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Fri, 25 Aug 2023 05:55:44 -0700 From: Manikandan Muralidharan To: , , , , , , , , , CC: , , , , , , , Manikandan Muralidharan , Durai Manickam KR Subject: [PATCH v4 8/8] drm: atmel-hlcdc: add support for DSI output formats Date: Fri, 25 Aug 2023 18:24:44 +0530 Message-ID: <20230825125444.93222-9-manikandan.m@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230825125444.93222-1-manikandan.m@microchip.com> References: <20230825125444.93222-1-manikandan.m@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 [durai.manickamkr@microchip.com: update output format using is_xlcdc flag] Signed-off-by: Durai Manickam KR --- .../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 123 +++++++++++++----- 1 file changed, 89 insertions(+), 34 deletions(-) diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/d= rm/atmel-hlcdc/atmel_hlcdc_crtc.c index c3d0c60ba419..0d10f84c82d8 100644 --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c @@ -287,11 +287,18 @@ static void atmel_hlcdc_crtc_atomic_enable(struct drm= _crtc *c, =20 } =20 -#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) =20 static int atmel_hlcdc_connector_output_mode(struct drm_connector_state *s= tate) { @@ -305,37 +312,83 @@ static int atmel_hlcdc_connector_output_mode(struct d= rm_connector_state *state) if (!encoder) encoder =3D connector->encoder; =20 - 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 =3D 0; j < info->num_bus_formats; j++) { - switch (info->bus_formats[j]) { - case MEDIA_BUS_FMT_RGB444_1X12: - supported_fmts |=3D ATMEL_HLCDC_RGB444_OUTPUT; + if (encoder->encoder_type =3D=3D 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 |=3D ATMEL_HLCDC_RGB565_OUTPUT; - break; + return ATMEL_HLCDC_DPI_RGB565C1_OUTPUT; case MEDIA_BUS_FMT_RGB666_1X18: - supported_fmts |=3D 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 |=3D ATMEL_HLCDC_RGB888_OUTPUT; - break; + return ATMEL_HLCDC_DPI_RGB888_OUTPUT; default: + return -EINVAL; + } + + for (j =3D 0; j < info->num_bus_formats; j++) { + switch (info->bus_formats[j]) { + case MEDIA_BUS_FMT_RGB565_1X16: + supported_fmts |=3D + ATMEL_HLCDC_DPI_RGB565C1_OUTPUT; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + supported_fmts |=3D + ATMEL_HLCDC_DPI_RGB666C1_OUTPUT; + break; + case MEDIA_BUS_FMT_RGB666_1X24_CPADHI: + supported_fmts |=3D + ATMEL_HLCDC_DPI_RGB666C2_OUTPUT; + break; + case MEDIA_BUS_FMT_RGB888_1X24: + supported_fmts |=3D + 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 =3D 0; j < info->num_bus_formats; j++) { + switch (info->bus_formats[j]) { + case MEDIA_BUS_FMT_RGB444_1X12: + supported_fmts |=3D ATMEL_HLCDC_RGB444_OUTPUT; + break; + case MEDIA_BUS_FMT_RGB565_1X16: + supported_fmts |=3D ATMEL_HLCDC_RGB565_OUTPUT; + break; + case MEDIA_BUS_FMT_RGB666_1X18: + supported_fmts |=3D ATMEL_HLCDC_RGB666_OUTPUT; + break; + case MEDIA_BUS_FMT_RGB888_1X24: + supported_fmts |=3D ATMEL_HLCDC_RGB888_OUTPUT; + break; + default: + break; + } } } =20 @@ -344,14 +397,16 @@ static int atmel_hlcdc_connector_output_mode(struct d= rm_connector_state *state) =20 static int atmel_hlcdc_crtc_select_output_mode(struct drm_crtc_state *stat= e) { - unsigned int output_fmts =3D 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 =3D drm_crtc_to_atmel_hlcdc_crtc(state->crt= c); int i; + bool is_xlcdc =3D crtc->dc->desc->is_xlcdc; =20 - crtc =3D drm_crtc_to_atmel_hlcdc_crtc(state->crtc); + output_fmts =3D is_xlcdc ? ATMEL_XLCDC_OUTPUT_MODE_MASK : + ATMEL_HLCDC_OUTPUT_MODE_MASK; =20 for_each_new_connector_in_state(state->state, connector, cstate, i) { unsigned int supported_fmts =3D 0; @@ -372,7 +427,7 @@ static int atmel_hlcdc_crtc_select_output_mode(struct d= rm_crtc_state *state) =20 hstate =3D drm_crtc_state_to_atmel_hlcdc_crtc_state(state); hstate->output_mode =3D 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 -=3D 4; --=20 2.25.1