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-rw-r--r--drivers/gpu/drm/exynos/Kconfig1
-rw-r--r--drivers/gpu/drm/exynos/exynos_hdmi.c250
-rw-r--r--drivers/gpu/drm/exynos/regs-hdmi.h8
3 files changed, 194 insertions, 65 deletions
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
index 305dc3d4ff77..5a7c9d8abd6b 100644
--- a/drivers/gpu/drm/exynos/Kconfig
+++ b/drivers/gpu/drm/exynos/Kconfig
@@ -3,6 +3,7 @@ config DRM_EXYNOS
depends on OF && DRM && (ARCH_S3C64XX || ARCH_EXYNOS || ARCH_MULTIPLATFORM)
select DRM_KMS_HELPER
select VIDEOMODE_HELPERS
+ select SND_SOC_HDMI_CODEC if SND_SOC
help
Choose this option if you have a Samsung SoC EXYNOS chipset.
If M is selected the module will be called exynosdrm.
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 1309b1c9e074..82d1b7e2febe 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -40,7 +40,7 @@
#include <linux/component.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
-
+#include <sound/hdmi-codec.h>
#include <drm/exynos_drm.h>
#include <media/cec-notifier.h>
@@ -111,12 +111,18 @@ struct hdmi_driver_data {
struct string_array_spec clk_muxes;
};
+struct hdmi_audio {
+ struct platform_device *pdev;
+ struct hdmi_audio_infoframe infoframe;
+ struct hdmi_codec_params params;
+ bool mute;
+};
+
struct hdmi_context {
struct drm_encoder encoder;
struct device *dev;
struct drm_device *drm_dev;
struct drm_connector connector;
- bool powered;
bool dvi_mode;
struct delayed_work hotplug_work;
struct cec_notifier *notifier;
@@ -136,6 +142,11 @@ struct hdmi_context {
struct regulator *reg_hdmi_en;
struct exynos_drm_clk phy_clk;
struct drm_bridge *bridge;
+
+ /* mutex protecting subsequent fields below */
+ struct mutex mutex;
+ struct hdmi_audio audio;
+ bool powered;
};
static inline struct hdmi_context *encoder_to_hdmi(struct drm_encoder *e)
@@ -776,6 +787,22 @@ static int hdmi_clk_set_parents(struct hdmi_context *hdata, bool to_phy)
return ret;
}
+static int hdmi_audio_infoframe_apply(struct hdmi_context *hdata)
+{
+ struct hdmi_audio_infoframe *infoframe = &hdata->audio.infoframe;
+ u8 buf[HDMI_INFOFRAME_SIZE(AUDIO)];
+ int len;
+
+ len = hdmi_audio_infoframe_pack(infoframe, buf, sizeof(buf));
+ if (len < 0)
+ return len;
+
+ hdmi_reg_writeb(hdata, HDMI_AUI_CON, HDMI_AUI_CON_EVERY_VSYNC);
+ hdmi_reg_write_buf(hdata, HDMI_AUI_HEADER0, buf, len);
+
+ return 0;
+}
+
static void hdmi_reg_infoframes(struct hdmi_context *hdata)
{
struct drm_display_mode *m = &hdata->encoder.crtc->state->mode;
@@ -812,15 +839,7 @@ static void hdmi_reg_infoframes(struct hdmi_context *hdata)
hdmi_reg_write_buf(hdata, HDMI_VSI_DATA(0), buf + 3, ret - 3);
}
- ret = hdmi_audio_infoframe_init(&frm.audio);
- if (!ret) {
- frm.audio.channels = 2;
- ret = hdmi_audio_infoframe_pack(&frm.audio, buf, sizeof(buf));
- }
- if (ret > 0) {
- hdmi_reg_writeb(hdata, HDMI_AUI_CON, HDMI_AUI_CON_EVERY_VSYNC);
- hdmi_reg_write_buf(hdata, HDMI_AUI_HEADER0, buf, ret);
- }
+ hdmi_audio_infoframe_apply(hdata);
}
static enum drm_connector_status hdmi_detect(struct drm_connector *connector,
@@ -1010,23 +1029,18 @@ static void hdmi_reg_acr(struct hdmi_context *hdata, u32 freq)
hdmi_reg_writeb(hdata, HDMI_ACR_CON, 4);
}
-static void hdmi_audio_init(struct hdmi_context *hdata)
+static void hdmi_audio_config(struct hdmi_context *hdata)
{
- u32 sample_rate, bits_per_sample;
- u32 data_num, bit_ch, sample_frq;
- u32 val;
-
- sample_rate = 44100;
- bits_per_sample = 16;
+ u32 bit_ch = 1;
+ u32 data_num, val;
+ int i;
- switch (bits_per_sample) {
+ switch (hdata->audio.params.sample_width) {
case 20:
data_num = 2;
- bit_ch = 1;
break;
case 24:
data_num = 3;
- bit_ch = 1;
break;
default:
data_num = 1;
@@ -1034,7 +1048,7 @@ static void hdmi_audio_init(struct hdmi_context *hdata)
break;
}
- hdmi_reg_acr(hdata, sample_rate);
+ hdmi_reg_acr(hdata, hdata->audio.params.sample_rate);
hdmi_reg_writeb(hdata, HDMI_I2S_MUX_CON, HDMI_I2S_IN_DISABLE
| HDMI_I2S_AUD_I2S | HDMI_I2S_CUV_I2S_ENABLE
@@ -1044,12 +1058,6 @@ static void hdmi_audio_init(struct hdmi_context *hdata)
| HDMI_I2S_CH1_EN | HDMI_I2S_CH2_EN);
hdmi_reg_writeb(hdata, HDMI_I2S_MUX_CUV, HDMI_I2S_CUV_RL_EN);
-
- sample_frq = (sample_rate == 44100) ? 0 :
- (sample_rate == 48000) ? 2 :
- (sample_rate == 32000) ? 3 :
- (sample_rate == 96000) ? 0xa : 0x0;
-
hdmi_reg_writeb(hdata, HDMI_I2S_CLK_CON, HDMI_I2S_CLK_DIS);
hdmi_reg_writeb(hdata, HDMI_I2S_CLK_CON, HDMI_I2S_CLK_EN);
@@ -1073,31 +1081,24 @@ static void hdmi_audio_init(struct hdmi_context *hdata)
| HDMI_I2S_SET_SDATA_BIT(data_num)
| HDMI_I2S_BASIC_FORMAT);
- /* Configure register related to CUV information */
- hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST_0, HDMI_I2S_CH_STATUS_MODE_0
- | HDMI_I2S_2AUD_CH_WITHOUT_PREEMPH
- | HDMI_I2S_COPYRIGHT
- | HDMI_I2S_LINEAR_PCM
- | HDMI_I2S_CONSUMER_FORMAT);
- hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST_1, HDMI_I2S_CD_PLAYER);
- hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST_2, HDMI_I2S_SET_SOURCE_NUM(0));
- hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST_3, HDMI_I2S_CLK_ACCUR_LEVEL_2
- | HDMI_I2S_SET_SMP_FREQ(sample_frq));
- hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST_4,
- HDMI_I2S_ORG_SMP_FREQ_44_1
- | HDMI_I2S_WORD_LEN_MAX24_24BITS
- | HDMI_I2S_WORD_LEN_MAX_24BITS);
+ /* Configuration of the audio channel status registers */
+ for (i = 0; i < HDMI_I2S_CH_ST_MAXNUM; i++)
+ hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST(i),
+ hdata->audio.params.iec.status[i]);
hdmi_reg_writeb(hdata, HDMI_I2S_CH_ST_CON, HDMI_I2S_CH_STATUS_RELOAD);
}
-static void hdmi_audio_control(struct hdmi_context *hdata, bool onoff)
+static void hdmi_audio_control(struct hdmi_context *hdata)
{
+ bool enable = !hdata->audio.mute;
+
if (hdata->dvi_mode)
return;
- hdmi_reg_writeb(hdata, HDMI_AUI_CON, onoff ? 2 : 0);
- hdmi_reg_writemask(hdata, HDMI_CON_0, onoff ?
+ hdmi_reg_writeb(hdata, HDMI_AUI_CON, enable ?
+ HDMI_AVI_CON_EVERY_VSYNC : HDMI_AUI_CON_NO_TRAN);
+ hdmi_reg_writemask(hdata, HDMI_CON_0, enable ?
HDMI_ASP_EN : HDMI_ASP_DIS, HDMI_ASP_MASK);
}
@@ -1428,13 +1429,14 @@ static void hdmiphy_conf_apply(struct hdmi_context *hdata)
hdmiphy_wait_for_pll(hdata);
}
+/* Should be called with hdata->mutex mutex held */
static void hdmi_conf_apply(struct hdmi_context *hdata)
{
hdmi_start(hdata, false);
hdmi_conf_init(hdata);
- hdmi_audio_init(hdata);
+ hdmi_audio_config(hdata);
hdmi_mode_apply(hdata);
- hdmi_audio_control(hdata, true);
+ hdmi_audio_control(hdata);
}
static void hdmi_set_refclk(struct hdmi_context *hdata, bool on)
@@ -1446,6 +1448,7 @@ static void hdmi_set_refclk(struct hdmi_context *hdata, bool on)
SYSREG_HDMI_REFCLK_INT_CLK, on ? ~0 : 0);
}
+/* Should be called with hdata->mutex mutex held. */
static void hdmiphy_enable(struct hdmi_context *hdata)
{
if (hdata->powered)
@@ -1468,6 +1471,7 @@ static void hdmiphy_enable(struct hdmi_context *hdata)
hdata->powered = true;
}
+/* Should be called with hdata->mutex mutex held. */
static void hdmiphy_disable(struct hdmi_context *hdata)
{
if (!hdata->powered)
@@ -1493,28 +1497,38 @@ static void hdmi_enable(struct drm_encoder *encoder)
{
struct hdmi_context *hdata = encoder_to_hdmi(encoder);
+ mutex_lock(&hdata->mutex);
+
hdmiphy_enable(hdata);
hdmi_conf_apply(hdata);
+
+ mutex_unlock(&hdata->mutex);
}
static void hdmi_disable(struct drm_encoder *encoder)
{
struct hdmi_context *hdata = encoder_to_hdmi(encoder);
- if (!hdata->powered)
+ mutex_lock(&hdata->mutex);
+
+ if (hdata->powered) {
+ /*
+ * The SFRs of VP and Mixer are updated by Vertical Sync of
+ * Timing generator which is a part of HDMI so the sequence
+ * to disable TV Subsystem should be as following,
+ * VP -> Mixer -> HDMI
+ *
+ * To achieve such sequence HDMI is disabled together with
+ * HDMI PHY, via pipe clock callback.
+ */
+ mutex_unlock(&hdata->mutex);
+ cancel_delayed_work(&hdata->hotplug_work);
+ cec_notifier_set_phys_addr(hdata->notifier,
+ CEC_PHYS_ADDR_INVALID);
return;
+ }
- /*
- * The SFRs of VP and Mixer are updated by Vertical Sync of
- * Timing generator which is a part of HDMI so the sequence
- * to disable TV Subsystem should be as following,
- * VP -> Mixer -> HDMI
- *
- * To achieve such sequence HDMI is disabled together with HDMI PHY, via
- * pipe clock callback.
- */
- cancel_delayed_work(&hdata->hotplug_work);
- cec_notifier_set_phys_addr(hdata->notifier, CEC_PHYS_ADDR_INVALID);
+ mutex_unlock(&hdata->mutex);
}
static const struct drm_encoder_helper_funcs exynos_hdmi_encoder_helper_funcs = {
@@ -1527,6 +1541,99 @@ static const struct drm_encoder_funcs exynos_hdmi_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
+static void hdmi_audio_shutdown(struct device *dev, void *data)
+{
+ struct hdmi_context *hdata = dev_get_drvdata(dev);
+
+ mutex_lock(&hdata->mutex);
+
+ hdata->audio.mute = true;
+
+ if (hdata->powered)
+ hdmi_audio_control(hdata);
+
+ mutex_unlock(&hdata->mutex);
+}
+
+static int hdmi_audio_hw_params(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
+{
+ struct hdmi_context *hdata = dev_get_drvdata(dev);
+
+ 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;
+ }
+
+ mutex_lock(&hdata->mutex);
+
+ hdata->audio.params = *params;
+
+ if (hdata->powered) {
+ hdmi_audio_config(hdata);
+ hdmi_audio_infoframe_apply(hdata);
+ }
+
+ mutex_unlock(&hdata->mutex);
+
+ return 0;
+}
+
+static int hdmi_audio_digital_mute(struct device *dev, void *data, bool mute)
+{
+ struct hdmi_context *hdata = dev_get_drvdata(dev);
+
+ mutex_lock(&hdata->mutex);
+
+ hdata->audio.mute = mute;
+
+ if (hdata->powered)
+ hdmi_audio_control(hdata);
+
+ mutex_unlock(&hdata->mutex);
+
+ return 0;
+}
+
+static int hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf,
+ size_t len)
+{
+ struct hdmi_context *hdata = dev_get_drvdata(dev);
+ struct drm_connector *connector = &hdata->connector;
+
+ 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 hdmi_register_audio_device(struct hdmi_context *hdata)
+{
+ struct hdmi_codec_pdata codec_data = {
+ .ops = &audio_codec_ops,
+ .max_i2s_channels = 6,
+ .i2s = 1,
+ };
+
+ hdata->audio.pdev = platform_device_register_data(
+ hdata->dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
+ &codec_data, sizeof(codec_data));
+
+ return PTR_ERR_OR_ZERO(hdata->audio.pdev);
+}
+
static void hdmi_hotplug_work_func(struct work_struct *work)
{
struct hdmi_context *hdata;
@@ -1602,11 +1709,14 @@ static void hdmiphy_clk_enable(struct exynos_drm_clk *clk, bool enable)
{
struct hdmi_context *hdata = container_of(clk, struct hdmi_context,
phy_clk);
+ mutex_lock(&hdata->mutex);
if (enable)
hdmiphy_enable(hdata);
else
hdmiphy_disable(hdata);
+
+ mutex_unlock(&hdata->mutex);
}
static int hdmi_bridge_init(struct hdmi_context *hdata)
@@ -1817,6 +1927,7 @@ out:
static int hdmi_probe(struct platform_device *pdev)
{
+ struct hdmi_audio_infoframe *audio_infoframe;
struct device *dev = &pdev->dev;
struct hdmi_context *hdata;
struct resource *res;
@@ -1832,6 +1943,8 @@ static int hdmi_probe(struct platform_device *pdev)
hdata->dev = dev;
+ mutex_init(&hdata->mutex);
+
ret = hdmi_resources_init(hdata);
if (ret) {
if (ret != -EPROBE_DEFER)
@@ -1891,12 +2004,26 @@ static int hdmi_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
- ret = component_add(&pdev->dev, &hdmi_component_ops);
+ audio_infoframe = &hdata->audio.infoframe;
+ hdmi_audio_infoframe_init(audio_infoframe);
+ audio_infoframe->coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
+ audio_infoframe->sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
+ audio_infoframe->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
+ audio_infoframe->channels = 2;
+
+ ret = hdmi_register_audio_device(hdata);
if (ret)
goto err_notifier_put;
+ ret = component_add(&pdev->dev, &hdmi_component_ops);
+ if (ret)
+ goto err_unregister_audio;
+
return ret;
+err_unregister_audio:
+ platform_device_unregister(hdata->audio.pdev);
+
err_notifier_put:
cec_notifier_put(hdata->notifier);
pm_runtime_disable(dev);
@@ -1920,6 +2047,7 @@ static int hdmi_remove(struct platform_device *pdev)
cec_notifier_set_phys_addr(hdata->notifier, CEC_PHYS_ADDR_INVALID);
component_del(&pdev->dev, &hdmi_component_ops);
+ platform_device_unregister(hdata->audio.pdev);
cec_notifier_put(hdata->notifier);
pm_runtime_disable(&pdev->dev);
@@ -1935,6 +2063,8 @@ static int hdmi_remove(struct platform_device *pdev)
put_device(&hdata->ddc_adpt->dev);
+ mutex_destroy(&hdata->mutex);
+
return 0;
}
diff --git a/drivers/gpu/drm/exynos/regs-hdmi.h b/drivers/gpu/drm/exynos/regs-hdmi.h
index a0507dc18d9e..04be0f7e8193 100644
--- a/drivers/gpu/drm/exynos/regs-hdmi.h
+++ b/drivers/gpu/drm/exynos/regs-hdmi.h
@@ -419,11 +419,9 @@
#define HDMI_I2S_DSD_CON HDMI_I2S_BASE(0x01c)
#define HDMI_I2S_MUX_CON HDMI_I2S_BASE(0x020)
#define HDMI_I2S_CH_ST_CON HDMI_I2S_BASE(0x024)
-#define HDMI_I2S_CH_ST_0 HDMI_I2S_BASE(0x028)
-#define HDMI_I2S_CH_ST_1 HDMI_I2S_BASE(0x02c)
-#define HDMI_I2S_CH_ST_2 HDMI_I2S_BASE(0x030)
-#define HDMI_I2S_CH_ST_3 HDMI_I2S_BASE(0x034)
-#define HDMI_I2S_CH_ST_4 HDMI_I2S_BASE(0x038)
+/* n must be within range 0...(HDMI_I2S_CH_ST_MAXNUM - 1) */
+#define HDMI_I2S_CH_ST_MAXNUM 5
+#define HDMI_I2S_CH_ST(n) HDMI_I2S_BASE(0x028 + 4 * (n))
#define HDMI_I2S_CH_ST_SH_0 HDMI_I2S_BASE(0x03c)
#define HDMI_I2S_CH_ST_SH_1 HDMI_I2S_BASE(0x040)
#define HDMI_I2S_CH_ST_SH_2 HDMI_I2S_BASE(0x044)
generated by cgit (git 2.34.1) at 2024-06-05 16:42:54 +0000