MHL3 protocol requires registry adjustments depending on chosen video mode.
Necessary information is gathered in mode_fixup callback. In case of HDMI
video modes driver should also send special AVI and MHL infoframes.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
drivers/gpu/drm/bridge/sil-sii8620.c | 249 +++++++++++++++++++++++++++++++----
drivers/gpu/drm/bridge/sil-sii8620.h | 15 ++-
2 files changed, 231 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c
index 1c76905..2c7b5b9 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.c
+++ b/drivers/gpu/drm/bridge/sil-sii8620.c
@@ -32,6 +32,8 @@
#define SII8620_BURST_BUF_LEN 288
#define VAL_RX_HDMI_CTRL2_DEFVAL VAL_RX_HDMI_CTRL2_IDLE_CNT(3)
+#define MHL1_MAX_LCLK 225000
+#define MHL3_MAX_LCLK 600000
enum sii8620_mode {
CM_DISCONNECTED,
@@ -62,6 +64,9 @@ struct sii8620 {
struct regulator_bulk_data supplies[2];
struct mutex lock; /* context lock, protects fields below */
int error;
+ int pixel_clock;
+ unsigned int use_packed_pixel:1;
+ int video_code;
enum sii8620_mode mode;
enum sii8620_sink_type sink_type;
u8 cbus_status;
@@ -69,7 +74,7 @@ struct sii8620 {
u8 xstat[MHL_XDS_SIZE];
u8 devcap[MHL_DCAP_SIZE];
u8 xdevcap[MHL_XDC_SIZE];
- u8 avif[19];
+ u8 avif[HDMI_INFOFRAME_SIZE(AVI)];
struct edid *edid;
unsigned int gen2_write_burst:1;
enum sii8620_mt_state mt_state;
@@ -685,6 +690,40 @@ static void sii8620_burst_tx_rbuf_info(struct sii8620 *ctx, int size)
d->size = cpu_to_le16(size);
}
+static u8 sii8620_checksum(void *ptr, int size)
+{
+ u8 *d = ptr, sum = 0;
+
+ while (size--)
+ sum += *d++;
+
+ return sum;
+}
+
+static void sii8620_mhl_burst_hdr_set(struct mhl3_burst_header *h,
+ enum mhl_burst_id id)
+{
+ h->id = cpu_to_be16(id);
+ h->total_entries = 1;
+ h->sequence_index = 1;
+}
+
+static void sii8620_burst_tx_bits_per_pixel_fmt(struct sii8620 *ctx, u8 fmt)
+{
+ struct mhl_burst_bits_per_pixel_fmt *d;
+ const int size = sizeof(*d) + sizeof(d->desc[0]);
+
+ d = sii8620_burst_get_tx_buf(ctx, size);
+ if (!d)
+ return;
+
+ sii8620_mhl_burst_hdr_set(&d->hdr, MHL_BURST_ID_BITS_PER_PIXEL_FMT);
+ d->num_entries = 1;
+ d->desc[0].stream_id = 0;
+ d->desc[0].pixel_format = fmt;
+ d->hdr.checksum -= sii8620_checksum(d, size);
+}
+
static void sii8620_burst_rx_all(struct sii8620 *ctx)
{
u8 *d = ctx->burst.rx_buf;
@@ -949,32 +988,162 @@ static void sii8620_stop_video(struct sii8620 *ctx)
sii8620_write(ctx, REG_TPI_SC, val);
}
+static void sii8620_set_format(struct sii8620 *ctx)
+{
+ u8 out_fmt;
+
+ if (sii8620_is_mhl3(ctx)) {
+ sii8620_setbits(ctx, REG_M3_P0CTRL,
+ BIT_M3_P0CTRL_MHL3_P0_PIXEL_MODE_PACKED,
+ ctx->use_packed_pixel ? ~0 : 0);
+ } else {
+ if (ctx->use_packed_pixel)
+ sii8620_write_seq_static(ctx,
+ REG_VID_MODE, BIT_VID_MODE_M1080P,
+ REG_MHL_TOP_CTL, BIT_MHL_TOP_CTL_MHL_PP_SEL | 1,
+ REG_MHLTX_CTL6, 0x60
+ );
+ else
+ sii8620_write_seq_static(ctx,
+ REG_VID_MODE, 0,
+ REG_MHL_TOP_CTL, 1,
+ REG_MHLTX_CTL6, 0xa0
+ );
+ }
+
+ if (ctx->use_packed_pixel)
+ out_fmt = VAL_TPI_FORMAT(YCBCR422, FULL) |
+ BIT_TPI_OUTPUT_CSCMODE709;
+ else
+ out_fmt = VAL_TPI_FORMAT(RGB, FULL);
+
+ sii8620_write_seq(ctx,
+ REG_TPI_INPUT, VAL_TPI_FORMAT(RGB, FULL),
+ REG_TPI_OUTPUT, out_fmt,
+ );
+}
+
+#define MHL3_VSIF_TYPE 0x81
+#define MHL3_VSIF_VERSION 0x03
+#define MHL3_VSIF_LENGTH 0x0f
+#define IEEE_OUI_MHL3 0x7CA61D
+
+static void sii8620_mhl_infoframe_init(void *ptr, int size)
+{
+ u8 *buf = ptr;
+
+ memset(buf, 0, size);
+ buf[0] = MHL3_VSIF_TYPE;
+ buf[1] = MHL3_VSIF_VERSION;
+ buf[2] = MHL3_VSIF_LENGTH;
+ buf[4] = IEEE_OUI_MHL3 & 0xff;
+ buf[5] = (IEEE_OUI_MHL3 >> 8) & 0xff;
+ buf[6] = (IEEE_OUI_MHL3 >> 16) & 0xff;
+ buf[3] -= sii8620_checksum(buf, MHL3_VSIF_LENGTH);
+}
+
+static void sii8620_set_infoframes(struct sii8620 *ctx)
+{
+ union hdmi_infoframe frm;
+ u8 buf[31];
+ int ret;
+
+ if (!sii8620_is_mhl3(ctx) || !ctx->use_packed_pixel) {
+ sii8620_write(ctx, REG_TPI_SC,
+ BIT_TPI_SC_TPI_OUTPUT_MODE_0_HDMI);
+ sii8620_write_buf(ctx, REG_TPI_AVI_CHSUM, ctx->avif + 3,
+ ARRAY_SIZE(ctx->avif) - 3);
+ sii8620_write(ctx, REG_PKT_FILTER_0,
+ BIT_PKT_FILTER_0_DROP_CEA_GAMUT_PKT |
+ BIT_PKT_FILTER_0_DROP_MPEG_PKT |
+ BIT_PKT_FILTER_0_DROP_GCP_PKT,
+ BIT_PKT_FILTER_1_DROP_GEN_PKT);
+ return;
+ }
+
+ ret = hdmi_avi_infoframe_init(&frm.avi);
+ frm.avi.colorspace = HDMI_COLORSPACE_YUV422;
+ frm.avi.active_aspect = HDMI_ACTIVE_ASPECT_PICTURE;
+ frm.avi.picture_aspect = HDMI_PICTURE_ASPECT_16_9;
+ frm.avi.colorimetry = HDMI_COLORIMETRY_ITU_709;
+ frm.avi.video_code = ctx->video_code;
+ if (!ret)
+ ret = hdmi_avi_infoframe_pack(&frm.avi, buf, ARRAY_SIZE(buf));
+ if (ret > 0)
+ sii8620_write_buf(ctx, REG_TPI_AVI_CHSUM, buf + 3, ret - 3);
+ sii8620_write(ctx, REG_PKT_FILTER_0,
+ BIT_PKT_FILTER_0_DROP_CEA_GAMUT_PKT |
+ BIT_PKT_FILTER_0_DROP_MPEG_PKT |
+ BIT_PKT_FILTER_0_DROP_AVI_PKT |
+ BIT_PKT_FILTER_0_DROP_GCP_PKT,
+ BIT_PKT_FILTER_1_VSI_OVERRIDE_DIS |
+ BIT_PKT_FILTER_1_DROP_GEN_PKT |
+ BIT_PKT_FILTER_1_DROP_VSIF_PKT);
+
+ sii8620_write(ctx, REG_TPI_INFO_FSEL, BIT_TPI_INFO_FSEL_EN
+ | BIT_TPI_INFO_FSEL_RPT | VAL_TPI_INFO_FSEL_VSI);
+ sii8620_mhl_infoframe_init(buf, ARRAY_SIZE(buf));
+ sii8620_write_buf(ctx, REG_TPI_INFO_B0, buf, ARRAY_SIZE(buf));
+}
+
static void sii8620_start_hdmi(struct sii8620 *ctx)
{
sii8620_write_seq_static(ctx,
REG_RX_HDMI_CTRL2, VAL_RX_HDMI_CTRL2_DEFVAL
| BIT_RX_HDMI_CTRL2_USE_AV_MUTE,
REG_VID_OVRRD, BIT_VID_OVRRD_PP_AUTO_DISABLE
- | BIT_VID_OVRRD_M1080P_OVRRD,
- REG_VID_MODE, 0,
- REG_MHL_TOP_CTL, 0x1,
- REG_MHLTX_CTL6, 0xa0,
- REG_TPI_INPUT, VAL_TPI_FORMAT(RGB, FULL),
- REG_TPI_OUTPUT, VAL_TPI_FORMAT(RGB, FULL),
- );
+ | BIT_VID_OVRRD_M1080P_OVRRD);
+ sii8620_set_format(ctx);
- sii8620_mt_write_stat(ctx, MHL_DST_REG(LINK_MODE),
- MHL_DST_LM_CLK_MODE_NORMAL |
- MHL_DST_LM_PATH_ENABLED);
-
- sii8620_set_auto_zone(ctx);
+ if (!sii8620_is_mhl3(ctx)) {
+ sii8620_mt_write_stat(ctx, MHL_DST_REG(LINK_MODE),
+ MHL_DST_LM_CLK_MODE_NORMAL | MHL_DST_LM_PATH_ENABLED);
+ sii8620_set_auto_zone(ctx);
+ } else {
+ static const struct {
+ int max_clk;
+ u8 zone;
+ u8 link_rate;
+ u8 rrp_decode;
+ } clk_spec[] = {
+ { 150000, VAL_TX_ZONE_CTL3_TX_ZONE_1_5GBPS,
+ MHL_XDS_LINK_RATE_1_5_GBPS, 0x38 },
+ { 300000, VAL_TX_ZONE_CTL3_TX_ZONE_3GBPS,
+ MHL_XDS_LINK_RATE_3_0_GBPS, 0x40 },
+ { 600000, VAL_TX_ZONE_CTL3_TX_ZONE_6GBPS,
+ MHL_XDS_LINK_RATE_6_0_GBPS, 0x40 },
+ };
+ u8 p0_ctrl = BIT_M3_P0CTRL_MHL3_P0_PORT_EN;
+ int clk = ctx->pixel_clock * (ctx->use_packed_pixel ? 2 : 3);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(clk_spec); ++i)
+ if (clk < clk_spec[i].max_clk)
+ break;
- sii8620_write(ctx, REG_TPI_SC, BIT_TPI_SC_TPI_OUTPUT_MODE_0_HDMI);
+ if (100 * clk >= 98 * clk_spec[i].max_clk)
+ p0_ctrl |= BIT_M3_P0CTRL_MHL3_P0_UNLIMIT_EN;
- sii8620_write_buf(ctx, REG_TPI_AVI_CHSUM, ctx->avif,
- ARRAY_SIZE(ctx->avif));
+ sii8620_burst_tx_bits_per_pixel_fmt(ctx, ctx->use_packed_pixel);
+ sii8620_burst_send(ctx);
+ sii8620_write_seq(ctx,
+ REG_MHL_DP_CTL0, 0xf0,
+ REG_MHL3_TX_ZONE_CTL, clk_spec[i].zone);
+ sii8620_setbits(ctx, REG_M3_P0CTRL,
+ BIT_M3_P0CTRL_MHL3_P0_PORT_EN
+ | BIT_M3_P0CTRL_MHL3_P0_UNLIMIT_EN, p0_ctrl);
+ sii8620_setbits(ctx, REG_M3_POSTM, MSK_M3_POSTM_RRP_DECODE,
+ clk_spec[i].rrp_decode);
+ sii8620_write_seq_static(ctx,
+ REG_M3_CTRL, VAL_M3_CTRL_MHL3_VALUE
+ | BIT_M3_CTRL_H2M_SWRST,
+ REG_M3_CTRL, VAL_M3_CTRL_MHL3_VALUE
+ );
+ sii8620_mt_write_stat(ctx, MHL_XDS_REG(AVLINK_MODE_CONTROL),
+ clk_spec[i].link_rate);
+ }
- sii8620_write(ctx, REG_PKT_FILTER_0, 0xa1, 0x2);
+ sii8620_set_infoframes(ctx);
}
static void sii8620_start_video(struct sii8620 *ctx)
@@ -1834,22 +2003,44 @@ static bool sii8620_mode_fixup(struct drm_bridge *bridge,
struct drm_display_mode *adjusted_mode)
{
struct sii8620 *ctx = bridge_to_sii8620(bridge);
- bool ret = false;
- int max_clock = 74250;
-
- mutex_lock(&ctx->lock);
-
- if (mode->flags & DRM_MODE_FLAG_INTERLACE)
- goto out;
+ int max_lclk;
+ bool ret = true;
- if (ctx->devcap[MHL_DCAP_VID_LINK_MODE] & MHL_DCAP_VID_LINK_PPIXEL)
- max_clock = 300000;
+ if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
+ return false;
- ret = mode->clock <= max_clock;
+ mutex_lock(&ctx->lock);
-out:
+ max_lclk = sii8620_is_mhl3(ctx) ? MHL3_MAX_LCLK : MHL1_MAX_LCLK;
+ if (max_lclk > 3 * adjusted_mode->clock) {
+ ctx->use_packed_pixel = 0;
+ goto end;
+ }
+ if ((ctx->devcap[MHL_DCAP_VID_LINK_MODE] & MHL_DCAP_VID_LINK_PPIXEL) &&
+ max_lclk > 2 * adjusted_mode->clock) {
+ ctx->use_packed_pixel = 1;
+ goto end;
+ }
+ ret = false;
+end:
+ if (ret) {
+ u8 vic = drm_match_cea_mode(adjusted_mode);
+
+ if (!vic) {
+ union hdmi_infoframe frm;
+ u8 mhl_vic[] = { 0, 95, 94, 93, 98 };
+
+ drm_hdmi_vendor_infoframe_from_display_mode(
+ &frm.vendor.hdmi, adjusted_mode);
+ vic = frm.vendor.hdmi.vic;
+ if (vic >= ARRAY_SIZE(mhl_vic))
+ vic = 0;
+ vic = mhl_vic[vic];
+ }
+ ctx->video_code = vic;
+ ctx->pixel_clock = adjusted_mode->clock;
+ }
mutex_unlock(&ctx->lock);
-
return ret;
}
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.h b/drivers/gpu/drm/bridge/sil-sii8620.h
index f7bfbc3..aefae67 100644
--- a/drivers/gpu/drm/bridge/sil-sii8620.h
+++ b/drivers/gpu/drm/bridge/sil-sii8620.h
@@ -1084,10 +1084,17 @@
/* TPI Info Frame Select, default value: 0x00 */
#define REG_TPI_INFO_FSEL 0x06bf
-#define BIT_TPI_INFO_FSEL_TPI_INFO_EN BIT(7)
-#define BIT_TPI_INFO_FSEL_TPI_INFO_RPT BIT(6)
-#define BIT_TPI_INFO_FSEL_TPI_INFO_READ_FLAG BIT(5)
-#define MSK_TPI_INFO_FSEL_TPI_INFO_SEL 0x07
+#define BIT_TPI_INFO_FSEL_EN BIT(7)
+#define BIT_TPI_INFO_FSEL_RPT BIT(6)
+#define BIT_TPI_INFO_FSEL_READ_FLAG BIT(5)
+#define MSK_TPI_INFO_FSEL_PKT 0x07
+#define VAL_TPI_INFO_FSEL_AVI 0x00
+#define VAL_TPI_INFO_FSEL_SPD 0x01
+#define VAL_TPI_INFO_FSEL_AUD 0x02
+#define VAL_TPI_INFO_FSEL_MPG 0x03
+#define VAL_TPI_INFO_FSEL_GEN 0x04
+#define VAL_TPI_INFO_FSEL_GEN2 0x05
+#define VAL_TPI_INFO_FSEL_VSI 0x06
/* TPI Info Byte #0, default value: 0x00 */
#define REG_TPI_INFO_B0 0x06c0
--
2.7.4
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