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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> |
4bd597b6 | 18 | #include <linux/delay.h> |
e00f0b4a | 19 | #include <linux/platform_device.h> |
5a0e3ad6 | 20 | #include <linux/slab.h> |
220bbcea | 21 | #include <linux/types.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> |
d67d1075 | 28 | #include <mach/ulpi.h> |
e00f0b4a | 29 | |
16cf5c41 | 30 | #include "devices-imx31.h" |
e00f0b4a VL |
31 | #include "devices.h" |
32 | ||
220bbcea VL |
33 | static unsigned int devboard_pins[] = { |
34 | /* UART1 */ | |
e00f0b4a VL |
35 | MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2, |
36 | MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2, | |
56c7a45b VL |
37 | /* SDHC2 */ |
38 | MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2, | |
39 | MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0, | |
40 | MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD, | |
41 | MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29, | |
d67d1075 VL |
42 | /* USB H1 */ |
43 | MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM, | |
44 | MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP, | |
45 | MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB, | |
46 | MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND, | |
47 | MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12, | |
e335c75c VL |
48 | /* SEL */ |
49 | MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9, | |
50 | MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11, | |
e00f0b4a VL |
51 | }; |
52 | ||
16cf5c41 | 53 | static const struct imxuart_platform_data uart_pdata __initconst = { |
220bbcea VL |
54 | .flags = IMXUART_HAVE_RTSCTS, |
55 | }; | |
56 | ||
45b131a7 VL |
57 | #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR) |
58 | #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW) | |
59 | ||
60 | static int devboard_sdhc2_get_ro(struct device *dev) | |
61 | { | |
563abb4b | 62 | return !gpio_get_value(SDHC2_WP); |
45b131a7 VL |
63 | } |
64 | ||
65 | static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq, | |
66 | void *data) | |
67 | { | |
4f163eb8 SH |
68 | int ret; |
69 | ||
70 | ret = gpio_request(SDHC2_CD, "sdhc-detect"); | |
71 | if (ret) | |
72 | return ret; | |
73 | ||
74 | gpio_direction_input(SDHC2_CD); | |
75 | ||
76 | ret = gpio_request(SDHC2_WP, "sdhc-wp"); | |
77 | if (ret) | |
78 | goto err_gpio_free; | |
79 | gpio_direction_input(SDHC2_WP); | |
80 | ||
81 | ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq, | |
45b131a7 VL |
82 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
83 | "sdhc2-card-detect", data); | |
4f163eb8 SH |
84 | if (ret) |
85 | goto err_gpio_free_2; | |
86 | ||
87 | return 0; | |
88 | ||
89 | err_gpio_free_2: | |
90 | gpio_free(SDHC2_WP); | |
91 | err_gpio_free: | |
92 | gpio_free(SDHC2_CD); | |
93 | ||
94 | return ret; | |
45b131a7 VL |
95 | } |
96 | ||
97 | static void devboard_sdhc2_exit(struct device *dev, void *data) | |
98 | { | |
99 | free_irq(gpio_to_irq(SDHC2_CD), data); | |
4f163eb8 SH |
100 | gpio_free(SDHC2_WP); |
101 | gpio_free(SDHC2_CD); | |
45b131a7 VL |
102 | } |
103 | ||
6a697e3d | 104 | static const struct imxmmc_platform_data sdhc2_pdata __initconst = { |
45b131a7 VL |
105 | .get_ro = devboard_sdhc2_get_ro, |
106 | .init = devboard_sdhc2_init, | |
107 | .exit = devboard_sdhc2_exit, | |
108 | }; | |
109 | ||
e335c75c VL |
110 | #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1) |
111 | #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1) | |
112 | #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1) | |
113 | #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1) | |
114 | ||
115 | static void devboard_init_sel_gpios(void) | |
116 | { | |
117 | if (!gpio_request(SEL0, "sel0")) { | |
118 | gpio_direction_input(SEL0); | |
119 | gpio_export(SEL0, true); | |
120 | } | |
121 | ||
122 | if (!gpio_request(SEL1, "sel1")) { | |
123 | gpio_direction_input(SEL1); | |
124 | gpio_export(SEL1, true); | |
125 | } | |
126 | ||
127 | if (!gpio_request(SEL2, "sel2")) { | |
128 | gpio_direction_input(SEL2); | |
129 | gpio_export(SEL2, true); | |
130 | } | |
131 | ||
132 | if (!gpio_request(SEL3, "sel3")) { | |
133 | gpio_direction_input(SEL3); | |
134 | gpio_export(SEL3, true); | |
135 | } | |
136 | } | |
d67d1075 VL |
137 | #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ |
138 | PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU) | |
139 | ||
140 | static int devboard_usbh1_hw_init(struct platform_device *pdev) | |
141 | { | |
142 | mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true); | |
143 | ||
144 | mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG); | |
145 | mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG); | |
146 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG); | |
147 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG); | |
148 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG); | |
149 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG); | |
150 | mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG); | |
151 | mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG); | |
152 | ||
4bd597b6 SH |
153 | mdelay(10); |
154 | ||
155 | return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED | | |
156 | MXC_EHCI_INTERFACE_SINGLE_UNI); | |
d67d1075 VL |
157 | } |
158 | ||
159 | #define USBH1_VBUSEN_B IOMUX_TO_GPIO(MX31_PIN_NFRE_B) | |
160 | #define USBH1_MODE IOMUX_TO_GPIO(MX31_PIN_NFALE) | |
161 | ||
162 | static int devboard_isp1105_init(struct otg_transceiver *otg) | |
163 | { | |
164 | int ret = gpio_request(USBH1_MODE, "usbh1-mode"); | |
165 | if (ret) | |
166 | return ret; | |
167 | /* single ended */ | |
168 | gpio_direction_output(USBH1_MODE, 0); | |
169 | ||
170 | ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen"); | |
171 | if (ret) { | |
172 | gpio_free(USBH1_MODE); | |
173 | return ret; | |
174 | } | |
175 | gpio_direction_output(USBH1_VBUSEN_B, 1); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | ||
181 | static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on) | |
182 | { | |
183 | if (on) | |
184 | gpio_set_value(USBH1_VBUSEN_B, 0); | |
185 | else | |
186 | gpio_set_value(USBH1_VBUSEN_B, 1); | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
2d58de28 | 191 | static struct mxc_usbh_platform_data usbh1_pdata __initdata = { |
d67d1075 VL |
192 | .init = devboard_usbh1_hw_init, |
193 | .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL, | |
d67d1075 VL |
194 | }; |
195 | ||
196 | static int __init devboard_usbh1_init(void) | |
197 | { | |
198 | struct otg_transceiver *otg; | |
2d58de28 | 199 | struct platform_device *pdev; |
d67d1075 VL |
200 | |
201 | otg = kzalloc(sizeof(*otg), GFP_KERNEL); | |
202 | if (!otg) | |
203 | return -ENOMEM; | |
204 | ||
205 | otg->label = "ISP1105"; | |
206 | otg->init = devboard_isp1105_init; | |
207 | otg->set_vbus = devboard_isp1105_set_vbus; | |
208 | ||
209 | usbh1_pdata.otg = otg; | |
210 | ||
2d58de28 UKK |
211 | pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata); |
212 | if (IS_ERR(pdev)) | |
213 | return PTR_ERR(pdev); | |
214 | ||
215 | return 0; | |
d67d1075 VL |
216 | } |
217 | ||
66c202ad | 218 | |
9e1dde33 | 219 | static const struct fsl_usb2_platform_data usb_pdata __initconst = { |
66c202ad PR |
220 | .operating_mode = FSL_USB2_DR_DEVICE, |
221 | .phy_mode = FSL_USB2_PHY_ULPI, | |
222 | }; | |
223 | ||
e00f0b4a VL |
224 | /* |
225 | * system init for baseboard usage. Will be called by mx31moboard init. | |
226 | */ | |
227 | void __init mx31moboard_devboard_init(void) | |
228 | { | |
229 | printk(KERN_INFO "Initializing mx31devboard peripherals\n"); | |
220bbcea VL |
230 | |
231 | mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins), | |
232 | "devboard"); | |
233 | ||
16cf5c41 | 234 | imx31_add_imx_uart1(&uart_pdata); |
45b131a7 | 235 | |
6a697e3d | 236 | imx31_add_mxc_mmc(1, &sdhc2_pdata); |
d67d1075 | 237 | |
e335c75c VL |
238 | devboard_init_sel_gpios(); |
239 | ||
9e1dde33 | 240 | imx31_add_fsl_usb2_udc(&usb_pdata); |
66c202ad | 241 | |
d67d1075 | 242 | devboard_usbh1_init(); |
e00f0b4a | 243 | } |