MHL3 requires that after reading EDID from the sink source should ask peer for features. To make both protocols happy the patch splits the code accordingly.
Signed-off-by: Andrzej Hajda a.hajda@samsung.com --- drivers/gpu/drm/bridge/sil-sii8620.c | 31 +++++++++++++++++++++++++++---- 1 file changed, 27 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/sil-sii8620.c b/drivers/gpu/drm/bridge/sil-sii8620.c index 6ef1a4d..d0e6dc3 100644 --- a/drivers/gpu/drm/bridge/sil-sii8620.c +++ b/drivers/gpu/drm/bridge/sil-sii8620.c @@ -482,6 +482,13 @@ static void sii8620_sink_detected(struct sii8620 *ctx, int ret)
dev_info(dev, "detected sink(type: %s): %s\n", sink_str[ctx->sink_type], sink_name); +} + +static void sii8620_edid_read(struct sii8620 *ctx, int ret) +{ + if (ret < 0) + return; + sii8620_set_upstream_edid(ctx); sii8620_enable_hpd(ctx); } @@ -787,12 +794,12 @@ static void sii8620_fetch_edid(struct sii8620 *ctx) edid = new_edid; } } - - if (fetched + FETCH_SIZE == edid_len) - sii8620_write(ctx, REG_INTR3, int3); }
- sii8620_write(ctx, REG_LM_DDC, lm_ddc); + sii8620_write_seq(ctx, + REG_INTR3_MASK, BIT_DDC_CMD_DONE, + REG_LM_DDC, lm_ddc + );
end: kfree(ctx->edid); @@ -1706,6 +1713,21 @@ static void sii8620_irq_block(struct sii8620 *ctx) sii8620_write(ctx, REG_EMSCINTR, stat); }
+static void sii8620_irq_ddc(struct sii8620 *ctx) +{ + u8 stat = sii8620_readb(ctx, REG_INTR3); + + if (stat & BIT_DDC_CMD_DONE) { + sii8620_write(ctx, REG_INTR3_MASK, 0); + if (sii8620_is_mhl3(ctx)) + sii8620_mt_set_int(ctx, MHL_INT_REG(RCHANGE), + MHL_INT_RC_FEAT_REQ); + else + sii8620_edid_read(ctx, 0); + } + sii8620_write(ctx, REG_INTR3, stat); +} + /* endian agnostic, non-volatile version of test_bit */ static bool sii8620_test_bit(unsigned int nr, const u8 *addr) { @@ -1726,6 +1748,7 @@ static irqreturn_t sii8620_irq_thread(int irq, void *data) { BIT_FAST_INTR_STAT_MERR, sii8620_irq_merr }, { BIT_FAST_INTR_STAT_BLOCK, sii8620_irq_block }, { BIT_FAST_INTR_STAT_EDID, sii8620_irq_edid }, + { BIT_FAST_INTR_STAT_DDC, sii8620_irq_ddc }, { BIT_FAST_INTR_STAT_SCDT, sii8620_irq_scdt }, { BIT_FAST_INTR_STAT_INFR, sii8620_irq_infr }, };