ARM: pxa/cm-x300: enable USB host port2

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index c70e6c2f4e7c..8e0b5622b277 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
+#include <linux/clk.h>
 
 #include <linux/gpio.h>
 #include <linux/dm9000.h>
@@ -50,6 +51,7 @@
 #include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 #include <mach/audio.h>
+#include <mach/pxa3xx-u2d.h>
 
 #include <asm/mach/map.h>
 
@@ -68,6 +70,8 @@
 #define GPIO97_RTC_RD           (97)
 #define GPIO98_RTC_IO           (98)
 
+#define GPIO_ULPI_PHY_RST       (127)
+
 static mfp_cfg_t cm_x3xx_mfp_cfg[] __initdata = {
         /* LCD */
         GPIO54_LCD_LDD_0,
@@ -472,6 +476,78 @@ static void __init cm_x300_init_mmc(void)
 static inline void cm_x300_init_mmc(void) {}
 #endif
 
+#if defined(CONFIG_PXA310_ULPI)
+static struct clk *pout_clk;
+
+static int cm_x300_ulpi_phy_reset(void)
+{
+        int err;
+
+        /* reset the PHY */
+        err = gpio_request(GPIO_ULPI_PHY_RST, "ulpi reset");
+        if (err) {
+                pr_err("%s: failed to request ULPI reset GPIO: %d\n",
+                       __func__, err);
+                return err;
+        }
+
+        gpio_direction_output(GPIO_ULPI_PHY_RST, 0);
+        msleep(10);
+        gpio_set_value(GPIO_ULPI_PHY_RST, 1);
+        msleep(10);
+
+        gpio_free(GPIO_ULPI_PHY_RST);
+
+        return 0;
+}
+
+static inline int cm_x300_u2d_init(struct device *dev)
+{
+        int err = 0;
+
+        if (cpu_is_pxa310()) {
+                /* CLK_POUT is connected to the ULPI PHY */
+                pout_clk = clk_get(NULL, "CLK_POUT");
+                if (IS_ERR(pout_clk)) {
+                        err = PTR_ERR(pout_clk);
+                        pr_err("%s: failed to get CLK_POUT: %d\n",
+                               __func__, err);
+                        return err;
+                }
+                clk_enable(pout_clk);
+
+                err = cm_x300_ulpi_phy_reset();
+                if (err) {
+                        clk_disable(pout_clk);
+                        clk_put(pout_clk);
+                }
+        }
+
+        return err;
+}
+
+static void cm_x300_u2d_exit(struct device *dev)
+{
+        if (cpu_is_pxa310()) {
+                clk_disable(pout_clk);
+                clk_put(pout_clk);
+        }
+}
+
+static struct pxa3xx_u2d_platform_data cm_x300_u2d_platform_data = {
+        .ulpi_mode      = ULPI_SER_6PIN,
+        .init           = cm_x300_u2d_init,
+        .exit           = cm_x300_u2d_exit,
+};
+
+static void cm_x300_init_u2d(void)
+{
+        pxa3xx_set_u2d_info(&cm_x300_u2d_platform_data);
+}
+#else
+static inline void cm_x300_init_u2d(void) {}
+#endif
+
 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 static int cm_x300_ohci_init(struct device *dev)
 {
@@ -754,6 +830,7 @@ static void __init cm_x300_init(void)
         cm_x300_init_da9030();
         cm_x300_init_dm9000();
         cm_x300_init_lcd();
+        cm_x300_init_u2d();
         cm_x300_init_ohci();
         cm_x300_init_mmc();
         cm_x300_init_nand();