From c3e3a072e258d3ec913b40af1af9d56c853945e0 Mon Sep 17 00:00:00 2001 From: Michael Tretter Date: Fri, 11 Sep 2020 15:54:05 +0200 Subject: drm/exynos: add host_ops callback for platform drivers 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 --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 64 +++++++++++++++++++++++++++------ 1 file changed, 53 insertions(+), 11 deletions(-) (limited to 'drivers/gpu/drm/exynos/exynos_drm_dsi.c') diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index d411aab116c7..3b2a3111c63f 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[] = { @@ -1550,8 +1597,8 @@ 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); @@ -1589,18 +1636,12 @@ 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; } @@ -1609,6 +1650,7 @@ 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) { @@ -1624,8 +1666,8 @@ 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); -- cgit v1.2.3