Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1564165 > unrolled thread
| Started by | John Keeping <john@metanate.com> |
|---|---|
| First post | 2017-01-21 17:40 +0100 |
| Last post | 2017-01-22 08:20 +0100 |
| Articles | 2 — 2 participants |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
[PATCH v2 09/26] drm/rockchip: dw-mipi-dsi: respect message flags John Keeping <john@metanate.com> - 2017-01-21 17:40 +0100
Re: [PATCH v2 09/26] drm/rockchip: dw-mipi-dsi: respect message flags Chris Zhong <zyw@rock-chips.com> - 2017-01-22 08:20 +0100
| From | John Keeping <john@metanate.com> |
|---|---|
| Date | 2017-01-21 17:40 +0100 |
| Subject | [PATCH v2 09/26] drm/rockchip: dw-mipi-dsi: respect message flags |
| Message-ID | <t26RQ-6cn-31@gated-at.bofh.it> |
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>
---
Unchanged in v2
---
drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 92dbc3e56603..15d33c3c8cb7 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;
@@ -634,6 +647,8 @@ 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:
@@ -745,7 +760,6 @@ 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);
}
--
2.11.0.197.gb556de5.dirty
[toc] | [next] | [standalone]
| From | Chris Zhong <zyw@rock-chips.com> |
|---|---|
| Date | 2017-01-22 08:20 +0100 |
| Message-ID | <t2kBr-6bS-5@gated-at.bofh.it> |
| In reply to | #1564165 |
Hi John
Reviewed-by: Chris Zhong <zyw@rock-chips.com>
On 01/22/2017 12:31 AM, John Keeping wrote:
> 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>
> ---
> Unchanged in v2
> ---
> drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> index 92dbc3e56603..15d33c3c8cb7 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;
> @@ -634,6 +647,8 @@ 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:
> @@ -745,7 +760,6 @@ 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);
> }
>
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web