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Signed-off-by: Xinliang Liu Signed-off-by: Xinwei Kong Signed-off-by: Andy Green --- drivers/gpu/drm/hisilicon/Kconfig | 1 + drivers/gpu/drm/hisilicon/Makefile | 3 +- drivers/gpu/drm/hisilicon/hisi_drm_dsi.c | 728 +++++++++++++++++++++++++++++++ drivers/gpu/drm/hisilicon/hisi_dsi_reg.h | 89 ++++ 4 files changed, 820 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/hisilicon/hisi_drm_dsi.c create mode 100644 drivers/gpu/drm/hisilicon/hisi_dsi_reg.h diff --git a/drivers/gpu/drm/hisilicon/Kconfig b/drivers/gpu/drm/hisilicon/Kconfig index 70aa8d1..f1c33c2 100644 --- a/drivers/gpu/drm/hisilicon/Kconfig +++ b/drivers/gpu/drm/hisilicon/Kconfig @@ -4,6 +4,7 @@ config DRM_HISI select DRM_KMS_HELPER select DRM_GEM_CMA_HELPER select DRM_KMS_CMA_HELPER + select DRM_MIPI_DSI help Choose this option if you have a hisilicon chipsets(hi6220). If M is selected the module will be called hisi-drm. diff --git a/drivers/gpu/drm/hisilicon/Makefile b/drivers/gpu/drm/hisilicon/Makefile index 3433c8b..5083c1f 100644 --- a/drivers/gpu/drm/hisilicon/Makefile +++ b/drivers/gpu/drm/hisilicon/Makefile @@ -1,4 +1,5 @@ hisi-drm-y := hisi_drm_drv.o \ - hisi_drm_ade.o + hisi_drm_ade.o \ + hisi_drm_dsi.o obj-$(CONFIG_DRM_HISI) += hisi-drm.o diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c b/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c new file mode 100644 index 0000000..7a6cf66 --- /dev/null +++ b/drivers/gpu/drm/hisilicon/hisi_drm_dsi.c @@ -0,0 +1,728 @@ +/* + * Hisilicon hi6220 SoC dsi driver + * + * Copyright (c) 2014-2015 Hisilicon Limited. + * Author: + * Xinliang Liu + * Xinliang Liu + * Xinwei Kong + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include +#include +#include + +#include +#include +#include +#include + +#include "hisi_dsi_reg.h" + +#define MAX_TX_ESC_CLK (10) +#define ROUND(x, y) ((x) / (y) + ((x) % (y) * 10 / (y) >= 5 ? 1 : 0)) +#define DEFAULT_MIPI_CLK_RATE 19200000 +#define DEFAULT_MIPI_CLK_PERIOD_PS (1000000000 / (DEFAULT_MIPI_CLK_RATE / 1000)) +#define R(x) ((u32)((((u64)(x) * (u64)1000 * (u64)mode->clock) / \ + phy->lane_byte_clk_kHz))) + +#define encoder_to_dsi(encoder) \ + container_of(encoder, struct hisi_dsi, encoder) +#define host_to_dsi(host) \ + container_of(host, struct hisi_dsi, host) + +struct mipi_phy_register { + u32 clk_t_lpx; + u32 clk_t_hs_prepare; + u32 clk_t_hs_zero; + u32 clk_t_hs_trial; + u32 clk_t_wakeup; + u32 data_t_lpx; + u32 data_t_hs_prepare; + u32 data_t_hs_zero; + u32 data_t_hs_trial; + u32 data_t_ta_go; + u32 data_t_ta_get; + u32 data_t_wakeup; + u32 hstx_ckg_sel; + u32 pll_fbd_div5f; + u32 pll_fbd_div1f; + u32 pll_fbd_2p; + u32 pll_enbwt; + u32 pll_fbd_p; + u32 pll_fbd_s; + u32 pll_pre_div1p; + u32 pll_pre_p; + u32 pll_vco_750M; + u32 pll_lpf_rs; + u32 pll_lpf_cs; + u32 clklp2hs_time; + u32 clkhs2lp_time; + u32 lp2hs_time; + u32 hs2lp_time; + u32 clk_to_data_delay; + u32 data_to_clk_delay; + u32 lane_byte_clk_kHz; + u32 clk_division; +}; + +struct dsi_hw_ctx { + void __iomem *base; + struct clk *dsi_cfg_clk; +}; + +struct hisi_dsi { + struct drm_encoder encoder; + struct drm_display_mode cur_mode; + struct dsi_hw_ctx *ctx; + struct mipi_phy_register phy; + + u32 lanes; + enum mipi_dsi_pixel_format format; + unsigned long mode_flags; + bool enable; +}; + +struct dsi_data { + struct hisi_dsi dsi; + struct dsi_hw_ctx ctx; +}; + +struct dsi_phy_seq_info { + u32 min_range_kHz; + u32 max_range_kHz; + u32 pll_vco_750M; + u32 hstx_ckg_sel; +}; + +static const struct dsi_phy_seq_info dphy_seq_info[] = { + { 46000, 62000, 1, 7 }, + { 62000, 93000, 0, 7 }, + { 93000, 125000, 1, 6 }, + { 125000, 187000, 0, 6 }, + { 187000, 250000, 1, 5 }, + { 250000, 375000, 0, 5 }, + { 375000, 500000, 1, 4 }, + { 500000, 750000, 0, 4 }, + { 750000, 1000000, 1, 0 }, + { 1000000, 1500000, 0, 0 } +}; + +static void set_dsi_phy_rate_equal_or_faster(u32 phy_freq_kHz, + struct mipi_phy_register *phy) +{ + u32 ui = 0; + u32 cfg_clk_ps = DEFAULT_MIPI_CLK_PERIOD_PS; + u32 i = 0; + u32 q_pll = 1; + u32 m_pll = 0; + u32 n_pll = 0; + u32 r_pll = 1; + u32 m_n = 0; + u32 m_n_int = 0; + u64 f_kHz; + u64 temp; + u64 tmp_kHz = phy_freq_kHz; + + do { + f_kHz = tmp_kHz; + + /* Find the PLL clock range from the table */ + for (i = 0; i < ARRAY_SIZE(dphy_seq_info); i++) + if (f_kHz > dphy_seq_info[i].min_range_kHz && + f_kHz <= dphy_seq_info[i].max_range_kHz) + break; + + if (i == ARRAY_SIZE(dphy_seq_info)) { + DRM_ERROR("%lldkHz out of range\n", f_kHz); + return; + } + + phy->pll_vco_750M = dphy_seq_info[i].pll_vco_750M; + phy->hstx_ckg_sel = dphy_seq_info[i].hstx_ckg_sel; + + if (phy->hstx_ckg_sel <= 7 && + phy->hstx_ckg_sel >= 4) + q_pll = 0x10 >> (7 - phy->hstx_ckg_sel); + + temp = f_kHz * (u64)q_pll * (u64)cfg_clk_ps; + m_n_int = temp / (u64)1000000000; + m_n = (temp % (u64)1000000000) / (u64)100000000; + + if (m_n_int % 2 == 0) { + if (m_n * 6 >= 50) { + n_pll = 2; + m_pll = (m_n_int + 1) * n_pll; + } else if (m_n * 6 >= 30) { + n_pll = 3; + m_pll = m_n_int * n_pll + 2; + } else { + n_pll = 1; + m_pll = m_n_int * n_pll; + } + } else { + if (m_n * 6 >= 50) { + n_pll = 1; + m_pll = (m_n_int + 1) * n_pll; + } else if (m_n * 6 >= 30) { + n_pll = 1; + m_pll = (m_n_int + 1) * n_pll; + } else if (m_n * 6 >= 10) { + n_pll = 3; + m_pll = m_n_int * n_pll + 1; + } else { + n_pll = 2; + m_pll = m_n_int * n_pll; + } + } + + if (n_pll == 1) { + phy->pll_fbd_p = 0; + phy->pll_pre_div1p = 1; + } else { + phy->pll_fbd_p = n_pll; + phy->pll_pre_div1p = 0; + } + + if (phy->pll_fbd_2p <= 7 && phy->pll_fbd_2p >= 4) + r_pll = 0x10 >> (7 - phy->pll_fbd_2p); + + if (m_pll == 2) { + phy->pll_pre_p = 0; + phy->pll_fbd_s = 0; + phy->pll_fbd_div1f = 0; + phy->pll_fbd_div5f = 1; + } else if (m_pll >= 2 * 2 * r_pll && m_pll <= 2 * 4 * r_pll) { + phy->pll_pre_p = m_pll / (2 * r_pll); + phy->pll_fbd_s = 0; + phy->pll_fbd_div1f = 1; + phy->pll_fbd_div5f = 0; + } else if (m_pll >= 2 * 5 * r_pll && m_pll <= 2 * 150 * r_pll) { + if (((m_pll / (2 * r_pll)) % 2) == 0) { + phy->pll_pre_p = + (m_pll / (2 * r_pll)) / 2 - 1; + phy->pll_fbd_s = + (m_pll / (2 * r_pll)) % 2 + 2; + } else { + phy->pll_pre_p = + (m_pll / (2 * r_pll)) / 2; + phy->pll_fbd_s = + (m_pll / (2 * r_pll)) % 2; + } + phy->pll_fbd_div1f = 0; + phy->pll_fbd_div5f = 0; + } else { + phy->pll_pre_p = 0; + phy->pll_fbd_s = 0; + phy->pll_fbd_div1f = 0; + phy->pll_fbd_div5f = 1; + } + + f_kHz = (u64)1000000000 * (u64)m_pll / + ((u64)cfg_clk_ps * (u64)n_pll * (u64)q_pll); + + if (f_kHz >= phy_freq_kHz) + break; + + tmp_kHz += 10; + + } while (1); + + ui = 1000000 / f_kHz; + + phy->clk_t_lpx = ROUND(50, 8 * ui); + phy->clk_t_hs_prepare = ROUND(133, 16 * ui) - 1; + + phy->clk_t_hs_zero = ROUND(262, 8 * ui); + phy->clk_t_hs_trial = 2 * (ROUND(60, 8 * ui) - 1); + phy->clk_t_wakeup = ROUND(1000000, (cfg_clk_ps / 1000) - 1); + if (phy->clk_t_wakeup > 0xff) + phy->clk_t_wakeup = 0xff; + phy->data_t_wakeup = phy->clk_t_wakeup; + phy->data_t_lpx = phy->clk_t_lpx; + phy->data_t_hs_prepare = ROUND(125 + 10 * ui, 16 * ui) - 1; + phy->data_t_hs_zero = ROUND(105 + 6 * ui, 8 * ui); + phy->data_t_hs_trial = 2 * (ROUND(60 + 4 * ui, 8 * ui) - 1); + phy->data_t_ta_go = 3; + phy->data_t_ta_get = 4; + + phy->pll_enbwt = 1; + phy->clklp2hs_time = ROUND(407, 8 * ui) + 12; + phy->clkhs2lp_time = ROUND(105 + 12 * ui, 8 * ui); + phy->lp2hs_time = ROUND(240 + 12 * ui, 8 * ui) + 1; + phy->hs2lp_time = phy->clkhs2lp_time; + phy->clk_to_data_delay = 1 + phy->clklp2hs_time; + phy->data_to_clk_delay = ROUND(60 + 52 * ui, 8 * ui) + + phy->clkhs2lp_time; + + phy->lane_byte_clk_kHz = f_kHz / 8; + phy->clk_division = phy->lane_byte_clk_kHz / MAX_TX_ESC_CLK; + if (phy->lane_byte_clk_kHz % MAX_TX_ESC_CLK) + phy->clk_division++; +} + +static u32 dsi_get_dpi_color_coding(enum mipi_dsi_pixel_format format) +{ + u32 val; + + /* TODO: only support RGB888 now, to support more */ + switch (format) { + case MIPI_DSI_FMT_RGB888: + val = DSI_24BITS_1; + break; + default: + val = DSI_24BITS_1; + break; + } + + return val; +} + +static void dsi_mipi_phy_clks(void __iomem *base, + struct mipi_phy_register *phy, + u32 lanes) +{ + u32 delay_count; + bool is_ready; + u32 val; + u32 i; + + /* set lanes value */ + val = (lanes - 1) | (PHY_STOP_WAIT_TIME << 8); + writel(val, base + PHY_IF_CFG); + + /* set phy clk division */ + val = readl(base + CLKMGR_CFG) | phy->clk_division; + writel(val, base + CLKMGR_CFG); + + /* clean up phy set param */ + writel(0, base + PHY_RSTZ); + writel(0, base + PHY_TST_CTRL0); + writel(1, base + PHY_TST_CTRL0); + writel(0, base + PHY_TST_CTRL0); + + /* clock lane Timing control - TLPX */ + dsi_phy_tst_set(base, 0x10010, phy->clk_t_lpx); + + /* clock lane Timing control - THS-PREPARE */ + dsi_phy_tst_set(base, 0x10011, phy->clk_t_hs_prepare); + + /* clock lane Timing control - THS-ZERO */ + dsi_phy_tst_set(base, 0x10012, phy->clk_t_hs_zero); + + /* clock lane Timing control - THS-TRAIL */ + dsi_phy_tst_set(base, 0x10013, phy->clk_t_hs_trial); + + /* clock lane Timing control - TWAKEUP */ + dsi_phy_tst_set(base, 0x10014, phy->clk_t_wakeup); + + /* data lane */ + for (i = 0; i < lanes; i++) { + /* Timing control - TLPX*/ + dsi_phy_tst_set(base, 0x10020 + (i << 4), phy->data_t_lpx); + + /* Timing control - THS-PREPARE */ + dsi_phy_tst_set(base, 0x10021 + (i << 4), + phy->data_t_hs_prepare); + + /* Timing control - THS-ZERO */ + dsi_phy_tst_set(base, 0x10022 + (i << 4), phy->data_t_hs_zero); + + /* Timing control - THS-TRAIL */ + dsi_phy_tst_set(base, 0x10023 + (i << 4), phy->data_t_hs_trial); + + /* Timing control - TTA-GO */ + dsi_phy_tst_set(base, 0x10024 + (i << 4), phy->data_t_ta_go); + + /* Timing control - TTA-GET */ + dsi_phy_tst_set(base, 0x10025 + (i << 4), phy->data_t_ta_get); + + /* Timing control - TWAKEUP */ + dsi_phy_tst_set(base, 0x10026 + (i << 4), phy->data_t_wakeup); + } + + /* physical configuration I */ + dsi_phy_tst_set(base, 0x10060, phy->hstx_ckg_sel); + + /* physical configuration pll II */ + val = (phy->pll_fbd_div5f << 5) + (phy->pll_fbd_div1f << 4) + + (phy->pll_fbd_2p << 1) + phy->pll_enbwt; + dsi_phy_tst_set(base, 0x10063, val); + + /* physical configuration pll II */ + dsi_phy_tst_set(base, 0x10064, phy->pll_fbd_p); + + /* physical configuration pll III */ + dsi_phy_tst_set(base, 0x10065, phy->pll_fbd_s); + + /*physical configuration pll IV*/ + val = (phy->pll_pre_div1p << 7) + phy->pll_pre_p; + dsi_phy_tst_set(base, 0x10066, val); + + /*physical configuration pll V*/ + val = (phy->pll_vco_750M << 4) + (phy->pll_lpf_rs << 2) + + phy->pll_lpf_cs + BIT(5); + dsi_phy_tst_set(base, 0x10067, val); + + writel(BIT(2), base + PHY_RSTZ); + udelay(1); + writel(BIT(2) | BIT(0), base + PHY_RSTZ); + udelay(1); + writel(BIT(2) | BIT(1) | BIT(0), base + PHY_RSTZ); + usleep_range(1000, 1500); + + /* wait for phy's clock ready */ + delay_count = 0; + is_ready = false; + while (1) { + val = readl(base + PHY_STATUS); + if (((BIT(0) | BIT(2)) & val) || delay_count > 100) { + is_ready = (delay_count < 100) ? true : false; + delay_count = 0; + break; + } + + udelay(1); + ++delay_count; + } + + if (!is_ready) + DRM_INFO("phylock and phystopstateclklane is not ready.\n"); +} + +static void dsi_set_mode_timing(void __iomem *base, + struct mipi_phy_register *phy, + struct drm_display_mode *mode, + enum mipi_dsi_pixel_format format) +{ + u32 hfp, hbp, hsw, vfp, vbp, vsw; + u32 hline_time; + u32 hsa_time; + u32 hbp_time; + u32 pixel_clk_kHz; + int htot, vtot; + u32 val; + + /* DSI color coding setting */ + val = dsi_get_dpi_color_coding(format); + writel(val, base + DPI_COLOR_CODING); + + /* DSI format and pol setting */ + val = (mode->flags & DRM_MODE_FLAG_NHSYNC ? 1 : 0) << 2; + val |= (mode->flags & DRM_MODE_FLAG_NVSYNC ? 1 : 0) << 1; + writel(val, base + DPI_CFG_POL); + + /* + * The DSI IP accepts vertical timing using lines as normal, + * but horizontal timing is a mixture of pixel-clocks for the + * active region and byte-lane clocks for the blanking-related + * timings. hfp is specified as the total hline_time in byte- + * lane clocks minus hsa, hbp and active. + */ + pixel_clk_kHz = mode->clock; + htot = mode->htotal; + vtot = mode->vtotal; + hfp = mode->hsync_start - mode->hdisplay; + hbp = mode->htotal - mode->hsync_end; + hsw = mode->hsync_end - mode->hsync_start; + vfp = mode->vsync_start - mode->vdisplay; + vbp = mode->vtotal - mode->vsync_end; + vsw = mode->vsync_end - mode->vsync_start; + if (vsw > 15) { + DRM_INFO("vsw exceeded 15\n"); + vtot -= vsw - 15; + vsw = 15; + } + + hsa_time = (hsw * phy->lane_byte_clk_kHz) / pixel_clk_kHz; + hbp_time = (hbp * phy->lane_byte_clk_kHz) / pixel_clk_kHz; + hline_time = (((u64)htot * (u64)phy->lane_byte_clk_kHz)) / + pixel_clk_kHz; + + if ((R(hline_time) / 1000) > htot) { + DRM_INFO("--: hline_time=%d\n", hline_time); + hline_time--; + } + + if ((R(hline_time) / 1000) < htot) { + DRM_INFO("++: hline_time=%d\n", hline_time); + hline_time++; + } + + /* all specified in byte-lane clocks */ + writel(hsa_time, base + VID_HSA_TIME); + writel(hbp_time, base + VID_HBP_TIME); + writel(hline_time, base + VID_HLINE_TIME); + + writel(vsw, base + VID_VSA_LINES); + writel(vbp, base + VID_VBP_LINES); + writel(vfp, base + VID_VFP_LINES); + writel(mode->vdisplay, base + VID_VACTIVE_LINES); + writel(mode->hdisplay, base + VID_PKT_SIZE); +} + +static void dsi_set_video_mode_type(void __iomem *base, + struct mipi_phy_register *phy, + unsigned long flags) +{ + u32 val; + u32 mode_mask = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + u32 non_burst_sync_pulse = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + u32 non_burst_sync_event = MIPI_DSI_MODE_VIDEO; + + /* + * choose video type + */ + if ((flags & mode_mask) == non_burst_sync_pulse) + val = DSI_NON_BURST_SYNC_PULSES; + else if ((flags & mode_mask) == non_burst_sync_event) + val = DSI_NON_BURST_SYNC_EVENTS; + else + val = DSI_BURST_SYNC_PULSES_1; + + writel(val, base + VID_MODE_CFG); + /* TODO: to support LCD panel need to set LP command transfer */ +} + +static void dsi_mipi_init(struct hisi_dsi *dsi) +{ + struct dsi_hw_ctx *ctx = dsi->ctx; + struct mipi_phy_register *phy = &dsi->phy; + struct drm_display_mode *mode = &dsi->cur_mode; + void __iomem *base = ctx->base; + u32 dphy_freq_kHz; + + /* count phy params */ + dphy_freq_kHz = mode->clock * 24 / dsi->lanes; + set_dsi_phy_rate_equal_or_faster(dphy_freq_kHz, phy); + + /* reset Core */ + writel(0, base + PWR_UP); + + /* set phy clocks */ + dsi_mipi_phy_clks(base, phy, dsi->lanes); + + /* set dsi mode */ + dsi_set_mode_timing(base, phy, mode, dsi->format); + + /* set video mode type and low power */ + dsi_set_video_mode_type(base, phy, dsi->mode_flags); + + /* DSI and D-PHY Initialization */ + writel(DSI_VIDEO_MODE, base + MODE_CFG); + writel(BIT(0), base + LPCLK_CTRL); + writel(BIT(0), base + PWR_UP); +} + +static void dsi_encoder_disable(struct drm_encoder *encoder) +{ + struct hisi_dsi *dsi = encoder_to_dsi(encoder); + struct dsi_hw_ctx *ctx = dsi->ctx; + void __iomem *base = ctx->base; + + DRM_DEBUG_DRIVER("enter\n"); + if (!dsi->enable) + return; + + writel(0, base + PWR_UP); + writel(0, base + LPCLK_CTRL); + writel(0, base + PHY_RSTZ); + clk_disable_unprepare(ctx->dsi_cfg_clk); + + dsi->enable = false; + DRM_DEBUG_DRIVER("exit success.\n"); +} + +static void dsi_encoder_enable(struct drm_encoder *encoder) +{ + struct hisi_dsi *dsi = encoder_to_dsi(encoder); + struct dsi_hw_ctx *ctx = dsi->ctx; + int ret; + + DRM_DEBUG_DRIVER("enter.\n"); + if (dsi->enable) + return; + + /* mipi dphy clock enable */ + ret = clk_prepare_enable(ctx->dsi_cfg_clk); + if (ret) { + DRM_ERROR("fail to enable dsi_cfg_clk: %d\n", ret); + return; + } + + dsi_mipi_init(dsi); + + dsi->enable = true; + DRM_DEBUG_DRIVER("exit success.\n"); +} + +static void dsi_encoder_mode_set(struct drm_encoder *encoder, + struct drm_display_mode *mode, + struct drm_display_mode *adj_mode) +{ + struct hisi_dsi *dsi = encoder_to_dsi(encoder); + + DRM_DEBUG_DRIVER("enter.\n"); + drm_mode_copy(&dsi->cur_mode, adj_mode); + DRM_DEBUG_DRIVER("exit success.\n"); +} + +static int dsi_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct drm_display_mode *mode = &crtc_state->mode; + + DRM_DEBUG_DRIVER("enter.\n"); + if (mode->flags & DRM_MODE_FLAG_INTERLACE) { + DRM_ERROR("not support INTERLACE mode\n"); + return MODE_NO_INTERLACE; + } + + /* pixel clock support range is (1190494208/64, 1190494208)Hz */ + if (mode->clock < 18602 || mode->clock > 1190494) { + DRM_ERROR("mode clock not support\n"); + return MODE_CLOCK_RANGE; + } + + DRM_DEBUG_DRIVER("exit success.\n"); + return 0; +} + +static const struct drm_encoder_helper_funcs hisi_encoder_helper_funcs = { + .atomic_check = dsi_encoder_atomic_check, + .mode_set = dsi_encoder_mode_set, + .enable = dsi_encoder_enable, + .disable = dsi_encoder_disable +}; + +static const struct drm_encoder_funcs hisi_encoder_funcs = { + .destroy = drm_encoder_cleanup, +}; + +static int hisi_drm_encoder_init(struct drm_device *dev, + struct drm_encoder *encoder) +{ + int ret; + + encoder->possible_crtcs = 1; + ret = drm_encoder_init(dev, encoder, &hisi_encoder_funcs, + DRM_MODE_ENCODER_TMDS); + if (ret) { + DRM_ERROR("failed to init dsi encoder\n"); + return ret; + } + + drm_encoder_helper_add(encoder, &hisi_encoder_helper_funcs); + + return 0; +} + +static int dsi_bind(struct device *dev, struct device *master, void *data) +{ + struct dsi_data *ddata = dev_get_drvdata(dev); + struct hisi_dsi *dsi = &ddata->dsi; + struct drm_device *drm_dev = data; + int ret; + + ret = hisi_drm_encoder_init(drm_dev, &dsi->encoder); + if (ret) + return ret; + + return 0; +} + +static void dsi_unbind(struct device *dev, struct device *master, void *data) +{ + /* do nothing */ +} + +static const struct component_ops dsi_ops = { + .bind = dsi_bind, + .unbind = dsi_unbind, +}; + +static int dsi_parse_dt(struct platform_device *pdev, struct hisi_dsi *dsi) +{ + struct dsi_hw_ctx *ctx = dsi->ctx; + struct resource *res; + + + ctx->dsi_cfg_clk = devm_clk_get(&pdev->dev, "pclk_dsi"); + if (IS_ERR(ctx->dsi_cfg_clk)) { + DRM_ERROR("failed to get dsi plck clock\n"); + return PTR_ERR(ctx->dsi_cfg_clk); + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ctx->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ctx->base)) { + DRM_ERROR("failed to remap dsi io region\n"); + return PTR_ERR(ctx->base); + } + + return 0; +} + +static int dsi_probe(struct platform_device *pdev) +{ + struct dsi_data *data; + struct hisi_dsi *dsi; + struct dsi_hw_ctx *ctx; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + DRM_ERROR("failed to allocate dsi data.\n"); + return -ENOMEM; + } + dsi = &data->dsi; + ctx = &data->ctx; + dsi->ctx = ctx; + + ret = dsi_parse_dt(pdev, dsi); + if (ret) + return ret; + + platform_set_drvdata(pdev, data); + + return component_add(&pdev->dev, &dsi_ops); +} + +static int dsi_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &dsi_ops); + + return 0; +} + +static const struct of_device_id dsi_of_match[] = { + {.compatible = "hisilicon,hi6220-dsi"}, + { } +}; +MODULE_DEVICE_TABLE(of, dsi_of_match); + +static struct platform_driver dsi_driver = { + .probe = dsi_probe, + .remove = dsi_remove, + .driver = { + .name = "hisi-dsi", + .owner = THIS_MODULE, + .of_match_table = dsi_of_match, + }, +}; + +module_platform_driver(dsi_driver); + +MODULE_AUTHOR("Xinliang Liu "); +MODULE_AUTHOR("Xinliang Liu "); +MODULE_AUTHOR("Xinwei Kong "); +MODULE_DESCRIPTION("hisilicon hi6220 SoC dsi driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/hisilicon/hisi_dsi_reg.h b/drivers/gpu/drm/hisilicon/hisi_dsi_reg.h new file mode 100644 index 0000000..db8f9df --- /dev/null +++ b/drivers/gpu/drm/hisilicon/hisi_dsi_reg.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2014-2015 Hisilicon Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef __HISI_DSI_REG_H__ +#define __HISI_DSI_REG_H__ + +/* + * regs + */ +#define PWR_UP (0x4) /* Core power-up */ +#define PHY_IF_CFG (0xA4) /* D-PHY interface configuration */ +#define CLKMGR_CFG (0x8) /* the internal clock dividers */ +#define PHY_RSTZ (0xA0) /* D-PHY reset control */ +#define PHY_TST_CTRL0 (0xB4) /* D-PHY test interface control 0 */ +#define PHY_TST_CTRL1 (0xB8) /* D-PHY test interface control 1 */ +#define DPI_VCID (0xC) /* DPI virtual channel id */ +#define DPI_COLOR_CODING (0x10) /* DPI color coding */ +#define DPI_CFG_POL (0x14) /* DPI polarity configuration */ +#define VID_HSA_TIME (0x48) /* Horizontal Sync Active time */ +#define VID_HBP_TIME (0x4C) /* Horizontal Back Porch time */ +#define VID_HLINE_TIME (0x50) /* Line time */ +#define VID_VSA_LINES (0x54) /* Vertical Sync Active period */ +#define VID_VBP_LINES (0x58) /* Vertical Back Porch period */ +#define VID_VFP_LINES (0x5C) /* Vertical Front Porch period */ +#define VID_VACTIVE_LINES (0x60) /* Vertical resolution */ +#define VID_PKT_SIZE (0x3C) /* Video packet size */ +#define VID_MODE_CFG (0x38) /* Video mode configuration */ +#define DPI_LP_CMD_TIM (0x18) /* Low-power command timing config */ +#define PHY_TMR_CFG (0x9C) /* Data lanes timing configuration */ +#define BTA_TO_CNT (0x8C) /* Response timeout definition */ +#define PHY_TMR_LPCLK_CFG (0x98) /* clock lane timing configuration */ +#define CLK_DATA_TMR_CFG (0xCC) +#define LPCLK_CTRL (0x94) /* Low-power in clock lane */ +#define PCKHDL_CFG (0x2C) /* Packet handler configuration */ +#define EDPI_CMD_SIZE (0x64) /* Size for eDPI packets */ +#define MODE_CFG (0x34) /* Video or Command mode selection */ +#define PHY_STATUS (0xB0) /* D-PHY PPI status interface */ + +#define PHY_STOP_WAIT_TIME (0x30) + +/* + * regs relevant enum + */ +enum dpi_color_coding { + DSI_24BITS_1 = 5, +}; + +enum dsi_video_mode_type { + DSI_NON_BURST_SYNC_PULSES = 0, + DSI_NON_BURST_SYNC_EVENTS, + DSI_BURST_SYNC_PULSES_1, + DSI_BURST_SYNC_PULSES_2 +}; + +enum dsi_work_mode { + DSI_VIDEO_MODE = 0, + DSI_COMMAND_MODE +}; + +/* + * regs Write/Read functions + */ +static inline void dsi_phy_tst_set(void __iomem *base, u32 reg, u32 val) +{ + writel(reg, base + PHY_TST_CTRL1); + /* reg addr written at first */ + wmb(); + writel(0x02, base + PHY_TST_CTRL0); + /* cmd1 sent for write */ + wmb(); + writel(0x00, base + PHY_TST_CTRL0); + /* cmd2 sent for write */ + wmb(); + writel(val, base + PHY_TST_CTRL1); + /* Then write data */ + wmb(); + writel(0x02, base + PHY_TST_CTRL0); + /* cmd2 sent for write */ + wmb(); + writel(0x00, base + PHY_TST_CTRL0); +} + +#endif /* __HISI_DRM_DSI_H__ */