Merge branches 'imx/pata' and 'imx/sata' into next/driver
[pandora-kernel.git] / arch / arm / mach-mx5 / board-cpuimx51.c
1 /*
2  *
3  * Copyright (C) 2010 Eric Bénard <eric@eukrea.com>
4  *
5  * based on board-mx51_babbage.c which is
6  * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
7  * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com>
8  *
9  * The code contained herein is licensed under the GNU General Public
10  * License. You may obtain a copy of the GNU General Public License
11  * Version 2 or later at the following locations:
12  *
13  * http://www.opensource.org/licenses/gpl-license.html
14  * http://www.gnu.org/copyleft/gpl.html
15  */
16
17 #include <linux/init.h>
18 #include <linux/platform_device.h>
19 #include <linux/serial_8250.h>
20 #include <linux/i2c.h>
21 #include <linux/gpio.h>
22 #include <linux/delay.h>
23 #include <linux/io.h>
24 #include <linux/interrupt.h>
25 #include <linux/irq.h>
26
27 #include <mach/eukrea-baseboards.h>
28 #include <mach/common.h>
29 #include <mach/hardware.h>
30 #include <mach/iomux-mx51.h>
31
32 #include <asm/irq.h>
33 #include <asm/setup.h>
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/time.h>
37
38 #include "devices-imx51.h"
39 #include "devices.h"
40
41 #define CPUIMX51_USBH1_STP      IMX_GPIO_NR(1, 27)
42 #define CPUIMX51_QUARTA_GPIO    IMX_GPIO_NR(3, 28)
43 #define CPUIMX51_QUARTB_GPIO    IMX_GPIO_NR(3, 25)
44 #define CPUIMX51_QUARTC_GPIO    IMX_GPIO_NR(3, 26)
45 #define CPUIMX51_QUARTD_GPIO    IMX_GPIO_NR(3, 27)
46 #define CPUIMX51_QUART_XTAL     14745600
47 #define CPUIMX51_QUART_REGSHIFT 17
48
49 /* USB_CTRL_1 */
50 #define MX51_USB_CTRL_1_OFFSET          0x10
51 #define MX51_USB_CTRL_UH1_EXT_CLK_EN    (1 << 25)
52
53 #define MX51_USB_PLLDIV_12_MHZ          0x00
54 #define MX51_USB_PLL_DIV_19_2_MHZ       0x01
55 #define MX51_USB_PLL_DIV_24_MHZ         0x02
56
57 static struct plat_serial8250_port serial_platform_data[] = {
58         {
59                 .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x400000),
60                 .irq = gpio_to_irq(CPUIMX51_QUARTA_GPIO),
61                 .irqflags = IRQF_TRIGGER_HIGH,
62                 .uartclk = CPUIMX51_QUART_XTAL,
63                 .regshift = CPUIMX51_QUART_REGSHIFT,
64                 .iotype = UPIO_MEM,
65                 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP,
66         }, {
67                 .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x800000),
68                 .irq = gpio_to_irq(CPUIMX51_QUARTB_GPIO),
69                 .irqflags = IRQF_TRIGGER_HIGH,
70                 .uartclk = CPUIMX51_QUART_XTAL,
71                 .regshift = CPUIMX51_QUART_REGSHIFT,
72                 .iotype = UPIO_MEM,
73                 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP,
74         }, {
75                 .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x1000000),
76                 .irq = gpio_to_irq(CPUIMX51_QUARTC_GPIO),
77                 .irqflags = IRQF_TRIGGER_HIGH,
78                 .uartclk = CPUIMX51_QUART_XTAL,
79                 .regshift = CPUIMX51_QUART_REGSHIFT,
80                 .iotype = UPIO_MEM,
81                 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP,
82         }, {
83                 .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x2000000),
84                 .irq = gpio_to_irq(CPUIMX51_QUARTD_GPIO),
85                 .irqflags = IRQF_TRIGGER_HIGH,
86                 .uartclk = CPUIMX51_QUART_XTAL,
87                 .regshift = CPUIMX51_QUART_REGSHIFT,
88                 .iotype = UPIO_MEM,
89                 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP,
90         }, {
91         }
92 };
93
94 static struct platform_device serial_device = {
95         .name = "serial8250",
96         .id = 0,
97         .dev = {
98                 .platform_data = serial_platform_data,
99         },
100 };
101
102 static struct platform_device *devices[] __initdata = {
103         &serial_device,
104 };
105
106 static iomux_v3_cfg_t eukrea_cpuimx51_pads[] = {
107         /* UART1 */
108         MX51_PAD_UART1_RXD__UART1_RXD,
109         MX51_PAD_UART1_TXD__UART1_TXD,
110         MX51_PAD_UART1_RTS__UART1_RTS,
111         MX51_PAD_UART1_CTS__UART1_CTS,
112
113         /* I2C2 */
114         MX51_PAD_GPIO1_2__I2C2_SCL,
115         MX51_PAD_GPIO1_3__I2C2_SDA,
116         MX51_PAD_NANDF_D10__GPIO3_30,
117
118         /* QUART IRQ */
119         MX51_PAD_NANDF_D15__GPIO3_25,
120         MX51_PAD_NANDF_D14__GPIO3_26,
121         MX51_PAD_NANDF_D13__GPIO3_27,
122         MX51_PAD_NANDF_D12__GPIO3_28,
123
124         /* USB HOST1 */
125         MX51_PAD_USBH1_CLK__USBH1_CLK,
126         MX51_PAD_USBH1_DIR__USBH1_DIR,
127         MX51_PAD_USBH1_NXT__USBH1_NXT,
128         MX51_PAD_USBH1_DATA0__USBH1_DATA0,
129         MX51_PAD_USBH1_DATA1__USBH1_DATA1,
130         MX51_PAD_USBH1_DATA2__USBH1_DATA2,
131         MX51_PAD_USBH1_DATA3__USBH1_DATA3,
132         MX51_PAD_USBH1_DATA4__USBH1_DATA4,
133         MX51_PAD_USBH1_DATA5__USBH1_DATA5,
134         MX51_PAD_USBH1_DATA6__USBH1_DATA6,
135         MX51_PAD_USBH1_DATA7__USBH1_DATA7,
136         MX51_PAD_USBH1_STP__USBH1_STP,
137 };
138
139 static const struct mxc_nand_platform_data
140                 eukrea_cpuimx51_nand_board_info __initconst = {
141         .width          = 1,
142         .hw_ecc         = 1,
143         .flash_bbt      = 1,
144 };
145
146 static const struct imxuart_platform_data uart_pdata __initconst = {
147         .flags = IMXUART_HAVE_RTSCTS,
148 };
149
150 static const
151 struct imxi2c_platform_data eukrea_cpuimx51_i2c_data __initconst = {
152         .bitrate = 100000,
153 };
154
155 static struct i2c_board_info eukrea_cpuimx51_i2c_devices[] = {
156         {
157                 I2C_BOARD_INFO("pcf8563", 0x51),
158         },
159 };
160
161 /* This function is board specific as the bit mask for the plldiv will also
162 be different for other Freescale SoCs, thus a common bitmask is not
163 possible and cannot get place in /plat-mxc/ehci.c.*/
164 static int initialize_otg_port(struct platform_device *pdev)
165 {
166         u32 v;
167         void __iomem *usb_base;
168         void __iomem *usbother_base;
169
170         usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
171         if (!usb_base)
172                 return -ENOMEM;
173         usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
174
175         /* Set the PHY clock to 19.2MHz */
176         v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
177         v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
178         v |= MX51_USB_PLL_DIV_19_2_MHZ;
179         __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
180         iounmap(usb_base);
181
182         mdelay(10);
183
184         return mx51_initialize_usb_hw(0, MXC_EHCI_INTERNAL_PHY);
185 }
186
187 static int initialize_usbh1_port(struct platform_device *pdev)
188 {
189         u32 v;
190         void __iomem *usb_base;
191         void __iomem *usbother_base;
192
193         usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
194         if (!usb_base)
195                 return -ENOMEM;
196         usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
197
198         /* The clock for the USBH1 ULPI port will come externally from the PHY. */
199         v = __raw_readl(usbother_base + MX51_USB_CTRL_1_OFFSET);
200         __raw_writel(v | MX51_USB_CTRL_UH1_EXT_CLK_EN, usbother_base + MX51_USB_CTRL_1_OFFSET);
201         iounmap(usb_base);
202
203         mdelay(10);
204
205         return mx51_initialize_usb_hw(1, MXC_EHCI_POWER_PINS_ENABLED |
206                         MXC_EHCI_ITC_NO_THRESHOLD);
207 }
208
209 static struct mxc_usbh_platform_data dr_utmi_config = {
210         .init           = initialize_otg_port,
211         .portsc = MXC_EHCI_UTMI_16BIT,
212 };
213
214 static struct fsl_usb2_platform_data usb_pdata = {
215         .operating_mode = FSL_USB2_DR_DEVICE,
216         .phy_mode       = FSL_USB2_PHY_UTMI_WIDE,
217 };
218
219 static struct mxc_usbh_platform_data usbh1_config = {
220         .init           = initialize_usbh1_port,
221         .portsc = MXC_EHCI_MODE_ULPI,
222 };
223
224 static int otg_mode_host;
225
226 static int __init eukrea_cpuimx51_otg_mode(char *options)
227 {
228         if (!strcmp(options, "host"))
229                 otg_mode_host = 1;
230         else if (!strcmp(options, "device"))
231                 otg_mode_host = 0;
232         else
233                 pr_info("otg_mode neither \"host\" nor \"device\". "
234                         "Defaulting to device\n");
235         return 0;
236 }
237 __setup("otg_mode=", eukrea_cpuimx51_otg_mode);
238
239 /*
240  * Board specific initialization.
241  */
242 static void __init eukrea_cpuimx51_init(void)
243 {
244         imx51_soc_init();
245
246         mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51_pads,
247                                         ARRAY_SIZE(eukrea_cpuimx51_pads));
248
249         imx51_add_imx_uart(0, &uart_pdata);
250         imx51_add_mxc_nand(&eukrea_cpuimx51_nand_board_info);
251
252         gpio_request(CPUIMX51_QUARTA_GPIO, "quarta_irq");
253         gpio_direction_input(CPUIMX51_QUARTA_GPIO);
254         gpio_free(CPUIMX51_QUARTA_GPIO);
255         gpio_request(CPUIMX51_QUARTB_GPIO, "quartb_irq");
256         gpio_direction_input(CPUIMX51_QUARTB_GPIO);
257         gpio_free(CPUIMX51_QUARTB_GPIO);
258         gpio_request(CPUIMX51_QUARTC_GPIO, "quartc_irq");
259         gpio_direction_input(CPUIMX51_QUARTC_GPIO);
260         gpio_free(CPUIMX51_QUARTC_GPIO);
261         gpio_request(CPUIMX51_QUARTD_GPIO, "quartd_irq");
262         gpio_direction_input(CPUIMX51_QUARTD_GPIO);
263         gpio_free(CPUIMX51_QUARTD_GPIO);
264
265         imx51_add_fec(NULL);
266         platform_add_devices(devices, ARRAY_SIZE(devices));
267
268         imx51_add_imx_i2c(1, &eukrea_cpuimx51_i2c_data);
269         i2c_register_board_info(1, eukrea_cpuimx51_i2c_devices,
270                                 ARRAY_SIZE(eukrea_cpuimx51_i2c_devices));
271
272         if (otg_mode_host)
273                 mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
274         else {
275                 initialize_otg_port(NULL);
276                 mxc_register_device(&mxc_usbdr_udc_device, &usb_pdata);
277         }
278         mxc_register_device(&mxc_usbh1_device, &usbh1_config);
279
280 #ifdef CONFIG_MACH_EUKREA_MBIMX51_BASEBOARD
281         eukrea_mbimx51_baseboard_init();
282 #endif
283 }
284
285 static void __init eukrea_cpuimx51_timer_init(void)
286 {
287         mx51_clocks_init(32768, 24000000, 22579200, 0);
288 }
289
290 static struct sys_timer mxc_timer = {
291         .init   = eukrea_cpuimx51_timer_init,
292 };
293
294 MACHINE_START(EUKREA_CPUIMX51, "Eukrea CPUIMX51 Module")
295         /* Maintainer: Eric Bénard <eric@eukrea.com> */
296         .boot_params = MX51_PHYS_OFFSET + 0x100,
297         .map_io = mx51_map_io,
298         .init_early = imx51_init_early,
299         .init_irq = mx51_init_irq,
300         .timer = &mxc_timer,
301         .init_machine = eukrea_cpuimx51_init,
302 MACHINE_END