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authorHans de Goede <hdegoede@redhat.com>2019-12-16 21:51:20 +0100
committerHans de Goede <hdegoede@redhat.com>2020-01-03 11:46:59 +0100
commit6c0a878ebaa43fc9d8d84ac4eacce9f6a9b974ac (patch)
tree99af3fc7667664beacb3e1e4dbb77f6bb241f63e /drivers/mfd/intel_soc_pmic_core.c
parentea0fe6725141788ec0bb5a1bcb68d136cb5c6970 (diff)
drm/i915/dsi: Init panel-enable GPIO to low when the LCD is initially off (v2)
When the LCD has not been turned on by the firmware/GOP, because e.g. the device was booted with an external monitor connected over HDMI, we should not turn on the panel-enable GPIO when we request it. Turning on the panel-enable GPIO when we request it, means we turn it on too early in the init-sequence, which causes some panels to not correctly light up. This commits adds a panel_is_on parameter to intel_dsi_vbt_gpio_init() and makes intel_dsi_vbt_gpio_init() set the initial GPIO value accordingly. This fixes the panel not lighting up on a Thundersoft TST168 tablet when booted with an external monitor connected over HDMI. Changes in v2: - Call intel_dsi_get_hw_state() to check if the panel is on instead of relying on the current_mode pointer Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191216205122.1850923-4-hdegoede@redhat.com
Diffstat (limited to 'drivers/mfd/intel_soc_pmic_core.c')
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