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drm/rockchip: dsi: Increase gen_rd_cmd_busy timeout

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When a read command is issued in video mode, gen_rd_cmd_busy
timeout delay needs to be increased to one frame.

Change-Id: Ic8070431c3d365f40da5f4758e578cece231e669
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
This commit is contained in:
Wyon Bi
2019-04-30 17:13:04 +08:00
committed by Tao Huang
parent 6fea8398e4
commit f58cc02df9
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/rockchip/dw-mipi-dsi.c
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@@ -847,12 +847,14 @@ static int dw_mipi_dsi_read_from_fifo(struct dw_mipi_dsi *dsi,
const struct mipi_dsi_msg *msg)
{
u8 *payload = msg->rx_buf;
unsigned int vrefresh = drm_mode_vrefresh(&dsi->mode);
u16 length;
u32 val;
int ret;
ret = regmap_read_poll_timeout(dsi->regmap, DSI_CMD_PKT_STATUS,
val, !(val & GEN_RD_CMD_BUSY), 50, 5000);
val, !(val & GEN_RD_CMD_BUSY),
0, DIV_ROUND_UP(1000000, vrefresh));
if (ret) {
dev_err(dsi->dev, "entire response isn't stored in the FIFO\n");
return ret;