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Linux/arch/arm/mach-imx/mach-cpuimx35.c

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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 "eukrea-baseboards.h"
 43 #include "hardware.h"
 44 #include "iomux-mx35.h"
 45 
 46 static const struct imxuart_platform_data uart_pdata __initconst = {
 47         .flags = IMXUART_HAVE_RTSCTS,
 48 };
 49 
 50 static const struct imxi2c_platform_data
 51                 eukrea_cpuimx35_i2c0_data __initconst = {
 52         .bitrate =              100000,
 53 };
 54 
 55 #define TSC2007_IRQGPIO         IMX_GPIO_NR(3, 2)
 56 static int tsc2007_get_pendown_state(struct device *dev)
 57 {
 58         return !gpio_get_value(TSC2007_IRQGPIO);
 59 }
 60 
 61 static struct tsc2007_platform_data tsc2007_info = {
 62         .model                  = 2007,
 63         .x_plate_ohms           = 180,
 64         .get_pendown_state = tsc2007_get_pendown_state,
 65 };
 66 
 67 static struct i2c_board_info eukrea_cpuimx35_i2c_devices[] = {
 68         {
 69                 I2C_BOARD_INFO("pcf8563", 0x51),
 70         }, {
 71                 I2C_BOARD_INFO("tsc2007", 0x48),
 72                 .platform_data  = &tsc2007_info,
 73                 /* irq number is run-time assigned */
 74         },
 75 };
 76 
 77 static iomux_v3_cfg_t eukrea_cpuimx35_pads[] = {
 78         /* UART1 */
 79         MX35_PAD_CTS1__UART1_CTS,
 80         MX35_PAD_RTS1__UART1_RTS,
 81         MX35_PAD_TXD1__UART1_TXD_MUX,
 82         MX35_PAD_RXD1__UART1_RXD_MUX,
 83         /* FEC */
 84         MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
 85         MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
 86         MX35_PAD_FEC_RX_DV__FEC_RX_DV,
 87         MX35_PAD_FEC_COL__FEC_COL,
 88         MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
 89         MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
 90         MX35_PAD_FEC_TX_EN__FEC_TX_EN,
 91         MX35_PAD_FEC_MDC__FEC_MDC,
 92         MX35_PAD_FEC_MDIO__FEC_MDIO,
 93         MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
 94         MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
 95         MX35_PAD_FEC_CRS__FEC_CRS,
 96         MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
 97         MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
 98         MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
 99         MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
100         MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
101         MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
102         /* I2C1 */
103         MX35_PAD_I2C1_CLK__I2C1_SCL,
104         MX35_PAD_I2C1_DAT__I2C1_SDA,
105         /* TSC2007 IRQ */
106         MX35_PAD_ATA_DA2__GPIO3_2,
107 };
108 
109 static const struct mxc_nand_platform_data
110                 eukrea_cpuimx35_nand_board_info __initconst = {
111         .width          = 1,
112         .hw_ecc         = 1,
113         .flash_bbt      = 1,
114 };
115 
116 static int eukrea_cpuimx35_otg_init(struct platform_device *pdev)
117 {
118         return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
119 }
120 
121 static const struct mxc_usbh_platform_data otg_pdata __initconst = {
122         .init   = eukrea_cpuimx35_otg_init,
123         .portsc = MXC_EHCI_MODE_UTMI,
124 };
125 
126 static int eukrea_cpuimx35_usbh1_init(struct platform_device *pdev)
127 {
128         return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_SINGLE_UNI |
129                         MXC_EHCI_INTERNAL_PHY | MXC_EHCI_IPPUE_DOWN);
130 }
131 
132 static const struct mxc_usbh_platform_data usbh1_pdata __initconst = {
133         .init   = eukrea_cpuimx35_usbh1_init,
134         .portsc = MXC_EHCI_MODE_SERIAL,
135 };
136 
137 static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
138         .operating_mode = FSL_USB2_DR_DEVICE,
139         .phy_mode       = FSL_USB2_PHY_UTMI,
140         .workaround     = FLS_USB2_WORKAROUND_ENGCM09152,
141 };
142 
143 static bool otg_mode_host __initdata;
144 
145 static int __init eukrea_cpuimx35_otg_mode(char *options)
146 {
147         if (!strcmp(options, "host"))
148                 otg_mode_host = true;
149         else if (!strcmp(options, "device"))
150                 otg_mode_host = false;
151         else
152                 pr_info("otg_mode neither \"host\" nor \"device\". "
153                         "Defaulting to device\n");
154         return 1;
155 }
156 __setup("otg_mode=", eukrea_cpuimx35_otg_mode);
157 
158 /*
159  * Board specific initialization.
160  */
161 static void __init eukrea_cpuimx35_init(void)
162 {
163         imx35_soc_init();
164 
165         mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx35_pads,
166                         ARRAY_SIZE(eukrea_cpuimx35_pads));
167 
168         imx35_add_fec(NULL);
169         imx35_add_imx2_wdt();
170 
171         imx35_add_imx_uart0(&uart_pdata);
172         imx35_add_mxc_nand(&eukrea_cpuimx35_nand_board_info);
173 
174         eukrea_cpuimx35_i2c_devices[1].irq = gpio_to_irq(TSC2007_IRQGPIO);
175         i2c_register_board_info(0, eukrea_cpuimx35_i2c_devices,
176                         ARRAY_SIZE(eukrea_cpuimx35_i2c_devices));
177         imx35_add_imx_i2c0(&eukrea_cpuimx35_i2c0_data);
178 
179         if (otg_mode_host)
180                 imx35_add_mxc_ehci_otg(&otg_pdata);
181         else
182                 imx35_add_fsl_usb2_udc(&otg_device_pdata);
183 
184         imx35_add_mxc_ehci_hs(&usbh1_pdata);
185 
186 #ifdef CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD
187         eukrea_mbimxsd35_baseboard_init();
188 #endif
189 }
190 
191 static void __init eukrea_cpuimx35_timer_init(void)
192 {
193         mx35_clocks_init();
194 }
195 
196 MACHINE_START(EUKREA_CPUIMX35SD, "Eukrea CPUIMX35")
197         /* Maintainer: Eukrea Electromatique */
198         .atag_offset = 0x100,
199         .map_io = mx35_map_io,
200         .init_early = imx35_init_early,
201         .init_irq = mx35_init_irq,
202         .handle_irq = imx35_handle_irq,
203         .init_time      = eukrea_cpuimx35_timer_init,
204         .init_machine = eukrea_cpuimx35_init,
205         .restart        = mxc_restart,
206 MACHINE_END
207 

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