ARM: S3C64XX: Add usb otg phy control

This patch supports to control usb otg phy of S3C64XX. Currently, the
driver for usb otg controls usb otg phy but it can be removed by this
patch.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[Rebased on the newest git/kgene/linux-samsung #for-next]
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Mark Brown<broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index dd20c66cd700b1a9739509245e92a6f91426a31f..326ea3a98725abe0bfb5b5f98510b3ed74877b64 100644 (file)
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -83,6 +83,11 @@ config S3C64XX_SETUP_SPI
        help
         Common setup code for SPI GPIO configurations
 
+config S3C64XX_SETUP_USB_PHY
+       bool
+       help
+         Common setup code for USB PHY controller
+
 # S36400 Macchine support
 
 config MACH_SMDK6400
@@ -157,6 +162,7 @@ config MACH_SMDK6410
        select S3C64XX_SETUP_IDE
        select S3C64XX_SETUP_FB_24BPP
        select S3C64XX_SETUP_KEYPAD
+       select S3C64XX_SETUP_USB_PHY
        help
          Machine support for the Samsung SMDK6410
 
@@ -256,6 +262,7 @@ config MACH_SMARTQ
        select S3C_DEV_USB_HOST
        select S3C64XX_SETUP_SDHCI
        select S3C64XX_SETUP_FB_24BPP
+       select S3C64XX_SETUP_USB_PHY
        select SAMSUNG_DEV_ADC
        select SAMSUNG_DEV_PWM
        select SAMSUNG_DEV_TS
@@ -283,6 +290,7 @@ config MACH_WLF_CRAGG_6410
        select S3C64XX_SETUP_FB_24BPP
        select S3C64XX_SETUP_KEYPAD
        select S3C64XX_SETUP_SPI
+       select S3C64XX_SETUP_USB_PHY
        select SAMSUNG_DEV_ADC
        select SAMSUNG_DEV_KEYPAD
        select S3C_DEV_USB_HOST

diff --git a/arch/arm/mach-s3c64xx/Makefile b/arch/arm/mach-s3c64xx/Makefile
index 610fe2807ed7576c4972cf775e2d4bc9888ca4da..f9ce1dc28ce47692881233333ed472e4de8557a3 100644 (file)
--- a/arch/arm/mach-s3c64xx/Makefile
+++ b/arch/arm/mach-s3c64xx/Makefile
@@ -43,6 +43,7 @@ obj-$(CONFIG_S3C64XX_SETUP_IDE)               += setup-ide.o
 obj-$(CONFIG_S3C64XX_SETUP_KEYPAD)     += setup-keypad.o
 obj-$(CONFIG_S3C64XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
 obj-$(CONFIG_S3C64XX_SETUP_SPI)                += setup-spi.o
+obj-$(CONFIG_S3C64XX_SETUP_USB_PHY) += setup-usb-phy.o
 
 # Machine support
 

diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index 8077f650eb0e6c291ac607aff70a02b35dfa62b8..3b56bd9cb880cf957f1ff474c9c1bacad9188c33 100644 (file)
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -59,6 +59,7 @@
 #include <plat/sdhci.h>
 #include <plat/gpio-cfg.h>
 #include <plat/s3c64xx-spi.h>
+#include <plat/udc-hs.h>
 
 #include <plat/keypad.h>
 #include <plat/clock.h>
@@ -698,6 +699,8 @@ static struct s3c_sdhci_platdata crag6410_hsmmc0_pdata = {
        .cfg_gpio               = crag6410_cfg_sdhci0,
 };
 
+static struct s3c_hsotg_plat crag6410_hsotg_pdata;
+
 static void __init crag6410_machine_init(void)
 {
        /* Open drain IRQs need pullups */
@@ -722,6 +725,7 @@ static void __init crag6410_machine_init(void)
        s3c_i2c0_set_platdata(&i2c0_pdata);
        s3c_i2c1_set_platdata(&i2c1_pdata);
        s3c_fb_set_platdata(&crag6410_lcd_pdata);
+       s3c_hsotg_set_platdata(&crag6410_hsotg_pdata);
 
        i2c_register_board_info(0, i2c_devs0, ARRAY_SIZE(i2c_devs0));
        i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1));

diff --git a/arch/arm/mach-s3c64xx/mach-smartq.c b/arch/arm/mach-s3c64xx/mach-smartq.c
index ce31db136231774e5fda9da7ab1a8103209be02c..ce745e19aa2756e5a0bbc3f5094bc1ceba08060b 100644 (file)
--- a/arch/arm/mach-s3c64xx/mach-smartq.c
+++ b/arch/arm/mach-s3c64xx/mach-smartq.c
@@ -187,6 +187,8 @@ static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
        },
 };
 
+static struct s3c_hsotg_plat smartq_hsotg_pdata;
+
 static int __init smartq_lcd_setup_gpio(void)
 {
        int ret;
@@ -383,6 +385,7 @@ void __init smartq_map_io(void)
 void __init smartq_machine_init(void)
 {
        s3c_i2c0_set_platdata(NULL);
+       s3c_hsotg_set_platdata(&smartq_hsotg_pdata);
        s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
        s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
        s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);

diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-s3c64xx/mach-smdk6410.c
index ca6fc204f0ea3317d0ac6a42a67aebe77409f484..d55bc96d9582f9d24301da64e64d90984c7c585a 100644 (file)
--- a/arch/arm/mach-s3c64xx/mach-smdk6410.c
+++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c
@@ -72,6 +72,7 @@
 #include <plat/keypad.h>
 #include <plat/backlight.h>
 #include <plat/regs-fb-v4.h>
+#include <plat/udc-hs.h>
 
 #include "common.h"
 
@@ -631,6 +632,8 @@ static struct platform_pwm_backlight_data smdk6410_bl_data = {
        .pwm_id = 1,
 };
 
+static struct s3c_hsotg_plat smdk6410_hsotg_pdata;
+
 static void __init smdk6410_map_io(void)
 {
        u32 tmp;
@@ -659,6 +662,7 @@ static void __init smdk6410_machine_init(void)
        s3c_i2c0_set_platdata(NULL);
        s3c_i2c1_set_platdata(NULL);
        s3c_fb_set_platdata(&smdk6410_lcd_pdata);
+       s3c_hsotg_set_platdata(&smdk6410_hsotg_pdata);
 
        samsung_keypad_set_platdata(&smdk6410_keypad_data);
 

diff --git a/arch/arm/mach-s3c64xx/setup-usb-phy.c b/arch/arm/mach-s3c64xx/setup-usb-phy.c
new file mode 100644 (file)
index 0000000..f6757e0
--- /dev/null
+++ b/arch/arm/mach-s3c64xx/setup-usb-phy.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2011 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 as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#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 s3c_usb_otgphy_init(struct platform_device *pdev)
+{
+       struct clk *xusbxti;
+       u32 phyclk;
+
+       writel(readl(S3C64XX_OTHERS) | S3C64XX_OTHERS_USBMASK, S3C64XX_OTHERS);
+
+       /* 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 s3c_usb_otgphy_exit(struct platform_device *pdev)
+{
+       writel((readl(S3C_PHYPWR) | S3C_PHYPWR_ANALOG_POWERDOWN |
+                               S3C_PHYPWR_OTG_DISABLE), S3C_PHYPWR);
+
+       writel(readl(S3C64XX_OTHERS) & ~S3C64XX_OTHERS_USBMASK, S3C64XX_OTHERS);
+
+       return 0;
+}
+
+int s5p_usb_phy_init(struct platform_device *pdev, int type)
+{
+       if (type == S5P_USB_PHY_DEVICE)
+               return s3c_usb_otgphy_init(pdev);
+
+       return -EINVAL;
+}
+
+int s5p_usb_phy_exit(struct platform_device *pdev, int type)
+{
+       if (type == S5P_USB_PHY_DEVICE)
+               return s3c_usb_otgphy_exit(pdev);
+
+       return -EINVAL;
+}

diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c
index 145580a4a62cf7a07b5a6a145ed22902136b3ff3..21168eaad3561de5831b9c4b99506e189daef7a2 100644 (file)
--- a/arch/arm/plat-samsung/devs.c
+++ b/arch/arm/plat-samsung/devs.c
@@ -57,6 +57,7 @@
 #include <plat/sdhci.h>
 #include <plat/ts.h>
 #include <plat/udc.h>
+#include <plat/udc-hs.h>
 #include <plat/usb-control.h>
 #include <plat/usb-phy.h>
 #include <plat/regs-iic.h>
@@ -1449,6 +1450,19 @@ struct platform_device s3c_device_usb_hsotg = {
                .coherent_dma_mask      = DMA_BIT_MASK(32),
        },
 };
+
+void __init s3c_hsotg_set_platdata(struct s3c_hsotg_plat *pd)
+{
+       struct s3c_hsotg_plat *npd;
+
+       npd = s3c_set_platdata(pd, sizeof(struct s3c_hsotg_plat),
+                       &s3c_device_usb_hsotg);
+
+       if (!npd->phy_init)
+               npd->phy_init = s5p_usb_phy_init;
+       if (!npd->phy_exit)
+               npd->phy_exit = s5p_usb_phy_exit;
+}
 #endif /* CONFIG_S3C_DEV_USB_HSOTG */
 
 /* USB High Spped 2.0 Device (Gadget) */

diff --git a/arch/arm/plat-samsung/include/plat/regs-usb-hsotg-phy.h b/arch/arm/plat-samsung/include/plat/regs-usb-hsotg-phy.h
index a111ad871833dae9e586fdb6705b9341ad644a35..fcf27966206795c78ec8a3732b2b8cd799a0f398 100644 (file)
--- a/arch/arm/plat-samsung/include/plat/regs-usb-hsotg-phy.h
+++ b/arch/arm/plat-samsung/include/plat/regs-usb-hsotg-phy.h
@@ -25,8 +25,9 @@
 #define S3C_HSOTG_PHYREG(x)    ((x) + S3C_VA_USB_HSPHY)
 
 #define S3C_PHYPWR                             S3C_HSOTG_PHYREG(0x00)
-#define SRC_PHYPWR_OTG_DISABLE                 (1 << 4)
-#define SRC_PHYPWR_ANALOG_POWERDOWN            (1 << 3)
+#define S3C_PHYPWR_NORMAL_MASK                 (0x19 << 0)
+#define S3C_PHYPWR_OTG_DISABLE                 (1 << 4)
+#define S3C_PHYPWR_ANALOG_POWERDOWN            (1 << 3)
 #define SRC_PHYPWR_FORCE_SUSPEND               (1 << 1)
 
 #define S3C_PHYCLK                             S3C_HSOTG_PHYREG(0x04)
@@ -42,7 +43,7 @@
 
 #define S3C_RSTCON                             S3C_HSOTG_PHYREG(0x08)
 #define S3C_RSTCON_PHYCLK                      (1 << 2)
-#define S3C_RSTCON_HCLK                                (1 << 2)
+#define S3C_RSTCON_HCLK                                (1 << 1)
 #define S3C_RSTCON_PHY                         (1 << 0)
 
 #define S3C_PHYTUNE                            S3C_HSOTG_PHYREG(0x20)

diff --git a/arch/arm/plat-samsung/include/plat/udc-hs.h b/arch/arm/plat-samsung/include/plat/udc-hs.h
index a22a4f2eea9440c45ebc362c243297d44df677e7..c9e3667cb2b15ef142c3766de06cf519131dedf1 100644 (file)
--- a/arch/arm/plat-samsung/include/plat/udc-hs.h
+++ b/arch/arm/plat-samsung/include/plat/udc-hs.h
@@ -26,4 +26,9 @@ enum s3c_hsotg_dmamode {
 struct s3c_hsotg_plat {
        enum s3c_hsotg_dmamode  dma;
        unsigned int            is_osc : 1;
+
+       int (*phy_init)(struct platform_device *pdev, int type);
+       int (*phy_exit)(struct platform_device *pdev, int type);
 };
+
+extern void s3c_hsotg_set_platdata(struct s3c_hsotg_plat *pd);