Re: [PATCH v3 6/6] drm/msm/dsi: support DSC configurations with slice_per_pkt > 1
Dmitry Baryshkov 于2024年4月3日周三 18:51写道： > > On Wed, 3 Apr 2024 at 12:11, Jun Nie wrote: > > > > From: Jonathan Marek > > > > Support slice_per_pkt in msm driver. > > > > Note that the removed "pkt_per_line = slice_per_intf * slice_per_pkt" > > comment is incorrect. > > > > Also trim the code to simplify the dsc reference. > > > > Signed-off-by: Jonathan Marek > > Signed-off-by: Jun Nie > > --- > > drivers/gpu/drm/msm/dsi/dsi_host.c | 35 ++- > > 1 file changed, 14 insertions(+), 21 deletions(-) > > > > diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c > > b/drivers/gpu/drm/msm/dsi/dsi_host.c > > index b0507a42ee6a..0c6f40dbd25c 100644 > > --- a/drivers/gpu/drm/msm/dsi/dsi_host.c > > +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c > > @@ -866,17 +866,10 @@ static void dsi_update_dsc_timing(struct msm_dsi_host > > *msm_host, bool is_cmd_mod > > slice_per_intf = msm_dsc_get_slices_per_intf(dsc, hdisplay); > > > > total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf; > > - bytes_per_pkt = dsc->slice_chunk_size; /* * slice_per_pkt; */ > > - > > + bytes_per_pkt = dsc->slice_chunk_size * dsc->slice_per_pkt; > > Please don't mix cleanup and functional changes. OK. Will fix this.
Re: [PATCH v3 6/6] drm/msm/dsi: support DSC configurations with slice_per_pkt > 1
On Wed, 3 Apr 2024 at 12:11, Jun Nie wrote:
>
> From: Jonathan Marek
>
> Support slice_per_pkt in msm driver.
>
> Note that the removed "pkt_per_line = slice_per_intf * slice_per_pkt"
> comment is incorrect.
>
> Also trim the code to simplify the dsc reference.
>
> Signed-off-by: Jonathan Marek
> Signed-off-by: Jun Nie
> ---
> drivers/gpu/drm/msm/dsi/dsi_host.c | 35 ++-
> 1 file changed, 14 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c
> b/drivers/gpu/drm/msm/dsi/dsi_host.c
> index b0507a42ee6a..0c6f40dbd25c 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
> @@ -866,17 +866,10 @@ static void dsi_update_dsc_timing(struct msm_dsi_host
> *msm_host, bool is_cmd_mod
> slice_per_intf = msm_dsc_get_slices_per_intf(dsc, hdisplay);
>
> total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf;
> - bytes_per_pkt = dsc->slice_chunk_size; /* * slice_per_pkt; */
> -
> + bytes_per_pkt = dsc->slice_chunk_size * dsc->slice_per_pkt;
Please don't mix cleanup and functional changes.
> eol_byte_num = total_bytes_per_intf % 3;
>
> - /*
> -* Typically, pkt_per_line = slice_per_intf * slice_per_pkt.
> -*
> -* Since the current driver only supports slice_per_pkt = 1,
> -* pkt_per_line will be equal to slice per intf for now.
> -*/
> - pkt_per_line = slice_per_intf;
> + pkt_per_line = slice_per_intf / dsc->slice_per_pkt;
>
> if (is_cmd_mode) /* packet data type */
> reg =
> DSI_COMMAND_COMPRESSION_MODE_CTRL_STREAM0_DATATYPE(MIPI_DSI_DCS_LONG_WRITE);
> @@ -916,6 +909,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host
> *msm_host, bool is_cmd_mod
> static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool
> is_bonded_dsi)
> {
> struct drm_display_mode *mode = msm_host->mode;
> + struct drm_dsc_config *dsc = msm_host->dsc;
And here too. Please pull msm_host->dsc change to a separate patch.
> u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */
> u32 h_total = mode->htotal;
> u32 v_total = mode->vtotal;
> @@ -947,8 +941,7 @@ static void dsi_timing_setup(struct msm_dsi_host
> *msm_host, bool is_bonded_dsi)
> hdisplay /= 2;
> }
>
> - if (msm_host->dsc) {
> - struct drm_dsc_config *dsc = msm_host->dsc;
> + if (dsc) {
> u32 bytes_per_pclk;
>
> /* update dsc params with timing params */
> @@ -988,14 +981,14 @@ static void dsi_timing_setup(struct msm_dsi_host
> *msm_host, bool is_bonded_dsi)
> else
> bytes_per_pclk = 3;
>
> - hdisplay =
> DIV_ROUND_UP(msm_dsc_get_bytes_per_line(msm_host->dsc), bytes_per_pclk);
> + hdisplay = DIV_ROUND_UP(msm_dsc_get_bytes_per_line(dsc),
> bytes_per_pclk);
>
> h_total += hdisplay;
> ha_end = ha_start + hdisplay;
> }
>
> if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) {
> - if (msm_host->dsc)
> + if (dsc)
> dsi_update_dsc_timing(msm_host, false,
> mode->hdisplay);
>
> dsi_write(msm_host, REG_DSI_ACTIVE_H,
> @@ -1016,21 +1009,17 @@ static void dsi_timing_setup(struct msm_dsi_host
> *msm_host, bool is_bonded_dsi)
> DSI_ACTIVE_VSYNC_VPOS_START(vs_start) |
> DSI_ACTIVE_VSYNC_VPOS_END(vs_end));
> } else {/* command mode */
> - if (msm_host->dsc)
> + if (dsc)
> dsi_update_dsc_timing(msm_host, true, mode->hdisplay);
>
> /* image data and 1 byte write_memory_start cmd */
> - if (!msm_host->dsc)
> + if (!dsc)
> wc = hdisplay *
> mipi_dsi_pixel_format_to_bpp(msm_host->format) / 8 + 1;
> else
> /*
> * When DSC is enabled, WC = slice_chunk_size *
> slice_per_pkt + 1.
> -* Currently, the driver only supports default value
> of slice_per_pkt = 1
> -*
> -* TODO: Expand mipi_dsi_device struct to hold
> slice_per_pkt info
> -* and adjust DSC math to account for
> slice_per_pkt.
> */
> - wc = msm_host->dsc->slice_chunk_size + 1;
> + wc = dsc->slice_chunk_size * dsc->slice_per_pkt + 1;
>
> dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM0_CTRL,
> DSI_CMD_MDP_STREAM0_CTRL_WORD_COUNT(wc) |
> @@ -1657,8 +1646,12 @@ static int dsi_host_attach(struct mipi_dsi_host *host,
> msm_host->lanes = dsi->lanes;
> msm_host->format = dsi->format;
> msm_host->mode_flags = dsi->mode_flags;
>
[PATCH v3 6/6] drm/msm/dsi: support DSC configurations with slice_per_pkt > 1
From: Jonathan Marek
Support slice_per_pkt in msm driver.
Note that the removed "pkt_per_line = slice_per_intf * slice_per_pkt"
comment is incorrect.
Also trim the code to simplify the dsc reference.
Signed-off-by: Jonathan Marek
Signed-off-by: Jun Nie
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 35 ++-
1 file changed, 14 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c
b/drivers/gpu/drm/msm/dsi/dsi_host.c
index b0507a42ee6a..0c6f40dbd25c 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -866,17 +866,10 @@ static void dsi_update_dsc_timing(struct msm_dsi_host
*msm_host, bool is_cmd_mod
slice_per_intf = msm_dsc_get_slices_per_intf(dsc, hdisplay);
total_bytes_per_intf = dsc->slice_chunk_size * slice_per_intf;
- bytes_per_pkt = dsc->slice_chunk_size; /* * slice_per_pkt; */
-
+ bytes_per_pkt = dsc->slice_chunk_size * dsc->slice_per_pkt;
eol_byte_num = total_bytes_per_intf % 3;
- /*
-* Typically, pkt_per_line = slice_per_intf * slice_per_pkt.
-*
-* Since the current driver only supports slice_per_pkt = 1,
-* pkt_per_line will be equal to slice per intf for now.
-*/
- pkt_per_line = slice_per_intf;
+ pkt_per_line = slice_per_intf / dsc->slice_per_pkt;
if (is_cmd_mode) /* packet data type */
reg =
DSI_COMMAND_COMPRESSION_MODE_CTRL_STREAM0_DATATYPE(MIPI_DSI_DCS_LONG_WRITE);
@@ -916,6 +909,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host
*msm_host, bool is_cmd_mod
static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
{
struct drm_display_mode *mode = msm_host->mode;
+ struct drm_dsc_config *dsc = msm_host->dsc;
u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */
u32 h_total = mode->htotal;
u32 v_total = mode->vtotal;
@@ -947,8 +941,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host,
bool is_bonded_dsi)
hdisplay /= 2;
}
- if (msm_host->dsc) {
- struct drm_dsc_config *dsc = msm_host->dsc;
+ if (dsc) {
u32 bytes_per_pclk;
/* update dsc params with timing params */
@@ -988,14 +981,14 @@ static void dsi_timing_setup(struct msm_dsi_host
*msm_host, bool is_bonded_dsi)
else
bytes_per_pclk = 3;
- hdisplay =
DIV_ROUND_UP(msm_dsc_get_bytes_per_line(msm_host->dsc), bytes_per_pclk);
+ hdisplay = DIV_ROUND_UP(msm_dsc_get_bytes_per_line(dsc),
bytes_per_pclk);
h_total += hdisplay;
ha_end = ha_start + hdisplay;
}
if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) {
- if (msm_host->dsc)
+ if (dsc)
dsi_update_dsc_timing(msm_host, false, mode->hdisplay);
dsi_write(msm_host, REG_DSI_ACTIVE_H,
@@ -1016,21 +1009,17 @@ static void dsi_timing_setup(struct msm_dsi_host
*msm_host, bool is_bonded_dsi)
DSI_ACTIVE_VSYNC_VPOS_START(vs_start) |
DSI_ACTIVE_VSYNC_VPOS_END(vs_end));
} else {/* command mode */
- if (msm_host->dsc)
+ if (dsc)
dsi_update_dsc_timing(msm_host, true, mode->hdisplay);
/* image data and 1 byte write_memory_start cmd */
- if (!msm_host->dsc)
+ if (!dsc)
wc = hdisplay *
mipi_dsi_pixel_format_to_bpp(msm_host->format) / 8 + 1;
else
/*
* When DSC is enabled, WC = slice_chunk_size *
slice_per_pkt + 1.
-* Currently, the driver only supports default value of
slice_per_pkt = 1
-*
-* TODO: Expand mipi_dsi_device struct to hold
slice_per_pkt info
-* and adjust DSC math to account for
slice_per_pkt.
*/
- wc = msm_host->dsc->slice_chunk_size + 1;
+ wc = dsc->slice_chunk_size * dsc->slice_per_pkt + 1;
dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM0_CTRL,
DSI_CMD_MDP_STREAM0_CTRL_WORD_COUNT(wc) |
@@ -1657,8 +1646,12 @@ static int dsi_host_attach(struct mipi_dsi_host *host,
msm_host->lanes = dsi->lanes;
msm_host->format = dsi->format;
msm_host->mode_flags = dsi->mode_flags;
- if (dsi->dsc)
+ if (dsi->dsc) {
msm_host->dsc = dsi->dsc;
+ /* for backwards compatibility, assume 1 if not set */
+ if (!dsi->dsc->slice_per_pkt)
+ dsi->dsc->slice_per_pkt = 1;
+ }
/* Some gpios defined in panel DT need to be controlled by host */
ret =
