2 * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/gpio.h>
16 #include <linux/init.h>
17 #include <linux/interrupt.h>
18 #include <linux/delay.h>
19 #include <linux/platform_device.h>
20 #include <linux/slab.h>
21 #include <linux/types.h>
23 #include <linux/usb/otg.h>
26 #include "devices-imx31.h"
29 #include "iomux-mx3.h"
32 static unsigned int devboard_pins
[] = {
34 MX31_PIN_CTS2__CTS2
, MX31_PIN_RTS2__RTS2
,
35 MX31_PIN_TXD2__TXD2
, MX31_PIN_RXD2__RXD2
,
37 MX31_PIN_PC_PWRON__SD2_DATA3
, MX31_PIN_PC_VS1__SD2_DATA2
,
38 MX31_PIN_PC_READY__SD2_DATA1
, MX31_PIN_PC_WAIT_B__SD2_DATA0
,
39 MX31_PIN_PC_CD2_B__SD2_CLK
, MX31_PIN_PC_CD1_B__SD2_CMD
,
40 MX31_PIN_ATA_DIOR__GPIO3_28
, MX31_PIN_ATA_DIOW__GPIO3_29
,
42 MX31_PIN_CSPI1_MISO__USBH1_RXDP
, MX31_PIN_CSPI1_MOSI__USBH1_RXDM
,
43 MX31_PIN_CSPI1_SS0__USBH1_TXDM
, MX31_PIN_CSPI1_SS1__USBH1_TXDP
,
44 MX31_PIN_CSPI1_SS2__USBH1_RCV
, MX31_PIN_CSPI1_SCLK__USBH1_OEB
,
45 MX31_PIN_CSPI1_SPI_RDY__USBH1_FS
, MX31_PIN_SFS6__USBH1_SUSPEND
,
46 MX31_PIN_NFRE_B__GPIO1_11
, MX31_PIN_NFALE__GPIO1_12
,
48 MX31_PIN_DTR_DCE1__GPIO2_8
, MX31_PIN_DSR_DCE1__GPIO2_9
,
49 MX31_PIN_RI_DCE1__GPIO2_10
, MX31_PIN_DCD_DCE1__GPIO2_11
,
52 static const struct imxuart_platform_data uart_pdata __initconst
= {
53 .flags
= IMXUART_HAVE_RTSCTS
,
56 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
57 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
59 static int devboard_sdhc2_get_ro(struct device
*dev
)
61 return !gpio_get_value(SDHC2_WP
);
64 static int devboard_sdhc2_init(struct device
*dev
, irq_handler_t detect_irq
,
69 ret
= gpio_request(SDHC2_CD
, "sdhc-detect");
73 gpio_direction_input(SDHC2_CD
);
75 ret
= gpio_request(SDHC2_WP
, "sdhc-wp");
78 gpio_direction_input(SDHC2_WP
);
80 ret
= request_irq(gpio_to_irq(SDHC2_CD
), detect_irq
,
81 IRQF_TRIGGER_RISING
| IRQF_TRIGGER_FALLING
,
82 "sdhc2-card-detect", data
);
96 static void devboard_sdhc2_exit(struct device
*dev
, void *data
)
98 free_irq(gpio_to_irq(SDHC2_CD
), data
);
103 static const struct imxmmc_platform_data sdhc2_pdata __initconst
= {
104 .get_ro
= devboard_sdhc2_get_ro
,
105 .init
= devboard_sdhc2_init
,
106 .exit
= devboard_sdhc2_exit
,
109 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
110 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
111 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
112 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
114 static void devboard_init_sel_gpios(void)
116 if (!gpio_request(SEL0
, "sel0")) {
117 gpio_direction_input(SEL0
);
118 gpio_export(SEL0
, true);
121 if (!gpio_request(SEL1
, "sel1")) {
122 gpio_direction_input(SEL1
);
123 gpio_export(SEL1
, true);
126 if (!gpio_request(SEL2
, "sel2")) {
127 gpio_direction_input(SEL2
);
128 gpio_export(SEL2
, true);
131 if (!gpio_request(SEL3
, "sel3")) {
132 gpio_direction_input(SEL3
);
133 gpio_export(SEL3
, true);
136 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
137 PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
139 static int devboard_usbh1_hw_init(struct platform_device
*pdev
)
141 mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND
, true);
143 mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO
, USB_PAD_CFG
);
144 mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI
, USB_PAD_CFG
);
145 mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0
, USB_PAD_CFG
);
146 mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1
, USB_PAD_CFG
);
147 mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2
, USB_PAD_CFG
);
148 mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK
, USB_PAD_CFG
);
149 mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY
, USB_PAD_CFG
);
150 mxc_iomux_set_pad(MX31_PIN_SFS6
, USB_PAD_CFG
);
154 return mx31_initialize_usb_hw(pdev
->id
, MXC_EHCI_POWER_PINS_ENABLED
|
155 MXC_EHCI_INTERFACE_SINGLE_UNI
);
158 #define USBH1_VBUSEN_B IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
159 #define USBH1_MODE IOMUX_TO_GPIO(MX31_PIN_NFALE)
161 static int devboard_isp1105_init(struct usb_phy
*otg
)
163 int ret
= gpio_request(USBH1_MODE
, "usbh1-mode");
167 gpio_direction_output(USBH1_MODE
, 0);
169 ret
= gpio_request(USBH1_VBUSEN_B
, "usbh1-vbusen");
171 gpio_free(USBH1_MODE
);
174 gpio_direction_output(USBH1_VBUSEN_B
, 1);
180 static int devboard_isp1105_set_vbus(struct usb_otg
*otg
, bool on
)
183 gpio_set_value(USBH1_VBUSEN_B
, 0);
185 gpio_set_value(USBH1_VBUSEN_B
, 1);
190 static struct mxc_usbh_platform_data usbh1_pdata __initdata
= {
191 .init
= devboard_usbh1_hw_init
,
192 .portsc
= MXC_EHCI_MODE_UTMI
| MXC_EHCI_SERIAL
,
195 static int __init
devboard_usbh1_init(void)
198 struct platform_device
*pdev
;
200 phy
= kzalloc(sizeof(*phy
), GFP_KERNEL
);
204 phy
->otg
= kzalloc(sizeof(struct usb_otg
), GFP_KERNEL
);
210 phy
->label
= "ISP1105";
211 phy
->init
= devboard_isp1105_init
;
212 phy
->otg
->set_vbus
= devboard_isp1105_set_vbus
;
214 usbh1_pdata
.otg
= phy
;
216 pdev
= imx31_add_mxc_ehci_hs(1, &usbh1_pdata
);
218 return PTR_ERR_OR_ZERO(pdev
);
222 static const struct fsl_usb2_platform_data usb_pdata __initconst
= {
223 .operating_mode
= FSL_USB2_DR_DEVICE
,
224 .phy_mode
= FSL_USB2_PHY_ULPI
,
228 * system init for baseboard usage. Will be called by mx31moboard init.
230 void __init
mx31moboard_devboard_init(void)
232 printk(KERN_INFO
"Initializing mx31devboard peripherals\n");
234 mxc_iomux_setup_multiple_pins(devboard_pins
, ARRAY_SIZE(devboard_pins
),
237 imx31_add_imx_uart1(&uart_pdata
);
239 imx31_add_mxc_mmc(1, &sdhc2_pdata
);
241 devboard_init_sel_gpios();
243 imx31_add_fsl_usb2_udc(&usb_pdata
);
245 devboard_usbh1_init();