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drm/rockchip: dw-mipi-dsi: respect message flags

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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
This commit is contained in:
John Keeping 2017-02-24 12:54:51 +00:00 committed by Sean Paul
parent 028316fb6f
commit 52c66e4f6e
1 changed files with 15 additions and 1 deletions
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16
drivers/gpu/drm/rockchip/dw-mipi-dsi.c
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@ -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);
}