linux-kernel - [PATCH 3/3] drm/tegra: sor: change io pad power state using new pmc api

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Date:   Thu, 2 Aug 2018 17:29:03 +0530
From:   Venkat Reddy Talla <vreddytalla@...dia.com>
To:     <airlied@...ux.ie>, <dri-devel@...ts.freedesktop.org>,
        <jonathanh@...dia.com>, <pdeschrijver@...dia.com>,
        <vivek.gautam@...eaurora.org>, <p.zabel@...gutronix.de>,
        <thierry.reding@...il.com>, <mperttunen@...dia.com>,
        <mark.rutland@....com>, <robh+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <avienamo@...dia.com>, <talho@...dia.com>, <ldewangan@...dia.com>,
        <vreddytalla@...dia.com>
Subject: [PATCH 3/3] drm/tegra: sor: change io pad power state using new pmc api

Added support in PMC driver to configure the power state and voltage level
of the IO pads from client driver via pincontrol framework, because of this
tegra_io_pad_power_disable() and tegra_io_pad_power_enable() deprecated,
to change power state of SOR io pads using new pmc apis.

Signed-off-by: Venkat Reddy Talla <vreddytalla@...dia.com>
---
 drivers/gpu/drm/tegra/sor.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index d7fe9f1..6ede923 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 NVIDIA Corporation
+ * Copyright (C) 2013-2018, NVIDIA Corporation.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -342,7 +342,6 @@ struct tegra_sor {
 	struct drm_info_list *debugfs_files;
 
 	const struct tegra_sor_ops *ops;
-	enum tegra_io_pad pad;
 
 	/* for HDMI 2.0 */
 	struct tegra_sor_hdmi_settings *settings;
@@ -1547,7 +1546,7 @@ static void tegra_sor_edp_disable(struct drm_encoder *encoder)
 			dev_err(sor->dev, "failed to disable DP: %d\n", err);
 	}
 
-	err = tegra_io_pad_power_disable(sor->pad);
+	err = tegra_io_rail_power_off(TEGRA_IO_RAIL_LVDS);
 	if (err < 0)
 		dev_err(sor->dev, "failed to power off I/O pad: %d\n", err);
 
@@ -1707,7 +1706,7 @@ static void tegra_sor_edp_enable(struct drm_encoder *encoder)
 	tegra_sor_writel(sor, value, sor->soc->regs->dp_padctl0);
 
 	/* step 2 */
-	err = tegra_io_pad_power_enable(sor->pad);
+	err = tegra_io_rail_power_on(TEGRA_IO_RAIL_LVDS);
 	if (err < 0)
 		dev_err(sor->dev, "failed to power on I/O pad: %d\n", err);
 
@@ -2189,7 +2188,7 @@ static void tegra_sor_hdmi_disable(struct drm_encoder *encoder)
 	if (err < 0)
 		dev_err(sor->dev, "failed to power down SOR: %d\n", err);
 
-	err = tegra_io_pad_power_disable(sor->pad);
+	err = tegra_io_rail_power_off(TEGRA_IO_RAIL_HDMI);
 	if (err < 0)
 		dev_err(sor->dev, "failed to power off I/O pad: %d\n", err);
 
@@ -2225,7 +2224,7 @@ static void tegra_sor_hdmi_enable(struct drm_encoder *encoder)
 
 	div = clk_get_rate(sor->clk) / 1000000 * 4;
 
-	err = tegra_io_pad_power_enable(sor->pad);
+	err = tegra_io_rail_power_on(TEGRA_IO_RAIL_HDMI);
 	if (err < 0)
 		dev_err(sor->dev, "failed to power on I/O pad: %d\n", err);
 
@@ -2921,7 +2920,6 @@ static int tegra_sor_parse_dt(struct tegra_sor *sor)
 		 * override the default that we already set for Tegra210 and
 		 * earlier
 		 */
-		sor->pad = TEGRA_IO_PAD_HDMI_DP0 + sor->index;
 	}
 
 	return 0;
@@ -2962,7 +2960,6 @@ static int tegra_sor_probe(struct platform_device *pdev)
 	if (!sor->aux) {
 		if (sor->soc->supports_hdmi) {
 			sor->ops = &tegra_sor_hdmi_ops;
-			sor->pad = TEGRA_IO_PAD_HDMI;
 		} else if (sor->soc->supports_lvds) {
 			dev_err(&pdev->dev, "LVDS not supported yet\n");
 			return -ENODEV;
@@ -2973,7 +2970,6 @@ static int tegra_sor_probe(struct platform_device *pdev)
 	} else {
 		if (sor->soc->supports_edp) {
 			sor->ops = &tegra_sor_edp_ops;
-			sor->pad = TEGRA_IO_PAD_LVDS;
 		} else if (sor->soc->supports_dp) {
 			dev_err(&pdev->dev, "DisplayPort not supported yet\n");
 			return -ENODEV;
-- 
2.1.4