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Commit 7f471ee8 authored by Joonyoung Shim's avatar Joonyoung Shim Committed by Kukjin Kim
Browse files

ARM: S5PV210: Add usb otg phy control 



This patch supports to control usb otg phy of S5PV210. Based on
setup-usb-phy.c of S3C64XX.

Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
[Test HW: GONI S5PC110]
Tested-by: default avatarLukasz Majewski <l.majewski@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 99f6e1f5

arch/arm/mach-s5pv210/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -65,6 +65,11 @@ config S5PV210_SETUP_SPI 
	help

	  Common setup code for SPI GPIO configurations.



config S5PV210_SETUP_USB_PHY

	bool

	help

	  Common setup code for USB PHY controller



menu "S5PC110 Machines"



config MACH_AQUILA
@@ -107,6 +112,7 @@ config MACH_GONI 
	select S5PV210_SETUP_KEYPAD

	select S5PV210_SETUP_SDHCI

	select S5PV210_SETUP_FIMC

	select S5PV210_SETUP_USB_PHY

	help

	  Machine support for Samsung GONI board

	  S5PC110(MCP) is one of package option of S5PV210

arch/arm/mach-s5pv210/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -39,3 +39,4 @@ obj-$(CONFIG_S5PV210_SETUP_IDE) += setup-ide.o 
obj-$(CONFIG_S5PV210_SETUP_KEYPAD)	+= setup-keypad.o

obj-$(CONFIG_S5PV210_SETUP_SDHCI_GPIO)	+= setup-sdhci-gpio.o

obj-$(CONFIG_S5PV210_SETUP_SPI)		+= setup-spi.o

obj-$(CONFIG_S5PV210_SETUP_USB_PHY) += setup-usb-phy.o

arch/arm/mach-s5pv210/include/mach/regs-sys.h

+0 −4
Original line number Diff line number Diff line
@@ -13,7 +13,3 @@ 
#define S5PV210_USB_PHY_CON	(S3C_VA_SYS + 0xE80C)

#define S5PV210_USB_PHY0_EN	(1 << 0)

#define S5PV210_USB_PHY1_EN	(1 << 1)
 


/* compatibility defines for s3c-hsotg driver */

#define S3C64XX_OTHERS		S5PV210_USB_PHY_CON

#define S3C64XX_OTHERS_USBMASK	S5PV210_USB_PHY0_EN

arch/arm/mach-s5pv210/setup-usb-phy.c

0 → 100644
+90 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2012 Samsung Electronics Co.Ltd

 * Author: Joonyoung Shim <jy0922.shim@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 Foundationr

 */



#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/err.h>

#include <linux/io.h>

#include <linux/platform_device.h>

#include <mach/map.h>

#include <mach/regs-sys.h>

#include <plat/cpu.h>

#include <plat/regs-usb-hsotg-phy.h>

#include <plat/usb-phy.h>



static int s5pv210_usb_otgphy_init(struct platform_device *pdev)

{

	struct clk *xusbxti;

	u32 phyclk;



	writel(readl(S5PV210_USB_PHY_CON) | S5PV210_USB_PHY0_EN,

			S5PV210_USB_PHY_CON);



	/* set clock frequency for PLL */

	phyclk = readl(S3C_PHYCLK) & ~S3C_PHYCLK_CLKSEL_MASK;



	xusbxti = clk_get(&pdev->dev, "xusbxti");

	if (xusbxti && !IS_ERR(xusbxti)) {

		switch (clk_get_rate(xusbxti)) {

		case 12 * MHZ:

			phyclk |= S3C_PHYCLK_CLKSEL_12M;

			break;

		case 24 * MHZ:

			phyclk |= S3C_PHYCLK_CLKSEL_24M;

			break;

		default:

		case 48 * MHZ:

			/* default reference clock */

			break;

		}

		clk_put(xusbxti);

	}



	/* TODO: select external clock/oscillator */

	writel(phyclk | S3C_PHYCLK_CLK_FORCE, S3C_PHYCLK);



	/* set to normal OTG PHY */

	writel((readl(S3C_PHYPWR) & ~S3C_PHYPWR_NORMAL_MASK), S3C_PHYPWR);

	mdelay(1);



	/* reset OTG PHY and Link */

	writel(S3C_RSTCON_PHY | S3C_RSTCON_HCLK | S3C_RSTCON_PHYCLK,

			S3C_RSTCON);

	udelay(20);	/* at-least 10uS */

	writel(0, S3C_RSTCON);



	return 0;

}



static int s5pv210_usb_otgphy_exit(struct platform_device *pdev)

{

	writel((readl(S3C_PHYPWR) | S3C_PHYPWR_ANALOG_POWERDOWN |

				S3C_PHYPWR_OTG_DISABLE), S3C_PHYPWR);



	writel(readl(S5PV210_USB_PHY_CON) & ~S5PV210_USB_PHY0_EN,

			S5PV210_USB_PHY_CON);



	return 0;

}



int s5p_usb_phy_init(struct platform_device *pdev, int type)

{

	if (type == S5P_USB_PHY_DEVICE)

		return s5pv210_usb_otgphy_init(pdev);



	return -EINVAL;

}



int s5p_usb_phy_exit(struct platform_device *pdev, int type)

{

	if (type == S5P_USB_PHY_DEVICE)

		return s5pv210_usb_otgphy_exit(pdev);



	return -EINVAL;

}