A small step moving us closer to DRM MIPI DSI code. Use enum
mipi_dsi_pixel_format instead of our own. The first benefit is being
able to use common mipi_dsi_pixel_format_to_bpp().
There's a little back and forth conversion with the VBT -> enum ->
register, since we have just shoved the VBT value into the register
directly. Longer term, all the VBT parsing and deciphering should be
done in intel_bios.c, and abstracted there.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dsi.c | 19 +++++++++++++++-
drivers/gpu/drm/i915/intel_dsi.h | 8 +++++--
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 36 +++++++++++++++++++++---------
drivers/gpu/drm/i915/intel_dsi_pll.c | 30 +++++--------------------
4 files changed, 54 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 91cef3525c93..83f18791c009 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -840,6 +840,23 @@ static void set_dsi_timings(struct drm_encoder *encoder,
}
}
+static u32 pixel_format_to_reg(enum mipi_dsi_pixel_format fmt)
+{
+ switch (fmt) {
+ case MIPI_DSI_FMT_RGB888:
+ return VID_MODE_FORMAT_RGB888;
+ case MIPI_DSI_FMT_RGB666:
+ return VID_MODE_FORMAT_RGB666;
+ case MIPI_DSI_FMT_RGB666_PACKED:
+ return VID_MODE_FORMAT_RGB666_PACKED;
+ case MIPI_DSI_FMT_RGB565:
+ return VID_MODE_FORMAT_RGB565;
+ default:
+ MISSING_CASE(fmt);
+ return VID_MODE_FORMAT_RGB666;
+ }
+}
+
static void intel_dsi_prepare(struct intel_encoder *intel_encoder)
{
struct drm_encoder *encoder = &intel_encoder->base;
@@ -910,7 +927,7 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder)
val |= intel_dsi->channel << VID_MODE_CHANNEL_NUMBER_SHIFT;
/* XXX: cross-check bpp vs. pixel format? */
- val |= intel_dsi->pixel_format;
+ val |= pixel_format_to_reg(intel_dsi->pixel_format);
}
tmp = 0;
diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index de7be7f3fb42..54f072cd78f1 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -62,8 +62,12 @@ struct intel_dsi {
/* number of DSI lanes */
unsigned int lane_count;
- /* video mode pixel format for MIPI_DSI_FUNC_PRG register */
- u32 pixel_format;
+ /*
+ * video mode pixel format
+ *
+ * XXX: consolidate on .format in struct mipi_dsi_device.
+ */
+ enum mipi_dsi_pixel_format pixel_format;
/* video mode format for MIPI_VIDEO_MODE_FORMAT register */
u32 video_mode_format;
diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index 3f4b9712bffd..9a963fa3491c 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -392,6 +392,25 @@ static const struct drm_panel_funcs vbt_panel_funcs = {
.get_modes = vbt_panel_get_modes,
};
+/* XXX: This should be done when parsing the VBT in intel_bios.c */
+static enum mipi_dsi_pixel_format pixel_format_from_vbt(u32 fmt)
+{
+ /* It just so happens the VBT matches register contents. */
+ switch (fmt) {
+ case VID_MODE_FORMAT_RGB888:
+ return MIPI_DSI_FMT_RGB888;
+ case VID_MODE_FORMAT_RGB666:
+ return MIPI_DSI_FMT_RGB666;
+ case VID_MODE_FORMAT_RGB666_PACKED:
+ return MIPI_DSI_FMT_RGB666_PACKED;
+ case VID_MODE_FORMAT_RGB565:
+ return MIPI_DSI_FMT_RGB565;
+ default:
+ MISSING_CASE(fmt);
+ return MIPI_DSI_FMT_RGB666;
+ }
+}
+
struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
{
struct drm_device *dev = intel_dsi->base.base.dev;
@@ -400,7 +419,7 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
struct mipi_pps_data *pps = dev_priv->vbt.dsi.pps;
struct drm_display_mode *mode = dev_priv->vbt.lfp_lvds_vbt_mode;
struct vbt_panel *vbt_panel;
- u32 bits_per_pixel = 24;
+ u32 bpp;
u32 tlpx_ns, extra_byte_count, bitrate, tlpx_ui;
u32 ui_num, ui_den;
u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt;
@@ -416,15 +435,11 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
intel_dsi->eotp_pkt = mipi_config->eot_pkt_disabled ? 0 : 1;
intel_dsi->clock_stop = mipi_config->enable_clk_stop ? 1 : 0;
intel_dsi->lane_count = mipi_config->lane_cnt + 1;
- intel_dsi->pixel_format = mipi_config->videomode_color_format << 7;
+ intel_dsi->pixel_format = pixel_format_from_vbt(mipi_config->videomode_color_format << 7);
+ bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
+
intel_dsi->dual_link = mipi_config->dual_link;
intel_dsi->pixel_overlap = mipi_config->pixel_overlap;
-
- if (intel_dsi->pixel_format == VID_MODE_FORMAT_RGB666_PACKED)
- bits_per_pixel = 18;
- else if (intel_dsi->pixel_format == VID_MODE_FORMAT_RGB565)
- bits_per_pixel = 16;
-
intel_dsi->operation_mode = mipi_config->is_cmd_mode;
intel_dsi->video_mode_format = mipi_config->video_transfer_mode;
intel_dsi->escape_clk_div = mipi_config->byte_clk_sel;
@@ -458,8 +473,7 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
*/
if (intel_dsi->video_mode_format == VIDEO_MODE_BURST) {
if (mipi_config->target_burst_mode_freq) {
- computed_ddr =
- (pclk * bits_per_pixel) / intel_dsi->lane_count;
+ computed_ddr = (pclk * bpp) / intel_dsi->lane_count;
if (mipi_config->target_burst_mode_freq <
computed_ddr) {
@@ -482,7 +496,7 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
intel_dsi->burst_mode_ratio = burst_mode_ratio;
intel_dsi->pclk = pclk;
- bitrate = (pclk * bits_per_pixel) / intel_dsi->lane_count;
+ bitrate = (pclk * bpp) / intel_dsi->lane_count;
switch (intel_dsi->escape_clk_div) {
case 0:
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
index f70df2b42b23..5991c0520611 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -30,27 +30,6 @@
#include "i915_drv.h"
#include "intel_dsi.h"
-static int dsi_pixel_format_bpp(int pixel_format)
-{
- int bpp;
-
- switch (pixel_format) {
- default:
- case VID_MODE_FORMAT_RGB888:
- case VID_MODE_FORMAT_RGB666:
- bpp = 24;
- break;
- case VID_MODE_FORMAT_RGB666_PACKED:
- bpp = 18;
- break;
- case VID_MODE_FORMAT_RGB565:
- bpp = 16;
- break;
- }
-
- return bpp;
-}
-
struct dsi_mnp {
u32 dsi_pll_ctrl;
u32 dsi_pll_div;
@@ -64,10 +43,11 @@ static const u32 lfsr_converts[] = {
};
/* Get DSI clock from pixel clock */
-static u32 dsi_clk_from_pclk(u32 pclk, int pixel_format, int lane_count)
+static u32 dsi_clk_from_pclk(u32 pclk, enum mipi_dsi_pixel_format fmt,
+ int lane_count)
{
u32 dsi_clk_khz;
- u32 bpp = dsi_pixel_format_bpp(pixel_format);
+ u32 bpp = mipi_dsi_pixel_format_to_bpp(fmt);
/* DSI data rate = pixel clock * bits per pixel / lane count
pixel clock is converted from KHz to Hz */
@@ -232,9 +212,9 @@ static void bxt_disable_dsi_pll(struct intel_encoder *encoder)
DRM_ERROR("Timeout waiting for PLL lock deassertion\n");
}
-static void assert_bpp_mismatch(int pixel_format, int pipe_bpp)
+static void assert_bpp_mismatch(enum mipi_dsi_pixel_format fmt, int pipe_bpp)
{
- int bpp = dsi_pixel_format_bpp(pixel_format);
+ int bpp = mipi_dsi_pixel_format_to_bpp(fmt);
WARN(bpp != pipe_bpp,
"bpp match assertion failure (expected %d, current %d)\n",
--
2.1.4
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