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

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commit 22ca0d4991169b76e753d767a45f1105c356bbb8 upstream.

Set the CHV_GPIO_GPIOEN bit when updating GPIOs from chv_exec_gpio.

Fixes: a0a6d4ffd2ad ("drm/i915/dsi: add support for gpio elements on CHV")
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 b2b45fcd921e864a5e9bbc7aa55dee96d5e11c06)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede 2016-12-01 21:29:09 +01:00 committed by Greg Kroah-Hartman
parent 2037b1b46c
commit 6cb4179f97
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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@ -296,7 +296,8 @@ 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);
}