(hdmirx_dev); + + hdmirx_hpd_ctrl(hdmirx_dev, false); + hdmirx_write_edid(hdmirx_dev, edid); + + enable_irq(hdmirx_dev->hdmi_irq); + enable_irq(hdmirx_dev->dma_irq); + + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(110)); + return 0; +} + +static int hdmirx_get_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + memset(edid->reserved, 0, sizeof(edid->reserved)); + + if (edid->pad) + return -EINVAL; + + if (!edid->start_block && !edid->blocks) { + edid->blocks = hdmirx_dev->edid_blocks_written; + return 0; + } + + if (!hdmirx_dev->edid_blocks_written) + return -ENODATA; + + if (edid->start_block >= hdmirx_dev->edid_blocks_written || !edid->blocks) + return -EINVAL; + + if (edid->start_block + edid->blocks > hdmirx_dev->edid_blocks_written) + edid->blocks = hdmirx_dev->edid_blocks_written - edid->start_block; + + memcpy(edid->edid, &hdmirx_dev->edid, edid->blocks * EDID_BLOCK_SIZE); + + v4l2_dbg(1, debug, v4l2_dev, "%s: read EDID:\n", __func__); + if (debug > 0) + print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, + edid->edid, edid->blocks * EDID_BLOCK_SIZE, false); + + return 0; +} + +static int hdmirx_g_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_fract fps; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) + return -EINVAL; + + fps = v4l2_calc_timeperframe(&hdmirx_dev->timings); + parm->parm.capture.timeperframe.numerator = fps.numerator; + parm->parm.capture.timeperframe.denominator = fps.denominator; + + return 0; +} + +static int hdmirx_dv_timings_cap(struct file *file, void *fh, + struct v4l2_dv_timings_cap *cap) +{ + *cap = hdmirx_timings_cap; + return 0; +} + +static int hdmirx_enum_dv_timings(struct file *file, void *_fh, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &hdmirx_timings_cap, NULL, NULL); +} + +static void hdmirx_scdc_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, I2C_SLAVE_CONFIG1, + I2C_SDA_OUT_HOLD_VALUE_QST_MASK | + I2C_SDA_IN_HOLD_VALUE_QST_MASK, + I2C_SDA_OUT_HOLD_VALUE_QST(0x80) | + I2C_SDA_IN_HOLD_VALUE_QST(0x15)); + hdmirx_update_bits(hdmirx_dev, SCDC_REGBANK_CONFIG0, + SCDC_SINKVERSION_QST_MASK, + SCDC_SINKVERSION_QST(1)); +} + +static int wait_reg_bit_status(struct snps_hdmirx_dev *hdmirx_dev, u32 reg, + u32 bit_mask, u32 expect_val, bool is_grf, + u32 ms) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 i, val; + + for (i = 0; i < ms; i++) { + if (is_grf) + regmap_read(hdmirx_dev->grf, reg, &val); + else + val = hdmirx_readl(hdmirx_dev, reg); + + if ((val & bit_mask) == expect_val) { + v4l2_dbg(2, debug, v4l2_dev, + "%s: i:%d, time: %dms\n", __func__, i, ms); + break; + } + usleep_range(1000, 1010); + } + + if (i == ms) + return -1; + + return 0; +} + +static int hdmirx_phy_register_write(struct snps_hdmirx_dev *hdmirx_dev, + u32 phy_reg, u32 val) +{ + struct device *dev = hdmirx_dev->dev; + + reinit_completion(&hdmirx_dev->cr_write_done); + /* clear irq status */ + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + /* en irq */ + hdmirx_update_bits(hdmirx_dev, MAINUNIT_2_INT_MASK_N, + PHYCREG_CR_WRITE_DONE, PHYCREG_CR_WRITE_DONE); + /* write phy reg addr */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG1, phy_reg); + /* write phy reg val */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG2, val); + /* config write enable */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONTROL, PHYCREG_CR_PARA_WRITE_P); + + if (!wait_for_completion_timeout(&hdmirx_dev->cr_write_done, + msecs_to_jiffies(20))) { + dev_err(dev, "%s wait cr write done failed\n", __func__); + return -1; + } + + return 0; +} + +static void hdmirx_tmds_clk_ratio_config(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 val; + + val = hdmirx_readl(hdmirx_dev, SCDC_REGBANK_STATUS1); + v4l2_dbg(3, debug, v4l2_dev, "%s: scdc_regbank_st:%#x\n", __func__, val); + hdmirx_dev->tmds_clk_ratio = (val & SCDC_TMDSBITCLKRATIO) > 0; + + if (hdmirx_dev->tmds_clk_ratio) { + v4l2_dbg(3, debug, v4l2_dev, "%s: HDMITX greater than 3.4Gbps\n", __func__); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, + TMDS_CLOCK_RATIO, TMDS_CLOCK_RATIO); + } else { + v4l2_dbg(3, debug, v4l2_dev, "%s: HDMITX less than 3.4Gbps\n", __func__); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, + TMDS_CLOCK_RATIO, 0); + } +} + +static void hdmirx_phy_config(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct device *dev = hdmirx_dev->dev; + + hdmirx_clear_interrupt(hdmirx_dev, SCDC_INT_CLEAR, 0xffffffff); + hdmirx_update_bits(hdmirx_dev, SCDC_INT_MASK_N, SCDCTMDSCCFG_CHG, + SCDCTMDSCCFG_CHG); + /* cr_para_clk 24M */ + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, REFFREQ_SEL_MASK, REFFREQ_SEL(0)); + /* rx data width 40bit valid */ + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, RXDATA_WIDTH, RXDATA_WIDTH); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_RESET, PHY_RESET); + usleep_range(100, 110); + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_RESET, 0); + usleep_range(100, 110); + /* select cr para interface */ + hdmirx_writel(hdmirx_dev, PHYCREG_CONFIG0, 0x3); + + if (wait_reg_bit_status(hdmirx_dev, SYS_GRF_SOC_STATUS1, + HDMIRXPHY_SRAM_INIT_DONE, + HDMIRXPHY_SRAM_INIT_DONE, true, 10)) + dev_err(dev, "%s: phy SRAM init failed\n", __func__); + + regmap_write(hdmirx_dev->grf, SYS_GRF_SOC_CON1, + (HDMIRXPHY_SRAM_EXT_LD_DONE << 16) | + HDMIRXPHY_SRAM_EXT_LD_DONE); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 3); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 3); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 2); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 0); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 1); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 0); + hdmirx_phy_register_write(hdmirx_dev, SUP_DIG_ANA_CREGS_SUP_ANA_NC, 0); + + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_3_REG, + CDR_SETTING_BOUNDARY_3_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_4_REG, + CDR_SETTING_BOUNDARY_4_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_5_REG, + CDR_SETTING_BOUNDARY_5_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_6_REG, + CDR_SETTING_BOUNDARY_6_DEFAULT); + hdmirx_phy_register_write(hdmirx_dev, + HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_7_REG, + CDR_SETTING_BOUNDARY_7_DEFAULT); + + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_PDDQ, 0); + if (wait_reg_bit_status(hdmirx_dev, PHY_STATUS, PDDQ_ACK, 0, false, 10)) + dev_err(dev, "%s: wait pddq ack failed\n", __func__); + + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, HDMI_DISABLE, 0); + if (wait_reg_bit_status(hdmirx_dev, PHY_STATUS, HDMI_DISABLE_ACK, 0, + false, 50)) + dev_err(dev, "%s: wait hdmi disable ack failed\n", __func__); + + hdmirx_tmds_clk_ratio_config(hdmirx_dev); +} + +static void hdmirx_controller_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + const unsigned long iref_clk_freq_hz = 428571429; + struct device *dev = hdmirx_dev->dev; + + reinit_completion(&hdmirx_dev->timer_base_lock); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + /* en irq */ + hdmirx_update_bits(hdmirx_dev, MAINUNIT_0_INT_MASK_N, + TIMER_BASE_LOCKED_IRQ, TIMER_BASE_LOCKED_IRQ); + /* write irefclk freq */ + hdmirx_writel(hdmirx_dev, GLOBAL_TIMER_REF_BASE, iref_clk_freq_hz); + + if (!wait_for_completion_timeout(&hdmirx_dev->timer_base_lock, + msecs_to_jiffies(20))) + dev_err(dev, "%s wait timer base lock failed\n", __func__); + + hdmirx_update_bits(hdmirx_dev, CMU_CONFIG0, + TMDSQPCLK_STABLE_FREQ_MARGIN_MASK | + AUDCLK_STABLE_FREQ_MARGIN_MASK, + TMDSQPCLK_STABLE_FREQ_MARGIN(2) | + AUDCLK_STABLE_FREQ_MARGIN(1)); + hdmirx_update_bits(hdmirx_dev, DESCRAND_EN_CONTROL, + SCRAMB_EN_SEL_QST_MASK, SCRAMB_EN_SEL_QST(1)); + hdmirx_update_bits(hdmirx_dev, CED_CONFIG, + CED_VIDDATACHECKEN_QST | + CED_DATAISCHECKEN_QST | + CED_GBCHECKEN_QST | + CED_CTRLCHECKEN_QST | + CED_CHLOCKMAXER_QST_MASK, + CED_VIDDATACHECKEN_QST | + CED_GBCHECKEN_QST | + CED_CTRLCHECKEN_QST | + CED_CHLOCKMAXER_QST(0x10)); + hdmirx_update_bits(hdmirx_dev, DEFRAMER_CONFIG0, + VS_REMAPFILTER_EN_QST | VS_FILTER_ORDER_QST_MASK, + VS_REMAPFILTER_EN_QST | VS_FILTER_ORDER_QST(0x3)); +} + +static void hdmirx_get_colordepth(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 val, color_depth_reg; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS11); + color_depth_reg = (val & HDMIRX_COLOR_DEPTH_MASK) >> 3; + + switch (color_depth_reg) { + case 0x4: + hdmirx_dev->color_depth = 24; + break; + case 0x5: + hdmirx_dev->color_depth = 30; + break; + case 0x6: + hdmirx_dev->color_depth = 36; + break; + case 0x7: + hdmirx_dev->color_depth = 48; + break; + default: + hdmirx_dev->color_depth = 24; + break; + } + + v4l2_dbg(1, debug, v4l2_dev, "%s: color_depth: %d, reg_val:%d\n", + __func__, hdmirx_dev->color_depth, color_depth_reg); +} + +static void hdmirx_get_pix_fmt(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 val; + + val = hdmirx_readl(hdmirx_dev, DMA_STATUS11); + hdmirx_dev->pix_fmt = val & HDMIRX_FORMAT_MASK; + + switch (hdmirx_dev->pix_fmt) { + case HDMIRX_RGB888: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_BGR24; + break; + case HDMIRX_YUV422: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_NV16; + break; + case HDMIRX_YUV444: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_NV24; + break; + case HDMIRX_YUV420: + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_NV12; + break; + default: + v4l2_err(v4l2_dev, + "%s: err pix_fmt: %d, set RGB888 as default\n", + __func__, hdmirx_dev->pix_fmt); + hdmirx_dev->pix_fmt = HDMIRX_RGB888; + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_BGR24; + break; + } + + v4l2_dbg(1, debug, v4l2_dev, "%s: pix_fmt: %s\n", __func__, + pix_fmt_str[hdmirx_dev->pix_fmt]); +} + +static void hdmirx_get_avi_infoframe(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + union hdmi_infoframe frame = {}; + int err, i, b, itr = 0; + u8 aviif[3 + 7 * 4]; + u32 val; + + aviif[itr++] = HDMI_INFOFRAME_TYPE_AVI; + val = hdmirx_readl(hdmirx_dev, PKTDEC_AVIIF_PH2_1); + aviif[itr++] = val & 0xff; + aviif[itr++] = (val >> 8) & 0xff; + + for (i = 0; i < 7; i++) { + val = hdmirx_readl(hdmirx_dev, PKTDEC_AVIIF_PB3_0 + 4 * i); + + for (b = 0; b < 4; b++) + aviif[itr++] = (val >> (8 * b)) & 0xff; + } + + err = hdmi_infoframe_unpack(&frame, aviif, sizeof(aviif)); + if (err) { + v4l2_err(v4l2_dev, "failed to unpack AVI infoframe\n"); + return; + } + + v4l2_ctrl_s_ctrl(hdmirx_dev->rgb_range, frame.avi.quantization_range); + + if (frame.avi.itc) + v4l2_ctrl_s_ctrl(hdmirx_dev->content_type, + frame.avi.content_type); + else + v4l2_ctrl_s_ctrl(hdmirx_dev->content_type, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC); +} + +static void hdmirx_format_change(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + static const struct v4l2_event ev_src_chg = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + + hdmirx_get_pix_fmt(hdmirx_dev); + hdmirx_get_colordepth(hdmirx_dev); + hdmirx_get_avi_infoframe(hdmirx_dev); + + v4l2_dbg(1, debug, v4l2_dev, "%s: queue res_chg_event\n", __func__); + v4l2_event_queue(&stream->vdev, &ev_src_chg); +} + +static void hdmirx_set_ddr_store_fmt(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + enum ddr_store_fmt store_fmt; + u32 dma_cfg1; + + switch (hdmirx_dev->pix_fmt) { + case HDMIRX_RGB888: + store_fmt = STORE_RGB888; + break; + case HDMIRX_YUV444: + store_fmt = STORE_YUV444_8BIT; + break; + case HDMIRX_YUV422: + store_fmt = STORE_YUV422_8BIT; + break; + case HDMIRX_YUV420: + store_fmt = STORE_YUV420_8BIT; + break; + default: + store_fmt = STORE_RGB888; + break; + } + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG1, + DDR_STORE_FORMAT_MASK, DDR_STORE_FORMAT(store_fmt)); + dma_cfg1 = hdmirx_readl(hdmirx_dev, DMA_CONFIG1); + v4l2_dbg(1, debug, v4l2_dev, "%s: pix_fmt: %s, DMA_CONFIG1:%#x\n", + __func__, pix_fmt_str[hdmirx_dev->pix_fmt], dma_cfg1); +} + +static void hdmirx_dma_config(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_set_ddr_store_fmt(hdmirx_dev); + + /* Note: uv_swap, rb can not swap, doc err */ + if (hdmirx_dev->cur_fmt_fourcc != V4L2_PIX_FMT_NV16) + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, RB_SWAP_EN, RB_SWAP_EN); + else + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, RB_SWAP_EN, 0); + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG7, + LOCK_FRAME_NUM_MASK, + LOCK_FRAME_NUM(2)); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG1, + UV_WID_MASK | Y_WID_MASK | ABANDON_EN, + UV_WID(1) | Y_WID(2) | ABANDON_EN); +} + +static void hdmirx_submodule_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + /* Note: if not config HDCP2_CONFIG, there will be some errors; */ + hdmirx_update_bits(hdmirx_dev, HDCP2_CONFIG, + HDCP2_SWITCH_OVR_VALUE | + HDCP2_SWITCH_OVR_EN, + HDCP2_SWITCH_OVR_EN); + hdmirx_scdc_init(hdmirx_dev); + hdmirx_controller_init(hdmirx_dev); +} + +static int hdmirx_enum_input(struct file *file, void *priv, + struct v4l2_input *input) +{ + if (input->index > 0) + return -EINVAL; + + input->type = V4L2_INPUT_TYPE_CAMERA; + input->std = 0; + strscpy(input->name, "HDMI IN", sizeof(input->name)); + input->capabilities = V4L2_IN_CAP_DV_TIMINGS; + + return 0; +} + +static int hdmirx_get_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int hdmirx_set_input(struct file *file, void *priv, unsigned int i) +{ + if (i) + return -EINVAL; + return 0; +} + +static void hdmirx_set_fmt(struct hdmirx_stream *stream, + struct v4l2_pix_format_mplane *pixm, bool try) +{ + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_bt_timings *bt = &hdmirx_dev->timings.bt; + const struct v4l2_format_info *finfo; + unsigned int imagesize = 0; + int i; + + memset(&pixm->plane_fmt[0], 0, sizeof(struct v4l2_plane_pix_format)); + finfo = v4l2_format_info(pixm->pixelformat); + if (!finfo) { + finfo = v4l2_format_info(V4L2_PIX_FMT_BGR24); + v4l2_dbg(1, debug, v4l2_dev, + "%s: set_fmt:%#x not supported, use def_fmt:%x\n", + __func__, pixm->pixelformat, finfo->format); + } + + if (!bt->width || !bt->height) + v4l2_dbg(1, debug, v4l2_dev, "%s: invalid resolution:%#xx%#x\n", + __func__, bt->width, bt->height); + + pixm->pixelformat = finfo->format; + pixm->width = bt->width; + pixm->height = bt->height; + pixm->num_planes = finfo->mem_planes; + pixm->quantization = V4L2_QUANTIZATION_DEFAULT; + pixm->colorspace = V4L2_COLORSPACE_SRGB; + pixm->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + + if (bt->interlaced == V4L2_DV_INTERLACED) + pixm->field = V4L2_FIELD_INTERLACED_TB; + else + pixm->field = V4L2_FIELD_NONE; + + memset(pixm->reserved, 0, sizeof(pixm->reserved)); + + v4l2_fill_pixfmt_mp(pixm, finfo->format, pixm->width, pixm->height); + + for (i = 0; i < finfo->comp_planes; i++) { + struct v4l2_plane_pix_format *plane_fmt; + int width, height, bpl, size, bpp = 0; + const unsigned int hw_align = 64; + + if (!i) { + width = pixm->width; + height = pixm->height; + } else { + width = pixm->width / finfo->hdiv; + height = pixm->height / finfo->vdiv; + } + + switch (finfo->format) { + case V4L2_PIX_FMT_NV24: + case V4L2_PIX_FMT_NV16: + case V4L2_PIX_FMT_NV12: + case V4L2_PIX_FMT_BGR24: + bpp = finfo->bpp[i]; + break; + default: + v4l2_dbg(1, debug, v4l2_dev, + "fourcc: %#x is not supported\n", + finfo->format); + break; + } + + bpl = ALIGN(width * bpp, hw_align); + size = bpl * height; + imagesize += size; + + if (finfo->mem_planes > i) { + /* Set bpl and size for each mplane */ + plane_fmt = pixm->plane_fmt + i; + plane_fmt->bytesperline = bpl; + plane_fmt->sizeimage = size; + } + + v4l2_dbg(1, debug, v4l2_dev, + "C-Plane %i size: %d, Total imagesize: %d\n", + i, size, imagesize); + } + + /* Convert to non-MPLANE format as we want to unify non-MPLANE and MPLANE */ + if (finfo->mem_planes == 1) + pixm->plane_fmt[0].sizeimage = imagesize; + + if (!try) { + stream->out_finfo = finfo; + stream->pixm = *pixm; + v4l2_dbg(1, debug, v4l2_dev, + "%s: req(%d, %d), out(%d, %d), fmt:%#x\n", __func__, + pixm->width, pixm->height, stream->pixm.width, + stream->pixm.height, finfo->format); + } +} + +static int hdmirx_enum_fmt_vid_cap_mplane(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + + if (f->index >= 1) + return -EINVAL; + + f->pixelformat = hdmirx_dev->cur_fmt_fourcc; + + return 0; +} + +static int hdmirx_s_fmt_vid_cap_mplane(struct file *file, + void *priv, struct v4l2_format *f) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (vb2_is_busy(&stream->buf_queue)) { + v4l2_err(v4l2_dev, "%s: queue busy\n", __func__); + return -EBUSY; + } + + hdmirx_set_fmt(stream, &f->fmt.pix_mp, false); + + return 0; +} + +static int hdmirx_g_fmt_vid_cap_mplane(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_pix_format_mplane pixm = {}; + + pixm.pixelformat = hdmirx_dev->cur_fmt_fourcc; + hdmirx_set_fmt(stream, &pixm, true); + f->fmt.pix_mp = pixm; + + return 0; +} + +static int hdmirx_g_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 dma_cfg1; + + *timings = hdmirx_dev->timings; + dma_cfg1 = hdmirx_readl(hdmirx_dev, DMA_CONFIG1); + v4l2_dbg(1, debug, v4l2_dev, "%s: pix_fmt: %s, DMA_CONFIG1:%#x\n", + __func__, pix_fmt_str[hdmirx_dev->pix_fmt], dma_cfg1); + + return 0; +} + +static int hdmirx_s_dv_timings(struct file *file, void *_fh, + struct v4l2_dv_timings *timings) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (!timings) + return -EINVAL; + + if (debug) + v4l2_print_dv_timings(hdmirx_dev->v4l2_dev.name, + "s_dv_timings: ", timings, false); + + if (!v4l2_valid_dv_timings(timings, &hdmirx_timings_cap, NULL, NULL)) { + v4l2_dbg(1, debug, v4l2_dev, + "%s: timings out of range\n", __func__); + return -ERANGE; + } + + /* Check if the timings are part of the CEA-861 timings. */ + v4l2_find_dv_timings_cap(timings, &hdmirx_timings_cap, 0, NULL, NULL); + + if (v4l2_match_dv_timings(&hdmirx_dev->timings, timings, 0, false)) { + v4l2_dbg(1, debug, v4l2_dev, "%s: no change\n", __func__); + return 0; + } + + /* + * Changing the timings implies a format change, which is not allowed + * while buffers for use with streaming have already been allocated. + */ + if (vb2_is_busy(&stream->buf_queue)) + return -EBUSY; + + hdmirx_dev->timings = *timings; + /* Update the internal format */ + hdmirx_set_fmt(stream, &stream->pixm, false); + + return 0; +} + +static int hdmirx_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct hdmirx_stream *stream = video_drvdata(file); + struct device *dev = stream->hdmirx_dev->dev; + + strscpy(cap->driver, dev->driver->name, sizeof(cap->driver)); + strscpy(cap->card, dev->driver->name, sizeof(cap->card)); + + return 0; +} + +static int hdmirx_queue_setup(struct vb2_queue *queue, + unsigned int *num_buffers, + unsigned int *num_planes, + unsigned int sizes[], + struct device *alloc_ctxs[]) +{ + struct hdmirx_stream *stream = vb2_get_drv_priv(queue); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + const struct v4l2_pix_format_mplane *pixm = NULL; + const struct v4l2_format_info *out_finfo; + u32 i, height; + + pixm = &stream->pixm; + out_finfo = stream->out_finfo; + + if (!out_finfo) { + v4l2_err(v4l2_dev, "%s: out_fmt not set\n", __func__); + return -EINVAL; + } + + if (*num_planes) { + if (*num_planes != pixm->num_planes) + return -EINVAL; + + for (i = 0; i < *num_planes; i++) + if (sizes[i] < pixm->plane_fmt[i].sizeimage) + return -EINVAL; + return 0; + } + + *num_planes = out_finfo->mem_planes; + height = pixm->height; + + for (i = 0; i < out_finfo->mem_planes; i++) + sizes[i] = pixm->plane_fmt[i].sizeimage; + + v4l2_dbg(1, debug, v4l2_dev, "%s: count %d, size %d\n", + v4l2_type_names[queue->type], *num_buffers, sizes[0]); + + return 0; +} + +/* + * The vb2_buffer are stored in hdmirx_buffer, in order to unify + * mplane buffer and none-mplane buffer. + */ +static void hdmirx_buf_queue(struct vb2_buffer *vb) +{ + const struct v4l2_pix_format_mplane *pixm; + const struct v4l2_format_info *out_finfo; + struct hdmirx_buffer *hdmirx_buf; + struct vb2_v4l2_buffer *vbuf; + struct hdmirx_stream *stream; + struct vb2_queue *queue; + unsigned long flags; + int i; + + vbuf = to_vb2_v4l2_buffer(vb); + hdmirx_buf = container_of(vbuf, struct hdmirx_buffer, vb); + queue = vb->vb2_queue; + stream = vb2_get_drv_priv(queue); + pixm = &stream->pixm; + out_finfo = stream->out_finfo; + + memset(hdmirx_buf->buff_addr, 0, sizeof(hdmirx_buf->buff_addr)); + + /* + * If mplanes > 1, every c-plane has its own m-plane, + * otherwise, multiple c-planes are in the same m-plane + */ + for (i = 0; i < out_finfo->mem_planes; i++) + hdmirx_buf->buff_addr[i] = vb2_dma_contig_plane_dma_addr(vb, i); + + if (out_finfo->mem_planes == 1) { + if (out_finfo->comp_planes == 1) { + hdmirx_buf->buff_addr[HDMIRX_PLANE_CBCR] = + hdmirx_buf->buff_addr[HDMIRX_PLANE_Y]; + } else { + for (i = 0; i < out_finfo->comp_planes - 1; i++) + hdmirx_buf->buff_addr[i + 1] = + hdmirx_buf->buff_addr[i] + + pixm->plane_fmt[i].bytesperline * + pixm->height; + } + } + + spin_lock_irqsave(&stream->vbq_lock, flags); + list_add_tail(&hdmirx_buf->queue, &stream->buf_head); + spin_unlock_irqrestore(&stream->vbq_lock, flags); +} + +static void return_all_buffers(struct hdmirx_stream *stream, + enum vb2_buffer_state state) +{ + struct hdmirx_buffer *buf, *tmp; + unsigned long flags; + + spin_lock_irqsave(&stream->vbq_lock, flags); + if (stream->curr_buf) + list_add_tail(&stream->curr_buf->queue, &stream->buf_head); + if (stream->next_buf && stream->next_buf != stream->curr_buf) + list_add_tail(&stream->next_buf->queue, &stream->buf_head); + stream->curr_buf = NULL; + stream->next_buf = NULL; + + list_for_each_entry_safe(buf, tmp, &stream->buf_head, queue) { + list_del(&buf->queue); + vb2_buffer_done(&buf->vb.vb2_buf, state); + } + spin_unlock_irqrestore(&stream->vbq_lock, flags); +} + +static void hdmirx_stop_streaming(struct vb2_queue *queue) +{ + struct hdmirx_stream *stream = vb2_get_drv_priv(queue); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + int ret; + + v4l2_dbg(1, debug, v4l2_dev, "stream start stopping\n"); + mutex_lock(&hdmirx_dev->stream_lock); + WRITE_ONCE(stream->stopping, true); + + /* wait last irq to return the buffer */ + ret = wait_event_timeout(stream->wq_stopped, !stream->stopping, + msecs_to_jiffies(500)); + if (!ret) + v4l2_dbg(1, debug, v4l2_dev, "%s: timeout waiting last irq\n", + __func__); + + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, 0); + return_all_buffers(stream, VB2_BUF_STATE_ERROR); + mutex_unlock(&hdmirx_dev->stream_lock); + v4l2_dbg(1, debug, v4l2_dev, "stream stopping finished\n"); +} + +static int hdmirx_start_streaming(struct vb2_queue *queue, unsigned int count) +{ + struct hdmirx_stream *stream = vb2_get_drv_priv(queue); + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_dv_timings timings = hdmirx_dev->timings; + struct v4l2_bt_timings *bt = &timings.bt; + unsigned long lock_flags = 0; + int line_flag; + + mutex_lock(&hdmirx_dev->stream_lock); + stream->frame_idx = 0; + stream->line_flag_int_cnt = 0; + stream->curr_buf = NULL; + stream->next_buf = NULL; + stream->irq_stat = 0; + + WRITE_ONCE(stream->stopping, false); + + spin_lock_irqsave(&stream->vbq_lock, lock_flags); + if (!stream->curr_buf) { + if (!list_empty(&stream->buf_head)) { + stream->curr_buf = list_first_entry(&stream->buf_head, + struct hdmirx_buffer, + queue); + list_del(&stream->curr_buf->queue); + } else { + stream->curr_buf = NULL; + } + } + spin_unlock_irqrestore(&stream->vbq_lock, lock_flags); + + if (!stream->curr_buf) { + mutex_unlock(&hdmirx_dev->stream_lock); + return -ENOMEM; + } + + v4l2_dbg(2, debug, v4l2_dev, + "%s: start_stream cur_buf y_addr:%#x, uv_addr:%#x\n", + __func__, stream->curr_buf->buff_addr[HDMIRX_PLANE_Y], + stream->curr_buf->buff_addr[HDMIRX_PLANE_CBCR]); + hdmirx_writel(hdmirx_dev, DMA_CONFIG2, + stream->curr_buf->buff_addr[HDMIRX_PLANE_Y]); + hdmirx_writel(hdmirx_dev, DMA_CONFIG3, + stream->curr_buf->buff_addr[HDMIRX_PLANE_CBCR]); + + if (bt->height) { + if (bt->interlaced == V4L2_DV_INTERLACED) + line_flag = bt->height / 4; + else + line_flag = bt->height / 2; + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG7, + LINE_FLAG_NUM_MASK, + LINE_FLAG_NUM(line_flag)); + } else { + v4l2_err(v4l2_dev, "height err: %d\n", bt->height); + } + + hdmirx_writel(hdmirx_dev, DMA_CONFIG5, 0xffffffff); + hdmirx_writel(hdmirx_dev, CED_DYN_CONTROL, 0x1); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, HDMIRX_DMA_EN); + v4l2_dbg(1, debug, v4l2_dev, "%s: enable dma", __func__); + mutex_unlock(&hdmirx_dev->stream_lock); + + return 0; +} + +/* vb2 queue */ +static const struct vb2_ops hdmirx_vb2_ops = { + .queue_setup = hdmirx_queue_setup, + .buf_queue = hdmirx_buf_queue, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .stop_streaming = hdmirx_stop_streaming, + .start_streaming = hdmirx_start_streaming, +}; + +static int hdmirx_init_vb2_queue(struct vb2_queue *q, + struct hdmirx_stream *stream, + enum v4l2_buf_type buf_type) +{ + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + + q->type = buf_type; + q->io_modes = VB2_MMAP | VB2_DMABUF; + q->drv_priv = stream; + q->ops = &hdmirx_vb2_ops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct hdmirx_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->lock = &stream->vlock; + q->dev = hdmirx_dev->dev; + q->min_queued_buffers = 1; + + return vb2_queue_init(q); +} + +/* video device */ +static const struct v4l2_ioctl_ops hdmirx_v4l2_ioctl_ops = { + .vidioc_querycap = hdmirx_querycap, + .vidioc_try_fmt_vid_cap_mplane = hdmirx_g_fmt_vid_cap_mplane, + .vidioc_s_fmt_vid_cap_mplane = hdmirx_s_fmt_vid_cap_mplane, + .vidioc_g_fmt_vid_cap_mplane = hdmirx_g_fmt_vid_cap_mplane, + .vidioc_enum_fmt_vid_cap = hdmirx_enum_fmt_vid_cap_mplane, + + .vidioc_s_dv_timings = hdmirx_s_dv_timings, + .vidioc_g_dv_timings = hdmirx_g_dv_timings, + .vidioc_enum_dv_timings = hdmirx_enum_dv_timings, + .vidioc_query_dv_timings = hdmirx_query_dv_timings, + .vidioc_dv_timings_cap = hdmirx_dv_timings_cap, + .vidioc_enum_input = hdmirx_enum_input, + .vidioc_g_input = hdmirx_get_input, + .vidioc_s_input = hdmirx_set_input, + .vidioc_g_edid = hdmirx_get_edid, + .vidioc_s_edid = hdmirx_set_edid, + .vidioc_g_parm = hdmirx_g_parm, + + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + + .vidioc_log_status = v4l2_ctrl_log_status, + .vidioc_subscribe_event = hdmirx_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static const struct v4l2_file_operations hdmirx_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .unlocked_ioctl = video_ioctl2, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, +}; + +static int hdmirx_register_stream_vdev(struct hdmirx_stream *stream) +{ + struct snps_hdmirx_dev *hdmirx_dev = stream->hdmirx_dev; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct video_device *vdev = &stream->vdev; + int ret = 0; + + strscpy(vdev->name, "stream_hdmirx", sizeof(vdev->name)); + INIT_LIST_HEAD(&stream->buf_head); + spin_lock_init(&stream->vbq_lock); + mutex_init(&stream->vlock); + init_waitqueue_head(&stream->wq_stopped); + stream->curr_buf = NULL; + stream->next_buf = NULL; + + vdev->ioctl_ops = &hdmirx_v4l2_ioctl_ops; + vdev->release = video_device_release_empty; + vdev->fops = &hdmirx_fops; + vdev->minor = -1; + vdev->v4l2_dev = v4l2_dev; + vdev->lock = &stream->vlock; + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | + V4L2_CAP_STREAMING; + video_set_drvdata(vdev, stream); + vdev->vfl_dir = VFL_DIR_RX; + + hdmirx_init_vb2_queue(&stream->buf_queue, stream, + V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE); + vdev->queue = &stream->buf_queue; + + ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); + if (ret < 0) { + v4l2_err(v4l2_dev, "video_register_device failed: %d\n", ret); + return ret; + } + + return 0; +} + +static void process_signal_change(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG6, HDMIRX_DMA_EN, 0); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, 0); + hdmirx_reset_dma(hdmirx_dev); + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_res_change, + msecs_to_jiffies(50)); +} + +static void avpunit_0_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (status & (CED_DYN_CNT_CH2_IRQ | + CED_DYN_CNT_CH1_IRQ | + CED_DYN_CNT_CH0_IRQ)) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: avp0_st:%#x\n", + __func__, status); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_writel(hdmirx_dev, AVPUNIT_0_INT_FORCE, 0x0); +} + +static void avpunit_1_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + if (status & DEFRAMER_VSYNC_THR_REACHED_IRQ) { + v4l2_dbg(2, debug, v4l2_dev, + "Vertical Sync threshold reached interrupt %#x", status); + hdmirx_update_bits(hdmirx_dev, AVPUNIT_1_INT_MASK_N, + DEFRAMER_VSYNC_THR_REACHED_MASK_N, 0); + *handled = true; + } +} + +static void mainunit_0_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "mu0_st:%#x\n", status); + if (status & TIMER_BASE_LOCKED_IRQ) { + hdmirx_update_bits(hdmirx_dev, MAINUNIT_0_INT_MASK_N, + TIMER_BASE_LOCKED_IRQ, 0); + complete(&hdmirx_dev->timer_base_lock); + *handled = true; + } + + if (status & TMDSQPCLK_OFF_CHG) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: TMDSQPCLK_OFF_CHG\n", __func__); + *handled = true; + } + + if (status & TMDSQPCLK_LOCKED_CHG) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: TMDSQPCLK_LOCKED_CHG\n", __func__); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_writel(hdmirx_dev, MAINUNIT_0_INT_FORCE, 0x0); +} + +static void mainunit_2_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "mu2_st:%#x\n", status); + if (status & PHYCREG_CR_WRITE_DONE) { + hdmirx_update_bits(hdmirx_dev, MAINUNIT_2_INT_MASK_N, + PHYCREG_CR_WRITE_DONE, 0); + complete(&hdmirx_dev->cr_write_done); + *handled = true; + } + + if (status & TMDSVALID_STABLE_CHG) { + process_signal_change(hdmirx_dev); + v4l2_dbg(2, debug, v4l2_dev, "%s: TMDSVALID_STABLE_CHG\n", __func__); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_writel(hdmirx_dev, MAINUNIT_2_INT_FORCE, 0x0); +} + +static void pkt_2_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "%s: pk2_st:%#x\n", __func__, status); + if (status & PKTDEC_AVIIF_RCV_IRQ) { + hdmirx_update_bits(hdmirx_dev, PKT_2_INT_MASK_N, + PKTDEC_AVIIF_RCV_IRQ, 0); + complete(&hdmirx_dev->avi_pkt_rcv); + v4l2_dbg(2, debug, v4l2_dev, "%s: AVIIF_RCV_IRQ\n", __func__); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, PKT_2_INT_CLEAR, 0xffffffff); +} + +static void scdc_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + int status, bool *handled) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + v4l2_dbg(2, debug, v4l2_dev, "%s: scdc_st:%#x\n", __func__, status); + if (status & SCDCTMDSCCFG_CHG) { + hdmirx_tmds_clk_ratio_config(hdmirx_dev); + *handled = true; + } + + hdmirx_clear_interrupt(hdmirx_dev, SCDC_INT_CLEAR, 0xffffffff); +} + +static irqreturn_t hdmirx_hdmi_irq_handler(int irq, void *dev_id) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_id; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 mu0_st, mu2_st, pk2_st, scdc_st, avp1_st, avp0_st; + u32 mu0_mask, mu2_mask, pk2_mask, scdc_mask, avp1_msk, avp0_msk; + bool handled = false; + + mu0_mask = hdmirx_readl(hdmirx_dev, MAINUNIT_0_INT_MASK_N); + mu2_mask = hdmirx_readl(hdmirx_dev, MAINUNIT_2_INT_MASK_N); + pk2_mask = hdmirx_readl(hdmirx_dev, PKT_2_INT_MASK_N); + scdc_mask = hdmirx_readl(hdmirx_dev, SCDC_INT_MASK_N); + mu0_st = hdmirx_readl(hdmirx_dev, MAINUNIT_0_INT_STATUS); + mu2_st = hdmirx_readl(hdmirx_dev, MAINUNIT_2_INT_STATUS); + pk2_st = hdmirx_readl(hdmirx_dev, PKT_2_INT_STATUS); + scdc_st = hdmirx_readl(hdmirx_dev, SCDC_INT_STATUS); + avp0_st = hdmirx_readl(hdmirx_dev, AVPUNIT_0_INT_STATUS); + avp1_st = hdmirx_readl(hdmirx_dev, AVPUNIT_1_INT_STATUS); + avp0_msk = hdmirx_readl(hdmirx_dev, AVPUNIT_0_INT_MASK_N); + avp1_msk = hdmirx_readl(hdmirx_dev, AVPUNIT_1_INT_MASK_N); + mu0_st &= mu0_mask; + mu2_st &= mu2_mask; + pk2_st &= pk2_mask; + avp1_st &= avp1_msk; + avp0_st &= avp0_msk; + scdc_st &= scdc_mask; + + if (avp0_st) + avpunit_0_int_handler(hdmirx_dev, avp0_st, &handled); + if (avp1_st) + avpunit_1_int_handler(hdmirx_dev, avp1_st, &handled); + if (mu0_st) + mainunit_0_int_handler(hdmirx_dev, mu0_st, &handled); + if (mu2_st) + mainunit_2_int_handler(hdmirx_dev, mu2_st, &handled); + if (pk2_st) + pkt_2_int_handler(hdmirx_dev, pk2_st, &handled); + if (scdc_st) + scdc_int_handler(hdmirx_dev, scdc_st, &handled); + + if (!handled) { + v4l2_dbg(2, debug, v4l2_dev, "%s: hdmi irq not handled", __func__); + v4l2_dbg(2, debug, v4l2_dev, + "avp0:%#x, avp1:%#x, mu0:%#x, mu2:%#x, pk2:%#x, scdc:%#x\n", + avp0_st, avp1_st, mu0_st, mu2_st, pk2_st, scdc_st); + } + + v4l2_dbg(2, debug, v4l2_dev, "%s: en_fiq", __func__); + + return handled ? IRQ_HANDLED : IRQ_NONE; +} + +static void hdmirx_vb_done(struct hdmirx_stream *stream, + struct vb2_v4l2_buffer *vb_done) +{ + const struct v4l2_format_info *finfo = stream->out_finfo; + u32 i; + + /* Dequeue a filled buffer */ + for (i = 0; i < finfo->mem_planes; i++) { + vb2_set_plane_payload(&vb_done->vb2_buf, i, + stream->pixm.plane_fmt[i].sizeimage); + } + + vb_done->vb2_buf.timestamp = ktime_get_ns(); + vb2_buffer_done(&vb_done->vb2_buf, VB2_BUF_STATE_DONE); +} + +static void dma_idle_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + bool *handled) +{ + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_dv_timings timings = hdmirx_dev->timings; + struct v4l2_bt_timings *bt = &timings.bt; + struct vb2_v4l2_buffer *vb_done = NULL; + + if (!(stream->irq_stat) && !(stream->irq_stat & LINE_FLAG_INT_EN)) + v4l2_dbg(1, debug, v4l2_dev, + "%s: last time have no line_flag_irq\n", __func__); + + if (stream->line_flag_int_cnt <= FILTER_FRAME_CNT) + goto DMA_IDLE_OUT; + + if (bt->interlaced != V4L2_DV_INTERLACED || + !(stream->line_flag_int_cnt % 2)) { + if (stream->next_buf) { + if (stream->curr_buf) + vb_done = &stream->curr_buf->vb; + + if (vb_done) { + vb_done->vb2_buf.timestamp = ktime_get_ns(); + vb_done->sequence = stream->frame_idx; + + if (bt->interlaced) + vb_done->field = V4L2_FIELD_INTERLACED_TB; + else + vb_done->field = V4L2_FIELD_NONE; + + hdmirx_vb_done(stream, vb_done); + stream->frame_idx++; + if (stream->frame_idx == 30) + v4l2_dbg(1, debug, v4l2_dev, + "rcv frames\n"); + } + + stream->curr_buf = NULL; + if (stream->next_buf) { + stream->curr_buf = stream->next_buf; + stream->next_buf = NULL; + } + } else { + v4l2_dbg(3, debug, v4l2_dev, + "%s: next_buf NULL, skip vb_done\n", __func__); + } + } + +DMA_IDLE_OUT: + *handled = true; +} + +static void line_flag_int_handler(struct snps_hdmirx_dev *hdmirx_dev, + bool *handled) +{ + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + struct v4l2_dv_timings timings = hdmirx_dev->timings; + struct v4l2_bt_timings *bt = &timings.bt; + u32 dma_cfg6; + + stream->line_flag_int_cnt++; + if (!(stream->irq_stat) && !(stream->irq_stat & HDMIRX_DMA_IDLE_INT)) + v4l2_dbg(1, debug, v4l2_dev, + "%s: last have no dma_idle_irq\n", __func__); + dma_cfg6 = hdmirx_readl(hdmirx_dev, DMA_CONFIG6); + if (!(dma_cfg6 & HDMIRX_DMA_EN)) { + v4l2_dbg(2, debug, v4l2_dev, "%s: dma not on\n", __func__); + goto LINE_FLAG_OUT; + } + + if (stream->line_flag_int_cnt <= FILTER_FRAME_CNT) + goto LINE_FLAG_OUT; + + if (bt->interlaced != V4L2_DV_INTERLACED || + !(stream->line_flag_int_cnt % 2)) { + if (!stream->next_buf) { + spin_lock(&stream->vbq_lock); + if (!list_empty(&stream->buf_head)) { + stream->next_buf = list_first_entry(&stream->buf_head, + struct hdmirx_buffer, + queue); + list_del(&stream->next_buf->queue); + } else { + stream->next_buf = NULL; + } + spin_unlock(&stream->vbq_lock); + + if (stream->next_buf) { + hdmirx_writel(hdmirx_dev, DMA_CONFIG2, + stream->next_buf->buff_addr[HDMIRX_PLANE_Y]); + hdmirx_writel(hdmirx_dev, DMA_CONFIG3, + stream->next_buf->buff_addr[HDMIRX_PLANE_CBCR]); + } else { + v4l2_dbg(3, debug, v4l2_dev, + "%s: no buffer is available\n", __func__); + } + } + } else { + v4l2_dbg(3, debug, v4l2_dev, "%s: interlace:%d, line_flag_int_cnt:%d\n", + __func__, bt->interlaced, stream->line_flag_int_cnt); + } + +LINE_FLAG_OUT: + *handled = true; +} + +static irqreturn_t hdmirx_dma_irq_handler(int irq, void *dev_id) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_id; + struct hdmirx_stream *stream = &hdmirx_dev->stream; + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 dma_stat1, dma_stat13; + bool handled = false; + + dma_stat1 = hdmirx_readl(hdmirx_dev, DMA_STATUS1); + dma_stat13 = hdmirx_readl(hdmirx_dev, DMA_STATUS13); + v4l2_dbg(3, debug, v4l2_dev, "dma_irq st1:%#x, st13:%d\n", + dma_stat1, dma_stat13); + + if (READ_ONCE(stream->stopping)) { + v4l2_dbg(1, debug, v4l2_dev, "%s: stop stream\n", __func__); + hdmirx_writel(hdmirx_dev, DMA_CONFIG5, 0xffffffff); + hdmirx_update_bits(hdmirx_dev, DMA_CONFIG4, + LINE_FLAG_INT_EN | + HDMIRX_DMA_IDLE_INT | + HDMIRX_LOCK_DISABLE_INT | + LAST_FRAME_AXI_UNFINISH_INT_EN | + FIFO_OVERFLOW_INT_EN | + FIFO_UNDERFLOW_INT_EN | + HDMIRX_AXI_ERROR_INT_EN, 0); + WRITE_ONCE(stream->stopping, false); + wake_up(&stream->wq_stopped); + return IRQ_HANDLED; + } + + if (dma_stat1 & HDMIRX_DMA_IDLE_INT) + dma_idle_int_handler(hdmirx_dev, &handled); + + if (dma_stat1 & LINE_FLAG_INT_EN) + line_flag_int_handler(hdmirx_dev, &handled); + + if (!handled) + v4l2_dbg(3, debug, v4l2_dev, + "%s: dma irq not handled, dma_stat1:%#x\n", + __func__, dma_stat1); + + stream->irq_stat = dma_stat1; + hdmirx_writel(hdmirx_dev, DMA_CONFIG5, 0xffffffff); + + return IRQ_HANDLED; +} + +static int hdmirx_wait_signal_lock(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + u32 mu_status, scdc_status, dma_st10, cmu_st; + u32 i; + + for (i = 0; i < 300; i++) { + mu_status = hdmirx_readl(hdmirx_dev, MAINUNIT_STATUS); + scdc_status = hdmirx_readl(hdmirx_dev, SCDC_REGBANK_STATUS3); + dma_st10 = hdmirx_readl(hdmirx_dev, DMA_STATUS10); + cmu_st = hdmirx_readl(hdmirx_dev, CMU_STATUS); + + if ((mu_status & TMDSVALID_STABLE_ST) && + (dma_st10 & HDMIRX_LOCK) && + (cmu_st & TMDSQPCLK_LOCKED_ST)) + break; + + if (!tx_5v_power_present(hdmirx_dev)) { + v4l2_dbg(1, debug, v4l2_dev, + "%s: HDMI pull out, return\n", __func__); + return -1; + } + + hdmirx_tmds_clk_ratio_config(hdmirx_dev); + } + + if (i == 300) { + v4l2_err(v4l2_dev, "%s: signal not lock, tmds_clk_ratio:%d\n", + __func__, hdmirx_dev->tmds_clk_ratio); + v4l2_err(v4l2_dev, "%s: mu_st:%#x, scdc_st:%#x, dma_st10:%#x\n", + __func__, mu_status, scdc_status, dma_st10); + return -1; + } + + v4l2_dbg(1, debug, v4l2_dev, "%s: signal lock ok, i:%d\n", __func__, i); + hdmirx_writel(hdmirx_dev, GLOBAL_SWRESET_REQUEST, DATAPATH_SWRESETREQ); + + reinit_completion(&hdmirx_dev->avi_pkt_rcv); + hdmirx_clear_interrupt(hdmirx_dev, PKT_2_INT_CLEAR, 0xffffffff); + hdmirx_update_bits(hdmirx_dev, PKT_2_INT_MASK_N, + PKTDEC_AVIIF_RCV_IRQ, PKTDEC_AVIIF_RCV_IRQ); + + if (!wait_for_completion_timeout(&hdmirx_dev->avi_pkt_rcv, + msecs_to_jiffies(300))) { + v4l2_err(v4l2_dev, "%s wait avi_pkt_rcv failed\n", __func__); + hdmirx_update_bits(hdmirx_dev, PKT_2_INT_MASK_N, + PKTDEC_AVIIF_RCV_IRQ, 0); + } + + msleep(50); + hdmirx_format_change(hdmirx_dev); + + return 0; +} + +static void hdmirx_plugin(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_submodule_init(hdmirx_dev); + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, POWERPROVIDED, + POWERPROVIDED); + hdmirx_hpd_ctrl(hdmirx_dev, true); + hdmirx_phy_config(hdmirx_dev); + hdmirx_interrupts_setup(hdmirx_dev, true); +} + +static void hdmirx_delayed_work_hotplug(struct work_struct *work) +{ + struct snps_hdmirx_dev *hdmirx_dev; + bool plugin; + + hdmirx_dev = container_of(work, struct snps_hdmirx_dev, + delayed_work_hotplug.work); + + mutex_lock(&hdmirx_dev->work_lock); + plugin = tx_5v_power_present(hdmirx_dev); + v4l2_ctrl_s_ctrl(hdmirx_dev->detect_tx_5v_ctrl, plugin); + v4l2_dbg(1, debug, &hdmirx_dev->v4l2_dev, "%s: plugin:%d\n", + __func__, plugin); + + if (plugin) + hdmirx_plugin(hdmirx_dev); + else + hdmirx_plugout(hdmirx_dev); + + mutex_unlock(&hdmirx_dev->work_lock); +} + +static void hdmirx_delayed_work_res_change(struct work_struct *work) +{ + struct snps_hdmirx_dev *hdmirx_dev; + bool plugin; + + hdmirx_dev = container_of(work, struct snps_hdmirx_dev, + delayed_work_res_change.work); + + mutex_lock(&hdmirx_dev->work_lock); + plugin = tx_5v_power_present(hdmirx_dev); + v4l2_dbg(1, debug, &hdmirx_dev->v4l2_dev, "%s: plugin:%d\n", + __func__, plugin); + if (plugin) { + hdmirx_interrupts_setup(hdmirx_dev, false); + hdmirx_submodule_init(hdmirx_dev); + hdmirx_update_bits(hdmirx_dev, SCDC_CONFIG, POWERPROVIDED, + POWERPROVIDED); + hdmirx_hpd_ctrl(hdmirx_dev, true); + hdmirx_phy_config(hdmirx_dev); + + if (hdmirx_wait_signal_lock(hdmirx_dev)) { + hdmirx_plugout(hdmirx_dev); + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(200)); + } else { + hdmirx_dma_config(hdmirx_dev); + hdmirx_interrupts_setup(hdmirx_dev, true); + } + } + mutex_unlock(&hdmirx_dev->work_lock); +} + +static irqreturn_t hdmirx_5v_det_irq_handler(int irq, void *dev_id) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_id; + u32 val; + + val = gpiod_get_value(hdmirx_dev->detect_5v_gpio); + v4l2_dbg(3, debug, &hdmirx_dev->v4l2_dev, "%s: 5v:%d\n", __func__, val); + + queue_delayed_work(system_unbound_wq, + &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(10)); + + return IRQ_HANDLED; +} + +static const struct hdmirx_cec_ops hdmirx_cec_ops = { + .write = hdmirx_writel, + .read = hdmirx_readl, +}; + +static int hdmirx_parse_dt(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct device *dev = hdmirx_dev->dev; + int ret; + + hdmirx_dev->num_clks = devm_clk_bulk_get_all(dev, &hdmirx_dev->clks); + if (hdmirx_dev->num_clks < 1) + return -ENODEV; + + hdmirx_dev->resets[HDMIRX_RST_A].id = "axi"; + hdmirx_dev->resets[HDMIRX_RST_P].id = "apb"; + hdmirx_dev->resets[HDMIRX_RST_REF].id = "ref"; + hdmirx_dev->resets[HDMIRX_RST_BIU].id = "biu"; + + ret = devm_reset_control_bulk_get_exclusive(dev, HDMIRX_NUM_RST, + hdmirx_dev->resets); + if (ret < 0) { + dev_err(dev, "failed to get reset controls\n"); + return ret; + } + + hdmirx_dev->detect_5v_gpio = + devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); + + if (IS_ERR(hdmirx_dev->detect_5v_gpio)) { + dev_err(dev, "failed to get hdmirx hot plug detection gpio\n"); + return PTR_ERR(hdmirx_dev->detect_5v_gpio); + } + + hdmirx_dev->grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,grf"); + if (IS_ERR(hdmirx_dev->grf)) { + dev_err(dev, "failed to get rockchip,grf\n"); + return PTR_ERR(hdmirx_dev->grf); + } + + hdmirx_dev->vo1_grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,vo1-grf"); + if (IS_ERR(hdmirx_dev->vo1_grf)) { + dev_err(dev, "failed to get rockchip,vo1-grf\n"); + return PTR_ERR(hdmirx_dev->vo1_grf); + } + + if (!device_property_read_bool(dev, "hpd-is-active-low")) + hdmirx_dev->hpd_trigger_level_high = true; + + ret = of_reserved_mem_device_init(dev); + if (ret) + dev_warn(dev, "No reserved memory for HDMIRX, use default CMA\n"); + + return 0; +} + +static void hdmirx_disable_all_interrupts(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_writel(hdmirx_dev, MAINUNIT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, MAINUNIT_1_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, MAINUNIT_2_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, AVPUNIT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, AVPUNIT_1_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, PKT_0_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, PKT_1_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, PKT_2_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, SCDC_INT_MASK_N, 0); + hdmirx_writel(hdmirx_dev, CEC_INT_MASK_N, 0); + + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, MAINUNIT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, AVPUNIT_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, PKT_0_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, PKT_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, PKT_2_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, SCDC_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, HDCP_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, HDCP_1_INT_CLEAR, 0xffffffff); + hdmirx_clear_interrupt(hdmirx_dev, CEC_INT_CLEAR, 0xffffffff); +} + +static int hdmirx_init(struct snps_hdmirx_dev *hdmirx_dev) +{ + hdmirx_update_bits(hdmirx_dev, PHY_CONFIG, PHY_RESET | PHY_PDDQ, 0); + + regmap_write(hdmirx_dev->vo1_grf, VO1_GRF_VO1_CON2, + (HDMIRX_SDAIN_MSK | HDMIRX_SCLIN_MSK) | + ((HDMIRX_SDAIN_MSK | HDMIRX_SCLIN_MSK) << 16)); + /* + * Some interrupts are enabled by default, so we disable + * all interrupts and clear interrupts status first. + */ + hdmirx_disable_all_interrupts(hdmirx_dev); + + return 0; +} + +/* hdmi-4k-300mhz EDID produced by v4l2-ctl tool */ +static u8 edid_default[] = { + 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, + 0x31, 0xd8, 0x34, 0x12, 0x00, 0x00, 0x00, 0x00, + 0x22, 0x1a, 0x01, 0x03, 0x80, 0x60, 0x36, 0x78, + 0x0f, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, + 0x0f, 0x50, 0x54, 0x2f, 0xcf, 0x00, 0x31, 0x59, + 0x45, 0x59, 0x81, 0x80, 0x81, 0x40, 0x90, 0x40, + 0x95, 0x00, 0xa9, 0x40, 0xb3, 0x00, 0x04, 0x74, + 0x00, 0x30, 0xf2, 0x70, 0x5a, 0x80, 0xb0, 0x58, + 0x8a, 0x00, 0xc0, 0x1c, 0x32, 0x00, 0x00, 0x1e, + 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, 0x55, 0x18, + 0x87, 0x1e, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, + 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x68, + 0x64, 0x6d, 0x69, 0x2d, 0x34, 0x6b, 0x2d, 0x33, + 0x30, 0x30, 0x0a, 0x20, 0x00, 0x00, 0x00, 0x10, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xc5, + + 0x02, 0x03, 0x40, 0xf1, 0x4f, 0x5f, 0x5e, 0x5d, + 0x10, 0x1f, 0x04, 0x13, 0x22, 0x21, 0x20, 0x05, + 0x14, 0x02, 0x11, 0x01, 0x23, 0x09, 0x07, 0x07, + 0x83, 0x01, 0x00, 0x00, 0x6d, 0x03, 0x0c, 0x00, + 0x10, 0x00, 0x00, 0x3c, 0x21, 0x00, 0x60, 0x01, + 0x02, 0x03, 0x67, 0xd8, 0x5d, 0xc4, 0x01, 0x00, + 0x00, 0x00, 0xe2, 0x00, 0xca, 0xe3, 0x05, 0x00, + 0x00, 0xe3, 0x06, 0x01, 0x00, 0xe2, 0x0d, 0x5f, + 0xa3, 0x66, 0x00, 0xa0, 0xf0, 0x70, 0x1f, 0x80, + 0x30, 0x20, 0x35, 0x00, 0xc0, 0x1c, 0x32, 0x00, + 0x00, 0x1e, 0x1a, 0x36, 0x80, 0xa0, 0x70, 0x38, + 0x1f, 0x40, 0x30, 0x20, 0x35, 0x00, 0xc0, 0x1c, + 0x32, 0x00, 0x00, 0x1a, 0x1a, 0x1d, 0x00, 0x80, + 0x51, 0xd0, 0x1c, 0x20, 0x40, 0x80, 0x35, 0x00, + 0xc0, 0x1c, 0x32, 0x00, 0x00, 0x1c, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa1 +}; + +static void hdmirx_load_default_edid(struct snps_hdmirx_dev *hdmirx_dev) +{ + struct v4l2_edid def_edid; + + hdmirx_hpd_ctrl(hdmirx_dev, false); + + /* disable hpd and write edid */ + def_edid.pad = 0; + def_edid.start_block = 0; + def_edid.blocks = EDID_NUM_BLOCKS_MAX; + + if (IS_ENABLED(CONFIG_VIDEO_SYNOPSYS_HDMIRX_LOAD_DEFAULT_EDID)) + def_edid.edid = edid_default; + else + def_edid.edid = hdmirx_dev->edid; + + hdmirx_write_edid(hdmirx_dev, &def_edid); + + if (tx_5v_power_present(hdmirx_dev)) + hdmirx_hpd_ctrl(hdmirx_dev, true); +} + +static void hdmirx_disable_irq(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + disable_irq(hdmirx_dev->hdmi_irq); + disable_irq(hdmirx_dev->dma_irq); + disable_irq(hdmirx_dev->det_irq); + + cancel_delayed_work_sync(&hdmirx_dev->delayed_work_hotplug); + cancel_delayed_work_sync(&hdmirx_dev->delayed_work_res_change); +} + +static int hdmirx_disable(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + + clk_bulk_disable_unprepare(hdmirx_dev->num_clks, hdmirx_dev->clks); + + v4l2_dbg(2, debug, v4l2_dev, "%s: suspend\n", __func__); + + return pinctrl_pm_select_sleep_state(dev); +} + +static void hdmirx_enable_irq(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + enable_irq(hdmirx_dev->hdmi_irq); + enable_irq(hdmirx_dev->dma_irq); + enable_irq(hdmirx_dev->det_irq); + + queue_delayed_work(system_unbound_wq, &hdmirx_dev->delayed_work_hotplug, + msecs_to_jiffies(20)); +} + +static int hdmirx_enable(struct device *dev) +{ + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + struct v4l2_device *v4l2_dev = &hdmirx_dev->v4l2_dev; + int ret; + + v4l2_dbg(2, debug, v4l2_dev, "%s: resume\n", __func__); + ret = pinctrl_pm_select_default_state(dev); + if (ret < 0) + return ret; + + ret = clk_bulk_prepare_enable(hdmirx_dev->num_clks, hdmirx_dev->clks); + if (ret) { + dev_err(dev, "failed to enable hdmirx bulk clks: %d\n", ret); + return ret; + } + + reset_control_bulk_assert(HDMIRX_NUM_RST, hdmirx_dev->resets); + usleep_range(150, 160); + reset_control_bulk_deassert(HDMIRX_NUM_RST, hdmirx_dev->resets); + usleep_range(150, 160); + + return 0; +} + +static int hdmirx_suspend(struct device *dev) +{ + hdmirx_disable_irq(dev); + + return hdmirx_disable(dev); +} + +static int hdmirx_resume(struct device *dev) +{ + int ret = hdmirx_enable(dev); + + if (ret) + return ret; + + hdmirx_enable_irq(dev); + + return 0; +} + +static const struct dev_pm_ops snps_hdmirx_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(hdmirx_suspend, hdmirx_resume) +}; + +static int hdmirx_setup_irq(struct snps_hdmirx_dev *hdmirx_dev, + struct platform_device *pdev) +{ + struct device *dev = hdmirx_dev->dev; + int ret, irq; + + irq = platform_get_irq_byname(pdev, "hdmi"); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get hdmi irq\n"); + return irq; + } + + irq_set_status_flags(irq, IRQ_NOAUTOEN); + + hdmirx_dev->hdmi_irq = irq; + ret = devm_request_irq(dev, irq, hdmirx_hdmi_irq_handler, 0, + "rk_hdmirx-hdmi", hdmirx_dev); + if (ret) { + dev_err_probe(dev, ret, "failed to request hdmi irq\n"); + return ret; + } + + irq = platform_get_irq_byname(pdev, "dma"); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get dma irq\n"); + return irq; + } + + irq_set_status_flags(irq, IRQ_NOAUTOEN); + + hdmirx_dev->dma_irq = irq; + ret = devm_request_threaded_irq(dev, irq, NULL, hdmirx_dma_irq_handler, + IRQF_ONESHOT, "rk_hdmirx-dma", + hdmirx_dev); + if (ret) { + dev_err_probe(dev, ret, "failed to request dma irq\n"); + return ret; + } + + irq = gpiod_to_irq(hdmirx_dev->detect_5v_gpio); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get hdmirx-5v irq\n"); + return irq; + } + + irq_set_status_flags(irq, IRQ_NOAUTOEN); + + hdmirx_dev->det_irq = irq; + ret = devm_request_irq(dev, irq, hdmirx_5v_det_irq_handler, + IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, + "rk_hdmirx-5v", hdmirx_dev); + if (ret) { + dev_err_probe(dev, ret, "failed to request hdmirx-5v irq\n"); + return ret; + } + + return 0; +} + +static int hdmirx_register_cec(struct snps_hdmirx_dev *hdmirx_dev, + struct platform_device *pdev) +{ + struct device *dev = hdmirx_dev->dev; + struct hdmirx_cec_data cec_data; + int irq; + + irq = platform_get_irq_byname(pdev, "cec"); + if (irq < 0) { + dev_err_probe(dev, irq, "failed to get cec irq\n"); + return irq; + } + + hdmirx_dev->cec_notifier = cec_notifier_conn_register(dev, NULL, NULL); + if (!hdmirx_dev->cec_notifier) + return -EINVAL; + + cec_data.hdmirx = hdmirx_dev; + cec_data.dev = hdmirx_dev->dev; + cec_data.ops = &hdmirx_cec_ops; + cec_data.irq = irq; + + hdmirx_dev->cec = snps_hdmirx_cec_register(&cec_data); + if (!hdmirx_dev->cec) { + cec_notifier_conn_unregister(hdmirx_dev->cec_notifier); + return -EINVAL; + } + + return 0; +} + +static int hdmirx_probe(struct platform_device *pdev) +{ + struct snps_hdmirx_dev *hdmirx_dev; + struct device *dev = &pdev->dev; + struct v4l2_ctrl_handler *hdl; + struct hdmirx_stream *stream; + struct v4l2_device *v4l2_dev; + int ret; + + hdmirx_dev = devm_kzalloc(dev, sizeof(*hdmirx_dev), GFP_KERNEL); + if (!hdmirx_dev) + return -ENOMEM; + + ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + hdmirx_dev->dev = dev; + dev_set_drvdata(dev, hdmirx_dev); + + ret = hdmirx_parse_dt(hdmirx_dev); + if (ret) + return ret; + + ret = hdmirx_setup_irq(hdmirx_dev, pdev); + if (ret) + return ret; + + hdmirx_dev->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(hdmirx_dev->regs)) + return dev_err_probe(dev, PTR_ERR(hdmirx_dev->regs), + "failed to remap regs resource\n"); + + mutex_init(&hdmirx_dev->stream_lock); + mutex_init(&hdmirx_dev->work_lock); + spin_lock_init(&hdmirx_dev->rst_lock); + + init_completion(&hdmirx_dev->cr_write_done); + init_completion(&hdmirx_dev->timer_base_lock); + init_completion(&hdmirx_dev->avi_pkt_rcv); + + INIT_DELAYED_WORK(&hdmirx_dev->delayed_work_hotplug, + hdmirx_delayed_work_hotplug); + INIT_DELAYED_WORK(&hdmirx_dev->delayed_work_res_change, + hdmirx_delayed_work_res_change); + + hdmirx_dev->cur_fmt_fourcc = V4L2_PIX_FMT_BGR24; + hdmirx_dev->timings = cea640x480; + + hdmirx_enable(dev); + hdmirx_init(hdmirx_dev); + + v4l2_dev = &hdmirx_dev->v4l2_dev; + strscpy(v4l2_dev->name, dev_name(dev), sizeof(v4l2_dev->name)); + + hdl = &hdmirx_dev->hdl; + v4l2_ctrl_handler_init(hdl, 3); + + hdmirx_dev->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL, + V4L2_CID_DV_RX_POWER_PRESENT, + 0, 1, 0, 0); + + hdmirx_dev->rgb_range = v4l2_ctrl_new_std_menu(hdl, NULL, + V4L2_CID_DV_RX_RGB_RANGE, + V4L2_DV_RGB_RANGE_FULL, 0, + V4L2_DV_RGB_RANGE_AUTO); + + hdmirx_dev->rgb_range->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + hdmirx_dev->content_type = + v4l2_ctrl_new_std_menu(hdl, NULL, V4L2_CID_DV_RX_IT_CONTENT_TYPE, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC, 0, + V4L2_DV_IT_CONTENT_TYPE_NO_ITC); + + if (hdl->error) { + dev_err(dev, "v4l2 ctrl handler init failed\n"); + ret = hdl->error; + goto err_pm; + } + hdmirx_dev->v4l2_dev.ctrl_handler = hdl; + + ret = v4l2_device_register(dev, &hdmirx_dev->v4l2_dev); + if (ret < 0) { + dev_err(dev, "register v4l2 device failed\n"); + goto err_hdl; + } + + stream = &hdmirx_dev->stream; + stream->hdmirx_dev = hdmirx_dev; + ret = hdmirx_register_stream_vdev(stream); + if (ret < 0) { + dev_err(dev, "register video device failed\n"); + goto err_unreg_v4l2_dev; + } + + ret = hdmirx_register_cec(hdmirx_dev, pdev); + if (ret) + goto err_unreg_video_dev; + + hdmirx_load_default_edid(hdmirx_dev); + + hdmirx_enable_irq(dev); + + return 0; + +err_unreg_video_dev: + video_unregister_device(&hdmirx_dev->stream.vdev); +err_unreg_v4l2_dev: + v4l2_device_unregister(&hdmirx_dev->v4l2_dev); +err_hdl: + v4l2_ctrl_handler_free(&hdmirx_dev->hdl); +err_pm: + hdmirx_disable(dev); + + return ret; +} + +static void hdmirx_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct snps_hdmirx_dev *hdmirx_dev = dev_get_drvdata(dev); + + snps_hdmirx_cec_unregister(hdmirx_dev->cec); + cec_notifier_conn_unregister(hdmirx_dev->cec_notifier); + + hdmirx_disable_irq(dev); + + video_unregister_device(&hdmirx_dev->stream.vdev); + v4l2_ctrl_handler_free(&hdmirx_dev->hdl); + v4l2_device_unregister(&hdmirx_dev->v4l2_dev); + + hdmirx_disable(dev); + + reset_control_bulk_assert(HDMIRX_NUM_RST, hdmirx_dev->resets); + + of_reserved_mem_device_release(dev); +} + +static const struct of_device_id hdmirx_id[] = { + { .compatible = "rockchip,rk3588-hdmirx-ctrler" }, + { }, +}; +MODULE_DEVICE_TABLE(of, hdmirx_id); + +static struct platform_driver hdmirx_driver = { + .probe = hdmirx_probe, + .remove = hdmirx_remove, + .driver = { + .name = "snps_hdmirx", + .of_match_table = hdmirx_id, + .pm = &snps_hdmirx_pm_ops, + } +}; +module_platform_driver(hdmirx_driver); + +MODULE_DESCRIPTION("Synopsys HDMI Receiver Driver"); +MODULE_AUTHOR("Dingxian Wen "); +MODULE_AUTHOR("Shreeya Patel "); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.h b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.h new file mode 100644 index 000000000000..220ab99ca611 --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx.h @@ -0,0 +1,394 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021 Rockchip Electronics Co. Ltd. + * + * Author: Dingxian Wen + */ + +#ifndef DW_HDMIRX_H +#define DW_HDMIRX_H + +#include + +#define UPDATE(x, h, l) (((x) << (l)) & GENMASK((h), (l))) +#define HIWORD_UPDATE(v, h, l) (((v) << (l)) | (GENMASK((h), (l)) << 16)) + +/* SYS_GRF */ +#define SYS_GRF_SOC_CON1 0x0304 +#define HDMIRXPHY_SRAM_EXT_LD_DONE BIT(1) +#define HDMIRXPHY_SRAM_BYPASS BIT(0) +#define SYS_GRF_SOC_STATUS1 0x0384 +#define HDMIRXPHY_SRAM_INIT_DONE BIT(10) +#define SYS_GRF_CHIP_ID 0x0600 + +/* VO1_GRF */ +#define VO1_GRF_VO1_CON2 0x0008 +#define HDMIRX_SDAIN_MSK BIT(2) +#define HDMIRX_SCLIN_MSK BIT(1) + +/* HDMIRX PHY */ +#define SUP_DIG_ANA_CREGS_SUP_ANA_NC 0x004f + +#define LANE0_DIG_ASIC_RX_OVRD_OUT_0 0x100f +#define LANE1_DIG_ASIC_RX_OVRD_OUT_0 0x110f +#define LANE2_DIG_ASIC_RX_OVRD_OUT_0 0x120f +#define LANE3_DIG_ASIC_RX_OVRD_OUT_0 0x130f +#define ASIC_ACK_OVRD_EN BIT(1) +#define ASIC_ACK BIT(0) + +#define LANE0_DIG_RX_VCOCAL_RX_VCO_CAL_CTRL_2 0x104a +#define LANE1_DIG_RX_VCOCAL_RX_VCO_CAL_CTRL_2 0x114a +#define LANE2_DIG_RX_VCOCAL_RX_VCO_CAL_CTRL_2 0x124a +#define LANE3_DIG_RX_VCOCAL_RX_VCO_CAL_CTRL_2 0x134a +#define FREQ_TUNE_START_VAL_MASK GENMASK(9, 0) +#define FREQ_TUNE_START_VAL(x) UPDATE(x, 9, 0) + +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_FSM_CONFIG 0x20c4 +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_ADAPT_REF_FOM 0x20c7 +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_3_REG 0x20e9 +#define CDR_SETTING_BOUNDARY_3_DEFAULT 0x52da +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_4_REG 0x20ea +#define CDR_SETTING_BOUNDARY_4_DEFAULT 0x43cd +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_5_REG 0x20eb +#define CDR_SETTING_BOUNDARY_5_DEFAULT 0x35b3 +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_6_REG 0x20fb +#define CDR_SETTING_BOUNDARY_6_DEFAULT 0x2799 +#define HDMIPCS_DIG_CTRL_PATH_MAIN_FSM_RATE_CALC_HDMI14_CDR_SETTING_7_REG 0x20fc +#define CDR_SETTING_BOUNDARY_7_DEFAULT 0x1b65 + +#define RAWLANE0_DIG_PCS_XF_RX_OVRD_OUT 0x300e +#define RAWLANE1_DIG_PCS_XF_RX_OVRD_OUT 0x310e +#define RAWLANE2_DIG_PCS_XF_RX_OVRD_OUT 0x320e +#define RAWLANE3_DIG_PCS_XF_RX_OVRD_OUT 0x330e +#define PCS_ACK_WRITE_SELECT BIT(14) +#define PCS_EN_CTL BIT(1) +#define PCS_ACK BIT(0) + +#define RAWLANE0_DIG_AON_FAST_FLAGS 0x305c +#define RAWLANE1_DIG_AON_FAST_FLAGS 0x315c +#define RAWLANE2_DIG_AON_FAST_FLAGS 0x325c +#define RAWLANE3_DIG_AON_FAST_FLAGS 0x335c + +/* HDMIRX Ctrler */ +#define GLOBAL_SWRESET_REQUEST 0x0020 +#define DATAPATH_SWRESETREQ BIT(12) +#define GLOBAL_SWENABLE 0x0024 +#define PHYCTRL_ENABLE BIT(21) +#define CEC_ENABLE BIT(16) +#define TMDS_ENABLE BIT(13) +#define DATAPATH_ENABLE BIT(12) +#define PKTFIFO_ENABLE BIT(11) +#define AVPUNIT_ENABLE BIT(8) +#define MAIN_ENABLE BIT(0) +#define GLOBAL_TIMER_REF_BASE 0x0028 +#define CORE_CONFIG 0x0050 +#define CMU_CONFIG0 0x0060 +#define TMDSQPCLK_STABLE_FREQ_MARGIN_MASK GENMASK(30, 16) +#define TMDSQPCLK_STABLE_FREQ_MARGIN(x) UPDATE(x, 30, 16) +#define AUDCLK_STABLE_FREQ_MARGIN_MASK GENMASK(11, 9) +#define AUDCLK_STABLE_FREQ_MARGIN(x) UPDATE(x, 11, 9) +#define CMU_STATUS 0x007c +#define TMDSQPCLK_LOCKED_ST BIT(4) +#define CMU_TMDSQPCLK_FREQ 0x0084 +#define PHY_CONFIG 0x00c0 +#define LDO_AFE_PROG_MASK GENMASK(24, 23) +#define LDO_AFE_PROG(x) UPDATE(x, 24, 23) +#define LDO_PWRDN BIT(21) +#define TMDS_CLOCK_RATIO BIT(16) +#define RXDATA_WIDTH BIT(15) +#define REFFREQ_SEL_MASK GENMASK(11, 9) +#define REFFREQ_SEL(x) UPDATE(x, 11, 9) +#define HDMI_DISABLE BIT(8) +#define PHY_PDDQ BIT(1) +#define PHY_RESET BIT(0) +#define PHY_STATUS 0x00c8 +#define HDMI_DISABLE_ACK BIT(1) +#define PDDQ_ACK BIT(0) +#define PHYCREG_CONFIG0 0x00e0 +#define PHYCREG_CR_PARA_SELECTION_MODE_MASK GENMASK(1, 0) +#define PHYCREG_CR_PARA_SELECTION_MODE(x) UPDATE(x, 1, 0) +#define PHYCREG_CONFIG1 0x00e4 +#define PHYCREG_CONFIG2 0x00e8 +#define PHYCREG_CONFIG3 0x00ec +#define PHYCREG_CONTROL 0x00f0 +#define PHYCREG_CR_PARA_WRITE_P BIT(1) +#define PHYCREG_CR_PARA_READ_P BIT(0) +#define PHYCREG_STATUS 0x00f4 + +#define MAINUNIT_STATUS 0x0150 +#define TMDSVALID_STABLE_ST BIT(1) +#define DESCRAND_EN_CONTROL 0x0210 +#define SCRAMB_EN_SEL_QST_MASK GENMASK(1, 0) +#define SCRAMB_EN_SEL_QST(x) UPDATE(x, 1, 0) +#define DESCRAND_SYNC_CONTROL 0x0214 +#define RECOVER_UNSYNC_STREAM_QST BIT(0) +#define DESCRAND_SYNC_SEQ_CONFIG 0x022c +#define DESCRAND_SYNC_SEQ_ERR_CNT_EN BIT(0) +#define DESCRAND_SYNC_SEQ_STATUS 0x0234 +#define DEFRAMER_CONFIG0 0x0270 +#define VS_CNT_THR_QST_MASK GENMASK(27, 20) +#define VS_CNT_THR_QST(x) UPDATE(x, 27, 20) +#define HS_POL_QST_MASK GENMASK(19, 18) +#define HS_POL_QST(x) UPDATE(x, 19, 18) +#define VS_POL_QST_MASK GENMASK(17, 16) +#define VS_POL_QST(x) UPDATE(x, 17, 16) +#define VS_REMAPFILTER_EN_QST BIT(8) +#define VS_FILTER_ORDER_QST_MASK GENMASK(1, 0) +#define VS_FILTER_ORDER_QST(x) UPDATE(x, 1, 0) +#define DEFRAMER_VSYNC_CNT_CLEAR 0x0278 +#define VSYNC_CNT_CLR_P BIT(0) +#define DEFRAMER_STATUS 0x027c +#define OPMODE_STS_MASK GENMASK(6, 4) +#define I2C_SLAVE_CONFIG1 0x0164 +#define I2C_SDA_OUT_HOLD_VALUE_QST_MASK GENMASK(15, 8) +#define I2C_SDA_OUT_HOLD_VALUE_QST(x) UPDATE(x, 15, 8) +#define I2C_SDA_IN_HOLD_VALUE_QST_MASK GENMASK(7, 0) +#define I2C_SDA_IN_HOLD_VALUE_QST(x) UPDATE(x, 7, 0) +#define OPMODE_STS_MASK GENMASK(6, 4) +#define REPEATER_QST BIT(28) +#define FASTREAUTH_QST BIT(27) +#define FEATURES_1DOT1_QST BIT(26) +#define FASTI2C_QST BIT(25) +#define EESS_CTL_THR_QST_MASK GENMASK(19, 16) +#define EESS_CTL_THR_QST(x) UPDATE(x, 19, 16) +#define OESS_CTL3_THR_QST_MASK GENMASK(11, 8) +#define OESS_CTL3_THR_QST(x) UPDATE(x, 11, 8) +#define EESS_OESS_SEL_QST_MASK GENMASK(5, 4) +#define EESS_OESS_SEL_QST(x) UPDATE(x, 5, 4) +#define KEY_DECRYPT_EN_QST BIT(0) +#define KEY_DECRYPT_SEED_QST_MASK GENMASK(15, 0) +#define KEY_DECRYPT_SEED_QST(x) UPDATE(x, 15, 0) +#define HDCP_INT_CLEAR 0x50d8 +#define HDCP_1_INT_CLEAR 0x50e8 +#define HDCP2_CONFIG 0x02f0 +#define HDCP2_SWITCH_OVR_VALUE BIT(2) +#define HDCP2_SWITCH_OVR_EN BIT(1) + +#define VIDEO_CONFIG2 0x042c +#define VPROC_VSYNC_POL_OVR_VALUE BIT(19) +#define VPROC_VSYNC_POL_OVR_EN BIT(18) +#define VPROC_HSYNC_POL_OVR_VALUE BIT(17) +#define VPROC_HSYNC_POL_OVR_EN BIT(16) +#define VPROC_FMT_OVR_VALUE_MASK GENMASK(6, 4) +#define VPROC_FMT_OVR_VALUE(x) UPDATE(x, 6, 4) +#define VPROC_FMT_OVR_EN BIT(0) + +#define AFIFO_FILL_RESTART BIT(0) +#define AFIFO_INIT_P BIT(0) +#define AFIFO_THR_LOW_QST_MASK GENMASK(25, 16) +#define AFIFO_THR_LOW_QST(x) UPDATE(x, 25, 16) +#define AFIFO_THR_HIGH_QST_MASK GENMASK(9, 0) +#define AFIFO_THR_HIGH_QST(x) UPDATE(x, 9, 0) +#define AFIFO_THR_MUTE_LOW_QST_MASK GENMASK(25, 16) +#define AFIFO_THR_MUTE_LOW_QST(x) UPDATE(x, 25, 16) +#define AFIFO_THR_MUTE_HIGH_QST_MASK GENMASK(9, 0) +#define AFIFO_THR_MUTE_HIGH_QST(x) UPDATE(x, 9, 0) + +#define AFIFO_UNDERFLOW_ST BIT(25) +#define AFIFO_OVERFLOW_ST BIT(24) + +#define SPEAKER_ALLOC_OVR_EN BIT(16) +#define I2S_BPCUV_EN BIT(4) +#define SPDIF_EN BIT(2) +#define I2S_EN BIT(1) +#define AFIFO_THR_PASS_DEMUTEMASK_N BIT(24) +#define AVMUTE_DEMUTEMASK_N BIT(16) +#define AFIFO_THR_MUTE_LOW_MUTEMASK_N BIT(9) +#define AFIFO_THR_MUTE_HIGH_MUTEMASK_N BIT(8) +#define AVMUTE_MUTEMASK_N BIT(0) +#define SCDC_CONFIG 0x0580 +#define HPDLOW BIT(1) +#define POWERPROVIDED BIT(0) +#define SCDC_REGBANK_STATUS1 0x058c +#define SCDC_TMDSBITCLKRATIO BIT(1) +#define SCDC_REGBANK_STATUS3 0x0594 +#define SCDC_REGBANK_CONFIG0 0x05c0 +#define SCDC_SINKVERSION_QST_MASK GENMASK(7, 0) +#define SCDC_SINKVERSION_QST(x) UPDATE(x, 7, 0) +#define AGEN_LAYOUT BIT(4) +#define AGEN_SPEAKER_ALLOC GENMASK(15, 8) + +#define CED_CONFIG 0x0760 +#define CED_VIDDATACHECKEN_QST BIT(27) +#define CED_DATAISCHECKEN_QST BIT(26) +#define CED_GBCHECKEN_QST BIT(25) +#define CED_CTRLCHECKEN_QST BIT(24) +#define CED_CHLOCKMAXER_QST_MASK GENMASK(14, 0) +#define CED_CHLOCKMAXER_QST(x) UPDATE(x, 14, 0) +#define CED_DYN_CONFIG 0x0768 +#define CED_DYN_CONTROL 0x076c +#define PKTEX_BCH_ERRFILT_CONFIG 0x07c4 +#define PKTEX_CHKSUM_ERRFILT_CONFIG 0x07c8 + +#define PKTDEC_ACR_PH2_1 0x1100 +#define PKTDEC_ACR_PB3_0 0x1104 +#define PKTDEC_ACR_PB7_4 0x1108 +#define PKTDEC_AVIIF_PH2_1 0x1200 +#define PKTDEC_AVIIF_PB3_0 0x1204 +#define PKTDEC_AVIIF_PB7_4 0x1208 +#define VIC_VAL_MASK GENMASK(6, 0) +#define PKTDEC_AVIIF_PB11_8 0x120c +#define PKTDEC_AVIIF_PB15_12 0x1210 +#define PKTDEC_AVIIF_PB19_16 0x1214 +#define PKTDEC_AVIIF_PB23_20 0x1218 +#define PKTDEC_AVIIF_PB27_24 0x121c + +#define PKTFIFO_CONFIG 0x1500 +#define PKTFIFO_STORE_FILT_CONFIG 0x1504 +#define PKTFIFO_THR_CONFIG0 0x1508 +#define PKTFIFO_THR_CONFIG1 0x150c +#define PKTFIFO_CONTROL 0x1510 + +#define VMON_STATUS1 0x1580 +#define VMON_STATUS2 0x1584 +#define VMON_STATUS3 0x1588 +#define VMON_STATUS4 0x158c +#define VMON_STATUS5 0x1590 +#define VMON_STATUS6 0x1594 +#define VMON_STATUS7 0x1598 +#define VMON_ILACE_DETECT BIT(4) + +#define CEC_TX_CONTROL 0x2000 +#define CEC_STATUS 0x2004 +#define CEC_CONFIG 0x2008 +#define RX_AUTO_DRIVE_ACKNOWLEDGE BIT(9) +#define CEC_ADDR 0x200c +#define CEC_TX_COUNT 0x2020 +#define CEC_TX_DATA3_0 0x2024 +#define CEC_RX_COUNT_STATUS 0x2040 +#define CEC_RX_DATA3_0 0x2044 +#define CEC_LOCK_CONTROL 0x2054 +#define CEC_RXQUAL_BITTIME_CONFIG 0x2060 +#define CEC_RX_BITTIME_CONFIG 0x2064 +#define CEC_TX_BITTIME_CONFIG 0x2068 + +#define DMA_CONFIG1 0x4400 +#define UV_WID_MASK GENMASK(31, 28) +#define UV_WID(x) UPDATE(x, 31, 28) +#define Y_WID_MASK GENMASK(27, 24) +#define Y_WID(x) UPDATE(x, 27, 24) +#define DDR_STORE_FORMAT_MASK GENMASK(15, 12) +#define DDR_STORE_FORMAT(x) UPDATE(x, 15, 12) +#define ABANDON_EN BIT(0) +#define DMA_CONFIG2 0x4404 +#define DMA_CONFIG3 0x4408 +#define DMA_CONFIG4 0x440c // dma irq en +#define DMA_CONFIG5 0x4410 // dma irq clear status +#define LINE_FLAG_INT_EN BIT(8) +#define HDMIRX_DMA_IDLE_INT BIT(7) +#define HDMIRX_LOCK_DISABLE_INT BIT(6) +#define LAST_FRAME_AXI_UNFINISH_INT_EN BIT(5) +#define FIFO_OVERFLOW_INT_EN BIT(2) +#define FIFO_UNDERFLOW_INT_EN BIT(1) +#define HDMIRX_AXI_ERROR_INT_EN BIT(0) +#define DMA_CONFIG6 0x4414 +#define RB_SWAP_EN BIT(9) +#define HSYNC_TOGGLE_EN BIT(5) +#define VSYNC_TOGGLE_EN BIT(4) +#define HDMIRX_DMA_EN BIT(1) +#define DMA_CONFIG7 0x4418 +#define LINE_FLAG_NUM_MASK GENMASK(31, 16) +#define LINE_FLAG_NUM(x) UPDATE(x, 31, 16) +#define LOCK_FRAME_NUM_MASK GENMASK(11, 0) +#define LOCK_FRAME_NUM(x) UPDATE(x, 11, 0) +#define DMA_CONFIG8 0x441c +#define REG_MIRROR_EN BIT(0) +#define DMA_CONFIG9 0x4420 +#define DMA_CONFIG10 0x4424 +#define DMA_CONFIG11 0x4428 +#define EDID_READ_EN_MASK BIT(8) +#define EDID_READ_EN(x) UPDATE(x, 8, 8) +#define EDID_WRITE_EN_MASK BIT(7) +#define EDID_WRITE_EN(x) UPDATE(x, 7, 7) +#define EDID_SLAVE_ADDR_MASK GENMASK(6, 0) +#define EDID_SLAVE_ADDR(x) UPDATE(x, 6, 0) +#define DMA_STATUS1 0x4430 // dma irq status +#define DMA_STATUS2 0x4434 +#define DMA_STATUS3 0x4438 +#define DMA_STATUS4 0x443c +#define DMA_STATUS5 0x4440 +#define DMA_STATUS6 0x4444 +#define DMA_STATUS7 0x4448 +#define DMA_STATUS8 0x444c +#define DMA_STATUS9 0x4450 +#define DMA_STATUS10 0x4454 +#define HDMIRX_LOCK BIT(3) +#define DMA_STATUS11 0x4458 +#define HDMIRX_TYPE_MASK GENMASK(8, 7) +#define HDMIRX_COLOR_DEPTH_MASK GENMASK(6, 3) +#define HDMIRX_FORMAT_MASK GENMASK(2, 0) +#define DMA_STATUS12 0x445c +#define DMA_STATUS13 0x4460 +#define DMA_STATUS14 0x4464 + +#define MAINUNIT_INTVEC_INDEX 0x5000 +#define MAINUNIT_0_INT_STATUS 0x5010 +#define CECRX_NOTIFY_ERR BIT(12) +#define CECRX_EOM BIT(11) +#define CECTX_DRIVE_ERR BIT(10) +#define CECRX_BUSY BIT(9) +#define CECTX_BUSY BIT(8) +#define CECTX_FRAME_DISCARDED BIT(5) +#define CECTX_NRETRANSMIT_FAIL BIT(4) +#define CECTX_LINE_ERR BIT(3) +#define CECTX_ARBLOST BIT(2) +#define CECTX_NACK BIT(1) +#define CECTX_DONE BIT(0) +#define MAINUNIT_0_INT_MASK_N 0x5014 +#define MAINUNIT_0_INT_CLEAR 0x5018 +#define MAINUNIT_0_INT_FORCE 0x501c +#define TIMER_BASE_LOCKED_IRQ BIT(26) +#define TMDSQPCLK_OFF_CHG BIT(5) +#define TMDSQPCLK_LOCKED_CHG BIT(4) +#define MAINUNIT_1_INT_STATUS 0x5020 +#define MAINUNIT_1_INT_MASK_N 0x5024 +#define MAINUNIT_1_INT_CLEAR 0x5028 +#define MAINUNIT_1_INT_FORCE 0x502c +#define MAINUNIT_2_INT_STATUS 0x5030 +#define MAINUNIT_2_INT_MASK_N 0x5034 +#define MAINUNIT_2_INT_CLEAR 0x5038 +#define MAINUNIT_2_INT_FORCE 0x503c +#define PHYCREG_CR_READ_DONE BIT(11) +#define PHYCREG_CR_WRITE_DONE BIT(10) +#define TMDSVALID_STABLE_CHG BIT(1) + +#define AVPUNIT_0_INT_STATUS 0x5040 +#define AVPUNIT_0_INT_MASK_N 0x5044 +#define AVPUNIT_0_INT_CLEAR 0x5048 +#define AVPUNIT_0_INT_FORCE 0x504c +#define CED_DYN_CNT_CH2_IRQ BIT(22) +#define CED_DYN_CNT_CH1_IRQ BIT(21) +#define CED_DYN_CNT_CH0_IRQ BIT(20) +#define AVPUNIT_1_INT_STATUS 0x5050 +#define DEFRAMER_VSYNC_THR_REACHED_IRQ BIT(1) +#define AVPUNIT_1_INT_MASK_N 0x5054 +#define DEFRAMER_VSYNC_THR_REACHED_MASK_N BIT(1) +#define DEFRAMER_VSYNC_MASK_N BIT(0) +#define AVPUNIT_1_INT_CLEAR 0x5058 +#define DEFRAMER_VSYNC_THR_REACHED_CLEAR BIT(1) +#define PKT_0_INT_STATUS 0x5080 +#define PKTDEC_ACR_CHG_IRQ BIT(3) +#define PKT_0_INT_MASK_N 0x5084 +#define PKTDEC_ACR_CHG_MASK_N BIT(3) +#define PKT_0_INT_CLEAR 0x5088 +#define PKT_1_INT_STATUS 0x5090 +#define PKT_1_INT_MASK_N 0x5094 +#define PKT_1_INT_CLEAR 0x5098 +#define PKT_2_INT_STATUS 0x50a0 +#define PKTDEC_ACR_RCV_IRQ BIT(3) +#define PKT_2_INT_MASK_N 0x50a4 +#define PKTDEC_AVIIF_RCV_IRQ BIT(11) +#define PKTDEC_ACR_RCV_MASK_N BIT(3) +#define PKT_2_INT_CLEAR 0x50a8 +#define PKTDEC_AVIIF_RCV_CLEAR BIT(11) +#define PKTDEC_ACR_RCV_CLEAR BIT(3) +#define SCDC_INT_STATUS 0x50c0 +#define SCDC_INT_MASK_N 0x50c4 +#define SCDC_INT_CLEAR 0x50c8 +#define SCDCTMDSCCFG_CHG BIT(2) + +#define CEC_INT_STATUS 0x5100 +#define CEC_INT_MASK_N 0x5104 +#define CEC_INT_CLEAR 0x5108 + +#endif diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.c b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.c new file mode 100644 index 000000000000..09b89529f0d4 --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.c @@ -0,0 +1,283 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2021 Rockchip Electronics Co. Ltd. + * + * Author: Shunqing Chen + */ + +#include +#include +#include +#include +#include + +#include +#include + +#include "snps_hdmirx.h" +#include "snps_hdmirx_cec.h" + +static void hdmirx_cec_write(struct hdmirx_cec *cec, int reg, u32 val) +{ + cec->ops->write(cec->hdmirx, reg, val); +} + +static u32 hdmirx_cec_read(struct hdmirx_cec *cec, int reg) +{ + return cec->ops->read(cec->hdmirx, reg); +} + +static void hdmirx_cec_update_bits(struct hdmirx_cec *cec, int reg, u32 mask, + u32 data) +{ + u32 val = hdmirx_cec_read(cec, reg) & ~mask; + + val |= (data & mask); + hdmirx_cec_write(cec, reg, val); +} + +static int hdmirx_cec_log_addr(struct cec_adapter *adap, u8 logical_addr) +{ + struct hdmirx_cec *cec = cec_get_drvdata(adap); + + if (logical_addr == CEC_LOG_ADDR_INVALID) + cec->addresses = 0; + else + cec->addresses |= BIT(logical_addr) | BIT(15); + + hdmirx_cec_write(cec, CEC_ADDR, cec->addresses); + + return 0; +} + +/* signal_free_time is handled by the Synopsys Designware + * HDMIRX Controller hardware. + */ +static int hdmirx_cec_transmit(struct cec_adapter *adap, u8 attempts, + u32 signal_free_time, struct cec_msg *msg) +{ + struct hdmirx_cec *cec = cec_get_drvdata(adap); + u32 data[4] = {0}; + int i, data_len, msg_len; + + msg_len = msg->len; + + hdmirx_cec_write(cec, CEC_TX_COUNT, msg_len - 1); + for (i = 0; i < msg_len; i++) + data[i / 4] |= msg->msg[i] << (i % 4) * 8; + + data_len = DIV_ROUND_UP(msg_len, 4); + + for (i = 0; i < data_len; i++) + hdmirx_cec_write(cec, CEC_TX_DATA3_0 + i * 4, data[i]); + + hdmirx_cec_write(cec, CEC_TX_CONTROL, 0x1); + + return 0; +} + +static irqreturn_t hdmirx_cec_hardirq(int irq, void *data) +{ + struct cec_adapter *adap = data; + struct hdmirx_cec *cec = cec_get_drvdata(adap); + u32 stat = hdmirx_cec_read(cec, CEC_INT_STATUS); + irqreturn_t ret = IRQ_HANDLED; + u32 val; + + if (!stat) + return IRQ_NONE; + + hdmirx_cec_write(cec, CEC_INT_CLEAR, stat); + + if (stat & CECTX_LINE_ERR) { + cec->tx_status = CEC_TX_STATUS_ERROR; + cec->tx_done = true; + ret = IRQ_WAKE_THREAD; + } else if (stat & CECTX_DONE) { + cec->tx_status = CEC_TX_STATUS_OK; + cec->tx_done = true; + ret = IRQ_WAKE_THREAD; + } else if (stat & CECTX_NACK) { + cec->tx_status = CEC_TX_STATUS_NACK; + cec->tx_done = true; + ret = IRQ_WAKE_THREAD; + } else if (stat & CECTX_ARBLOST) { + cec->tx_status = CEC_TX_STATUS_ARB_LOST; + cec->tx_done = true; + ret = IRQ_WAKE_THREAD; + } + + if (stat & CECRX_EOM) { + unsigned int len, i; + + val = hdmirx_cec_read(cec, CEC_RX_COUNT_STATUS); + /* rxbuffer locked status */ + if ((val & 0x80)) + return ret; + + len = (val & 0xf) + 1; + if (len > sizeof(cec->rx_msg.msg)) + len = sizeof(cec->rx_msg.msg); + + for (i = 0; i < len; i++) { + if (!(i % 4)) + val = hdmirx_cec_read(cec, CEC_RX_DATA3_0 + i / 4 * 4); + cec->rx_msg.msg[i] = (val >> ((i % 4) * 8)) & 0xff; + } + + cec->rx_msg.len = len; + smp_wmb(); /* receive RX msg */ + cec->rx_done = true; + hdmirx_cec_write(cec, CEC_LOCK_CONTROL, 0x1); + + ret = IRQ_WAKE_THREAD; + } + + return ret; +} + +static irqreturn_t hdmirx_cec_thread(int irq, void *data) +{ + struct cec_adapter *adap = data; + struct hdmirx_cec *cec = cec_get_drvdata(adap); + + if (cec->tx_done) { + cec->tx_done = false; + cec_transmit_attempt_done(adap, cec->tx_status); + } + if (cec->rx_done) { + cec->rx_done = false; + smp_rmb(); /* RX msg has been received */ + cec_received_msg(adap, &cec->rx_msg); + } + + return IRQ_HANDLED; +} + +static int hdmirx_cec_enable(struct cec_adapter *adap, bool enable) +{ + struct hdmirx_cec *cec = cec_get_drvdata(adap); + + if (!enable) { + hdmirx_cec_write(cec, CEC_INT_MASK_N, 0); + hdmirx_cec_write(cec, CEC_INT_CLEAR, 0); + if (cec->ops->disable) + cec->ops->disable(cec->hdmirx); + } else { + unsigned int irqs; + + hdmirx_cec_log_addr(cec->adap, CEC_LOG_ADDR_INVALID); + if (cec->ops->enable) + cec->ops->enable(cec->hdmirx); + hdmirx_cec_update_bits(cec, GLOBAL_SWENABLE, CEC_ENABLE, CEC_ENABLE); + + irqs = CECTX_LINE_ERR | CECTX_NACK | CECRX_EOM | CECTX_DONE; + hdmirx_cec_write(cec, CEC_INT_MASK_N, irqs); + } + + return 0; +} + +static const struct cec_adap_ops hdmirx_cec_ops = { + .adap_enable = hdmirx_cec_enable, + .adap_log_addr = hdmirx_cec_log_addr, + .adap_transmit = hdmirx_cec_transmit, +}; + +static void hdmirx_cec_del(void *data) +{ + struct hdmirx_cec *cec = data; + + cec_delete_adapter(cec->adap); +} + +struct hdmirx_cec *snps_hdmirx_cec_register(struct hdmirx_cec_data *data) +{ + struct hdmirx_cec *cec; + unsigned int irqs; + int ret; + + /* + * Our device is just a convenience - we want to link to the real + * hardware device here, so that userspace can see the association + * between the HDMI hardware and its associated CEC chardev. + */ + cec = devm_kzalloc(data->dev, sizeof(*cec), GFP_KERNEL); + if (!cec) + return NULL; + + cec->dev = data->dev; + cec->irq = data->irq; + cec->ops = data->ops; + cec->hdmirx = data->hdmirx; + + hdmirx_cec_update_bits(cec, GLOBAL_SWENABLE, CEC_ENABLE, CEC_ENABLE); + hdmirx_cec_update_bits(cec, CEC_CONFIG, RX_AUTO_DRIVE_ACKNOWLEDGE, + RX_AUTO_DRIVE_ACKNOWLEDGE); + + hdmirx_cec_write(cec, CEC_TX_COUNT, 0); + hdmirx_cec_write(cec, CEC_INT_MASK_N, 0); + hdmirx_cec_write(cec, CEC_INT_CLEAR, ~0); + + cec->adap = cec_allocate_adapter(&hdmirx_cec_ops, cec, "snps-hdmirx", + CEC_CAP_DEFAULTS | CEC_CAP_MONITOR_ALL, + CEC_MAX_LOG_ADDRS); + if (IS_ERR(cec->adap)) { + dev_err(cec->dev, "cec adap allocate failed\n"); + return NULL; + } + + /* override the module pointer */ + cec->adap->owner = THIS_MODULE; + + ret = devm_add_action(cec->dev, hdmirx_cec_del, cec); + if (ret) { + cec_delete_adapter(cec->adap); + return NULL; + } + + irq_set_status_flags(cec->irq, IRQ_NOAUTOEN); + + ret = devm_request_threaded_irq(cec->dev, cec->irq, + hdmirx_cec_hardirq, + hdmirx_cec_thread, IRQF_ONESHOT, + "rk_hdmirx_cec", cec->adap); + if (ret) { + dev_err(cec->dev, "cec irq request failed\n"); + return NULL; + } + + cec->notify = cec_notifier_cec_adap_register(cec->dev, + NULL, cec->adap); + if (!cec->notify) { + dev_err(cec->dev, "cec notify register failed\n"); + return NULL; + } + + ret = cec_register_adapter(cec->adap, cec->dev); + if (ret < 0) { + dev_err(cec->dev, "cec register adapter failed\n"); + cec_unregister_adapter(cec->adap); + return NULL; + } + + irqs = CECTX_LINE_ERR | CECTX_NACK | CECRX_EOM | CECTX_DONE; + hdmirx_cec_write(cec, CEC_INT_MASK_N, irqs); + + /* + * CEC documentation says we must not call cec_delete_adapter + * after a successful call to cec_register_adapter(). + */ + devm_remove_action(cec->dev, hdmirx_cec_del, cec); + + enable_irq(cec->irq); + + return cec; +} + +void snps_hdmirx_cec_unregister(struct hdmirx_cec *cec) +{ + disable_irq(cec->irq); + + cec_unregister_adapter(cec->adap); +} diff --git a/drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.h b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.h new file mode 100644 index 000000000000..c55c403cdb9f --- /dev/null +++ b/drivers/media/platform/synopsys/hdmirx/snps_hdmirx_cec.h @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021 Rockchip Electronics Co. Ltd. + * + * Author: Shunqing Chen + */ + +#ifndef DW_HDMI_RX_CEC_H +#define DW_HDMI_RX_CEC_H + +struct snps_hdmirx_dev; + +struct hdmirx_cec_ops { + void (*write)(struct snps_hdmirx_dev *hdmirx_dev, int reg, u32 val); + u32 (*read)(struct snps_hdmirx_dev *hdmirx_dev, int reg); + void (*enable)(struct snps_hdmirx_dev *hdmirx); + void (*disable)(struct snps_hdmirx_dev *hdmirx); +}; + +struct hdmirx_cec_data { + struct snps_hdmirx_dev *hdmirx; + const struct hdmirx_cec_ops *ops; + struct device *dev; + int irq; +}; + +struct hdmirx_cec { + struct snps_hdmirx_dev *hdmirx; + struct device *dev; + const struct hdmirx_cec_ops *ops; + u32 addresses; + struct cec_adapter *adap; + struct cec_msg rx_msg; + unsigned int tx_status; + bool tx_done; + bool rx_done; + struct cec_notifier *notify; + int irq; +}; + +struct hdmirx_cec *snps_hdmirx_cec_register(struct hdmirx_cec_data *data); +void snps_hdmirx_cec_unregister(struct hdmirx_cec *cec); + +#endif /* DW_HDMI_RX_CEC_H */