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authorFabio Estevam <fabio.estevam@freescale.com>2010-12-22 09:25:31 -0500
committerSascha Hauer <s.hauer@pengutronix.de>2011-01-03 04:17:12 -0500
commit96cf4239c72af1fa099affc720731bad2f86927b (patch)
tree0d2a8ef6440e59d96ce62091d41b062ee39f5a39 /arch/arm/mach-imx/mach-mx27_3ds.c
parent130a0ddad9e8f48250dd0e4a5f35aa8afa9d1c5f (diff)
ARM: imx/mx27_3ds: Add USB OTG support
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx/mach-mx27_3ds.c')
-rw-r--r--arch/arm/mach-imx/mach-mx27_3ds.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 1a7e879a4543..0ee7a734832e 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -23,16 +23,22 @@
23#include <linux/platform_device.h> 23#include <linux/platform_device.h>
24#include <linux/gpio.h> 24#include <linux/gpio.h>
25#include <linux/irq.h> 25#include <linux/irq.h>
26#include <linux/usb/otg.h>
27#include <linux/usb/ulpi.h>
28#include <linux/delay.h>
29
26#include <asm/mach-types.h> 30#include <asm/mach-types.h>
27#include <asm/mach/arch.h> 31#include <asm/mach/arch.h>
28#include <asm/mach/time.h> 32#include <asm/mach/time.h>
29#include <mach/hardware.h> 33#include <mach/hardware.h>
30#include <mach/common.h> 34#include <mach/common.h>
31#include <mach/iomux-mx27.h> 35#include <mach/iomux-mx27.h>
36#include <mach/ulpi.h>
32 37
33#include "devices-imx27.h" 38#include "devices-imx27.h"
34 39
35#define SD1_EN_GPIO (GPIO_PORTB + 25) 40#define SD1_EN_GPIO (GPIO_PORTB + 25)
41#define OTG_PHY_RESET_GPIO (GPIO_PORTB + 23)
36 42
37static const int mx27pdk_pins[] __initconst = { 43static const int mx27pdk_pins[] __initconst = {
38 /* UART1 */ 44 /* UART1 */
@@ -67,6 +73,20 @@ static const int mx27pdk_pins[] __initconst = {
67 PE22_PF_SD1_CMD, 73 PE22_PF_SD1_CMD,
68 PE23_PF_SD1_CLK, 74 PE23_PF_SD1_CLK,
69 SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT, 75 SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
76 /* OTG */
77 OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
78 PC7_PF_USBOTG_DATA5,
79 PC8_PF_USBOTG_DATA6,
80 PC9_PF_USBOTG_DATA0,
81 PC10_PF_USBOTG_DATA2,
82 PC11_PF_USBOTG_DATA1,
83 PC12_PF_USBOTG_DATA4,
84 PC13_PF_USBOTG_DATA3,
85 PE0_PF_USBOTG_NXT,
86 PE1_PF_USBOTG_STP,
87 PE2_PF_USBOTG_DIR,
88 PE24_PF_USBOTG_CLK,
89 PE25_PF_USBOTG_DATA7,
70}; 90};
71 91
72static const struct imxuart_platform_data uart_pdata __initconst = { 92static const struct imxuart_platform_data uart_pdata __initconst = {
@@ -118,6 +138,45 @@ static void mx27_3ds_sdhc1_enable_level_translator(void)
118 gpio_direction_output(SD1_EN_GPIO, 1); 138 gpio_direction_output(SD1_EN_GPIO, 1);
119} 139}
120 140
141
142static int otg_phy_init(void)
143{
144 gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
145 gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
146 mdelay(1);
147 gpio_set_value(OTG_PHY_RESET_GPIO, 1);
148 return 0;
149}
150
151#if defined(CONFIG_USB_ULPI)
152
153static struct mxc_usbh_platform_data otg_pdata __initdata = {
154 .portsc = MXC_EHCI_MODE_ULPI,
155 .flags = MXC_EHCI_INTERFACE_DIFF_UNI,
156};
157#endif
158
159static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
160 .operating_mode = FSL_USB2_DR_DEVICE,
161 .phy_mode = FSL_USB2_PHY_ULPI,
162};
163
164static int otg_mode_host;
165
166static int __init mx27_3ds_otg_mode(char *options)
167{
168 if (!strcmp(options, "host"))
169 otg_mode_host = 1;
170 else if (!strcmp(options, "device"))
171 otg_mode_host = 0;
172 else
173 pr_info("otg_mode neither \"host\" nor \"device\". "
174 "Defaulting to device\n");
175 return 0;
176}
177__setup("otg_mode=", mx27_3ds_otg_mode);
178
179
121static void __init mx27pdk_init(void) 180static void __init mx27pdk_init(void)
122{ 181{
123 mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins), 182 mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
@@ -128,6 +187,18 @@ static void __init mx27pdk_init(void)
128 imx27_add_imx_keypad(&mx27_3ds_keymap_data); 187 imx27_add_imx_keypad(&mx27_3ds_keymap_data);
129 imx27_add_mxc_mmc(0, &sdhc1_pdata); 188 imx27_add_mxc_mmc(0, &sdhc1_pdata);
130 imx27_add_imx2_wdt(NULL); 189 imx27_add_imx2_wdt(NULL);
190 otg_phy_init();
191#if defined(CONFIG_USB_ULPI)
192 if (otg_mode_host) {
193 otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
194 ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
195
196 imx27_add_mxc_ehci_otg(&otg_pdata);
197 }
198#endif
199 if (!otg_mode_host)
200 imx27_add_fsl_usb2_udc(&otg_device_pdata);
201
131} 202}
132 203
133static void __init mx27pdk_timer_init(void) 204static void __init mx27pdk_timer_init(void)