Platform drivers need to be aware if a mipi dsi device attaches or
detaches. Add host_ops to the driver_data for attach and detach
callbacks and move the i80 mode selection and the hotplug handling into
the callback, because these depend on the drm driver.
Signed-off-by: Michael Tretter <m.tret...@pengutronix.de>
---
v2:
- new patch
---
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 64 ++++++++++++++++++++-----
1 file changed, 53 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 1a15ae71205d..684a2fbef08a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -239,6 +239,12 @@ struct exynos_dsi_transfer {
#define DSIM_STATE_CMD_LPM BIT(2)
#define DSIM_STATE_VIDOUT_AVAILABLE BIT(3)
+struct exynos_dsi;
+struct exynos_dsi_host_ops {
+ int (*attach)(struct device *dev, struct mipi_dsi_device *device);
+ int (*detach)(struct device *dev, struct mipi_dsi_device *device);
+};
+
enum exynos_reg_offset {
EXYNOS_REG_OFS,
EXYNOS5433_REG_OFS
@@ -254,6 +260,7 @@ struct exynos_dsi_driver_data {
unsigned int wait_for_reset;
unsigned int num_bits_resol;
const unsigned int *reg_values;
+ const struct exynos_dsi_host_ops *host_ops;
};
struct exynos_dsi {
@@ -467,6 +474,41 @@ static const unsigned int exynos5433_reg_values[] = {
[PHYTIMING_HS_TRAIL] = 0x0c,
};
+static int __exynos_dsi_host_attach(struct device *dev,
+ struct mipi_dsi_device *device)
+{
+ struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct drm_device *drm = dsi->encoder.dev;
+ struct exynos_drm_crtc *crtc;
+
+ mutex_lock(&drm->mode_config.mutex);
+ crtc = exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD);
+ crtc->i80_mode = !(device->mode_flags & MIPI_DSI_MODE_VIDEO);
+ mutex_unlock(&drm->mode_config.mutex);
+
+ if (drm->mode_config.poll_enabled)
+ drm_kms_helper_hotplug_event(drm);
+
+ return 0;
+}
+
+static int __exynos_dsi_host_detach(struct device *dev,
+ struct mipi_dsi_device *device)
+{
+ struct exynos_dsi *dsi = dev_get_drvdata(dev);
+ struct drm_device *drm = dsi->encoder.dev;
+
+ if (drm->mode_config.poll_enabled)
+ drm_kms_helper_hotplug_event(drm);
+
+ return 0;
+}
+
+static const struct exynos_dsi_host_ops exynos_dsi_host_ops = {
+ .attach = __exynos_dsi_host_attach,
+ .detach = __exynos_dsi_host_detach,
+};
+
static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = {
.reg_ofs = EXYNOS_REG_OFS,
.plltmr_reg = 0x50,
@@ -477,6 +519,7 @@ static const struct exynos_dsi_driver_data
exynos3_dsi_driver_data = {
.wait_for_reset = 1,
.num_bits_resol = 11,
.reg_values = reg_values,
+ .host_ops = &exynos_dsi_host_ops,
};
static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = {
@@ -489,6 +532,7 @@ static const struct exynos_dsi_driver_data
exynos4_dsi_driver_data = {
.wait_for_reset = 1,
.num_bits_resol = 11,
.reg_values = reg_values,
+ .host_ops = &exynos_dsi_host_ops,
};
static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = {
@@ -499,6 +543,7 @@ static const struct exynos_dsi_driver_data
exynos5_dsi_driver_data = {
.wait_for_reset = 1,
.num_bits_resol = 11,
.reg_values = reg_values,
+ .host_ops = &exynos_dsi_host_ops,
};
static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
@@ -510,6 +555,7 @@ static const struct exynos_dsi_driver_data
exynos5433_dsi_driver_data = {
.wait_for_reset = 0,
.num_bits_resol = 12,
.reg_values = exynos5433_reg_values,
+ .host_ops = &exynos_dsi_host_ops,
};
static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
@@ -521,6 +567,7 @@ static const struct exynos_dsi_driver_data
exynos5422_dsi_driver_data = {
.wait_for_reset = 1,
.num_bits_resol = 12,
.reg_values = exynos5422_reg_values,
+ .host_ops = &exynos_dsi_host_ops,
};
static const struct of_device_id exynos_dsi_of_match[] = {
@@ -1551,8 +1598,8 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host
*host,
struct mipi_dsi_device *device)
{
struct exynos_dsi *dsi = host_to_dsi(host);
+ const struct exynos_dsi_host_ops *ops = dsi->driver_data->host_ops;
struct drm_encoder *encoder = &dsi->encoder;
- struct drm_device *drm = encoder->dev;
struct drm_bridge *out_bridge;
out_bridge = of_drm_find_bridge(device->dev.of_node);
@@ -1590,18 +1637,12 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host
*host,
return ret;
}
- mutex_lock(&drm->mode_config.mutex);
-
dsi->lanes = device->lanes;
dsi->format = device->format;
dsi->mode_flags = device->mode_flags;
- exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD)->i80_mode =
- !(dsi->mode_flags & MIPI_DSI_MODE_VIDEO);
- mutex_unlock(&drm->mode_config.mutex);
-
- if (drm->mode_config.poll_enabled)
- drm_kms_helper_hotplug_event(drm);
+ if (ops && ops->attach)
+ ops->attach(dsi->dsi_host.dev, device);
return 0;
}
@@ -1610,6 +1651,7 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host
*host,
struct mipi_dsi_device *device)
{
struct exynos_dsi *dsi = host_to_dsi(host);
+ const struct exynos_dsi_host_ops *ops = dsi->driver_data->host_ops;
struct drm_device *drm = dsi->encoder.dev;
if (dsi->panel) {
@@ -1625,8 +1667,8 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host
*host,
INIT_LIST_HEAD(&dsi->bridge_chain);
}
- if (drm->mode_config.poll_enabled)
- drm_kms_helper_hotplug_event(drm);
+ if (ops && ops->detach)
+ ops->detach(dsi->dsi_host.dev, device);
exynos_dsi_unregister_te_irq(dsi);
--
2.20.1
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