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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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21d808405f
While adding SiI9022A support to the iwg23s board, it came up that when the HDMI transmitter is in pass through mode the device is not compliant with the I2C specification anymore, as it requires a far bigger tbuf, due to a delay the HDMI transmitter is adding when relaying the STOP condition on the monitor i2c side of things. When not providing an appropriate delay after the STOP condition the i2c bus would get stuck. Also, any other traffic on the bus while talking to the monitor may cause the transaction to fail or even cause issues with the i2c bus as well. I2c-gates seemed to reach consent as a possible way to address these issues, and as such this patch is implementing a solution based on that. Since others are clearly relying on the current implementation of the driver, this patch won't require any DT changes. Since we don't want any interference during the DDC Bus Request/Grant procedure and while talking to the monitor, we have to use the adapter locking primitives rather than the i2c-mux locking primitives. Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Peter Rosin <peda@axentia.se> Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Yannick Fertré <yannick.fertre@st.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/1541505156-8097-1-git-send-email-fabrizio.castro@bp.renesas.com |
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| .. | ||
| adv7511 | ||
| analogix | ||
| synopsys | ||
| analogix-anx78xx.c | ||
| analogix-anx78xx.h | ||
| cdns-dsi.c | ||
| dumb-vga-dac.c | ||
| Kconfig | ||
| lvds-encoder.c | ||
| Makefile | ||
| megachips-stdpxxxx-ge-b850v3-fw.c | ||
| nxp-ptn3460.c | ||
| panel.c | ||
| parade-ps8622.c | ||
| sii902x.c | ||
| sii9234.c | ||
| sil-sii8620.c | ||
| sil-sii8620.h | ||
| tc358764.c | ||
| tc358767.c | ||
| thc63lvd1024.c | ||
| ti-sn65dsi86.c | ||
| ti-tfp410.c | ||