From: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
This patch adds hdmi audio feature for exynos drm.
With this patch, i2s channel feeds audio data in hdmi when hdmi is connected.
Signed-off-by: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 167 +++++++++++++++++++++++++++++++
drivers/gpu/drm/exynos/regs-hdmi.h | 182 ++++++++++++++++++++++++++++++++++
2 files changed, 349 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 3583a7b..575a8cb 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1319,6 +1319,169 @@ static struct exynos_hdmi_display_ops display_ops = {
.power_on = hdmi_display_power_on,
};
+static void hdmi_set_acr(u32 freq, u8 *acr)
+{
+ u32 n, cts;
+
+ switch (freq) {
+ case 32000:
+ n = 4096;
+ cts = 27000;
+ break;
+ case 44100:
+ n = 6272;
+ cts = 30000;
+ break;
+ case 88200:
+ n = 12544;
+ cts = 30000;
+ break;
+ case 176400:
+ n = 25088;
+ cts = 30000;
+ break;
+ case 48000:
+ n = 6144;
+ cts = 27000;
+ break;
+ case 96000:
+ n = 12288;
+ cts = 27000;
+ break;
+ case 192000:
+ n = 24576;
+ cts = 27000;
+ break;
+ default:
+ n = 0;
+ cts = 0;
+ break;
+ }
+
+ acr[1] = cts >> 16;
+ acr[2] = cts >> 8 & 0xff;
+ acr[3] = cts & 0xff;
+
+ acr[4] = n >> 16;
+ acr[5] = n >> 8 & 0xff;
+ acr[6] = n & 0xff;
+}
+
+static void hdmi_reg_acr(struct hdmi_context *hdata, u8 *acr)
+{
+ hdmi_reg_writeb(hdata, HDMI_ACR_N0, acr[6]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_N1, acr[5]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_N2, acr[4]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_MCTS0, acr[3]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_MCTS1, acr[2]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_MCTS2, acr[1]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_CTS0, acr[3]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_CTS1, acr[2]);
+ hdmi_reg_writeb(hdata, HDMI_ACR_CTS2, acr[1]);
+
+ if (hdata->is_v13)
+ hdmi_reg_writeb(hdata, HDMI_V13_ACR_CON, 4);
+ else
+ hdmi_reg_writeb(hdata, HDMI_ACR_CON, 4);
+}
+
+static void hdmi_audio_init(struct hdmi_context *hdata)
+{
+ u32 sample_rate, bits_per_sample, frame_size_code;
+ u32 data_num, bit_ch, sample_frq;
+ u32 val;
+ u8 acr[7];
+
+ sample_rate = 44100;
+ bits_per_sample = 16;
+ frame_size_code = 0;
+
+ switch (bits_per_sample) {
+ case 20:
+ data_num = 2;
+ bit_ch = 1;
+ break;
+ case 24:
+ data_num = 3;
+ bit_ch = 1;
+ break;
+ default:
+ data_num = 1;
+ bit_ch = 0;
+ break;
+ }
+
+ hdmi_set_acr(sample_rate, acr);
+ hdmi_reg_acr(hdata, acr);
+
+ hdmi_reg_writeb(hdata, HDMI_I2S_MUX_CON, HDMI_I2S_IN_DISABLE
+ | HDMI_I2S_AUD_I2S | HDMI_I2S_CUV_I2S_ENABLE
+ | HDMI_I2S_MUX_ENABLE);
+
+ hdmi_reg_writeb(hdata, HDMI_I2S_MUX_CH, HDMI_I2S_CH0_EN
+ | 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);
+
+ val = hdmi_reg_read(hdata, HDMI_I2S_DSD_CON) | 0x01;
+ hdmi_reg_writeb(hdata, HDMI_I2S_DSD_CON, val);
+
+ /* Configuration I2S input ports. Configure I2S_PIN_SEL_0~4 */
+ hdmi_reg_writeb(hdata, HDMI_I2S_PIN_SEL_0, HDMI_I2S_SEL_SCLK(5)
+ | HDMI_I2S_SEL_LRCK(6));
+ hdmi_reg_writeb(hdata, HDMI_I2S_PIN_SEL_1, HDMI_I2S_SEL_SDATA1(1)
+ | HDMI_I2S_SEL_SDATA2(4));
+ hdmi_reg_writeb(hdata, HDMI_I2S_PIN_SEL_2, HDMI_I2S_SEL_SDATA3(1)
+ | HDMI_I2S_SEL_SDATA2(2));
+ hdmi_reg_writeb(hdata, HDMI_I2S_PIN_SEL_3, HDMI_I2S_SEL_DSD(0));
+
+ /* I2S_CON_1 & 2 */
+ hdmi_reg_writeb(hdata, HDMI_I2S_CON_1, HDMI_I2S_SCLK_FALLING_EDGE
+ | HDMI_I2S_L_CH_LOW_POL);
+ hdmi_reg_writeb(hdata, HDMI_I2S_CON_2, HDMI_I2S_MSB_FIRST_MODE
+ | HDMI_I2S_SET_BIT_CH(bit_ch)
+ | 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);
+
+ 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)
+{
+ u32 mod;
+
+ mod = hdmi_reg_read(hdata, HDMI_MODE_SEL);
+ if (mod & HDMI_DVI_MODE_EN)
+ return;
+
+ hdmi_reg_writeb(hdata, HDMI_AUI_CON, onoff ? 2 : 0);
+ hdmi_reg_writemask(hdata, HDMI_CON_0, onoff ?
+ HDMI_ASP_EN : HDMI_ASP_DIS, HDMI_ASP_MASK);
+}
+
static void hdmi_conf_reset(struct hdmi_context *hdata)
{
u32 reg;
@@ -1737,9 +1900,11 @@ static void hdmi_conf_apply(struct hdmi_context *hdata)
hdmi_conf_reset(hdata);
hdmi_conf_init(hdata);
+ hdmi_audio_init(hdata);
/* setting core registers */
hdmi_timing_apply(hdata);
+ hdmi_audio_control(hdata, true);
hdmi_regs_dump(hdata, "start");
}
@@ -1825,6 +1990,7 @@ static void hdmi_disable(void *ctx)
DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
if (hdata->enabled) {
+ hdmi_audio_control(hdata, false);
hdmiphy_conf_reset(hdata);
hdmi_conf_reset(hdata);
}
@@ -1983,6 +2149,7 @@ static void hdmi_resource_poweron(struct hdmi_context *hdata)
hdmiphy_conf_reset(hdata);
hdmi_conf_reset(hdata);
hdmi_conf_init(hdata);
+ hdmi_audio_init(hdata);
}
static void hdmi_resource_poweroff(struct hdmi_context *hdata)
diff --git a/drivers/gpu/drm/exynos/regs-hdmi.h b/drivers/gpu/drm/exynos/regs-hdmi.h
index 6b28715..3c04bea 100644
--- a/drivers/gpu/drm/exynos/regs-hdmi.h
+++ b/drivers/gpu/drm/exynos/regs-hdmi.h
@@ -22,6 +22,7 @@
/* HDMI Version 1.3 & Common */
#define HDMI_CTRL_BASE(x) ((x) + 0x00000000)
#define HDMI_CORE_BASE(x) ((x) + 0x00010000)
+#define HDMI_I2S_BASE(x) ((x) + 0x00040000)
#define HDMI_TG_BASE(x) ((x) + 0x00050000)
/* Control registers */
@@ -132,6 +133,9 @@
/* HDMI_CON_0 */
#define HDMI_BLUE_SCR_EN (1 << 5)
+#define HDMI_ASP_EN (1 << 2)
+#define HDMI_ASP_DIS (0 << 2)
+#define HDMI_ASP_MASK (1 << 2)
#define HDMI_EN (1 << 0)
/* HDMI_PHY_STATUS */
@@ -140,6 +144,8 @@
/* HDMI_MODE_SEL */
#define HDMI_MODE_HDMI_EN (1 << 1)
#define HDMI_MODE_DVI_EN (1 << 0)
+#define HDMI_DVI_MODE_EN (1)
+#define HDMI_DVI_MODE_DIS (0)
#define HDMI_MODE_MASK (3 << 0)
/* HDMI_TG_CMD */
@@ -268,6 +274,9 @@
#define HDMI_ACR_MCTS0 HDMI_CORE_BASE(0x0410)
#define HDMI_ACR_MCTS1 HDMI_CORE_BASE(0x0414)
#define HDMI_ACR_MCTS2 HDMI_CORE_BASE(0x0418)
+#define HDMI_ACR_CTS0 HDMI_CORE_BASE(0x0420)
+#define HDMI_ACR_CTS1 HDMI_CORE_BASE(0x0424)
+#define HDMI_ACR_CTS2 HDMI_CORE_BASE(0x0428)
#define HDMI_ACR_N0 HDMI_CORE_BASE(0x0430)
#define HDMI_ACR_N1 HDMI_CORE_BASE(0x0434)
#define HDMI_ACR_N2 HDMI_CORE_BASE(0x0438)
@@ -368,6 +377,179 @@
#define HDMI_BLUE_SCREEN_R_0 HDMI_CORE_BASE(0xD530)
#define HDMI_BLUE_SCREEN_R_1 HDMI_CORE_BASE(0xD534)
+/* HDMI I2S register */
+#define HDMI_I2S_CLK_CON HDMI_I2S_BASE(0x000)
+#define HDMI_I2S_CON_1 HDMI_I2S_BASE(0x004)
+#define HDMI_I2S_CON_2 HDMI_I2S_BASE(0x008)
+#define HDMI_I2S_PIN_SEL_0 HDMI_I2S_BASE(0x00c)
+#define HDMI_I2S_PIN_SEL_1 HDMI_I2S_BASE(0x010)
+#define HDMI_I2S_PIN_SEL_2 HDMI_I2S_BASE(0x014)
+#define HDMI_I2S_PIN_SEL_3 HDMI_I2S_BASE(0x018)
+#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)
+#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)
+#define HDMI_I2S_CH_ST_SH_3 HDMI_I2S_BASE(0x048)
+#define HDMI_I2S_CH_ST_SH_4 HDMI_I2S_BASE(0x04c)
+#define HDMI_I2S_MUX_CH HDMI_I2S_BASE(0x054)
+#define HDMI_I2S_MUX_CUV HDMI_I2S_BASE(0x058)
+
+/* I2S bit definition */
+
+/* I2S_CLK_CON */
+#define HDMI_I2S_CLK_DIS (0)
+#define HDMI_I2S_CLK_EN (1)
+
+/* I2S_CON_1 */
+#define HDMI_I2S_SCLK_FALLING_EDGE (0 << 1)
+#define HDMI_I2S_SCLK_RISING_EDGE (1 << 1)
+#define HDMI_I2S_L_CH_LOW_POL (0)
+#define HDMI_I2S_L_CH_HIGH_POL (1)
+
+/* I2S_CON_2 */
+#define HDMI_I2S_MSB_FIRST_MODE (0 << 6)
+#define HDMI_I2S_LSB_FIRST_MODE (1 << 6)
+#define HDMI_I2S_BIT_CH_32FS (0 << 4)
+#define HDMI_I2S_BIT_CH_48FS (1 << 4)
+#define HDMI_I2S_BIT_CH_RESERVED (2 << 4)
+#define HDMI_I2S_SDATA_16BIT (1 << 2)
+#define HDMI_I2S_SDATA_20BIT (2 << 2)
+#define HDMI_I2S_SDATA_24BIT (3 << 2)
+#define HDMI_I2S_BASIC_FORMAT (0)
+#define HDMI_I2S_L_JUST_FORMAT (2)
+#define HDMI_I2S_R_JUST_FORMAT (3)
+#define HDMI_I2S_CON_2_CLR (~(0xFF))
+#define HDMI_I2S_SET_BIT_CH(x) (((x) & 0x7) << 4)
+#define HDMI_I2S_SET_SDATA_BIT(x) (((x) & 0x7) << 2)
+
+/* I2S_PIN_SEL_0 */
+#define HDMI_I2S_SEL_SCLK(x) (((x) & 0x7) << 4)
+#define HDMI_I2S_SEL_LRCK(x) ((x) & 0x7)
+
+/* I2S_PIN_SEL_1 */
+#define HDMI_I2S_SEL_SDATA1(x) (((x) & 0x7) << 4)
+#define HDMI_I2S_SEL_SDATA2(x) ((x) & 0x7)
+
+/* I2S_PIN_SEL_2 */
+#define HDMI_I2S_SEL_SDATA3(x) (((x) & 0x7) << 4)
+#define HDMI_I2S_SEL_SDATA2(x) ((x) & 0x7)
+
+/* I2S_PIN_SEL_3 */
+#define HDMI_I2S_SEL_DSD(x) ((x) & 0x7)
+
+/* I2S_DSD_CON */
+#define HDMI_I2S_DSD_CLK_RI_EDGE (1 << 1)
+#define HDMI_I2S_DSD_CLK_FA_EDGE (0 << 1)
+#define HDMI_I2S_DSD_ENABLE (1)
+#define HDMI_I2S_DSD_DISABLE (0)
+
+/* I2S_MUX_CON */
+#define HDMI_I2S_NOISE_FILTER_ZERO (0 << 5)
+#define HDMI_I2S_NOISE_FILTER_2_STAGE (1 << 5)
+#define HDMI_I2S_NOISE_FILTER_3_STAGE (2 << 5)
+#define HDMI_I2S_NOISE_FILTER_4_STAGE (3 << 5)
+#define HDMI_I2S_NOISE_FILTER_5_STAGE (4 << 5)
+#define HDMI_I2S_IN_DISABLE (1 << 4)
+#define HDMI_I2S_IN_ENABLE (0 << 4)
+#define HDMI_I2S_AUD_SPDIF (0 << 2)
+#define HDMI_I2S_AUD_I2S (1 << 2)
+#define HDMI_I2S_AUD_DSD (2 << 2)
+#define HDMI_I2S_CUV_SPDIF_ENABLE (0 << 1)
+#define HDMI_I2S_CUV_I2S_ENABLE (1 << 1)
+#define HDMI_I2S_MUX_DISABLE (0)
+#define HDMI_I2S_MUX_ENABLE (1)
+#define HDMI_I2S_MUX_CON_CLR (~(0xFF))
+
+/* I2S_CH_ST_CON */
+#define HDMI_I2S_CH_STATUS_RELOAD (1)
+#define HDMI_I2S_CH_ST_CON_CLR (~(1))
+
+/* I2S_CH_ST_0 / I2S_CH_ST_SH_0 */
+#define HDMI_I2S_CH_STATUS_MODE_0 (0 << 6)
+#define HDMI_I2S_2AUD_CH_WITHOUT_PREEMPH (0 << 3)
+#define HDMI_I2S_2AUD_CH_WITH_PREEMPH (1 << 3)
+#define HDMI_I2S_DEFAULT_EMPHASIS (0 << 3)
+#define HDMI_I2S_COPYRIGHT (0 << 2)
+#define HDMI_I2S_NO_COPYRIGHT (1 << 2)
+#define HDMI_I2S_LINEAR_PCM (0 << 1)
+#define HDMI_I2S_NO_LINEAR_PCM (1 << 1)
+#define HDMI_I2S_CONSUMER_FORMAT (0)
+#define HDMI_I2S_PROF_FORMAT (1)
+#define HDMI_I2S_CH_ST_0_CLR (~(0xFF))
+
+/* I2S_CH_ST_1 / I2S_CH_ST_SH_1 */
+#define HDMI_I2S_CD_PLAYER (0x00)
+#define HDMI_I2S_DAT_PLAYER (0x03)
+#define HDMI_I2S_DCC_PLAYER (0x43)
+#define HDMI_I2S_MINI_DISC_PLAYER (0x49)
+
+/* I2S_CH_ST_2 / I2S_CH_ST_SH_2 */
+#define HDMI_I2S_CHANNEL_NUM_MASK (0xF << 4)
+#define HDMI_I2S_SOURCE_NUM_MASK (0xF)
+#define HDMI_I2S_SET_CHANNEL_NUM(x) (((x) & (0xF)) << 4)
+#define HDMI_I2S_SET_SOURCE_NUM(x) ((x) & (0xF))
+
+/* I2S_CH_ST_3 / I2S_CH_ST_SH_3 */
+#define HDMI_I2S_CLK_ACCUR_LEVEL_1 (1 << 4)
+#define HDMI_I2S_CLK_ACCUR_LEVEL_2 (0 << 4)
+#define HDMI_I2S_CLK_ACCUR_LEVEL_3 (2 << 4)
+#define HDMI_I2S_SMP_FREQ_44_1 (0x0)
+#define HDMI_I2S_SMP_FREQ_48 (0x2)
+#define HDMI_I2S_SMP_FREQ_32 (0x3)
+#define HDMI_I2S_SMP_FREQ_96 (0xA)
+#define HDMI_I2S_SET_SMP_FREQ(x) ((x) & (0xF))
+
+/* I2S_CH_ST_4 / I2S_CH_ST_SH_4 */
+#define HDMI_I2S_ORG_SMP_FREQ_44_1 (0xF << 4)
+#define HDMI_I2S_ORG_SMP_FREQ_88_2 (0x7 << 4)
+#define HDMI_I2S_ORG_SMP_FREQ_22_05 (0xB << 4)
+#define HDMI_I2S_ORG_SMP_FREQ_176_4 (0x3 << 4)
+#define HDMI_I2S_WORD_LEN_NOT_DEFINE (0x0 << 1)
+#define HDMI_I2S_WORD_LEN_MAX24_20BITS (0x1 << 1)
+#define HDMI_I2S_WORD_LEN_MAX24_22BITS (0x2 << 1)
+#define HDMI_I2S_WORD_LEN_MAX24_23BITS (0x4 << 1)
+#define HDMI_I2S_WORD_LEN_MAX24_24BITS (0x5 << 1)
+#define HDMI_I2S_WORD_LEN_MAX24_21BITS (0x6 << 1)
+#define HDMI_I2S_WORD_LEN_MAX20_16BITS (0x1 << 1)
+#define HDMI_I2S_WORD_LEN_MAX20_18BITS (0x2 << 1)
+#define HDMI_I2S_WORD_LEN_MAX20_19BITS (0x4 << 1)
+#define HDMI_I2S_WORD_LEN_MAX20_20BITS (0x5 << 1)
+#define HDMI_I2S_WORD_LEN_MAX20_17BITS (0x6 << 1)
+#define HDMI_I2S_WORD_LEN_MAX_24BITS (1)
+#define HDMI_I2S_WORD_LEN_MAX_20BITS (0)
+
+/* I2S_MUX_CH */
+#define HDMI_I2S_CH3_R_EN (1 << 7)
+#define HDMI_I2S_CH3_L_EN (1 << 6)
+#define HDMI_I2S_CH3_EN (3 << 6)
+#define HDMI_I2S_CH2_R_EN (1 << 5)
+#define HDMI_I2S_CH2_L_EN (1 << 4)
+#define HDMI_I2S_CH2_EN (3 << 4)
+#define HDMI_I2S_CH1_R_EN (1 << 3)
+#define HDMI_I2S_CH1_L_EN (1 << 2)
+#define HDMI_I2S_CH1_EN (3 << 2)
+#define HDMI_I2S_CH0_R_EN (1 << 1)
+#define HDMI_I2S_CH0_L_EN (1)
+#define HDMI_I2S_CH0_EN (3)
+#define HDMI_I2S_CH_ALL_EN (0xFF)
+#define HDMI_I2S_MUX_CH_CLR (~HDMI_I2S_CH_ALL_EN)
+
+/* I2S_MUX_CUV */
+#define HDMI_I2S_CUV_R_EN (1 << 1)
+#define HDMI_I2S_CUV_L_EN (1)
+#define HDMI_I2S_CUV_RL_EN (0x03)
+
+/* I2S_CUV_L_R */
+#define HDMI_I2S_CUV_R_DATA_MASK (0x7 << 4)
+#define HDMI_I2S_CUV_L_DATA_MASK (0x7)
+
/* Timing generator registers */
/* TG configure/status registers */
#define HDMI_TG_VACT_ST3_L HDMI_TG_BASE(0x0068)
--
1.7.4.1
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