diff options
| -rw-r--r-- | drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c index 0ded72ed2fcd..ebc9a3bd6db3 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -118,6 +118,9 @@ struct st7789_panel_info { u32 bus_format; u32 bus_flags; bool invert_mode; + bool partial_mode; + u16 partial_start; + u16 partial_end; }; struct st7789v { @@ -345,9 +348,14 @@ static enum drm_panel_orientation st7789v_get_orientation(struct drm_panel *p) static int st7789v_prepare(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); - u8 pixel_fmt, polarity; + u8 mode, pixel_fmt, polarity; int ret; + if (!ctx->info->partial_mode) + mode = ST7789V_RGBCTRL_WO; + else + mode = 0; + switch (ctx->info->bus_format) { case MEDIA_BUS_FMT_RGB666_1X18: pixel_fmt = MIPI_DCS_PIXEL_FMT_18BIT; @@ -487,6 +495,37 @@ static int st7789v_prepare(struct drm_panel *panel) MIPI_DCS_EXIT_INVERT_MODE)); } + if (ctx->info->partial_mode) { + u8 area_data[4] = { + (ctx->info->partial_start >> 8) & 0xff, + (ctx->info->partial_start >> 0) & 0xff, + ((ctx->info->partial_end - 1) >> 8) & 0xff, + ((ctx->info->partial_end - 1) >> 0) & 0xff, + }; + + /* Caution: if userspace ever pushes a mode different from the + * expected one (i.e., the one advertised by get_modes), we'll + * add margins. + */ + + ST7789V_TEST(ret, st7789v_write_command( + ctx, MIPI_DCS_ENTER_PARTIAL_MODE)); + + ST7789V_TEST(ret, st7789v_write_command( + ctx, MIPI_DCS_SET_PAGE_ADDRESS)); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[0])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[1])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[2])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[3])); + + ST7789V_TEST(ret, st7789v_write_command( + ctx, MIPI_DCS_SET_PARTIAL_ROWS)); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[0])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[1])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[2])); + ST7789V_TEST(ret, st7789v_write_data(ctx, area_data[3])); + } + ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RAMCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RAMCTRL_DM_RGB | ST7789V_RAMCTRL_RM_RGB)); @@ -494,7 +533,7 @@ static int st7789v_prepare(struct drm_panel *panel) ST7789V_RAMCTRL_MAGIC)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_RGBCTRL_CMD)); - ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_WO | + ST7789V_TEST(ret, st7789v_write_data(ctx, mode | ST7789V_RGBCTRL_RCM(2) | polarity)); ST7789V_TEST(ret, st7789v_write_data(ctx, ST7789V_RGBCTRL_VBP(8))); |