[PATCH v7 7/7] drm: atmel-hlcdc: add support for DSI output formats
From: Manikandan Muralidharan
Date: Thu Oct 05 2023 - 10:41:17 EST
Add support for the following DPI mode if the encoder type
is DSI as per the XLCDC IP datasheet:
- 16BPPCFG1
- 16BPPCFG2
- 16BPPCFG3
- 18BPPCFG1
- 18BPPCFG2
- 24BPP
Signed-off-by: Manikandan Muralidharan <manikandan.m@xxxxxxxxxxxxx>
[durai.manickamkr@xxxxxxxxxxxxx: update output format using is_xlcdc flag]
Signed-off-by: Durai Manickam KR <durai.manickamkr@xxxxxxxxxxxxx>
---
.../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 123 +++++++++++++-----
1 file changed, 88 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index 1899be2eb6a3..6f529769b036 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -295,11 +295,18 @@ static void atmel_hlcdc_crtc_atomic_enable(struct drm_crtc *c,
}
-#define ATMEL_HLCDC_RGB444_OUTPUT BIT(0)
-#define ATMEL_HLCDC_RGB565_OUTPUT BIT(1)
-#define ATMEL_HLCDC_RGB666_OUTPUT BIT(2)
-#define ATMEL_HLCDC_RGB888_OUTPUT BIT(3)
-#define ATMEL_HLCDC_OUTPUT_MODE_MASK GENMASK(3, 0)
+#define ATMEL_HLCDC_RGB444_OUTPUT BIT(0)
+#define ATMEL_HLCDC_RGB565_OUTPUT BIT(1)
+#define ATMEL_HLCDC_RGB666_OUTPUT BIT(2)
+#define ATMEL_HLCDC_RGB888_OUTPUT BIT(3)
+#define ATMEL_HLCDC_DPI_RGB565C1_OUTPUT BIT(4)
+#define ATMEL_HLCDC_DPI_RGB565C2_OUTPUT BIT(5)
+#define ATMEL_HLCDC_DPI_RGB565C3_OUTPUT BIT(6)
+#define ATMEL_HLCDC_DPI_RGB666C1_OUTPUT BIT(7)
+#define ATMEL_HLCDC_DPI_RGB666C2_OUTPUT BIT(8)
+#define ATMEL_HLCDC_DPI_RGB888_OUTPUT BIT(9)
+#define ATMEL_HLCDC_OUTPUT_MODE_MASK GENMASK(3, 0)
+#define ATMEL_XLCDC_OUTPUT_MODE_MASK GENMASK(9, 0)
static int atmel_hlcdc_connector_output_mode(struct drm_connector_state *state)
{
@@ -313,53 +320,99 @@ static int atmel_hlcdc_connector_output_mode(struct drm_connector_state *state)
if (!encoder)
encoder = connector->encoder;
- switch (atmel_hlcdc_encoder_get_bus_fmt(encoder)) {
- case 0:
- break;
- case MEDIA_BUS_FMT_RGB444_1X12:
- return ATMEL_HLCDC_RGB444_OUTPUT;
- case MEDIA_BUS_FMT_RGB565_1X16:
- return ATMEL_HLCDC_RGB565_OUTPUT;
- case MEDIA_BUS_FMT_RGB666_1X18:
- return ATMEL_HLCDC_RGB666_OUTPUT;
- case MEDIA_BUS_FMT_RGB888_1X24:
- return ATMEL_HLCDC_RGB888_OUTPUT;
- default:
- return -EINVAL;
- }
-
- for (j = 0; j < info->num_bus_formats; j++) {
- switch (info->bus_formats[j]) {
- case MEDIA_BUS_FMT_RGB444_1X12:
- supported_fmts |= ATMEL_HLCDC_RGB444_OUTPUT;
+ if (encoder->encoder_type == DRM_MODE_ENCODER_DSI) {
+ /*
+ * atmel-hlcdc to support DSI formats with DSI video pipeline
+ * when DRM_MODE_ENCODER_DSI type is set by
+ * connector driver component.
+ */
+ switch (atmel_hlcdc_encoder_get_bus_fmt(encoder)) {
+ case 0:
break;
case MEDIA_BUS_FMT_RGB565_1X16:
- supported_fmts |= ATMEL_HLCDC_RGB565_OUTPUT;
- break;
+ return ATMEL_HLCDC_DPI_RGB565C1_OUTPUT;
case MEDIA_BUS_FMT_RGB666_1X18:
- supported_fmts |= ATMEL_HLCDC_RGB666_OUTPUT;
- break;
+ return ATMEL_HLCDC_DPI_RGB666C1_OUTPUT;
+ case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
+ return ATMEL_HLCDC_DPI_RGB666C2_OUTPUT;
case MEDIA_BUS_FMT_RGB888_1X24:
- supported_fmts |= ATMEL_HLCDC_RGB888_OUTPUT;
- break;
+ return ATMEL_HLCDC_DPI_RGB888_OUTPUT;
default:
+ return -EINVAL;
+ }
+
+ for (j = 0; j < info->num_bus_formats; j++) {
+ switch (info->bus_formats[j]) {
+ case MEDIA_BUS_FMT_RGB565_1X16:
+ supported_fmts |=
+ ATMEL_HLCDC_DPI_RGB565C1_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB666_1X18:
+ supported_fmts |=
+ ATMEL_HLCDC_DPI_RGB666C1_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB666_1X24_CPADHI:
+ supported_fmts |=
+ ATMEL_HLCDC_DPI_RGB666C2_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ supported_fmts |=
+ ATMEL_HLCDC_DPI_RGB888_OUTPUT;
+ break;
+ default:
+ break;
+ }
+ }
+ } else {
+ switch (atmel_hlcdc_encoder_get_bus_fmt(encoder)) {
+ case 0:
break;
+ case MEDIA_BUS_FMT_RGB444_1X12:
+ return ATMEL_HLCDC_RGB444_OUTPUT;
+ case MEDIA_BUS_FMT_RGB565_1X16:
+ return ATMEL_HLCDC_RGB565_OUTPUT;
+ case MEDIA_BUS_FMT_RGB666_1X18:
+ return ATMEL_HLCDC_RGB666_OUTPUT;
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ return ATMEL_HLCDC_RGB888_OUTPUT;
+ default:
+ return -EINVAL;
}
- }
+ for (j = 0; j < info->num_bus_formats; j++) {
+ switch (info->bus_formats[j]) {
+ case MEDIA_BUS_FMT_RGB444_1X12:
+ supported_fmts |= ATMEL_HLCDC_RGB444_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB565_1X16:
+ supported_fmts |= ATMEL_HLCDC_RGB565_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB666_1X18:
+ supported_fmts |= ATMEL_HLCDC_RGB666_OUTPUT;
+ break;
+ case MEDIA_BUS_FMT_RGB888_1X24:
+ supported_fmts |= ATMEL_HLCDC_RGB888_OUTPUT;
+ break;
+ default:
+ break;
+ }
+ }
+ }
return supported_fmts;
}
static int atmel_hlcdc_crtc_select_output_mode(struct drm_crtc_state *state)
{
- unsigned int output_fmts = ATMEL_HLCDC_OUTPUT_MODE_MASK;
+ unsigned int output_fmts;
struct atmel_hlcdc_crtc_state *hstate;
struct drm_connector_state *cstate;
struct drm_connector *connector;
- struct atmel_hlcdc_crtc *crtc;
+ struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(state->crtc);
int i;
+ bool is_xlcdc = crtc->dc->desc->is_xlcdc;
- crtc = drm_crtc_to_atmel_hlcdc_crtc(state->crtc);
+ output_fmts = is_xlcdc ? ATMEL_XLCDC_OUTPUT_MODE_MASK :
+ ATMEL_HLCDC_OUTPUT_MODE_MASK;
for_each_new_connector_in_state(state->state, connector, cstate, i) {
unsigned int supported_fmts = 0;
@@ -380,7 +433,7 @@ static int atmel_hlcdc_crtc_select_output_mode(struct drm_crtc_state *state)
hstate = drm_crtc_state_to_atmel_hlcdc_crtc_state(state);
hstate->output_mode = fls(output_fmts) - 1;
- if (crtc->dc->desc->is_xlcdc) {
+ if (is_xlcdc) {
/* check if MIPI DPI bit needs to be set */
if (fls(output_fmts) > 3) {
hstate->output_mode -= 4;
--
2.25.1