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1 /*
2  * Copyright (C) 2010 Eric Benard - eric@eukrea.com
3  * Copyright (C) 2009 Sascha Hauer, Pengutronix
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  */
19 
20 #include <linux/types.h>
21 #include <linux/init.h>
22 
23 #include <linux/platform_device.h>
24 #include <linux/mtd/physmap.h>
25 #include <linux/memory.h>
26 #include <linux/gpio.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/i2c.h>
30 #include <linux/i2c/tsc2007.h>
31 #include <linux/usb/otg.h>
32 #include <linux/usb/ulpi.h>
33 #include <linux/i2c-gpio.h>
34 
35 #include <asm/mach-types.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/time.h>
38 #include <asm/mach/map.h>
39 
40 #include "common.h"
41 #include "devices-imx35.h"
42 #include "ehci.h"
43 #include "eukrea-baseboards.h"
44 #include "hardware.h"
45 #include "iomux-mx35.h"
46 
47 static const struct imxuart_platform_data uart_pdata __initconst = {
48 	.flags = IMXUART_HAVE_RTSCTS,
49 };
50 
51 static const struct imxi2c_platform_data
52 		eukrea_cpuimx35_i2c0_data __initconst = {
53 	.bitrate =		100000,
54 };
55 
56 #define TSC2007_IRQGPIO		IMX_GPIO_NR(3, 2)
tsc2007_get_pendown_state(struct device * dev)57 static int tsc2007_get_pendown_state(struct device *dev)
58 {
59 	return !gpio_get_value(TSC2007_IRQGPIO);
60 }
61 
62 static struct tsc2007_platform_data tsc2007_info = {
63 	.model			= 2007,
64 	.x_plate_ohms		= 180,
65 	.get_pendown_state = tsc2007_get_pendown_state,
66 };
67 
68 static struct i2c_board_info eukrea_cpuimx35_i2c_devices[] = {
69 	{
70 		I2C_BOARD_INFO("pcf8563", 0x51),
71 	}, {
72 		I2C_BOARD_INFO("tsc2007", 0x48),
73 		.platform_data	= &tsc2007_info,
74 		/* irq number is run-time assigned */
75 	},
76 };
77 
78 static iomux_v3_cfg_t eukrea_cpuimx35_pads[] = {
79 	/* UART1 */
80 	MX35_PAD_CTS1__UART1_CTS,
81 	MX35_PAD_RTS1__UART1_RTS,
82 	MX35_PAD_TXD1__UART1_TXD_MUX,
83 	MX35_PAD_RXD1__UART1_RXD_MUX,
84 	/* FEC */
85 	MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
86 	MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
87 	MX35_PAD_FEC_RX_DV__FEC_RX_DV,
88 	MX35_PAD_FEC_COL__FEC_COL,
89 	MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
90 	MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
91 	MX35_PAD_FEC_TX_EN__FEC_TX_EN,
92 	MX35_PAD_FEC_MDC__FEC_MDC,
93 	MX35_PAD_FEC_MDIO__FEC_MDIO,
94 	MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
95 	MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
96 	MX35_PAD_FEC_CRS__FEC_CRS,
97 	MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
98 	MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
99 	MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
100 	MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
101 	MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
102 	MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
103 	/* I2C1 */
104 	MX35_PAD_I2C1_CLK__I2C1_SCL,
105 	MX35_PAD_I2C1_DAT__I2C1_SDA,
106 	/* TSC2007 IRQ */
107 	MX35_PAD_ATA_DA2__GPIO3_2,
108 };
109 
110 static const struct mxc_nand_platform_data
111 		eukrea_cpuimx35_nand_board_info __initconst = {
112 	.width		= 1,
113 	.hw_ecc		= 1,
114 	.flash_bbt	= 1,
115 };
116 
eukrea_cpuimx35_otg_init(struct platform_device * pdev)117 static int eukrea_cpuimx35_otg_init(struct platform_device *pdev)
118 {
119 	return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
120 }
121 
122 static const struct mxc_usbh_platform_data otg_pdata __initconst = {
123 	.init	= eukrea_cpuimx35_otg_init,
124 	.portsc	= MXC_EHCI_MODE_UTMI,
125 };
126 
eukrea_cpuimx35_usbh1_init(struct platform_device * pdev)127 static int eukrea_cpuimx35_usbh1_init(struct platform_device *pdev)
128 {
129 	return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_SINGLE_UNI |
130 			MXC_EHCI_INTERNAL_PHY | MXC_EHCI_IPPUE_DOWN);
131 }
132 
133 static const struct mxc_usbh_platform_data usbh1_pdata __initconst = {
134 	.init	= eukrea_cpuimx35_usbh1_init,
135 	.portsc	= MXC_EHCI_MODE_SERIAL,
136 };
137 
138 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
139 	.operating_mode	= FSL_USB2_DR_DEVICE,
140 	.phy_mode	= FSL_USB2_PHY_UTMI,
141 	.workaround	= FLS_USB2_WORKAROUND_ENGCM09152,
142 };
143 
144 static bool otg_mode_host __initdata;
145 
eukrea_cpuimx35_otg_mode(char * options)146 static int __init eukrea_cpuimx35_otg_mode(char *options)
147 {
148 	if (!strcmp(options, "host"))
149 		otg_mode_host = true;
150 	else if (!strcmp(options, "device"))
151 		otg_mode_host = false;
152 	else
153 		pr_info("otg_mode neither \"host\" nor \"device\". "
154 			"Defaulting to device\n");
155 	return 1;
156 }
157 __setup("otg_mode=", eukrea_cpuimx35_otg_mode);
158 
159 /*
160  * Board specific initialization.
161  */
eukrea_cpuimx35_init(void)162 static void __init eukrea_cpuimx35_init(void)
163 {
164 	imx35_soc_init();
165 
166 	mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx35_pads,
167 			ARRAY_SIZE(eukrea_cpuimx35_pads));
168 
169 	imx35_add_fec(NULL);
170 	imx35_add_imx2_wdt();
171 
172 	imx35_add_imx_uart0(&uart_pdata);
173 	imx35_add_mxc_nand(&eukrea_cpuimx35_nand_board_info);
174 
175 	eukrea_cpuimx35_i2c_devices[1].irq = gpio_to_irq(TSC2007_IRQGPIO);
176 	i2c_register_board_info(0, eukrea_cpuimx35_i2c_devices,
177 			ARRAY_SIZE(eukrea_cpuimx35_i2c_devices));
178 	imx35_add_imx_i2c0(&eukrea_cpuimx35_i2c0_data);
179 
180 	if (otg_mode_host)
181 		imx35_add_mxc_ehci_otg(&otg_pdata);
182 	else
183 		imx35_add_fsl_usb2_udc(&otg_device_pdata);
184 
185 	imx35_add_mxc_ehci_hs(&usbh1_pdata);
186 
187 #ifdef CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD
188 	eukrea_mbimxsd35_baseboard_init();
189 #endif
190 }
191 
eukrea_cpuimx35_timer_init(void)192 static void __init eukrea_cpuimx35_timer_init(void)
193 {
194 	mx35_clocks_init();
195 }
196 
197 MACHINE_START(EUKREA_CPUIMX35SD, "Eukrea CPUIMX35")
198 	/* Maintainer: Eukrea Electromatique */
199 	.atag_offset = 0x100,
200 	.map_io = mx35_map_io,
201 	.init_early = imx35_init_early,
202 	.init_irq = mx35_init_irq,
203 	.init_time	= eukrea_cpuimx35_timer_init,
204 	.init_machine = eukrea_cpuimx35_init,
205 	.restart	= mxc_restart,
206 MACHINE_END
207