linux-kernel - [RFC][PATCH 4/5 v2] drm/bridge: adv7511: Rework adv7511_power_on/off() so they can be reused internally

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Message-Id: <1480395884-5471-5-git-send-email-john.stultz@linaro.org>
Date:   Mon, 28 Nov 2016 21:04:43 -0800
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        David Airlie <airlied@...ux.ie>,
        Archit Taneja <architt@...eaurora.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel@...ts.freedesktop.org
Subject: [RFC][PATCH 4/5 v2] drm/bridge: adv7511: Rework adv7511_power_on/off() so they can be reused internally

In chasing down issues with EDID probing, I found some
duplicated but incomplete logic used to power the chip on and
off.

This patch refactors the adv7511_power_on/off functions, so
they can be used for internal needs.

Cc: David Airlie <airlied@...ux.ie>
Cc: Archit Taneja <architt@...eaurora.org>
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: Lars-Peter Clausen <lars@...afoo.de>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: dri-devel@...ts.freedesktop.org
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
v2: Split into two patches to make change more clear

 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 9f8dffd..1948968 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -325,7 +325,7 @@ static void adv7511_set_link_config(struct adv7511 *adv7511,
 	adv7511->rgb = config->input_colorspace == HDMI_COLORSPACE_RGB;
 }
 
-static void adv7511_power_on(struct adv7511 *adv7511)
+static void __adv7511_power_on(struct adv7511 *adv7511)
 {
 	adv7511->current_edid_segment = -1;
 
@@ -359,24 +359,30 @@ static void adv7511_power_on(struct adv7511 *adv7511)
 	 * Most of the registers are reset during power down or when HPD is low.
 	 */
 	regcache_sync(adv7511->regmap);
+}
 
+static void adv7511_power_on(struct adv7511 *adv7511)
+{
+	__adv7511_power_on(adv7511);
 	if (adv7511->type == ADV7533)
 		adv7533_dsi_power_on(adv7511);
-
 	adv7511->powered = true;
 }
 
-static void adv7511_power_off(struct adv7511 *adv7511)
+static void __adv7511_power_off(struct adv7511 *adv7511)
 {
 	/* TODO: setup additional power down modes */
 	regmap_update_bits(adv7511->regmap, ADV7511_REG_POWER,
 			   ADV7511_POWER_POWER_DOWN,
 			   ADV7511_POWER_POWER_DOWN);
 	regcache_mark_dirty(adv7511->regmap);
+}
 
+static void adv7511_power_off(struct adv7511 *adv7511)
+{
+	__adv7511_power_off(adv7511);
 	if (adv7511->type == ADV7533)
 		adv7533_dsi_power_off(adv7511);
-
 	adv7511->powered = false;
 }
 
-- 
2.7.4