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e00f0b4a VL |
1 | /* |
2 | * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group | |
3 | * | |
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. | |
8 | * | |
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. | |
e00f0b4a VL |
13 | */ |
14 | ||
45b131a7 | 15 | #include <linux/gpio.h> |
e00f0b4a | 16 | #include <linux/init.h> |
45b131a7 | 17 | #include <linux/interrupt.h> |
e00f0b4a | 18 | #include <linux/platform_device.h> |
5a0e3ad6 | 19 | #include <linux/slab.h> |
220bbcea | 20 | #include <linux/types.h> |
66c202ad | 21 | #include <linux/fsl_devices.h> |
e00f0b4a | 22 | |
d67d1075 VL |
23 | #include <linux/usb/otg.h> |
24 | ||
e00f0b4a | 25 | #include <mach/common.h> |
e00f0b4a | 26 | #include <mach/iomux-mx3.h> |
220bbcea | 27 | #include <mach/hardware.h> |
45b131a7 | 28 | #include <mach/mmc.h> |
d67d1075 VL |
29 | #include <mach/mxc_ehci.h> |
30 | #include <mach/ulpi.h> | |
e00f0b4a | 31 | |
16cf5c41 | 32 | #include "devices-imx31.h" |
e00f0b4a VL |
33 | #include "devices.h" |
34 | ||
220bbcea VL |
35 | static unsigned int devboard_pins[] = { |
36 | /* UART1 */ | |
e00f0b4a VL |
37 | MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2, |
38 | MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2, | |
56c7a45b VL |
39 | /* SDHC2 */ |
40 | MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2, | |
41 | MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0, | |
42 | MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD, | |
43 | MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29, | |
d67d1075 VL |
44 | /* USB H1 */ |
45 | MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM, | |
46 | MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP, | |
47 | MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB, | |
48 | MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND, | |
49 | MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12, | |
e335c75c VL |
50 | /* SEL */ |
51 | MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9, | |
52 | MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11, | |
e00f0b4a VL |
53 | }; |
54 | ||
16cf5c41 | 55 | static const struct imxuart_platform_data uart_pdata __initconst = { |
220bbcea VL |
56 | .flags = IMXUART_HAVE_RTSCTS, |
57 | }; | |
58 | ||
45b131a7 VL |
59 | #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR) |
60 | #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW) | |
61 | ||
62 | static int devboard_sdhc2_get_ro(struct device *dev) | |
63 | { | |
563abb4b | 64 | return !gpio_get_value(SDHC2_WP); |
45b131a7 VL |
65 | } |
66 | ||
67 | static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq, | |
68 | void *data) | |
69 | { | |
4f163eb8 SH |
70 | int ret; |
71 | ||
72 | ret = gpio_request(SDHC2_CD, "sdhc-detect"); | |
73 | if (ret) | |
74 | return ret; | |
75 | ||
76 | gpio_direction_input(SDHC2_CD); | |
77 | ||
78 | ret = gpio_request(SDHC2_WP, "sdhc-wp"); | |
79 | if (ret) | |
80 | goto err_gpio_free; | |
81 | gpio_direction_input(SDHC2_WP); | |
82 | ||
83 | ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq, | |
45b131a7 VL |
84 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
85 | "sdhc2-card-detect", data); | |
4f163eb8 SH |
86 | if (ret) |
87 | goto err_gpio_free_2; | |
88 | ||
89 | return 0; | |
90 | ||
91 | err_gpio_free_2: | |
92 | gpio_free(SDHC2_WP); | |
93 | err_gpio_free: | |
94 | gpio_free(SDHC2_CD); | |
95 | ||
96 | return ret; | |
45b131a7 VL |
97 | } |
98 | ||
99 | static void devboard_sdhc2_exit(struct device *dev, void *data) | |
100 | { | |
101 | free_irq(gpio_to_irq(SDHC2_CD), data); | |
4f163eb8 SH |
102 | gpio_free(SDHC2_WP); |
103 | gpio_free(SDHC2_CD); | |
45b131a7 VL |
104 | } |
105 | ||
106 | static struct imxmmc_platform_data sdhc2_pdata = { | |
107 | .get_ro = devboard_sdhc2_get_ro, | |
108 | .init = devboard_sdhc2_init, | |
109 | .exit = devboard_sdhc2_exit, | |
110 | }; | |
111 | ||
e335c75c VL |
112 | #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1) |
113 | #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1) | |
114 | #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1) | |
115 | #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1) | |
116 | ||
117 | static void devboard_init_sel_gpios(void) | |
118 | { | |
119 | if (!gpio_request(SEL0, "sel0")) { | |
120 | gpio_direction_input(SEL0); | |
121 | gpio_export(SEL0, true); | |
122 | } | |
123 | ||
124 | if (!gpio_request(SEL1, "sel1")) { | |
125 | gpio_direction_input(SEL1); | |
126 | gpio_export(SEL1, true); | |
127 | } | |
128 | ||
129 | if (!gpio_request(SEL2, "sel2")) { | |
130 | gpio_direction_input(SEL2); | |
131 | gpio_export(SEL2, true); | |
132 | } | |
133 | ||
134 | if (!gpio_request(SEL3, "sel3")) { | |
135 | gpio_direction_input(SEL3); | |
136 | gpio_export(SEL3, true); | |
137 | } | |
138 | } | |
d67d1075 VL |
139 | #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ |
140 | PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU) | |
141 | ||
142 | static int devboard_usbh1_hw_init(struct platform_device *pdev) | |
143 | { | |
144 | mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true); | |
145 | ||
146 | mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG); | |
147 | mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG); | |
148 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG); | |
149 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG); | |
150 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG); | |
151 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG); | |
152 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG); | |
153 | mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG); | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | #define USBH1_VBUSEN_B IOMUX_TO_GPIO(MX31_PIN_NFRE_B) | |
159 | #define USBH1_MODE IOMUX_TO_GPIO(MX31_PIN_NFALE) | |
160 | ||
161 | static int devboard_isp1105_init(struct otg_transceiver *otg) | |
162 | { | |
163 | int ret = gpio_request(USBH1_MODE, "usbh1-mode"); | |
164 | if (ret) | |
165 | return ret; | |
166 | /* single ended */ | |
167 | gpio_direction_output(USBH1_MODE, 0); | |
168 | ||
169 | ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen"); | |
170 | if (ret) { | |
171 | gpio_free(USBH1_MODE); | |
172 | return ret; | |
173 | } | |
174 | gpio_direction_output(USBH1_VBUSEN_B, 1); | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | ||
180 | static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on) | |
181 | { | |
182 | if (on) | |
183 | gpio_set_value(USBH1_VBUSEN_B, 0); | |
184 | else | |
185 | gpio_set_value(USBH1_VBUSEN_B, 1); | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static struct mxc_usbh_platform_data usbh1_pdata = { | |
191 | .init = devboard_usbh1_hw_init, | |
192 | .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL, | |
193 | .flags = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI, | |
194 | }; | |
195 | ||
196 | static int __init devboard_usbh1_init(void) | |
197 | { | |
198 | struct otg_transceiver *otg; | |
199 | ||
200 | otg = kzalloc(sizeof(*otg), GFP_KERNEL); | |
201 | if (!otg) | |
202 | return -ENOMEM; | |
203 | ||
204 | otg->label = "ISP1105"; | |
205 | otg->init = devboard_isp1105_init; | |
206 | otg->set_vbus = devboard_isp1105_set_vbus; | |
207 | ||
208 | usbh1_pdata.otg = otg; | |
209 | ||
4c21186b | 210 | return mxc_register_device(&mxc_usbh1, &usbh1_pdata); |
d67d1075 VL |
211 | } |
212 | ||
66c202ad PR |
213 | |
214 | static struct fsl_usb2_platform_data usb_pdata = { | |
215 | .operating_mode = FSL_USB2_DR_DEVICE, | |
216 | .phy_mode = FSL_USB2_PHY_ULPI, | |
217 | }; | |
218 | ||
e00f0b4a VL |
219 | /* |
220 | * system init for baseboard usage. Will be called by mx31moboard init. | |
221 | */ | |
222 | void __init mx31moboard_devboard_init(void) | |
223 | { | |
224 | printk(KERN_INFO "Initializing mx31devboard peripherals\n"); | |
220bbcea VL |
225 | |
226 | mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins), | |
227 | "devboard"); | |
228 | ||
16cf5c41 | 229 | imx31_add_imx_uart1(&uart_pdata); |
45b131a7 VL |
230 | |
231 | mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata); | |
d67d1075 | 232 | |
e335c75c VL |
233 | devboard_init_sel_gpios(); |
234 | ||
66c202ad PR |
235 | mxc_register_device(&mxc_otg_udc_device, &usb_pdata); |
236 | ||
d67d1075 | 237 | devboard_usbh1_init(); |
e00f0b4a | 238 | } |