This patch adds support to Audio for both adv7511 and adv7533 bridge chips. This patch was originally from [1] by Lars-Peter Clausen <lars@xxxxxxxxxx> and was adapted by Archit Taneja <architt@xxxxxxxxxxxxxx> and Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>. 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@xxxxxxxx> Cc: Archit Taneja <architt@xxxxxxxxxxxxxx> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Cc: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> Cc: "Ville Syrjälä" <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> Cc: Andy Green <andy@xxxxxxxxxxx> Cc: Dave Long <dave.long@xxxxxxxxxx> Cc: Guodong Xu <guodong.xu@xxxxxxxxxx> Cc: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx> Cc: Mark Brown <broonie@xxxxxxxxxx> Cc: Lars-Peter Clausen <lars@xxxxxxxxxx> Cc: Jose Abreu <joabreu@xxxxxxxxxxxx> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx> --- 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 diff --git a/drivers/gpu/drm/bridge/adv7511/Kconfig b/drivers/gpu/drm/bridge/adv7511/Kconfig index d2b0499..e3975e9 100644 --- a/drivers/gpu/drm/bridge/adv7511/Kconfig +++ b/drivers/gpu/drm/bridge/adv7511/Kconfig @@ -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. diff --git a/drivers/gpu/drm/bridge/adv7511/Makefile b/drivers/gpu/drm/bridge/adv7511/Makefile index 9019327..ad7245d 100644 --- a/drivers/gpu/drm/bridge/adv7511/Makefile +++ b/drivers/gpu/drm/bridge/adv7511/Makefile @@ -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 diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h index c7002a0..2e4d340 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -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 diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c new file mode 100644 index 0000000..0e0ea6b --- /dev/null +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c @@ -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; + } +} diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index f8eb7f8..3756994 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -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); -- 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
