Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa...
[linux-2.6] / arch / arm / mach-omap2 / board-2430sdp.c
1 /*
2  * linux/arch/arm/mach-omap2/board-2430sdp.c
3  *
4  * Copyright (C) 2006 Texas Instruments
5  *
6  * Modified from mach-omap2/board-generic.c
7  *
8  * Initial Code : Based on a patch from Komal Shah and Richard Woodruff
9  * Updated the Code for 2430 SDP : Syed Mohammed Khasim
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  */
15
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/platform_device.h>
19 #include <linux/mtd/mtd.h>
20 #include <linux/mtd/partitions.h>
21 #include <linux/delay.h>
22 #include <linux/i2c/twl4030.h>
23 #include <linux/err.h>
24 #include <linux/clk.h>
25 #include <linux/io.h>
26
27 #include <mach/hardware.h>
28 #include <asm/mach-types.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/flash.h>
32
33 #include <mach/gpio.h>
34 #include <mach/mux.h>
35 #include <mach/board.h>
36 #include <mach/common.h>
37 #include <mach/gpmc.h>
38
39 #include "mmc-twl4030.h"
40
41 #define SDP2430_FLASH_CS        0
42 #define SDP2430_SMC91X_CS       5
43
44 static struct mtd_partition sdp2430_partitions[] = {
45         /* bootloader (U-Boot, etc) in first sector */
46         {
47                 .name           = "bootloader",
48                 .offset         = 0,
49                 .size           = SZ_256K,
50                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
51          },
52         /* bootloader params in the next sector */
53         {
54                 .name           = "params",
55                 .offset         = MTDPART_OFS_APPEND,
56                 .size           = SZ_128K,
57                 .mask_flags     = 0,
58          },
59         /* kernel */
60         {
61                 .name           = "kernel",
62                 .offset         = MTDPART_OFS_APPEND,
63                 .size           = SZ_2M,
64                 .mask_flags     = 0
65         },
66         /* file system */
67         {
68                 .name           = "filesystem",
69                 .offset         = MTDPART_OFS_APPEND,
70                 .size           = MTDPART_SIZ_FULL,
71                 .mask_flags     = 0
72         }
73 };
74
75 static struct flash_platform_data sdp2430_flash_data = {
76         .map_name       = "cfi_probe",
77         .width          = 2,
78         .parts          = sdp2430_partitions,
79         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
80 };
81
82 static struct resource sdp2430_flash_resource = {
83         .start          = SDP2430_CS0_BASE,
84         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
85         .flags          = IORESOURCE_MEM,
86 };
87
88 static struct platform_device sdp2430_flash_device = {
89         .name           = "omapflash",
90         .id             = 0,
91         .dev = {
92                 .platform_data  = &sdp2430_flash_data,
93         },
94         .num_resources  = 1,
95         .resource       = &sdp2430_flash_resource,
96 };
97
98 static struct resource sdp2430_smc91x_resources[] = {
99         [0] = {
100                 .start  = SDP2430_CS0_BASE,
101                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
102                 .flags  = IORESOURCE_MEM,
103         },
104         [1] = {
105                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
106                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
107                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
108         },
109 };
110
111 static struct platform_device sdp2430_smc91x_device = {
112         .name           = "smc91x",
113         .id             = -1,
114         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
115         .resource       = sdp2430_smc91x_resources,
116 };
117
118 static struct platform_device *sdp2430_devices[] __initdata = {
119         &sdp2430_smc91x_device,
120         &sdp2430_flash_device,
121 };
122
123 static inline void __init sdp2430_init_smc91x(void)
124 {
125         int eth_cs;
126         unsigned long cs_mem_base;
127         unsigned int rate;
128         struct clk *gpmc_fck;
129
130         eth_cs = SDP2430_SMC91X_CS;
131
132         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
133         if (IS_ERR(gpmc_fck)) {
134                 WARN_ON(1);
135                 return;
136         }
137
138         clk_enable(gpmc_fck);
139         rate = clk_get_rate(gpmc_fck);
140
141         /* Make sure CS1 timings are correct, for 2430 always muxed */
142         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
143
144         if (rate >= 160000000) {
145                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
146                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
147                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
148                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
149                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
150         } else if (rate >= 130000000) {
151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
153                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
154                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
155                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
156         } else { /* rate = 100000000 */
157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
159                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
160                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
161                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
162         }
163
164         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
165                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
166                 goto out;
167         }
168
169         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
170         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
171         udelay(100);
172
173         if (gpio_request(OMAP24XX_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
174                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
175                         OMAP24XX_ETHR_GPIO_IRQ);
176                 gpmc_cs_free(eth_cs);
177                 goto out;
178         }
179         gpio_direction_input(OMAP24XX_ETHR_GPIO_IRQ);
180
181 out:
182         clk_disable(gpmc_fck);
183         clk_put(gpmc_fck);
184 }
185
186 static void __init omap_2430sdp_init_irq(void)
187 {
188         omap2_init_common_hw();
189         omap_init_irq();
190         omap_gpio_init();
191         sdp2430_init_smc91x();
192 }
193
194 static struct omap_uart_config sdp2430_uart_config __initdata = {
195         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
196 };
197
198 static struct omap_board_config_kernel sdp2430_config[] = {
199         {OMAP_TAG_UART, &sdp2430_uart_config},
200 };
201
202
203 static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
204         .gpio_base      = OMAP_MAX_GPIO_LINES,
205         .irq_base       = TWL4030_GPIO_IRQ_BASE,
206         .irq_end        = TWL4030_GPIO_IRQ_END,
207 };
208
209 static struct twl4030_platform_data sdp2430_twldata = {
210         .irq_base       = TWL4030_IRQ_BASE,
211         .irq_end        = TWL4030_IRQ_END,
212
213         /* platform_data for children goes here */
214         .gpio           = &sdp2430_gpio_data,
215 };
216
217 static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
218         {
219                 I2C_BOARD_INFO("twl4030", 0x48),
220                 .flags = I2C_CLIENT_WAKE,
221                 .irq = INT_24XX_SYS_NIRQ,
222                 .platform_data = &sdp2430_twldata,
223         },
224 };
225
226 static int __init omap2430_i2c_init(void)
227 {
228         omap_register_i2c_bus(1, 400, NULL, 0);
229         omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
230                         ARRAY_SIZE(sdp2430_i2c_boardinfo));
231         return 0;
232 }
233
234 static struct twl4030_hsmmc_info mmc[] __initdata = {
235         {
236                 .mmc            = 1,
237                 .wires          = 4,
238                 .gpio_cd        = -EINVAL,
239                 .gpio_wp        = -EINVAL,
240                 .ext_clock      = 1,
241         },
242         {}      /* Terminator */
243 };
244
245 static void __init omap_2430sdp_init(void)
246 {
247         omap2430_i2c_init();
248
249         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
250         omap_board_config = sdp2430_config;
251         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
252         omap_serial_init();
253         twl4030_mmc_init(mmc);
254 }
255
256 static void __init omap_2430sdp_map_io(void)
257 {
258         omap2_set_globals_243x();
259         omap2_map_common_io();
260 }
261
262 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
263         /* Maintainer: Syed Khasim - Texas Instruments Inc */
264         .phys_io        = 0x48000000,
265         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
266         .boot_params    = 0x80000100,
267         .map_io         = omap_2430sdp_map_io,
268         .init_irq       = omap_2430sdp_init_irq,
269         .init_machine   = omap_2430sdp_init,
270         .timer          = &omap_timer,
271 MACHINE_END