diff options
| author | John Keeping <john@metanate.com> | 2017-02-24 15:54:51 +0300 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2017-03-01 22:48:52 +0300 |
| commit | 52c66e4f6e28f37239f21ed1b79c341d33f49655 (patch) | |
| tree | 8a6eb6e5ef3bdb21bb10bb2b676d64302f005889 /drivers/gpu/drm | |
| parent | 028316fb6fe9c042fa2ab90e768d7733edfbaa89 (diff) | |
| download | linux-52c66e4f6e28f37239f21ed1b79c341d33f49655.tar.xz | |
drm/rockchip: dw-mipi-dsi: respect message flags
Instead of always sending commands in LP mode, respect the
MIPI_DSI_MSG_USE_LPM flag to decide how to send each message. Also
request acks if MIPI_DSI_MSG_REQ_ACK is set.
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170224125506.21533-9-john@metanate.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c index 374b18c550fd..a20d669b73ee 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -542,6 +542,19 @@ static int dw_mipi_dsi_host_detach(struct mipi_dsi_host *host, return 0; } +static void dw_mipi_message_config(struct dw_mipi_dsi *dsi, + const struct mipi_dsi_msg *msg) +{ + u32 val = 0; + + if (msg->flags & MIPI_DSI_MSG_REQ_ACK) + val |= EN_ACK_RQST; + if (msg->flags & MIPI_DSI_MSG_USE_LPM) + val |= CMD_MODE_ALL_LP; + + dsi_write(dsi, DSI_CMD_MODE_CFG, val); +} + static int dw_mipi_dsi_gen_pkt_hdr_write(struct dw_mipi_dsi *dsi, u32 hdr_val) { int ret; @@ -636,6 +649,8 @@ static ssize_t dw_mipi_dsi_host_transfer(struct mipi_dsi_host *host, struct dw_mipi_dsi *dsi = host_to_dsi(host); int ret; + dw_mipi_message_config(dsi, msg); + switch (msg->type) { case MIPI_DSI_DCS_SHORT_WRITE: case MIPI_DSI_DCS_SHORT_WRITE_PARAM: @@ -747,7 +762,6 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi) { dsi_write(dsi, DSI_TO_CNT_CFG, HSTX_TO_CNT(1000) | LPRX_TO_CNT(1000)); dsi_write(dsi, DSI_BTA_TO_CNT, 0xd00); - dsi_write(dsi, DSI_CMD_MODE_CFG, CMD_MODE_ALL_LP); dsi_write(dsi, DSI_MODE_CFG, ENABLE_CMD_MODE); } |