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drm/i915/dsi: Fix chv_exec_gpio disabling the GPIOs it is setting

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Set the CHV_GPIO_GPIOEN bit when updating GPIOs from chv_exec_gpio.

Fixes: a0a6d4ffd2 ("drm/i915/dsi: add support for gpio elements on CHV")
Cc: stable@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161201202925.12220-3-hdegoede@redhat.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit b2b45fcd92)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Hans de Goede 2016-12-01 21:29:09 +01:00 committed by Jani Nikula
parent 25e23bc57e
commit 22ca0d4991
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
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@ -300,7 +300,8 @@ static void chv_exec_gpio(struct drm_i915_private *dev_priv,
mutex_lock(&dev_priv->sb_lock);
vlv_iosf_sb_write(dev_priv, port, cfg1, 0);
vlv_iosf_sb_write(dev_priv, port, cfg0,
CHV_GPIO_GPIOCFG_GPO | CHV_GPIO_GPIOTXSTATE(value));
CHV_GPIO_GPIOEN | CHV_GPIO_GPIOCFG_GPO |
CHV_GPIO_GPIOTXSTATE(value));
mutex_unlock(&dev_priv->sb_lock);
}