@@ -3,6 +3,7 @@ config DRM_I2C_ADV7511
depends on OF
select DRM_KMS_HELPER
select REGMAP_I2C
+ select SND_SOC_HDMI_CODEC if SND_SOC
help
Support for the Analog Device ADV7511(W) and ADV7513 HDMI encoders.
@@ -1,3 +1,3 @@
-adv7511-y := adv7511_drv.o
+adv7511-y := adv7511_drv.o adv7511_audio.o
adv7511-$(CONFIG_DRM_I2C_ADV7533) += adv7533.o
obj-$(CONFIG_DRM_I2C_ADV7511) += adv7511.o
@@ -23,6 +23,8 @@ struct adv7511;
int adv7511_packet_enable(struct adv7511 *adv7511, unsigned int packet);
int adv7511_packet_disable(struct adv7511 *adv7511, unsigned int packet);
+int adv7511_audio_init(struct device *dev);
+void adv7511_audio_exit(struct device *dev);
#define ADV7511_REG_CHIP_REVISION 0x00
#define ADV7511_REG_N0 0x01
@@ -317,6 +319,8 @@ struct adv7511 {
struct drm_display_mode curr_mode;
unsigned int f_tmds;
+ unsigned int f_audio;
+ unsigned int audio_source;
unsigned int current_edid_segment;
uint8_t edid_buf[256];
@@ -342,6 +346,7 @@ struct adv7511 {
bool use_timing_gen;
enum adv7511_type type;
+ struct platform_device *audio_pdev;
};
#ifdef CONFIG_DRM_I2C_ADV7533
new file mode 100644
@@ -0,0 +1,199 @@
+/*
+ * Analog Devices ADV7511 HDMI transmitter driver
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Copyright (c) 2016, Linaro Limited
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <sound/core.h>
+#include <sound/hdmi-codec.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include "adv7511.h"
+
+static void adv7511_calc_cts_n(unsigned int f_tmds, unsigned int fs,
+ unsigned int *cts, unsigned int *n)
+{
+ switch (fs) {
+ case 32000:
+ *n = 4096;
+ break;
+ case 44100:
+ *n = 6272;
+ break;
+ case 48000:
+ *n = 6144;
+ break;
+ }
+
+ *cts = ((f_tmds * *n) / (128 * fs)) * 1000;
+}
+
+static int adv7511_update_cts_n(struct adv7511 *adv7511)
+{
+ unsigned int cts = 0;
+ unsigned int n = 0;
+
+ adv7511_calc_cts_n(adv7511->f_tmds, adv7511->f_audio, &cts, &n);
+
+ regmap_write(adv7511->regmap, ADV7511_REG_N0, (n >> 16) & 0xf);
+ regmap_write(adv7511->regmap, ADV7511_REG_N1, (n >> 8) & 0xff);
+ regmap_write(adv7511->regmap, ADV7511_REG_N2, n & 0xff);
+
+ regmap_write(adv7511->regmap, ADV7511_REG_CTS_MANUAL0,
+ (cts >> 16) & 0xf);
+ regmap_write(adv7511->regmap, ADV7511_REG_CTS_MANUAL1,
+ (cts >> 8) & 0xff);
+ regmap_write(adv7511->regmap, ADV7511_REG_CTS_MANUAL2,
+ cts & 0xff);
+
+ return 0;
+}
+
+int adv7511_hdmi_hw_params(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *fmt,
+ struct hdmi_codec_params *hparms)
+{
+ struct adv7511 *adv7511 = dev_get_drvdata(dev);
+ unsigned int audio_source, i2s_format = 0;
+ unsigned int invert_clock;
+ unsigned int rate;
+ unsigned int len;
+
+ switch (hparms->sample_rate) {
+ case 32000:
+ rate = ADV7511_SAMPLE_FREQ_32000;
+ break;
+ case 44100:
+ rate = ADV7511_SAMPLE_FREQ_44100;
+ break;
+ case 48000:
+ rate = ADV7511_SAMPLE_FREQ_48000;
+ break;
+ case 88200:
+ rate = ADV7511_SAMPLE_FREQ_88200;
+ break;
+ case 96000:
+ rate = ADV7511_SAMPLE_FREQ_96000;
+ break;
+ case 176400:
+ rate = ADV7511_SAMPLE_FREQ_176400;
+ break;
+ case 192000:
+ rate = ADV7511_SAMPLE_FREQ_192000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (hparms->sample_width) {
+ case 16:
+ len = ADV7511_I2S_SAMPLE_LEN_16;
+ break;
+ case 18:
+ len = ADV7511_I2S_SAMPLE_LEN_18;
+ break;
+ case 20:
+ len = ADV7511_I2S_SAMPLE_LEN_20;
+ break;
+ case 24:
+ len = ADV7511_I2S_SAMPLE_LEN_24;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt->fmt) {
+ case HDMI_I2S:
+ audio_source = ADV7511_AUDIO_SOURCE_I2S;
+ i2s_format = ADV7511_I2S_FORMAT_I2S;
+ break;
+ case HDMI_RIGHT_J:
+ audio_source = ADV7511_AUDIO_SOURCE_I2S;
+ i2s_format = ADV7511_I2S_FORMAT_RIGHT_J;
+ break;
+ case HDMI_LEFT_J:
+ audio_source = ADV7511_AUDIO_SOURCE_I2S;
+ i2s_format = ADV7511_I2S_FORMAT_LEFT_J;
+ break;
+// case HDMI_SPDIF:
+// audio_source = ADV7511_AUDIO_SOURCE_SPDIF;
+// break;
+ default:
+ return -EINVAL;
+ }
+
+ invert_clock = fmt->bit_clk_inv;
+
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_SOURCE, 0x70,
+ audio_source << 4);
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CONFIG, BIT(6),
+ invert_clock << 6);
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_I2S_CONFIG, 0x03,
+ i2s_format);
+
+ adv7511->audio_source = audio_source;
+
+ adv7511->f_audio = hparms->sample_rate;
+
+ adv7511_update_cts_n(adv7511);
+
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CFG3,
+ ADV7511_AUDIO_CFG3_LEN_MASK, len);
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_I2C_FREQ_ID_CFG,
+ ADV7511_I2C_FREQ_ID_CFG_RATE_MASK, rate << 4);
+ regmap_write(adv7511->regmap, 0x73, 0x1);
+
+ return 0;
+}
+
+static int audio_startup(struct device *dev, void *data)
+{
+ struct adv7511 *adv7511 = dev_get_drvdata(dev);
+
+ regmap_update_bits(adv7511->regmap, ADV7511_REG_AUDIO_CONFIG,
+ BIT(7), 0);
+ return 0;
+}
+
+static void audio_shutdown(struct device *dev, void *data)
+{
+
+}
+
+static const struct hdmi_codec_ops adv7511_codec_ops = {
+ .hw_params = adv7511_hdmi_hw_params,
+ .audio_shutdown = audio_shutdown,
+ .audio_startup = audio_startup,
+};
+
+static struct hdmi_codec_pdata codec_data = {
+ .ops = &adv7511_codec_ops,
+ .max_i2s_channels = 2,
+ .i2s = 1,
+};
+
+int adv7511_audio_init(struct device *dev)
+{
+ struct adv7511 *adv7511 = dev_get_drvdata(dev);
+
+ adv7511->audio_pdev = platform_device_register_data(dev,
+ HDMI_CODEC_DRV_NAME,
+ PLATFORM_DEVID_AUTO,
+ &codec_data,
+ sizeof(codec_data));
+ return PTR_ERR_OR_ZERO(adv7511->audio_pdev);
+}
+
+void adv7511_audio_exit(struct device *dev)
+{
+ struct adv7511 *adv7511 = dev_get_drvdata(dev);
+
+ if (adv7511->audio_pdev) {
+ platform_device_unregister(adv7511->audio_pdev);
+ adv7511->audio_pdev = NULL;
+ }
+}
@@ -1037,6 +1037,9 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
goto err_unregister_cec;
}
+ dev_set_drvdata(dev, adv7511);
+ adv7511_audio_init(dev);
+
return 0;
err_unregister_cec:
@@ -1058,6 +1061,8 @@ static int adv7511_remove(struct i2c_client *i2c)
drm_bridge_remove(&adv7511->bridge);
+ adv7511_audio_exit(&i2c->dev);
+
i2c_unregister_device(adv7511->i2c_edid);
kfree(adv7511->edid);
This patch adds support to Audio for both adv7511 and adv7533 bridge chips. This patch was originally from [1] by Lars-Peter Clausen <lars@metafoo.de> and was adapted by Archit Taneja <architt@codeaurora.org> and Srinivas Kandagatla <srinivas.kandagatla@linaro.org>. Then I heavily reworked it to use the hdmi-codec driver. So credit to them, but blame to me. [1] https://github.com/analogdevicesinc/linux/blob/xcomm_zynq/drivers/gpu/drm/i2c/adv7511_audio.c Cc: David Airlie <airlied@linux.ie> Cc: Archit Taneja <architt@codeaurora.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Andy Green <andy@warmcat.com> Cc: Dave Long <dave.long@linaro.org> Cc: Guodong Xu <guodong.xu@linaro.org> Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Mark Brown <broonie@kernel.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Jose Abreu <joabreu@synopsys.com> Cc: dri-devel@lists.freedesktop.org Signed-off-by: John Stultz <john.stultz@linaro.org> --- v2: Integrated feedback from Srinivas drivers/gpu/drm/bridge/adv7511/Kconfig | 1 + drivers/gpu/drm/bridge/adv7511/Makefile | 2 +- drivers/gpu/drm/bridge/adv7511/adv7511.h | 5 + drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 199 +++++++++++++++++++++++++ drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 5 + 5 files changed, 211 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/bridge/adv7511/adv7511_audio.c -- 1.9.1