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From: Kishon Vijay Abraham I <kishon@ti.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 13/15] phy: Add driver for Exynos DP PHY
Date: Thu, 18 Jul 2013 06:58:22 +0000	[thread overview]
Message-ID: <1374129984-765-14-git-send-email-kishon@ti.com> (raw)
In-Reply-To: <1374129984-765-1-git-send-email-kishon@ti.com>

From: Jingoo Han <jg1.han@samsung.com>

Add a PHY provider driver for the Samsung Exynos SoC Display Port PHY.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 .../devicetree/bindings/phy/samsung-phy.txt        |    8 ++
 drivers/phy/Kconfig                                |    6 ++
 drivers/phy/Makefile                               |    1 +
 drivers/phy/phy-exynos-dp-video.c                  |  111 ++++++++++++++++++++
 4 files changed, 126 insertions(+)
 create mode 100644 drivers/phy/phy-exynos-dp-video.c

diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt
index 5ff208c..c0fccaa 100644
--- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
+++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
@@ -12,3 +12,11 @@ the PHY specifier identifies the PHY and its meaning is as follows:
   1 - MIPI DSIM 0,
   2 - MIPI CSIS 1,
   3 - MIPI DSIM 1.
+
+Samsung EXYNOS SoC series Display Port PHY
+-------------------------------------------------
+
+Required properties:
+- compatible : should be "samsung,exynos5250-dp-video-phy";
+- reg : offset and length of the Display Port PHY register set;
+- #phy-cells : from the generic PHY bindings, must be 0;
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 6f446d0..ed0b1b8 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -19,4 +19,10 @@ config PHY_EXYNOS_MIPI_VIDEO
 	help
 	  Support for MIPI CSI-2 and MIPI DSI DPHY found on Samsung
 	  S5P and EXYNOS SoCs.
+
+config PHY_EXYNOS_DP_VIDEO
+	tristate "EXYNOS SoC series Display Port PHY driver"
+	depends on OF
+	help
+	  Support for Display Port PHY found on Samsung EXYNOS SoCs.
 endif
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 71d8841..0fd1340 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -4,3 +4,4 @@
 
 obj-$(CONFIG_GENERIC_PHY)		+= phy-core.o
 obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO)	+= phy-exynos-mipi-video.o
+obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO)	+= phy-exynos-dp-video.o
diff --git a/drivers/phy/phy-exynos-dp-video.c b/drivers/phy/phy-exynos-dp-video.c
new file mode 100644
index 0000000..3c8e247
--- /dev/null
+++ b/drivers/phy/phy-exynos-dp-video.c
@@ -0,0 +1,111 @@
+/*
+ * Samsung EXYNOS SoC series Display Port PHY driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * 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
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+/* DPTX_PHY_CONTROL register */
+#define EXYNOS_DPTX_PHY_ENABLE		(1 << 0)
+
+struct exynos_dp_video_phy {
+	void __iomem *regs;
+};
+
+static int __set_phy_state(struct exynos_dp_video_phy *state, unsigned int on)
+{
+	u32 reg;
+
+	reg = readl(state->regs);
+	if (on)
+		reg |= EXYNOS_DPTX_PHY_ENABLE;
+	else
+		reg &= ~EXYNOS_DPTX_PHY_ENABLE;
+	writel(reg, state->regs);
+
+	return 0;
+}
+
+static int exynos_dp_video_phy_power_on(struct phy *phy)
+{
+	struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
+
+	return __set_phy_state(state, 1);
+}
+
+static int exynos_dp_video_phy_power_off(struct phy *phy)
+{
+	struct exynos_dp_video_phy *state = phy_get_drvdata(phy);
+
+	return __set_phy_state(state, 0);
+}
+
+static struct phy_ops exynos_dp_video_phy_ops = {
+	.power_on	= exynos_dp_video_phy_power_on,
+	.power_off	= exynos_dp_video_phy_power_off,
+	.owner		= THIS_MODULE,
+};
+
+static int exynos_dp_video_phy_probe(struct platform_device *pdev)
+{
+	struct exynos_dp_video_phy *state;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	struct phy_provider *phy_provider;
+	struct phy *phy;
+
+	state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
+	if (!state)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	state->regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(state->regs))
+		return PTR_ERR(state->regs);
+
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+	if (IS_ERR(phy_provider))
+		return PTR_ERR(phy_provider);
+
+	phy = devm_phy_create(dev, 0, &exynos_dp_video_phy_ops, NULL);
+	if (IS_ERR(phy)) {
+		dev_err(dev, "failed to create Display Port PHY\n");
+		return PTR_ERR(phy);
+	}
+	phy_set_drvdata(phy, state);
+
+	return 0;
+}
+
+static const struct of_device_id exynos_dp_video_phy_of_match[] = {
+	{ .compatible = "samsung,exynos5250-dp-video-phy" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, exynos_dp_video_phy_of_match);
+
+static struct platform_driver exynos_dp_video_phy_driver = {
+	.probe	= exynos_dp_video_phy_probe,
+	.driver = {
+		.name	= "exynos-dp-video-phy",
+		.owner	= THIS_MODULE,
+		.of_match_table	= exynos_dp_video_phy_of_match,
+	}
+};
+module_platform_driver(exynos_dp_video_phy_driver);
+
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_DESCRIPTION("Samsung EXYNOS SoC DP PHY driver");
+MODULE_LICENSE("GPL v2");
-- 
1.7.10.4


  parent reply	other threads:[~2013-07-18  6:58 UTC|newest]

Thread overview: 96+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-18  6:58 [PATCH 00/15] PHY framework Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 01/15] drivers: phy: add generic " Kishon Vijay Abraham I
2013-07-18  7:20   ` Greg KH
2013-07-18  9:11     ` Kishon Vijay Abraham I
2013-07-18 15:49       ` Greg KH
2013-07-19  5:49         ` Kishon Vijay Abraham I
2013-07-19  5:43           ` Greg KH
2013-07-19  5:56             ` Kishon Vijay Abraham I
2013-07-19  6:29               ` Greg KH
2013-07-19  6:48                 ` Kishon Vijay Abraham I
2013-07-19 15:54                   ` Stephen Warren
2013-07-20  3:27                     ` Kishon Vijay Abraham I
2013-07-19 23:50                   ` Greg KH
2013-07-20  3:31                     ` Kishon Vijay Abraham I
2013-07-20 22:00                       ` Greg KH
2013-07-21  2:32                         ` Alan Stern
2013-07-21  2:59                           ` Greg KH
2013-07-21 10:22                             ` Sascha Hauer
2013-07-21 15:48                               ` Greg KH
2013-07-21 17:14                                 ` Sylwester Nawrocki
2013-07-21 19:22                                   ` Alan Stern
2013-07-22  7:37                                     ` Kishon Vijay Abraham I
2013-07-22 14:44                                       ` Alan Stern
2013-07-23  5:59                                         ` Kishon Vijay Abraham I
2013-07-23  7:29                                         ` Tomasz Figa
2013-07-23  7:55                                           ` Tomasz Figa
2013-07-23 14:37                                             ` Alan Stern
2013-07-23 14:50                                               ` Tomasz Figa
2013-07-23 15:30                                               ` Kishon Vijay Abraham I
2013-07-23 16:18                                                 ` Greg KH
2013-07-23 16:40                                                   ` Kishon Vijay Abraham I
2013-07-23 16:35                                                     ` Greg KH
2013-07-23 16:50                                                   ` Tomasz Figa
2013-07-23 17:37                                                     ` Greg KH
2013-07-23 17:44                                                       ` Mark Brown
2013-07-23 18:01                                                         ` Greg KH
2013-07-23 19:31                                                           ` Mark Brown
2013-07-23 19:44                                                             ` Greg KH
2013-07-23 20:07                                                               ` Tomasz Figa
2013-07-23 20:50                                                                 ` Greg KH
2013-07-23 21:05                                                                   ` Tomasz Figa
2013-07-23 21:23                                                                     ` Greg KH
2013-07-23 23:48                                                               ` Mark Brown
2013-07-23 17:48                                                       ` Tomasz Figa
2013-07-23 18:04                                                         ` Greg KH
2013-07-23 20:46                                                           ` Tomasz Figa
2013-07-23 19:36                                                     ` Alan Stern
2013-07-23 20:20                                                       ` Tomasz Figa
2013-07-23 20:53                                                         ` Alan Stern
2013-07-23 21:02                                                           ` Tomasz Figa
2013-07-23 21:14                                                             ` Alan Stern
2013-07-23 21:31                                                               ` Tomasz Figa
2013-07-24 18:32                                                                 ` Arnd Bergmann
     [not found]                                                                   ` <51F0B373.5050907@ti.com>
2013-07-25  7:54                                                                     ` Arnd Bergmann
2013-07-25  9:29                                                                   ` Sylwester Nawrocki
2013-07-25  9:29                                                                   ` Mark Brown
2013-07-25 10:16                                                                   ` Laurent Pinchart
2013-07-25 11:00                                                                     ` Arnd Bergmann
2013-07-25 11:10                                                                       ` Laurent Pinchart
2013-07-25 12:09                                                                       ` Mark Brown
2013-07-23 17:34                                               ` Mark Brown
2013-07-22 15:04                                       ` Greg KH
2013-07-23  5:46                                         ` Kishon Vijay Abraham I
2013-07-21 10:31                             ` Tomasz Figa
2013-07-21 11:19                               ` Kishon Vijay Abraham I
2013-07-21 11:12                                 ` Tomasz Figa
2013-07-21 15:46                                   ` Greg KH
2013-07-30  7:11                                     ` Felipe Balbi
2013-07-31  5:56                                       ` Kishon Vijay Abraham I
2013-07-31  6:15                                         ` Felipe Balbi
2013-08-13 10:56                                           ` Kishon Vijay Abraham I
2013-08-13 11:37                                             ` Tomasz Figa
2013-08-13 12:17                                               ` Kishon Vijay Abraham I
2013-08-13 22:19                                                 ` Sylwester Nawrocki
2013-08-13 23:04                                                   ` Tomasz Figa
2013-08-14 15:17                                                     ` Kishon Vijay Abraham I
2013-08-19  5:40                                                       ` Kishon Vijay Abraham I
2013-08-20 12:26                                                         ` Felipe Balbi
2013-07-18  6:58 ` [PATCH 02/15] usb: phy: omap-usb2: use the new " Kishon Vijay Abraham I
2013-07-18  7:21   ` Greg KH
2013-07-18  9:12     ` Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 03/15] usb: phy: twl4030: " Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 04/15] ARM: OMAP: USB: Add phy binding information Kishon Vijay Abraham I
2013-07-18  7:02   ` Tony Lindgren
2013-07-18  6:58 ` [PATCH 05/15] ARM: dts: omap: update usb_otg_hs data Kishon Vijay Abraham I
2013-07-18  7:05   ` Tony Lindgren
2013-07-18  6:58 ` [PATCH 06/15] usb: musb: omap2430: use the new generic PHY framework Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 07/15] usb: phy: omap-usb2: remove *set_suspend* callback from omap-usb2 Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 08/15] usb: phy: twl4030-usb: remove *set_suspend* and *phy_init* ops Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 09/15] phy: Add driver for Exynos MIPI CSIS/DSIM DPHYs Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 10/15] video: exynos_mipi_dsim: Use the generic PHY driver Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 11/15] exynos4-is: Use the generic MIPI CSIS " Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 12/15] ARM: Samsung: Remove the MIPI PHY setup code Kishon Vijay Abraham I
2013-07-18  6:58 ` Kishon Vijay Abraham I [this message]
2013-07-18  6:58 ` [PATCH 14/15] video: exynos_dp: remove non-DT support for Exynos Display Port Kishon Vijay Abraham I
2013-07-18  6:58 ` [PATCH 15/15] video: exynos_dp: Use the generic PHY driver Kishon Vijay Abraham I

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