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[2a02:a449:4071:1:32d0:42ff:fe10:6983]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a72ab08f74dsm440755466b.169.2024.07.02.11.23.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 Jul 2024 11:23:24 -0700 (PDT) Message-ID: <3bd738a7-379f-4b93-befd-e6ee96e802b5@gmail.com> Date: Tue, 2 Jul 2024 20:23:24 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Johan Jonker Subject: [PATCH v8] drm/rockchip: rk3066_hdmi: add sound support To: heiko@sntech.de Cc: hjc@rock-chips.com, andy.yan@rock-chips.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, lgirdwood@gmail.com, broonie@kernel.org, linux-sound@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240702_112327_495025_CD825D8D X-CRM114-Status: GOOD ( 27.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add sound support to the RK3066 HDMI driver. The HDMI TX audio source is connected to I2S_8CH. Signed-off-by: Zheng Yang Signed-off-by: Johan Jonker --- Changed V8: return -EPROBE_DEFER as early as possible move rk3066_hdmi_audio_codec_init() function after rk3066_hdmi_register() restyle Changed V7: rebase --- drivers/gpu/drm/rockchip/Kconfig | 2 + drivers/gpu/drm/rockchip/rk3066_hdmi.c | 296 +++++++++++++++++++++++-- 2 files changed, 283 insertions(+), 15 deletions(-) -- 2.39.2 diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig index 1bf3e2829cd0..a32ee558408c 100644 --- a/drivers/gpu/drm/rockchip/Kconfig +++ b/drivers/gpu/drm/rockchip/Kconfig @@ -102,6 +102,8 @@ config ROCKCHIP_RGB config ROCKCHIP_RK3066_HDMI bool "Rockchip specific extensions for RK3066 HDMI" depends on DRM_ROCKCHIP + select SND_SOC_HDMI_CODEC if SND_SOC + select SND_SOC_ROCKCHIP_I2S if SND_SOC help This selects support for Rockchip SoC specific extensions for the RK3066 HDMI driver. If you want to enable diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c b/drivers/gpu/drm/rockchip/rk3066_hdmi.c index 784de990da1b..296094a3c405 100644 --- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c +++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c @@ -15,12 +15,20 @@ #include #include +#include + #include "rk3066_hdmi.h" #include "rockchip_drm_drv.h" #define DEFAULT_PLLA_RATE 30000000 +struct audio_info { + int channels; + int sample_rate; + int sample_width; +}; + struct hdmi_data_info { int vic; /* The CEA Video ID (VIC) of the current drm display mode. */ unsigned int enc_out_format; @@ -40,7 +48,6 @@ struct rk3066_hdmi_i2c { struct rk3066_hdmi { struct device *dev; - struct drm_device *drm_dev; struct regmap *grf_regmap; int irq; struct clk *hclk; @@ -54,9 +61,15 @@ struct rk3066_hdmi { unsigned int tmdsclk; + struct platform_device *audio_pdev; + struct audio_info audio; + bool audio_enable; + struct hdmi_data_info hdmi_data; }; +static int rk3066_hdmi_config_audio(struct rk3066_hdmi *hdmi, struct audio_info *audio); + static struct rk3066_hdmi *encoder_to_rk3066_hdmi(struct drm_encoder *encoder) { struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder); @@ -214,6 +227,23 @@ static int rk3066_hdmi_config_avi(struct rk3066_hdmi *hdmi, HDMI_INFOFRAME_AVI, 0, 0, 0); } +static int rk3066_hdmi_config_aai(struct rk3066_hdmi *hdmi, + struct audio_info *audio) +{ + union hdmi_infoframe frame; + int rc; + + rc = hdmi_audio_infoframe_init(&frame.audio); + + frame.audio.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; + frame.audio.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; + frame.audio.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; + frame.audio.channels = hdmi->audio.channels; + + return rk3066_hdmi_upload_frame(hdmi, rc, &frame, + HDMI_INFOFRAME_AAI, 0, 0, 0); +} + static int rk3066_hdmi_config_video_timing(struct rk3066_hdmi *hdmi, struct drm_display_mode *mode) { @@ -364,6 +394,7 @@ static int rk3066_hdmi_setup(struct rk3066_hdmi *hdmi, hdmi_modb(hdmi, HDMI_HDCP_CTRL, HDMI_VIDEO_MODE_MASK, HDMI_VIDEO_MODE_HDMI); rk3066_hdmi_config_avi(hdmi, mode); + rk3066_hdmi_config_audio(hdmi, &hdmi->audio); } else { hdmi_modb(hdmi, HDMI_HDCP_CTRL, HDMI_VIDEO_MODE_MASK, 0); } @@ -380,9 +411,20 @@ static int rk3066_hdmi_setup(struct rk3066_hdmi *hdmi, */ rk3066_hdmi_i2c_init(hdmi); - /* Unmute video output. */ + /* Unmute video and audio output. */ hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, HDMI_VIDEO_AUDIO_DISABLE_MASK, HDMI_AUDIO_DISABLE); + if (hdmi->audio_enable) { + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, HDMI_AUDIO_DISABLE, 0); + /* Reset audio capture logic. */ + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, + HDMI_AUDIO_CP_LOGIC_RESET_MASK, + HDMI_AUDIO_CP_LOGIC_RESET); + usleep_range(900, 1000); + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, + HDMI_AUDIO_CP_LOGIC_RESET_MASK, 0); + } + return 0; } @@ -431,6 +473,7 @@ static void rk3066_hdmi_encoder_disable(struct drm_encoder *encoder, HDMI_AUDIO_CP_LOGIC_RESET); usleep_range(500, 510); } + rk3066_hdmi_set_power_mode(hdmi, HDMI_SYS_POWER_MODE_A); } @@ -534,23 +577,228 @@ struct drm_connector_helper_funcs rk3066_hdmi_connector_helper_funcs = { .best_encoder = rk3066_hdmi_connector_best_encoder, }; -static int -rk3066_hdmi_register(struct drm_device *drm, struct rk3066_hdmi *hdmi) +static int rk3066_hdmi_config_audio(struct rk3066_hdmi *hdmi, struct audio_info *audio) { - struct drm_encoder *encoder = &hdmi->encoder.encoder; - struct device *dev = hdmi->dev; + u32 rate, channel, word_length, N, CTS; + u64 tmp; + + if (audio->channels < 3) + channel = HDMI_AUDIO_I2S_CHANNEL_1_2; + else if (audio->channels < 5) + channel = HDMI_AUDIO_I2S_CHANNEL_3_4; + else if (audio->channels < 7) + channel = HDMI_AUDIO_I2S_CHANNEL_5_6; + else + channel = HDMI_AUDIO_I2S_CHANNEL_7_8; + + switch (audio->sample_rate) { + case 32000: + rate = HDMI_AUDIO_SAMPLE_FRE_32000; + N = N_32K; + break; + case 44100: + rate = HDMI_AUDIO_SAMPLE_FRE_44100; + N = N_441K; + break; + case 48000: + rate = HDMI_AUDIO_SAMPLE_FRE_48000; + N = N_48K; + break; + case 88200: + rate = HDMI_AUDIO_SAMPLE_FRE_88200; + N = N_882K; + break; + case 96000: + rate = HDMI_AUDIO_SAMPLE_FRE_96000; + N = N_96K; + break; + case 176400: + rate = HDMI_AUDIO_SAMPLE_FRE_176400; + N = N_1764K; + break; + case 192000: + rate = HDMI_AUDIO_SAMPLE_FRE_192000; + N = N_192K; + break; + default: + DRM_DEV_ERROR(hdmi->dev, "no support for sample rate %d\n", + audio->sample_rate); + return -ENOENT; + } - encoder->possible_crtcs = - drm_of_find_possible_crtcs(drm, dev->of_node); + switch (audio->sample_width) { + case 16: + word_length = 0x02; + break; + case 20: + word_length = 0x0a; + break; + case 24: + word_length = 0x0b; + break; + default: + DRM_DEV_ERROR(hdmi->dev, "no support for word length %d\n", + audio->sample_width); + return -ENOENT; + } + + tmp = (u64)hdmi->tmdsclk * N; + do_div(tmp, 128 * audio->sample_rate); + CTS = tmp; + + /* Set_audio source I2S. */ + hdmi_writeb(hdmi, HDMI_AUDIO_CTRL1, 0x00); + hdmi_writeb(hdmi, HDMI_AUDIO_CTRL2, 0x40); + hdmi_writeb(hdmi, HDMI_I2S_AUDIO_CTRL, + HDMI_AUDIO_I2S_FORMAT_STANDARD | channel); + hdmi_writeb(hdmi, HDMI_I2S_SWAP, 0x00); + hdmi_modb(hdmi, HDMI_AV_CTRL1, HDMI_AUDIO_SAMPLE_FRE_MASK, rate); + hdmi_writeb(hdmi, HDMI_AUDIO_SRC_NUM_AND_LENGTH, word_length); + + /* Set N value. */ + hdmi_modb(hdmi, HDMI_LR_SWAP_N3, + HDMI_AUDIO_N_19_16_MASK, (N >> 16) & 0x0F); + hdmi_writeb(hdmi, HDMI_N2, (N >> 8) & 0xFF); + hdmi_writeb(hdmi, HDMI_N1, N & 0xFF); + + /* Set CTS value. */ + hdmi_writeb(hdmi, HDMI_CTS_EXT1, CTS & 0xff); + hdmi_writeb(hdmi, HDMI_CTS_EXT2, (CTS >> 8) & 0xff); + hdmi_writeb(hdmi, HDMI_CTS_EXT3, (CTS >> 16) & 0xff); + + if (audio->channels > 2) + hdmi_modb(hdmi, HDMI_LR_SWAP_N3, + HDMI_AUDIO_LR_SWAP_MASK, + HDMI_AUDIO_LR_SWAP_SUBPACKET1); + rate = (~(rate >> 4)) & 0x0f; + hdmi_writeb(hdmi, HDMI_AUDIO_STA_BIT_CTRL1, rate); + hdmi_writeb(hdmi, HDMI_AUDIO_STA_BIT_CTRL2, 0); + + return rk3066_hdmi_config_aai(hdmi, audio); +} + +static int rk3066_hdmi_audio_hw_params(struct device *dev, void *d, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct rk3066_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_display_info *display = &hdmi->connector.display_info; + + if (!display->has_audio) { + DRM_DEV_ERROR(hdmi->dev, "no audio support\n"); + return -ENODEV; + } + + if (!hdmi->encoder.encoder.crtc) + return -ENODEV; + + switch (daifmt->fmt) { + case HDMI_I2S: + break; + default: + DRM_DEV_ERROR(dev, "invalid format %d\n", daifmt->fmt); + return -EINVAL; + } + + hdmi->audio.channels = params->channels; + hdmi->audio.sample_rate = params->sample_rate; + hdmi->audio.sample_width = params->sample_width; + + return rk3066_hdmi_config_audio(hdmi, &hdmi->audio); +} + +static void rk3066_hdmi_audio_shutdown(struct device *dev, void *d) +{ + /* do nothing */ +} + +static int rk3066_hdmi_audio_mute_stream(struct device *dev, void *d, bool mute, int direction) +{ + struct rk3066_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_display_info *display = &hdmi->connector.display_info; + + if (!display->has_audio) { + DRM_DEV_ERROR(hdmi->dev, "no audio support\n"); + return -ENODEV; + } + + hdmi->audio_enable = !mute; + + if (mute) + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, + HDMI_AUDIO_DISABLE, HDMI_AUDIO_DISABLE); + else + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, HDMI_AUDIO_DISABLE, 0); /* - * If we failed to find the CRTC(s) which this encoder is - * supposed to be connected to, it's because the CRTC has - * not been registered yet. Defer probing, and hope that - * the required CRTC is added later. + * Under power mode E we need to reset the audio capture logic to + * make the audio setting update. */ - if (encoder->possible_crtcs == 0) - return -EPROBE_DEFER; + if (rk3066_hdmi_get_power_mode(hdmi) == HDMI_SYS_POWER_MODE_E) { + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, + HDMI_AUDIO_CP_LOGIC_RESET_MASK, + HDMI_AUDIO_CP_LOGIC_RESET); + usleep_range(900, 1000); + hdmi_modb(hdmi, HDMI_VIDEO_CTRL2, + HDMI_AUDIO_CP_LOGIC_RESET_MASK, 0); + } + + return 0; +} + +static int rk3066_hdmi_audio_get_eld(struct device *dev, void *d, u8 *buf, size_t len) +{ + struct rk3066_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_mode_config *config = &hdmi->encoder.encoder.dev->mode_config; + struct drm_connector *connector; + int ret = -ENODEV; + + mutex_lock(&config->mutex); + list_for_each_entry(connector, &config->connector_list, head) { + if (&hdmi->encoder.encoder == connector->encoder) { + memcpy(buf, connector->eld, + min(sizeof(connector->eld), len)); + ret = 0; + } + } + mutex_unlock(&config->mutex); + + return ret; +} + +static const struct hdmi_codec_ops audio_codec_ops = { + .hw_params = rk3066_hdmi_audio_hw_params, + .audio_shutdown = rk3066_hdmi_audio_shutdown, + .mute_stream = rk3066_hdmi_audio_mute_stream, + .get_eld = rk3066_hdmi_audio_get_eld, + .no_capture_mute = 1, +}; + +static int rk3066_hdmi_audio_codec_init(struct rk3066_hdmi *hdmi, struct device *dev) +{ + struct hdmi_codec_pdata codec_data = { + .i2s = 1, + .ops = &audio_codec_ops, + .max_i2s_channels = 8, + }; + + hdmi->audio.channels = 2; + hdmi->audio.sample_rate = 48000; + hdmi->audio.sample_width = 16; + hdmi->audio_enable = false; + hdmi->audio_pdev = + platform_device_register_data(dev, + HDMI_CODEC_DRV_NAME, + PLATFORM_DEVID_NONE, + &codec_data, + sizeof(codec_data)); + + return PTR_ERR_OR_ZERO(hdmi->audio_pdev); +} + +static int rk3066_hdmi_register(struct drm_device *drm, struct rk3066_hdmi *hdmi) +{ + struct drm_encoder *encoder = &hdmi->encoder.encoder; drm_encoder_helper_add(encoder, &rk3066_hdmi_encoder_helper_funcs); drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); @@ -740,6 +988,7 @@ static int rk3066_hdmi_bind(struct device *dev, struct device *master, { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm = data; + struct drm_encoder *encoder; struct rk3066_hdmi *hdmi; int irq; int ret; @@ -748,8 +997,21 @@ static int rk3066_hdmi_bind(struct device *dev, struct device *master, if (!hdmi) return -ENOMEM; + encoder = &hdmi->encoder.encoder; + + encoder->possible_crtcs = + drm_of_find_possible_crtcs(drm, dev->of_node); + + /* + * If we failed to find the CRTC(s) which this encoder is + * supposed to be connected to, it's because the CRTC has + * not been registered yet. Defer probing, and hope that + * the required CRTC is added later. + */ + if (encoder->possible_crtcs == 0) + return -EPROBE_DEFER; + hdmi->dev = dev; - hdmi->drm_dev = drm; hdmi->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(hdmi->regs)) return PTR_ERR(hdmi->regs); @@ -800,6 +1062,8 @@ static int rk3066_hdmi_bind(struct device *dev, struct device *master, if (ret) goto err_disable_i2c; + rk3066_hdmi_audio_codec_init(hdmi, dev); + dev_set_drvdata(dev, hdmi); ret = devm_request_threaded_irq(dev, irq, rk3066_hdmi_hardirq, @@ -813,6 +1077,7 @@ static int rk3066_hdmi_bind(struct device *dev, struct device *master, return 0; err_cleanup_hdmi: + platform_device_unregister(hdmi->audio_pdev); hdmi->connector.funcs->destroy(&hdmi->connector); hdmi->encoder.encoder.funcs->destroy(&hdmi->encoder.encoder); err_disable_i2c: @@ -828,6 +1093,7 @@ static void rk3066_hdmi_unbind(struct device *dev, struct device *master, { struct rk3066_hdmi *hdmi = dev_get_drvdata(dev); + platform_device_unregister(hdmi->audio_pdev); hdmi->connector.funcs->destroy(&hdmi->connector); hdmi->encoder.encoder.funcs->destroy(&hdmi->encoder.encoder);