Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
[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 #include <linux/fsl_devices.h>
27
28 #include <mach/eukrea-baseboards.h>
29 #include <mach/common.h>
30 #include <mach/hardware.h>
31 #include <mach/imx-uart.h>
32 #include <mach/iomux-mx51.h>
33 #include <mach/i2c.h>
34 #include <mach/mxc_ehci.h>
35
36 #include <asm/irq.h>
37 #include <asm/setup.h>
38 #include <asm/mach-types.h>
39 #include <asm/mach/arch.h>
40 #include <asm/mach/time.h>
41
42 #include "devices.h"
43
44 #define CPUIMX51_USBH1_STP      (0*32 + 27)
45 #define CPUIMX51_QUARTA_GPIO    (2*32 + 28)
46 #define CPUIMX51_QUARTB_GPIO    (2*32 + 25)
47 #define CPUIMX51_QUARTC_GPIO    (2*32 + 26)
48 #define CPUIMX51_QUARTD_GPIO    (2*32 + 27)
49 #define CPUIMX51_QUARTA_IRQ     (MXC_INTERNAL_IRQS + CPUIMX51_QUARTA_GPIO)
50 #define CPUIMX51_QUARTB_IRQ     (MXC_INTERNAL_IRQS + CPUIMX51_QUARTB_GPIO)
51 #define CPUIMX51_QUARTC_IRQ     (MXC_INTERNAL_IRQS + CPUIMX51_QUARTC_GPIO)
52 #define CPUIMX51_QUARTD_IRQ     (MXC_INTERNAL_IRQS + CPUIMX51_QUARTD_GPIO)
53 #define CPUIMX51_QUART_XTAL     14745600
54 #define CPUIMX51_QUART_REGSHIFT 17
55
56 /* USB_CTRL_1 */
57 #define MX51_USB_CTRL_1_OFFSET          0x10
58 #define MX51_USB_CTRL_UH1_EXT_CLK_EN    (1 << 25)
59
60 #define MX51_USB_PLLDIV_12_MHZ          0x00
61 #define MX51_USB_PLL_DIV_19_2_MHZ       0x01
62 #define MX51_USB_PLL_DIV_24_MHZ         0x02
63
64 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
65 static struct plat_serial8250_port serial_platform_data[] = {
66         {
67                 .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x400000),
68                 .irq = CPUIMX51_QUARTA_IRQ,
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 + 0x800000),
76                 .irq = CPUIMX51_QUARTB_IRQ,
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 + 0x1000000),
84                 .irq = CPUIMX51_QUARTC_IRQ,
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                 .mapbase = (unsigned long)(MX51_CS1_BASE_ADDR + 0x2000000),
92                 .irq = CPUIMX51_QUARTD_IRQ,
93                 .irqflags = IRQF_TRIGGER_HIGH,
94                 .uartclk = CPUIMX51_QUART_XTAL,
95                 .regshift = CPUIMX51_QUART_REGSHIFT,
96                 .iotype = UPIO_MEM,
97                 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP,
98         }, {
99         }
100 };
101
102 static struct platform_device serial_device = {
103         .name = "serial8250",
104         .id = 0,
105         .dev = {
106                 .platform_data = serial_platform_data,
107         },
108 };
109 #endif
110
111 static struct platform_device *devices[] __initdata = {
112         &mxc_fec_device,
113 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
114         &serial_device,
115 #endif
116 };
117
118 static struct pad_desc eukrea_cpuimx51_pads[] = {
119         /* UART1 */
120         MX51_PAD_UART1_RXD__UART1_RXD,
121         MX51_PAD_UART1_TXD__UART1_TXD,
122         MX51_PAD_UART1_RTS__UART1_RTS,
123         MX51_PAD_UART1_CTS__UART1_CTS,
124
125         /* I2C2 */
126         MX51_PAD_GPIO_1_2__I2C2_SCL,
127         MX51_PAD_GPIO_1_3__I2C2_SDA,
128         MX51_PAD_NANDF_D10__GPIO_3_30,
129
130         /* QUART IRQ */
131         MX51_PAD_NANDF_D15__GPIO_3_25,
132         MX51_PAD_NANDF_D14__GPIO_3_26,
133         MX51_PAD_NANDF_D13__GPIO_3_27,
134         MX51_PAD_NANDF_D12__GPIO_3_28,
135
136         /* USB HOST1 */
137         MX51_PAD_USBH1_CLK__USBH1_CLK,
138         MX51_PAD_USBH1_DIR__USBH1_DIR,
139         MX51_PAD_USBH1_NXT__USBH1_NXT,
140         MX51_PAD_USBH1_DATA0__USBH1_DATA0,
141         MX51_PAD_USBH1_DATA1__USBH1_DATA1,
142         MX51_PAD_USBH1_DATA2__USBH1_DATA2,
143         MX51_PAD_USBH1_DATA3__USBH1_DATA3,
144         MX51_PAD_USBH1_DATA4__USBH1_DATA4,
145         MX51_PAD_USBH1_DATA5__USBH1_DATA5,
146         MX51_PAD_USBH1_DATA6__USBH1_DATA6,
147         MX51_PAD_USBH1_DATA7__USBH1_DATA7,
148         MX51_PAD_USBH1_STP__USBH1_STP,
149 };
150
151 static struct imxuart_platform_data uart_pdata = {
152         .flags = IMXUART_HAVE_RTSCTS,
153 };
154
155 static struct imxi2c_platform_data eukrea_cpuimx51_i2c_data = {
156         .bitrate = 100000,
157 };
158
159 static struct i2c_board_info eukrea_cpuimx51_i2c_devices[] = {
160         {
161                 I2C_BOARD_INFO("pcf8563", 0x51),
162         },
163 };
164
165 /* This function is board specific as the bit mask for the plldiv will also
166 be different for other Freescale SoCs, thus a common bitmask is not
167 possible and cannot get place in /plat-mxc/ehci.c.*/
168 static int initialize_otg_port(struct platform_device *pdev)
169 {
170         u32 v;
171         void __iomem *usb_base;
172         void __iomem *usbother_base;
173
174         usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
175         usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
176
177         /* Set the PHY clock to 19.2MHz */
178         v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
179         v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
180         v |= MX51_USB_PLL_DIV_19_2_MHZ;
181         __raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
182         iounmap(usb_base);
183         return 0;
184 }
185
186 static int initialize_usbh1_port(struct platform_device *pdev)
187 {
188         u32 v;
189         void __iomem *usb_base;
190         void __iomem *usbother_base;
191
192         usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
193         usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
194
195         /* The clock for the USBH1 ULPI port will come externally from the PHY. */
196         v = __raw_readl(usbother_base + MX51_USB_CTRL_1_OFFSET);
197         __raw_writel(v | MX51_USB_CTRL_UH1_EXT_CLK_EN, usbother_base + MX51_USB_CTRL_1_OFFSET);
198         iounmap(usb_base);
199         return 0;
200 }
201
202 static struct mxc_usbh_platform_data dr_utmi_config = {
203         .init           = initialize_otg_port,
204         .portsc = MXC_EHCI_UTMI_16BIT,
205         .flags  = MXC_EHCI_INTERNAL_PHY,
206 };
207
208 static struct fsl_usb2_platform_data usb_pdata = {
209         .operating_mode = FSL_USB2_DR_DEVICE,
210         .phy_mode       = FSL_USB2_PHY_UTMI_WIDE,
211 };
212
213 static struct mxc_usbh_platform_data usbh1_config = {
214         .init           = initialize_usbh1_port,
215         .portsc = MXC_EHCI_MODE_ULPI,
216         .flags  = (MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_ITC_NO_THRESHOLD),
217 };
218
219 static int otg_mode_host;
220
221 static int __init eukrea_cpuimx51_otg_mode(char *options)
222 {
223         if (!strcmp(options, "host"))
224                 otg_mode_host = 1;
225         else if (!strcmp(options, "device"))
226                 otg_mode_host = 0;
227         else
228                 pr_info("otg_mode neither \"host\" nor \"device\". "
229                         "Defaulting to device\n");
230         return 0;
231 }
232 __setup("otg_mode=", eukrea_cpuimx51_otg_mode);
233
234 /*
235  * Board specific initialization.
236  */
237 static void __init eukrea_cpuimx51_init(void)
238 {
239         mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51_pads,
240                                         ARRAY_SIZE(eukrea_cpuimx51_pads));
241
242         mxc_register_device(&mxc_uart_device0, &uart_pdata);
243         gpio_request(CPUIMX51_QUARTA_GPIO, "quarta_irq");
244         gpio_direction_input(CPUIMX51_QUARTA_GPIO);
245         gpio_free(CPUIMX51_QUARTA_GPIO);
246         gpio_request(CPUIMX51_QUARTB_GPIO, "quartb_irq");
247         gpio_direction_input(CPUIMX51_QUARTB_GPIO);
248         gpio_free(CPUIMX51_QUARTB_GPIO);
249         gpio_request(CPUIMX51_QUARTC_GPIO, "quartc_irq");
250         gpio_direction_input(CPUIMX51_QUARTC_GPIO);
251         gpio_free(CPUIMX51_QUARTC_GPIO);
252         gpio_request(CPUIMX51_QUARTD_GPIO, "quartd_irq");
253         gpio_direction_input(CPUIMX51_QUARTD_GPIO);
254         gpio_free(CPUIMX51_QUARTD_GPIO);
255
256         platform_add_devices(devices, ARRAY_SIZE(devices));
257
258         mxc_register_device(&mxc_i2c_device1, &eukrea_cpuimx51_i2c_data);
259         i2c_register_board_info(1, eukrea_cpuimx51_i2c_devices,
260                                 ARRAY_SIZE(eukrea_cpuimx51_i2c_devices));
261
262         if (otg_mode_host)
263                 mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
264         else {
265                 initialize_otg_port(NULL);
266                 mxc_register_device(&mxc_usbdr_udc_device, &usb_pdata);
267         }
268         mxc_register_device(&mxc_usbh1_device, &usbh1_config);
269
270 #ifdef CONFIG_MACH_EUKREA_MBIMX51_BASEBOARD
271         eukrea_mbimx51_baseboard_init();
272 #endif
273 }
274
275 static void __init eukrea_cpuimx51_timer_init(void)
276 {
277         mx51_clocks_init(32768, 24000000, 22579200, 0);
278 }
279
280 static struct sys_timer mxc_timer = {
281         .init   = eukrea_cpuimx51_timer_init,
282 };
283
284 MACHINE_START(EUKREA_CPUIMX51, "Eukrea CPUIMX51 Module")
285         /* Maintainer: Eric Bénard <eric@eukrea.com> */
286         .phys_io = MX51_AIPS1_BASE_ADDR,
287         .io_pg_offst = ((MX51_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
288         .boot_params = PHYS_OFFSET + 0x100,
289         .map_io = mx51_map_io,
290         .init_irq = mx51_init_irq,
291         .init_machine = eukrea_cpuimx51_init,
292         .timer = &mxc_timer,
293 MACHINE_END