From: Manikandan Muralidharan <manikandan.m@microchip.com>
To: <sam@ravnborg.org>, <bbrezillon@kernel.org>, <airlied@gmail.com>,
<daniel@ffwll.ch>, <nicolas.ferre@microchip.com>,
<alexandre.belloni@bootlin.com>, <lee@kernel.org>,
<dri-devel@lists.freedesktop.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Cc: Balakrishnan.S@microchip.com, Nayabbasha.Sayed@microchip.com,
Balamanikandan.Gunasundar@microchip.com,
Manikandan Muralidharan <manikandan.m@microchip.com>,
Varshini.Rajendran@microchip.com, Dharma.B@microchip.com,
Durai Manickam KR <durai.manickamkr@microchip.com>,
Hari.PrasathGE@microchip.com
Subject: [PATCH v7 5/7] drm: atmel-hlcdc: add DPI mode support for XLCDC
Date: Thu, 5 Oct 2023 14:59:52 +0530 [thread overview]
Message-ID: <20231005092954.881059-6-manikandan.m@microchip.com> (raw)
In-Reply-To: <20231005092954.881059-1-manikandan.m@microchip.com>
Add support for Display Pixel Interface (DPI) Compatible Mode
support in atmel-hlcdc driver for XLCDC IP along with legacy
pixel mapping. DPI mode BIT is configured in LCDC_CFG5 register.
Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
[durai.manickamkr@microchip.com: update DPI mode bit using is_xlcdc flag]
Signed-off-by: Durai Manickam KR <durai.manickamkr@microchip.com>
---
.../gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 21 +++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index 1ac31c0c474a..1899be2eb6a3 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -30,10 +30,12 @@
*
* @base: base CRTC state
* @output_mode: RGBXXX output mode
+ * @dpi: output DPI mode
*/
struct atmel_hlcdc_crtc_state {
struct drm_crtc_state base;
unsigned int output_mode;
+ u8 dpi;
};
static inline struct atmel_hlcdc_crtc_state *
@@ -164,6 +166,8 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
state = drm_crtc_state_to_atmel_hlcdc_crtc_state(c->state);
cfg = state->output_mode << 8;
+ if (is_xlcdc)
+ cfg |= state->dpi << 11;
if (!is_xlcdc && (adj->flags & DRM_MODE_FLAG_NVSYNC))
cfg |= ATMEL_HLCDC_VSPOL;
@@ -176,7 +180,9 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
ATMEL_HLCDC_VSPDLYS | ATMEL_HLCDC_VSPDLYE |
ATMEL_HLCDC_DISPPOL | ATMEL_HLCDC_DISPDLY |
ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO |
- ATMEL_HLCDC_GUARDTIME_MASK | ATMEL_HLCDC_MODE_MASK,
+ ATMEL_HLCDC_GUARDTIME_MASK |
+ (is_xlcdc ? ATMEL_XLCDC_MODE_MASK |
+ ATMEL_XLCDC_DPI : ATMEL_HLCDC_MODE_MASK),
cfg);
clk_disable_unprepare(crtc->dc->hlcdc->sys_clk);
@@ -374,7 +380,15 @@ 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) {
+ /* check if MIPI DPI bit needs to be set */
+ if (fls(output_fmts) > 3) {
+ hstate->output_mode -= 4;
+ hstate->dpi = 1;
+ } else {
+ hstate->dpi = 0;
+ }
+ }
return 0;
}
@@ -478,6 +492,7 @@ static struct drm_crtc_state *
atmel_hlcdc_crtc_duplicate_state(struct drm_crtc *crtc)
{
struct atmel_hlcdc_crtc_state *state, *cur;
+ struct atmel_hlcdc_crtc *c = drm_crtc_to_atmel_hlcdc_crtc(crtc);
if (WARN_ON(!crtc->state))
return NULL;
@@ -489,6 +504,8 @@ atmel_hlcdc_crtc_duplicate_state(struct drm_crtc *crtc)
cur = drm_crtc_state_to_atmel_hlcdc_crtc_state(crtc->state);
state->output_mode = cur->output_mode;
+ if (c->dc->desc->is_xlcdc)
+ state->dpi = cur->dpi;
return &state->base;
}
--
2.25.1
next prev parent reply other threads:[~2023-10-05 9:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-05 9:29 [PATCH v7 0/7] Add support for XLCDC to sam9x7 SoC family Manikandan Muralidharan
2023-10-05 9:29 ` [PATCH v7 1/7] drm: atmel-hlcdc: add flag and driver ops to differentiate XLCDC and HLCDC IP Manikandan Muralidharan
2023-10-20 3:40 ` Hari.PrasathGE
2023-10-05 9:29 ` [PATCH v7 2/7] drm: atmel-hlcdc: add LCD controller layer definition for sam9x75 Manikandan Muralidharan
2023-10-05 9:29 ` [PATCH v7 3/7] drm: atmel-hlcdc: Define SAM9X7 SoC XLCDC specific registers Manikandan Muralidharan
2023-10-05 9:29 ` [PATCH v7 4/7] drm: atmel_hlcdc: Add support for XLCDC in atmel LCD driver Manikandan Muralidharan
2023-10-05 9:29 ` Manikandan Muralidharan [this message]
2023-10-05 9:29 ` [PATCH v7 6/7] drm: atmel-hlcdc: add vertical and horizontal scaling support for XLCDC Manikandan Muralidharan
2023-10-05 9:29 ` [PATCH v7 7/7] drm: atmel-hlcdc: add support for DSI output formats Manikandan Muralidharan
2023-10-18 9:26 ` [PATCH v7 0/7] Add support for XLCDC to sam9x7 SoC family Manikandan.M
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