| Message ID | 1464615097-29446-2-git-send-email-arnaud.pouliquen@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Ack-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> 2016-05-30 15:31 GMT+02:00 Arnaud Pouliquen <arnaud.pouliquen@st.com>: > Add the interface needed by audio hdmi-codec driver. > > Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> > --- > drivers/gpu/drm/sti/Kconfig | 1 + > drivers/gpu/drm/sti/sti_hdmi.c | 294 ++++++++++++++++++++++++++++++++++++++--- > drivers/gpu/drm/sti/sti_hdmi.h | 13 ++ > 3 files changed, 291 insertions(+), 17 deletions(-) > > diff --git a/drivers/gpu/drm/sti/Kconfig b/drivers/gpu/drm/sti/Kconfig > index 5ad43a1..494ab25 100644 > --- a/drivers/gpu/drm/sti/Kconfig > +++ b/drivers/gpu/drm/sti/Kconfig > @@ -7,5 +7,6 @@ config DRM_STI > select DRM_KMS_CMA_HELPER > select DRM_PANEL > select FW_LOADER > + select SND_SOC_HDMI_CODEC if SND_SOC > help > Choose this option to enable DRM on STM stiH41x chipset > diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c > index 6ef0715..f345c2d 100644 > --- a/drivers/gpu/drm/sti/sti_hdmi.c > +++ b/drivers/gpu/drm/sti/sti_hdmi.c > @@ -18,6 +18,8 @@ > #include <drm/drm_crtc_helper.h> > #include <drm/drm_edid.h> > > +#include <sound/hdmi-codec.h> > + > #include "sti_hdmi.h" > #include "sti_hdmi_tx3g4c28phy.h" > #include "sti_hdmi_tx3g0c55phy.h" > @@ -35,6 +37,8 @@ > #define HDMI_DFLT_CHL0_DAT 0x0110 > #define HDMI_DFLT_CHL1_DAT 0x0114 > #define HDMI_DFLT_CHL2_DAT 0x0118 > +#define HDMI_AUDIO_CFG 0x0200 > +#define HDMI_SPDIF_FIFO_STATUS 0x0204 > #define HDMI_SW_DI_1_HEAD_WORD 0x0210 > #define HDMI_SW_DI_1_PKT_WORD0 0x0214 > #define HDMI_SW_DI_1_PKT_WORD1 0x0218 > @@ -44,6 +48,9 @@ > #define HDMI_SW_DI_1_PKT_WORD5 0x0228 > #define HDMI_SW_DI_1_PKT_WORD6 0x022C > #define HDMI_SW_DI_CFG 0x0230 > +#define HDMI_SAMPLE_FLAT_MASK 0x0244 > +#define HDMI_AUDN 0x0400 > +#define HDMI_AUD_CTS 0x0404 > #define HDMI_SW_DI_2_HEAD_WORD 0x0600 > #define HDMI_SW_DI_2_PKT_WORD0 0x0604 > #define HDMI_SW_DI_2_PKT_WORD1 0x0608 > @@ -103,6 +110,7 @@ > #define HDMI_INT_DLL_LCK BIT(5) > #define HDMI_INT_NEW_FRAME BIT(6) > #define HDMI_INT_GENCTRL_PKT BIT(7) > +#define HDMI_INT_AUDIO_FIFO_XRUN BIT(8) > #define HDMI_INT_SINK_TERM_PRESENT BIT(11) > > #define HDMI_DEFAULT_INT (HDMI_INT_SINK_TERM_PRESENT \ > @@ -111,6 +119,7 @@ > | HDMI_INT_GLOBAL) > > #define HDMI_WORKING_INT (HDMI_INT_SINK_TERM_PRESENT \ > + | HDMI_INT_AUDIO_FIFO_XRUN \ > | HDMI_INT_GENCTRL_PKT \ > | HDMI_INT_NEW_FRAME \ > | HDMI_INT_DLL_LCK \ > @@ -121,6 +130,27 @@ > > #define HDMI_STA_SW_RST BIT(1) > > +#define HDMI_AUD_CFG_8CH BIT(0) > +#define HDMI_AUD_CFG_SPDIF_DIV_2 BIT(1) > +#define HDMI_AUD_CFG_SPDIF_DIV_3 BIT(2) > +#define HDMI_AUD_CFG_SPDIF_CLK_DIV_4 (BIT(1) | BIT(2)) > +#define HDMI_AUD_CFG_CTS_CLK_256FS BIT(12) > +#define HDMI_AUD_CFG_DTS_INVALID BIT(16) > +#define HDMI_AUD_CFG_ONE_BIT_INVALID (BIT(18) | BIT(19) | BIT(20) | BIT(21)) > +#define HDMI_AUD_CFG_CH12_VALID BIT(28) > +#define HDMI_AUD_CFG_CH34_VALID BIT(29) > +#define HDMI_AUD_CFG_CH56_VALID BIT(30) > +#define HDMI_AUD_CFG_CH78_VALID BIT(31) > + > +/* sample flat mask */ > +#define HDMI_SAMPLE_FLAT_NO 0 > +#define HDMI_SAMPLE_FLAT_SP0 BIT(0) > +#define HDMI_SAMPLE_FLAT_SP1 BIT(1) > +#define HDMI_SAMPLE_FLAT_SP2 BIT(2) > +#define HDMI_SAMPLE_FLAT_SP3 BIT(3) > +#define HDMI_SAMPLE_FLAT_ALL (HDMI_SAMPLE_FLAT_SP0 | HDMI_SAMPLE_FLAT_SP1 |\ > + HDMI_SAMPLE_FLAT_SP2 | HDMI_SAMPLE_FLAT_SP3) > + > #define HDMI_INFOFRAME_HEADER_TYPE(x) (((x) & 0xff) << 0) > #define HDMI_INFOFRAME_HEADER_VERSION(x) (((x) & 0xff) << 8) > #define HDMI_INFOFRAME_HEADER_LEN(x) (((x) & 0x0f) << 16) > @@ -171,6 +201,10 @@ static irqreturn_t hdmi_irq_thread(int irq, void *arg) > wake_up_interruptible(&hdmi->wait_event); > } > > + /* Audio FIFO underrun IRQ */ > + if (hdmi->irq_status & HDMI_INT_AUDIO_FIFO_XRUN) > + DRM_INFO("Warning: audio FIFO underrun occurs!"); > + > return IRQ_HANDLED; > } > > @@ -441,26 +475,29 @@ static int hdmi_avi_infoframe_config(struct sti_hdmi *hdmi) > */ > static int hdmi_audio_infoframe_config(struct sti_hdmi *hdmi) > { > - struct hdmi_audio_infoframe infofame; > + struct hdmi_audio_params *audio = &hdmi->audio; > u8 buffer[HDMI_INFOFRAME_SIZE(AUDIO)]; > - int ret; > - > - ret = hdmi_audio_infoframe_init(&infofame); > - if (ret < 0) { > - DRM_ERROR("failed to setup audio infoframe: %d\n", ret); > - return ret; > - } > - > - infofame.channels = 2; > - > - ret = hdmi_audio_infoframe_pack(&infofame, buffer, sizeof(buffer)); > - if (ret < 0) { > - DRM_ERROR("failed to pack audio infoframe: %d\n", ret); > - return ret; > + int ret, val; > + > + DRM_DEBUG_DRIVER("enter %s, AIF %s\n", __func__, > + audio->enabled ? "enable" : "disable"); > + if (audio->enabled) { > + /* set audio parameters stored*/ > + ret = hdmi_audio_infoframe_pack(&audio->cea, buffer, > + sizeof(buffer)); > + if (ret < 0) { > + DRM_ERROR("failed to pack audio infoframe: %d\n", ret); > + return ret; > + } > + hdmi_infoframe_write_infopack(hdmi, buffer, ret); > + } else { > + /*disable audio info frame transmission */ > + val = hdmi_read(hdmi, HDMI_SW_DI_CFG); > + val &= ~HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, > + HDMI_IFRAME_SLOT_AUDIO); > + hdmi_write(hdmi, val, HDMI_SW_DI_CFG); > } > > - hdmi_infoframe_write_infopack(hdmi, buffer, ret); > - > return 0; > } > > @@ -656,6 +693,10 @@ static int hdmi_dbg_show(struct seq_file *s, void *data) > DBGFS_DUMP("", HDMI_SW_DI_CFG); > hdmi_dbg_sw_di_cfg(s, hdmi_read(hdmi, HDMI_SW_DI_CFG)); > > + DBGFS_DUMP("\n", HDMI_AUDIO_CFG); > + DBGFS_DUMP("\n", HDMI_SPDIF_FIFO_STATUS); > + DBGFS_DUMP("\n", HDMI_AUDN); > + > seq_printf(s, "\n AVI Infoframe (Data Island slot N=%d):", > HDMI_IFRAME_SLOT_AVI); > DBGFS_DUMP_DI(HDMI_SW_DI_N_HEAD_WORD, HDMI_IFRAME_SLOT_AVI); > @@ -861,6 +902,7 @@ static int sti_hdmi_connector_get_modes(struct drm_connector *connector) > > count = drm_add_edid_modes(connector, edid); > drm_mode_connector_update_edid_property(connector, edid); > + drm_edid_to_eld(connector, edid); > > kfree(edid); > return count; > @@ -1049,6 +1091,206 @@ static struct drm_encoder *sti_hdmi_find_encoder(struct drm_device *dev) > return NULL; > } > > +/** > + * sti_hdmi_audio_get_non_coherent_n() - get N parameter for non-coherent > + * clocks. None-coherent clocks means that audio and TMDS clocks have not the > + * same source (drifts between clocks). In this case assumption is that CTS is > + * automatically calculated by hardware. > + * > + * @audio_fs: audio frame clock frequency in Hz > + * > + * Values computed are based on table described in HDMI specification 1.4b > + * > + * Returns n value. > + */ > +static int sti_hdmi_audio_get_non_coherent_n(unsigned int audio_fs) > +{ > + unsigned int n; > + > + switch (audio_fs) { > + case 32000: > + n = 4096; > + break; > + case 44100: > + n = 6272; > + break; > + case 48000: > + n = 6144; > + break; > + case 88200: > + n = 6272 * 2; > + break; > + case 96000: > + n = 6144 * 2; > + break; > + case 176400: > + n = 6272 * 4; > + break; > + case 192000: > + n = 6144 * 4; > + break; > + default: > + /* Not pre-defined, recommended value: 128 * fs / 1000 */ > + n = (audio_fs * 128) / 1000; > + } > + > + return n; > +} > + > +static int hdmi_audio_configure(struct sti_hdmi *hdmi, > + struct hdmi_audio_params *params) > +{ > + int audio_cfg, n; > + struct hdmi_audio_infoframe *info = ¶ms->cea; > + > + DRM_DEBUG_DRIVER("\n"); > + > + if (!hdmi->enabled) > + return 0; > + > + /* update N parameter */ > + n = sti_hdmi_audio_get_non_coherent_n(params->sample_rate); > + > + DRM_DEBUG_DRIVER("Audio rate = %d Hz, TMDS clock = %d Hz, n = %d\n", > + params->sample_rate, hdmi->mode.clock * 1000, n); > + hdmi_write(hdmi, n, HDMI_AUDN); > + > + /* update HDMI registers according to configuration */ > + audio_cfg = HDMI_AUD_CFG_SPDIF_DIV_2 | HDMI_AUD_CFG_DTS_INVALID | > + HDMI_AUD_CFG_ONE_BIT_INVALID; > + > + switch (info->channels) { > + case 8: > + audio_cfg |= HDMI_AUD_CFG_CH78_VALID; > + case 6: > + audio_cfg |= HDMI_AUD_CFG_CH56_VALID; > + case 4: > + audio_cfg |= HDMI_AUD_CFG_CH34_VALID | HDMI_AUD_CFG_8CH; > + case 2: > + audio_cfg |= HDMI_AUD_CFG_CH12_VALID; > + break; > + default: > + DRM_ERROR("ERROR: Unsupported number of channels (%d)!\n", > + info->channels); > + return -EINVAL; > + } > + > + hdmi_write(hdmi, audio_cfg, HDMI_AUDIO_CFG); > + > + hdmi->audio = *params; > + > + return hdmi_audio_infoframe_config(hdmi); > +} > + > +static void hdmi_audio_shutdown(struct device *dev) > +{ > + struct sti_hdmi *hdmi = dev_get_drvdata(dev); > + int audio_cfg; > + > + DRM_DEBUG_DRIVER("\n"); > + > + /* disable audio */ > + audio_cfg = HDMI_AUD_CFG_SPDIF_DIV_2 | HDMI_AUD_CFG_DTS_INVALID | > + HDMI_AUD_CFG_ONE_BIT_INVALID; > + hdmi_write(hdmi, audio_cfg, HDMI_AUDIO_CFG); > + > + hdmi->audio.enabled = 0; > + hdmi_audio_infoframe_config(hdmi); > +} > + > +static int hdmi_audio_hw_params(struct device *dev, > + struct hdmi_codec_daifmt *daifmt, > + struct hdmi_codec_params *params) > +{ > + struct sti_hdmi *hdmi = dev_get_drvdata(dev); > + int ret; > + struct hdmi_audio_params audio = { > + .sample_width = params->sample_width, > + .sample_rate = params->sample_rate, > + .cea = params->cea, > + }; > + > + DRM_DEBUG_DRIVER("\n"); > + > + if (!hdmi->enabled) > + return 0; > + > + if ((daifmt->fmt != HDMI_I2S) || daifmt->bit_clk_inv || > + daifmt->frame_clk_inv || daifmt->bit_clk_master || > + daifmt->frame_clk_master) { > + dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__, > + daifmt->bit_clk_inv, daifmt->frame_clk_inv, > + daifmt->bit_clk_master, > + daifmt->frame_clk_master); > + return -EINVAL; > + } > + > + audio.enabled = 1; > + > + ret = hdmi_audio_configure(hdmi, &audio); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int hdmi_audio_digital_mute(struct device *dev, bool enable) > +{ > + struct sti_hdmi *hdmi = dev_get_drvdata(dev); > + > + DRM_DEBUG_DRIVER("%s\n", enable ? "enable" : "disable"); > + > + if (enable) > + hdmi_write(hdmi, HDMI_SAMPLE_FLAT_ALL, HDMI_SAMPLE_FLAT_MASK); > + else > + hdmi_write(hdmi, HDMI_SAMPLE_FLAT_NO, HDMI_SAMPLE_FLAT_MASK); > + > + return 0; > +} > + > +static int hdmi_audio_get_eld(struct device *dev, uint8_t *buf, size_t len) > +{ > + struct sti_hdmi *hdmi = dev_get_drvdata(dev); > + struct drm_connector *connector = hdmi->drm_connector; > + > + DRM_DEBUG_DRIVER("\n"); > + memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); > + > + return 0; > +} > + > +static const struct hdmi_codec_ops audio_codec_ops = { > + .hw_params = hdmi_audio_hw_params, > + .audio_shutdown = hdmi_audio_shutdown, > + .digital_mute = hdmi_audio_digital_mute, > + .get_eld = hdmi_audio_get_eld, > +}; > + > +static int sti_hdmi_register_audio_driver(struct device *dev, > + struct sti_hdmi *hdmi) > +{ > + struct hdmi_codec_pdata codec_data = { > + .ops = &audio_codec_ops, > + .max_i2s_channels = 8, > + .i2s = 1, > + }; > + > + DRM_DEBUG_DRIVER("\n"); > + > + hdmi->audio.enabled = 0; > + > + hdmi->audio_pdev = platform_device_register_data( > + dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, > + &codec_data, sizeof(codec_data)); > + > + if (IS_ERR(hdmi->audio_pdev)) > + return PTR_ERR(hdmi->audio_pdev); > + > + DRM_INFO("%s Driver bound %s\n", HDMI_CODEC_DRV_NAME, dev_name(dev)); > + > + return 0; > +} > + > static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) > { > struct sti_hdmi *hdmi = dev_get_drvdata(dev); > @@ -1099,12 +1341,27 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) > if (err) > goto err_connector; > > + hdmi->drm_connector = drm_connector; > + > err = drm_mode_connector_attach_encoder(drm_connector, encoder); > if (err) { > DRM_ERROR("Failed to attach a connector to a encoder\n"); > goto err_sysfs; > } > > + err = sti_hdmi_register_audio_driver(dev, hdmi); > + if (err) { > + DRM_ERROR("Failed to attach an audio codec\n"); > + goto err_sysfs; > + } > + > + /* Initialize audio infoframe */ > + err = hdmi_audio_infoframe_init(&hdmi->audio.cea); > + if (err) { > + DRM_ERROR("Failed to init audio infoframe\n"); > + goto err_sysfs; > + } > + > /* Enable default interrupts */ > hdmi_write(hdmi, HDMI_DEFAULT_INT, HDMI_INT_EN); > > @@ -1115,6 +1372,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) > > err_sysfs: > drm_connector_unregister(drm_connector); > + hdmi->drm_connector = NULL; > err_connector: > drm_connector_cleanup(drm_connector); > > @@ -1267,6 +1525,8 @@ static int sti_hdmi_remove(struct platform_device *pdev) > struct sti_hdmi *hdmi = dev_get_drvdata(&pdev->dev); > > i2c_put_adapter(hdmi->ddc_adapt); > + if (hdmi->audio_pdev) > + platform_device_unregister(hdmi->audio_pdev); > component_del(&pdev->dev, &sti_hdmi_ops); > > return 0; > diff --git a/drivers/gpu/drm/sti/sti_hdmi.h b/drivers/gpu/drm/sti/sti_hdmi.h > index ef3a945..119bc35 100644 > --- a/drivers/gpu/drm/sti/sti_hdmi.h > +++ b/drivers/gpu/drm/sti/sti_hdmi.h > @@ -23,6 +23,13 @@ struct hdmi_phy_ops { > void (*stop)(struct sti_hdmi *hdmi); > }; > > +struct hdmi_audio_params { > + bool enabled; > + unsigned int sample_width; > + unsigned int sample_rate; > + struct hdmi_audio_infoframe cea; > +}; > + > /* values for the framing mode property */ > enum sti_hdmi_modes { > HDMI_MODE_HDMI, > @@ -67,6 +74,9 @@ static const struct drm_prop_enum_list colorspace_mode_names[] = { > * @ddc_adapt: i2c ddc adapter > * @colorspace: current colorspace selected > * @hdmi_mode: select framing for HDMI or DVI > + * @audio_pdev: ASoC hdmi-codec platform device > + * @audio: hdmi audio parameters. > + * @drm_connector: hdmi connector > */ > struct sti_hdmi { > struct device dev; > @@ -89,6 +99,9 @@ struct sti_hdmi { > struct i2c_adapter *ddc_adapt; > enum hdmi_colorspace colorspace; > enum sti_hdmi_modes hdmi_mode; > + struct platform_device *audio_pdev; > + struct hdmi_audio_params audio; > + struct drm_connector *drm_connector; > }; > > u32 hdmi_read(struct sti_hdmi *hdmi, int offset); > -- > 1.9.1 >
diff --git a/drivers/gpu/drm/sti/Kconfig b/drivers/gpu/drm/sti/Kconfig index 5ad43a1..494ab25 100644 --- a/drivers/gpu/drm/sti/Kconfig +++ b/drivers/gpu/drm/sti/Kconfig @@ -7,5 +7,6 @@ config DRM_STI select DRM_KMS_CMA_HELPER select DRM_PANEL select FW_LOADER + select SND_SOC_HDMI_CODEC if SND_SOC help Choose this option to enable DRM on STM stiH41x chipset diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 6ef0715..f345c2d 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -18,6 +18,8 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_edid.h> +#include <sound/hdmi-codec.h> + #include "sti_hdmi.h" #include "sti_hdmi_tx3g4c28phy.h" #include "sti_hdmi_tx3g0c55phy.h" @@ -35,6 +37,8 @@ #define HDMI_DFLT_CHL0_DAT 0x0110 #define HDMI_DFLT_CHL1_DAT 0x0114 #define HDMI_DFLT_CHL2_DAT 0x0118 +#define HDMI_AUDIO_CFG 0x0200 +#define HDMI_SPDIF_FIFO_STATUS 0x0204 #define HDMI_SW_DI_1_HEAD_WORD 0x0210 #define HDMI_SW_DI_1_PKT_WORD0 0x0214 #define HDMI_SW_DI_1_PKT_WORD1 0x0218 @@ -44,6 +48,9 @@ #define HDMI_SW_DI_1_PKT_WORD5 0x0228 #define HDMI_SW_DI_1_PKT_WORD6 0x022C #define HDMI_SW_DI_CFG 0x0230 +#define HDMI_SAMPLE_FLAT_MASK 0x0244 +#define HDMI_AUDN 0x0400 +#define HDMI_AUD_CTS 0x0404 #define HDMI_SW_DI_2_HEAD_WORD 0x0600 #define HDMI_SW_DI_2_PKT_WORD0 0x0604 #define HDMI_SW_DI_2_PKT_WORD1 0x0608 @@ -103,6 +110,7 @@ #define HDMI_INT_DLL_LCK BIT(5) #define HDMI_INT_NEW_FRAME BIT(6) #define HDMI_INT_GENCTRL_PKT BIT(7) +#define HDMI_INT_AUDIO_FIFO_XRUN BIT(8) #define HDMI_INT_SINK_TERM_PRESENT BIT(11) #define HDMI_DEFAULT_INT (HDMI_INT_SINK_TERM_PRESENT \ @@ -111,6 +119,7 @@ | HDMI_INT_GLOBAL) #define HDMI_WORKING_INT (HDMI_INT_SINK_TERM_PRESENT \ + | HDMI_INT_AUDIO_FIFO_XRUN \ | HDMI_INT_GENCTRL_PKT \ | HDMI_INT_NEW_FRAME \ | HDMI_INT_DLL_LCK \ @@ -121,6 +130,27 @@ #define HDMI_STA_SW_RST BIT(1) +#define HDMI_AUD_CFG_8CH BIT(0) +#define HDMI_AUD_CFG_SPDIF_DIV_2 BIT(1) +#define HDMI_AUD_CFG_SPDIF_DIV_3 BIT(2) +#define HDMI_AUD_CFG_SPDIF_CLK_DIV_4 (BIT(1) | BIT(2)) +#define HDMI_AUD_CFG_CTS_CLK_256FS BIT(12) +#define HDMI_AUD_CFG_DTS_INVALID BIT(16) +#define HDMI_AUD_CFG_ONE_BIT_INVALID (BIT(18) | BIT(19) | BIT(20) | BIT(21)) +#define HDMI_AUD_CFG_CH12_VALID BIT(28) +#define HDMI_AUD_CFG_CH34_VALID BIT(29) +#define HDMI_AUD_CFG_CH56_VALID BIT(30) +#define HDMI_AUD_CFG_CH78_VALID BIT(31) + +/* sample flat mask */ +#define HDMI_SAMPLE_FLAT_NO 0 +#define HDMI_SAMPLE_FLAT_SP0 BIT(0) +#define HDMI_SAMPLE_FLAT_SP1 BIT(1) +#define HDMI_SAMPLE_FLAT_SP2 BIT(2) +#define HDMI_SAMPLE_FLAT_SP3 BIT(3) +#define HDMI_SAMPLE_FLAT_ALL (HDMI_SAMPLE_FLAT_SP0 | HDMI_SAMPLE_FLAT_SP1 |\ + HDMI_SAMPLE_FLAT_SP2 | HDMI_SAMPLE_FLAT_SP3) + #define HDMI_INFOFRAME_HEADER_TYPE(x) (((x) & 0xff) << 0) #define HDMI_INFOFRAME_HEADER_VERSION(x) (((x) & 0xff) << 8) #define HDMI_INFOFRAME_HEADER_LEN(x) (((x) & 0x0f) << 16) @@ -171,6 +201,10 @@ static irqreturn_t hdmi_irq_thread(int irq, void *arg) wake_up_interruptible(&hdmi->wait_event); } + /* Audio FIFO underrun IRQ */ + if (hdmi->irq_status & HDMI_INT_AUDIO_FIFO_XRUN) + DRM_INFO("Warning: audio FIFO underrun occurs!"); + return IRQ_HANDLED; } @@ -441,26 +475,29 @@ static int hdmi_avi_infoframe_config(struct sti_hdmi *hdmi) */ static int hdmi_audio_infoframe_config(struct sti_hdmi *hdmi) { - struct hdmi_audio_infoframe infofame; + struct hdmi_audio_params *audio = &hdmi->audio; u8 buffer[HDMI_INFOFRAME_SIZE(AUDIO)]; - int ret; - - ret = hdmi_audio_infoframe_init(&infofame); - if (ret < 0) { - DRM_ERROR("failed to setup audio infoframe: %d\n", ret); - return ret; - } - - infofame.channels = 2; - - ret = hdmi_audio_infoframe_pack(&infofame, buffer, sizeof(buffer)); - if (ret < 0) { - DRM_ERROR("failed to pack audio infoframe: %d\n", ret); - return ret; + int ret, val; + + DRM_DEBUG_DRIVER("enter %s, AIF %s\n", __func__, + audio->enabled ? "enable" : "disable"); + if (audio->enabled) { + /* set audio parameters stored*/ + ret = hdmi_audio_infoframe_pack(&audio->cea, buffer, + sizeof(buffer)); + if (ret < 0) { + DRM_ERROR("failed to pack audio infoframe: %d\n", ret); + return ret; + } + hdmi_infoframe_write_infopack(hdmi, buffer, ret); + } else { + /*disable audio info frame transmission */ + val = hdmi_read(hdmi, HDMI_SW_DI_CFG); + val &= ~HDMI_IFRAME_CFG_DI_N(HDMI_IFRAME_MASK, + HDMI_IFRAME_SLOT_AUDIO); + hdmi_write(hdmi, val, HDMI_SW_DI_CFG); } - hdmi_infoframe_write_infopack(hdmi, buffer, ret); - return 0; } @@ -656,6 +693,10 @@ static int hdmi_dbg_show(struct seq_file *s, void *data) DBGFS_DUMP("", HDMI_SW_DI_CFG); hdmi_dbg_sw_di_cfg(s, hdmi_read(hdmi, HDMI_SW_DI_CFG)); + DBGFS_DUMP("\n", HDMI_AUDIO_CFG); + DBGFS_DUMP("\n", HDMI_SPDIF_FIFO_STATUS); + DBGFS_DUMP("\n", HDMI_AUDN); + seq_printf(s, "\n AVI Infoframe (Data Island slot N=%d):", HDMI_IFRAME_SLOT_AVI); DBGFS_DUMP_DI(HDMI_SW_DI_N_HEAD_WORD, HDMI_IFRAME_SLOT_AVI); @@ -861,6 +902,7 @@ static int sti_hdmi_connector_get_modes(struct drm_connector *connector) count = drm_add_edid_modes(connector, edid); drm_mode_connector_update_edid_property(connector, edid); + drm_edid_to_eld(connector, edid); kfree(edid); return count; @@ -1049,6 +1091,206 @@ static struct drm_encoder *sti_hdmi_find_encoder(struct drm_device *dev) return NULL; } +/** + * sti_hdmi_audio_get_non_coherent_n() - get N parameter for non-coherent + * clocks. None-coherent clocks means that audio and TMDS clocks have not the + * same source (drifts between clocks). In this case assumption is that CTS is + * automatically calculated by hardware. + * + * @audio_fs: audio frame clock frequency in Hz + * + * Values computed are based on table described in HDMI specification 1.4b + * + * Returns n value. + */ +static int sti_hdmi_audio_get_non_coherent_n(unsigned int audio_fs) +{ + unsigned int n; + + switch (audio_fs) { + case 32000: + n = 4096; + break; + case 44100: + n = 6272; + break; + case 48000: + n = 6144; + break; + case 88200: + n = 6272 * 2; + break; + case 96000: + n = 6144 * 2; + break; + case 176400: + n = 6272 * 4; + break; + case 192000: + n = 6144 * 4; + break; + default: + /* Not pre-defined, recommended value: 128 * fs / 1000 */ + n = (audio_fs * 128) / 1000; + } + + return n; +} + +static int hdmi_audio_configure(struct sti_hdmi *hdmi, + struct hdmi_audio_params *params) +{ + int audio_cfg, n; + struct hdmi_audio_infoframe *info = ¶ms->cea; + + DRM_DEBUG_DRIVER("\n"); + + if (!hdmi->enabled) + return 0; + + /* update N parameter */ + n = sti_hdmi_audio_get_non_coherent_n(params->sample_rate); + + DRM_DEBUG_DRIVER("Audio rate = %d Hz, TMDS clock = %d Hz, n = %d\n", + params->sample_rate, hdmi->mode.clock * 1000, n); + hdmi_write(hdmi, n, HDMI_AUDN); + + /* update HDMI registers according to configuration */ + audio_cfg = HDMI_AUD_CFG_SPDIF_DIV_2 | HDMI_AUD_CFG_DTS_INVALID | + HDMI_AUD_CFG_ONE_BIT_INVALID; + + switch (info->channels) { + case 8: + audio_cfg |= HDMI_AUD_CFG_CH78_VALID; + case 6: + audio_cfg |= HDMI_AUD_CFG_CH56_VALID; + case 4: + audio_cfg |= HDMI_AUD_CFG_CH34_VALID | HDMI_AUD_CFG_8CH; + case 2: + audio_cfg |= HDMI_AUD_CFG_CH12_VALID; + break; + default: + DRM_ERROR("ERROR: Unsupported number of channels (%d)!\n", + info->channels); + return -EINVAL; + } + + hdmi_write(hdmi, audio_cfg, HDMI_AUDIO_CFG); + + hdmi->audio = *params; + + return hdmi_audio_infoframe_config(hdmi); +} + +static void hdmi_audio_shutdown(struct device *dev) +{ + struct sti_hdmi *hdmi = dev_get_drvdata(dev); + int audio_cfg; + + DRM_DEBUG_DRIVER("\n"); + + /* disable audio */ + audio_cfg = HDMI_AUD_CFG_SPDIF_DIV_2 | HDMI_AUD_CFG_DTS_INVALID | + HDMI_AUD_CFG_ONE_BIT_INVALID; + hdmi_write(hdmi, audio_cfg, HDMI_AUDIO_CFG); + + hdmi->audio.enabled = 0; + hdmi_audio_infoframe_config(hdmi); +} + +static int hdmi_audio_hw_params(struct device *dev, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct sti_hdmi *hdmi = dev_get_drvdata(dev); + int ret; + struct hdmi_audio_params audio = { + .sample_width = params->sample_width, + .sample_rate = params->sample_rate, + .cea = params->cea, + }; + + DRM_DEBUG_DRIVER("\n"); + + if (!hdmi->enabled) + return 0; + + if ((daifmt->fmt != HDMI_I2S) || daifmt->bit_clk_inv || + daifmt->frame_clk_inv || daifmt->bit_clk_master || + daifmt->frame_clk_master) { + dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__, + daifmt->bit_clk_inv, daifmt->frame_clk_inv, + daifmt->bit_clk_master, + daifmt->frame_clk_master); + return -EINVAL; + } + + audio.enabled = 1; + + ret = hdmi_audio_configure(hdmi, &audio); + if (ret < 0) + return ret; + + return 0; +} + +static int hdmi_audio_digital_mute(struct device *dev, bool enable) +{ + struct sti_hdmi *hdmi = dev_get_drvdata(dev); + + DRM_DEBUG_DRIVER("%s\n", enable ? "enable" : "disable"); + + if (enable) + hdmi_write(hdmi, HDMI_SAMPLE_FLAT_ALL, HDMI_SAMPLE_FLAT_MASK); + else + hdmi_write(hdmi, HDMI_SAMPLE_FLAT_NO, HDMI_SAMPLE_FLAT_MASK); + + return 0; +} + +static int hdmi_audio_get_eld(struct device *dev, uint8_t *buf, size_t len) +{ + struct sti_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_connector *connector = hdmi->drm_connector; + + DRM_DEBUG_DRIVER("\n"); + memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); + + return 0; +} + +static const struct hdmi_codec_ops audio_codec_ops = { + .hw_params = hdmi_audio_hw_params, + .audio_shutdown = hdmi_audio_shutdown, + .digital_mute = hdmi_audio_digital_mute, + .get_eld = hdmi_audio_get_eld, +}; + +static int sti_hdmi_register_audio_driver(struct device *dev, + struct sti_hdmi *hdmi) +{ + struct hdmi_codec_pdata codec_data = { + .ops = &audio_codec_ops, + .max_i2s_channels = 8, + .i2s = 1, + }; + + DRM_DEBUG_DRIVER("\n"); + + hdmi->audio.enabled = 0; + + hdmi->audio_pdev = platform_device_register_data( + dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, + &codec_data, sizeof(codec_data)); + + if (IS_ERR(hdmi->audio_pdev)) + return PTR_ERR(hdmi->audio_pdev); + + DRM_INFO("%s Driver bound %s\n", HDMI_CODEC_DRV_NAME, dev_name(dev)); + + return 0; +} + static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) { struct sti_hdmi *hdmi = dev_get_drvdata(dev); @@ -1099,12 +1341,27 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) if (err) goto err_connector; + hdmi->drm_connector = drm_connector; + err = drm_mode_connector_attach_encoder(drm_connector, encoder); if (err) { DRM_ERROR("Failed to attach a connector to a encoder\n"); goto err_sysfs; } + err = sti_hdmi_register_audio_driver(dev, hdmi); + if (err) { + DRM_ERROR("Failed to attach an audio codec\n"); + goto err_sysfs; + } + + /* Initialize audio infoframe */ + err = hdmi_audio_infoframe_init(&hdmi->audio.cea); + if (err) { + DRM_ERROR("Failed to init audio infoframe\n"); + goto err_sysfs; + } + /* Enable default interrupts */ hdmi_write(hdmi, HDMI_DEFAULT_INT, HDMI_INT_EN); @@ -1115,6 +1372,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) err_sysfs: drm_connector_unregister(drm_connector); + hdmi->drm_connector = NULL; err_connector: drm_connector_cleanup(drm_connector); @@ -1267,6 +1525,8 @@ static int sti_hdmi_remove(struct platform_device *pdev) struct sti_hdmi *hdmi = dev_get_drvdata(&pdev->dev); i2c_put_adapter(hdmi->ddc_adapt); + if (hdmi->audio_pdev) + platform_device_unregister(hdmi->audio_pdev); component_del(&pdev->dev, &sti_hdmi_ops); return 0; diff --git a/drivers/gpu/drm/sti/sti_hdmi.h b/drivers/gpu/drm/sti/sti_hdmi.h index ef3a945..119bc35 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.h +++ b/drivers/gpu/drm/sti/sti_hdmi.h @@ -23,6 +23,13 @@ struct hdmi_phy_ops { void (*stop)(struct sti_hdmi *hdmi); }; +struct hdmi_audio_params { + bool enabled; + unsigned int sample_width; + unsigned int sample_rate; + struct hdmi_audio_infoframe cea; +}; + /* values for the framing mode property */ enum sti_hdmi_modes { HDMI_MODE_HDMI, @@ -67,6 +74,9 @@ static const struct drm_prop_enum_list colorspace_mode_names[] = { * @ddc_adapt: i2c ddc adapter * @colorspace: current colorspace selected * @hdmi_mode: select framing for HDMI or DVI + * @audio_pdev: ASoC hdmi-codec platform device + * @audio: hdmi audio parameters. + * @drm_connector: hdmi connector */ struct sti_hdmi { struct device dev; @@ -89,6 +99,9 @@ struct sti_hdmi { struct i2c_adapter *ddc_adapt; enum hdmi_colorspace colorspace; enum sti_hdmi_modes hdmi_mode; + struct platform_device *audio_pdev; + struct hdmi_audio_params audio; + struct drm_connector *drm_connector; }; u32 hdmi_read(struct sti_hdmi *hdmi, int offset);
Add the interface needed by audio hdmi-codec driver. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> --- drivers/gpu/drm/sti/Kconfig | 1 + drivers/gpu/drm/sti/sti_hdmi.c | 294 ++++++++++++++++++++++++++++++++++++++--- drivers/gpu/drm/sti/sti_hdmi.h | 13 ++ 3 files changed, 291 insertions(+), 17 deletions(-)