[PATCH v3 25/41] drm: renesas: shmobile: Move interface handling to connector setup
Geert Uytterhoeven
geert+renesas at glider.be
Wed Aug 16 09:50:32 UTC 2023
Move legacy interface handling to the connector setup code.
Set up bus_flags and bus_formats in display_info according to the
bus format and panel information from platform data, to make it more
similar with DT-based connector/bridge/panel setup.
This will allow us to use the same LCD interface setup code for both
legacy and DT-based systems.
Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
v3:
- No changes,
v2:
- Drop superfluous blank lines,
- Keep initialization of info fields together,
- Use shmob_drm_bus_fmts[],
- Keep bus format validation at probe time.
---
.../gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 118 +++++++++++++++---
.../gpu/drm/renesas/shmobile/shmob_drm_drv.c | 34 -----
.../gpu/drm/renesas/shmobile/shmob_drm_drv.h | 3 +-
3 files changed, 104 insertions(+), 51 deletions(-)
diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
index b3ef10b7828de197..caafd04acd3d46d0 100644
--- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
+++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
@@ -8,6 +8,7 @@
*/
#include <linux/clk.h>
+#include <linux/media-bus-format.h>
#include <linux/pm_runtime.h>
#include <drm/drm_crtc.h>
@@ -39,20 +40,55 @@
* CRTC
*/
+static const struct {
+ u32 fmt;
+ u32 ldmt1r;
+} shmob_drm_bus_fmts[] = {
+ { MEDIA_BUS_FMT_RGB888_3X8, LDMT1R_MIFTYP_RGB8 },
+ { MEDIA_BUS_FMT_RGB666_2X9_BE, LDMT1R_MIFTYP_RGB9 },
+ { MEDIA_BUS_FMT_RGB888_2X12_BE, LDMT1R_MIFTYP_RGB12A },
+ { MEDIA_BUS_FMT_RGB444_1X12, LDMT1R_MIFTYP_RGB12B },
+ { MEDIA_BUS_FMT_RGB565_1X16, LDMT1R_MIFTYP_RGB16 },
+ { MEDIA_BUS_FMT_RGB666_1X18, LDMT1R_MIFTYP_RGB18 },
+ { MEDIA_BUS_FMT_RGB888_1X24, LDMT1R_MIFTYP_RGB24 },
+ { MEDIA_BUS_FMT_UYVY8_1X16, LDMT1R_MIFTYP_YCBCR },
+};
+
static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
{
struct drm_crtc *crtc = &scrtc->crtc;
struct shmob_drm_device *sdev = to_shmob_device(crtc->dev);
- enum display_flags dpy_flags = sdev->connector.mode->flags;
+ const struct drm_display_info *info = &sdev->connector->display_info;
const struct drm_display_mode *mode = &crtc->mode;
+ unsigned int i;
u32 value;
- value = sdev->ldmt1r
- | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
- | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
- | ((dpy_flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) ? LDMT1R_DWPOL : 0)
- | ((dpy_flags & DISPLAY_FLAGS_DE_LOW) ? LDMT1R_DIPOL : 0);
+ if (!info->num_bus_formats || !info->bus_formats) {
+ dev_warn(sdev->dev, "No bus format reported, using RGB888\n");
+ value = LDMT1R_MIFTYP_RGB24;
+ } else {
+ for (i = 0; i < ARRAY_SIZE(shmob_drm_bus_fmts); i++) {
+ if (shmob_drm_bus_fmts[i].fmt == info->bus_formats[0])
+ break;
+ }
+ if (i < ARRAY_SIZE(shmob_drm_bus_fmts)) {
+ value = shmob_drm_bus_fmts[i].ldmt1r;
+ } else {
+ dev_warn(sdev->dev,
+ "unsupported bus format 0x%x, using RGB888\n",
+ info->bus_formats[0]);
+ value = LDMT1R_MIFTYP_RGB24;
+ }
+ }
+ if (info->bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE)
+ value |= LDMT1R_DWPOL;
+ if (info->bus_flags & DRM_BUS_FLAG_DE_LOW)
+ value |= LDMT1R_DIPOL;
+ if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+ value |= LDMT1R_VPOL;
+ if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+ value |= LDMT1R_HPOL;
lcdc_write(sdev, LDMT1R, value);
value = ((mode->hdisplay / 8) << 16) /* HDCN */
@@ -479,7 +515,7 @@ static bool shmob_drm_encoder_mode_fixup(struct drm_encoder *encoder,
{
struct drm_device *dev = encoder->dev;
struct shmob_drm_device *sdev = to_shmob_device(dev);
- struct drm_connector *connector = &sdev->connector.connector;
+ struct drm_connector *connector = sdev->connector;
const struct drm_display_mode *panel_mode;
if (list_empty(&connector->modes)) {
@@ -581,6 +617,8 @@ static void shmob_drm_connector_destroy(struct drm_connector *connector)
{
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
+
+ kfree(connector);
}
static const struct drm_connector_funcs connector_funcs = {
@@ -589,26 +627,74 @@ static const struct drm_connector_funcs connector_funcs = {
.destroy = shmob_drm_connector_destroy,
};
-int shmob_drm_connector_create(struct shmob_drm_device *sdev,
- struct drm_encoder *encoder)
+static struct drm_connector *
+shmob_drm_connector_init(struct shmob_drm_device *sdev,
+ struct drm_encoder *encoder)
{
- struct shmob_drm_connector *scon = &sdev->connector;
- struct drm_connector *connector = &scon->connector;
+ u32 bus_fmt = sdev->pdata->iface.bus_fmt;
+ struct shmob_drm_connector *scon;
+ struct drm_connector *connector;
+ struct drm_display_info *info;
+ unsigned int i;
int ret;
+ for (i = 0; i < ARRAY_SIZE(shmob_drm_bus_fmts); i++) {
+ if (shmob_drm_bus_fmts[i].fmt == bus_fmt)
+ break;
+ }
+ if (i == ARRAY_SIZE(shmob_drm_bus_fmts)) {
+ dev_err(sdev->dev, "unsupported bus format 0x%x\n", bus_fmt);
+ return ERR_PTR(-EINVAL);
+ }
+
+ scon = kzalloc(sizeof(*scon), GFP_KERNEL);
+ if (!scon)
+ return ERR_PTR(-ENOMEM);
+
+ connector = &scon->connector;
scon->encoder = encoder;
scon->mode = &sdev->pdata->panel.mode;
- connector->display_info.width_mm = sdev->pdata->panel.width_mm;
- connector->display_info.height_mm = sdev->pdata->panel.height_mm;
+ info = &connector->display_info;
+ info->width_mm = sdev->pdata->panel.width_mm;
+ info->height_mm = sdev->pdata->panel.height_mm;
+
+ if (scon->mode->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE)
+ info->bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE;
+ if (scon->mode->flags & DISPLAY_FLAGS_DE_LOW)
+ info->bus_flags |= DRM_BUS_FLAG_DE_LOW;
+
+ ret = drm_display_info_set_bus_formats(info, &bus_fmt, 1);
+ if (ret < 0) {
+ kfree(scon);
+ return ERR_PTR(ret);
+ }
ret = drm_connector_init(&sdev->ddev, connector, &connector_funcs,
DRM_MODE_CONNECTOR_DPI);
- if (ret < 0)
- return ret;
+ if (ret < 0) {
+ kfree(scon);
+ return ERR_PTR(ret);
+ }
drm_connector_helper_add(connector, &connector_helper_funcs);
+ return connector;
+}
+
+int shmob_drm_connector_create(struct shmob_drm_device *sdev,
+ struct drm_encoder *encoder)
+{
+ struct drm_connector *connector;
+ int ret;
+
+ connector = shmob_drm_connector_init(sdev, encoder);
+ if (IS_ERR(connector)) {
+ dev_err(sdev->dev, "failed to created connector: %pe\n",
+ connector);
+ return PTR_ERR(connector);
+ }
+
ret = drm_connector_attach_encoder(connector, encoder);
if (ret < 0)
goto error;
@@ -617,6 +703,8 @@ int shmob_drm_connector_create(struct shmob_drm_device *sdev,
drm_object_property_set_value(&connector->base,
sdev->ddev.mode_config.dpms_property, DRM_MODE_DPMS_OFF);
+ sdev->connector = connector;
+
return 0;
error:
diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
index 08b254f0f2874786..8da3054f26b2d235 100644
--- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
@@ -9,7 +9,6 @@
#include <linux/clk.h>
#include <linux/io.h>
-#include <linux/media-bus-format.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/platform_device.h>
@@ -33,35 +32,6 @@
* Hardware initialization
*/
-static int shmob_drm_init_interface(struct shmob_drm_device *sdev)
-{
- static const struct {
- u32 fmt;
- u32 ldmt1r;
- } bus_fmts[] = {
- { MEDIA_BUS_FMT_RGB888_3X8, LDMT1R_MIFTYP_RGB8 },
- { MEDIA_BUS_FMT_RGB666_2X9_BE, LDMT1R_MIFTYP_RGB9 },
- { MEDIA_BUS_FMT_RGB888_2X12_BE, LDMT1R_MIFTYP_RGB12A },
- { MEDIA_BUS_FMT_RGB444_1X12, LDMT1R_MIFTYP_RGB12B },
- { MEDIA_BUS_FMT_RGB565_1X16, LDMT1R_MIFTYP_RGB16 },
- { MEDIA_BUS_FMT_RGB666_1X18, LDMT1R_MIFTYP_RGB18 },
- { MEDIA_BUS_FMT_RGB888_1X24, LDMT1R_MIFTYP_RGB24 },
- { MEDIA_BUS_FMT_UYVY8_1X16, LDMT1R_MIFTYP_YCBCR },
- };
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(bus_fmts); i++) {
- if (bus_fmts[i].fmt == sdev->pdata->iface.bus_fmt) {
- sdev->ldmt1r = bus_fmts[i].ldmt1r;
- return 0;
- }
- }
-
- dev_err(sdev->dev, "unsupported bus format 0x%x\n",
- sdev->pdata->iface.bus_fmt);
- return -EINVAL;
-}
-
static int shmob_drm_setup_clocks(struct shmob_drm_device *sdev,
enum shmob_drm_clk_source clksrc)
{
@@ -247,10 +217,6 @@ static int shmob_drm_probe(struct platform_device *pdev)
if (ret)
return ret;
- ret = shmob_drm_init_interface(sdev);
- if (ret < 0)
- return ret;
-
ret = shmob_drm_modeset_init(sdev);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret,
diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.h b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.h
index 5e55ba7a207865bd..18907e5ace51c681 100644
--- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.h
+++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.h
@@ -27,7 +27,6 @@ struct shmob_drm_device {
void __iomem *mmio;
struct clk *clock;
u32 lddckr;
- u32 ldmt1r;
unsigned int irq;
spinlock_t irq_lock; /* Protects hardware LDINTR register */
@@ -36,7 +35,7 @@ struct shmob_drm_device {
struct shmob_drm_crtc crtc;
struct drm_encoder encoder;
- struct shmob_drm_connector connector;
+ struct drm_connector *connector;
};
static inline struct shmob_drm_device *to_shmob_device(struct drm_device *dev)
--
2.34.1
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