diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c index 4210f449553e..89558ccf79c8 100644 --- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c +++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c @@ -25,6 +25,7 @@ */ #include <linux/gpio/consumer.h> +#include <linux/gpio/machine.h> #include <linux/mfd/intel_soc_pmic.h> #include <linux/slab.h> @@ -686,8 +687,18 @@ bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id) /* * On some BYT/CHT devs some sequences are incomplete and we need to manually - * control some GPIOs. + * control some GPIOs. We need to add a GPIO lookup table before we get these. */ +static struct gpiod_lookup_table pmic_panel_gpio_table = { + /* Intel GFX is consumer */ + .dev_id = "0000:00:02.0", + .table = { + /* Panel EN/DISABLE */ + GPIO_LOOKUP("gpio_crystalcove", 94, "panel", GPIO_ACTIVE_HIGH), + { } + }, +}; + void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on) { struct drm_device *dev = intel_dsi->base.base.dev; @@ -697,6 +708,8 @@ void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on) if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) && mipi_config->pwm_blc == PPS_BLC_PMIC) { + gpiod_add_lookup_table(&pmic_panel_gpio_table); + intel_dsi->gpio_panel = gpiod_get(dev->dev, "panel", flags); if (IS_ERR(intel_dsi->gpio_panel)) { DRM_ERROR("Failed to own gpio for panel control\n"); @@ -707,8 +720,16 @@ void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on) void intel_dsi_vbt_gpio_cleanup(struct intel_dsi *intel_dsi) { + struct drm_device *dev = intel_dsi->base.base.dev; + struct drm_i915_private *dev_priv = to_i915(dev); + struct mipi_config *mipi_config = dev_priv->vbt.dsi.config; + if (intel_dsi->gpio_panel) { gpiod_put(intel_dsi->gpio_panel); intel_dsi->gpio_panel = NULL; } + + if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) && + mipi_config->pwm_blc == PPS_BLC_PMIC) + gpiod_remove_lookup_table(&pmic_panel_gpio_table); } |