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disp: msm: dsi: add widebus support for DSI

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From Lahaina onwards, for compressed DSI output, widebus should be enabled.
In widebus mode, 6 bytes of data are transmitted per pclk.
For uncompressed output, widebus must be disabled to transmit 3 bytes
of uncompressed data per pclk.

Change-Id: I7fc0bdb2e1678152d57b4cbb8295063a2ba8ae73
Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>
This commit is contained in:
Rajkumar Subbiah
2020-03-03 17:34:20 -05:00
parent c0d4857a81
commit 56e041919c
10 changed files with 96 additions and 25 deletions
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16
msm/dsi/dsi_defs.h
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@@ -16,6 +16,8 @@
#define DSI_V_TOTAL(t) (((t)->v_active) + ((t)->v_back_porch) + \
((t)->v_sync_width) + ((t)->v_front_porch))
#define DSI_H_SCALE(h, s) (DIV_ROUND_UP((h) * (s)->numer, (s)->denom))
#define DSI_DEBUG_NAME_LEN 32
#define display_for_each_ctrl(index, display) \
for (index = 0; (index < (display)->ctrl_count) &&\
@@ -398,6 +400,7 @@ struct dsi_panel_cmd_set {
* @vdc_enabled: VDC compression enabled.
* @dsc: DSC compression configuration.
* @vdc: VDC compression configuration.
* @pclk_scale: pclk scale factor, target bpp to source bpp
* @roi_caps: Panel ROI capabilities.
*/
struct dsi_mode_info {
@@ -423,6 +426,7 @@ struct dsi_mode_info {
bool vdc_enabled;
struct msm_display_dsc_info *dsc;
struct msm_display_vdc_info *vdc;
struct msm_ratio pclk_scale;
struct msm_roi_caps roi_caps;
};
@@ -585,7 +589,9 @@ struct dsi_host_config {
* @vdc: VDC compression info
* @dsc_enabled: DSC compression enabled
* @vdc_enabled: VDC compression enabled
* @pclk_scale: pclk scale factor, target bpp to source bpp
* @roi_caps: Panel ROI capabilities
* @widebus_support 48 bit wide data bus is supported by hw
*/
struct dsi_display_mode_priv_info {
struct dsi_panel_cmd_set cmd_sets[DSI_CMD_SET_MAX];
@@ -606,7 +612,9 @@ struct dsi_display_mode_priv_info {
struct msm_display_vdc_info vdc;
bool dsc_enabled;
bool vdc_enabled;
struct msm_ratio pclk_scale;
struct msm_roi_caps roi_caps;
bool widebus_support;
};
/**
@@ -738,8 +746,12 @@ static inline u64 dsi_h_active_dce(struct dsi_mode_info *mode)
static inline u64 dsi_h_total_dce(struct dsi_mode_info *mode)
{
return dsi_h_active_dce(mode) + mode->h_back_porch +
mode->h_sync_width + mode->h_front_porch;
u64 h_total = dsi_h_active_dce(mode);
h_total += DSI_H_SCALE(mode->h_back_porch, &mode->pclk_scale) +
DSI_H_SCALE(mode->h_front_porch, &mode->pclk_scale) +
DSI_H_SCALE(mode->h_sync_width, &mode->pclk_scale);
return h_total;
}
#endif /* _DSI_DEFS_H_ */