Merge branch 'release' of git://lm-sensors.org/kernel/mhoffman/hwmon-2.6
[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/err.h>
23 #include <linux/clk.h>
24
25 #include <asm/hardware.h>
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/flash.h>
30
31 #include <asm/arch/gpio.h>
32 #include <asm/arch/mux.h>
33 #include <asm/arch/board.h>
34 #include <asm/arch/common.h>
35 #include <asm/arch/gpmc.h>
36
37 #include <asm/io.h>
38
39
40 #define SDP2430_FLASH_CS        0
41 #define SDP2430_SMC91X_CS       5
42
43 static struct mtd_partition sdp2430_partitions[] = {
44         /* bootloader (U-Boot, etc) in first sector */
45         {
46                 .name           = "bootloader",
47                 .offset         = 0,
48                 .size           = SZ_256K,
49                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
50          },
51         /* bootloader params in the next sector */
52         {
53                 .name           = "params",
54                 .offset         = MTDPART_OFS_APPEND,
55                 .size           = SZ_128K,
56                 .mask_flags     = 0,
57          },
58         /* kernel */
59         {
60                 .name           = "kernel",
61                 .offset         = MTDPART_OFS_APPEND,
62                 .size           = SZ_2M,
63                 .mask_flags     = 0
64         },
65         /* file system */
66         {
67                 .name           = "filesystem",
68                 .offset         = MTDPART_OFS_APPEND,
69                 .size           = MTDPART_SIZ_FULL,
70                 .mask_flags     = 0
71         }
72 };
73
74 static struct flash_platform_data sdp2430_flash_data = {
75         .map_name       = "cfi_probe",
76         .width          = 2,
77         .parts          = sdp2430_partitions,
78         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
79 };
80
81 static struct resource sdp2430_flash_resource = {
82         .start          = SDP2430_CS0_BASE,
83         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
84         .flags          = IORESOURCE_MEM,
85 };
86
87 static struct platform_device sdp2430_flash_device = {
88         .name           = "omapflash",
89         .id             = 0,
90         .dev = {
91                 .platform_data  = &sdp2430_flash_data,
92         },
93         .num_resources  = 1,
94         .resource       = &sdp2430_flash_resource,
95 };
96
97 static struct resource sdp2430_smc91x_resources[] = {
98         [0] = {
99                 .start  = SDP2430_CS0_BASE,
100                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
101                 .flags  = IORESOURCE_MEM,
102         },
103         [1] = {
104                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
105                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
106                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
107         },
108 };
109
110 static struct platform_device sdp2430_smc91x_device = {
111         .name           = "smc91x",
112         .id             = -1,
113         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
114         .resource       = sdp2430_smc91x_resources,
115 };
116
117 static struct platform_device *sdp2430_devices[] __initdata = {
118         &sdp2430_smc91x_device,
119         &sdp2430_flash_device,
120 };
121
122 static inline void __init sdp2430_init_smc91x(void)
123 {
124         int eth_cs;
125         unsigned long cs_mem_base;
126         unsigned int rate;
127         struct clk *gpmc_fck;
128
129         eth_cs = SDP2430_SMC91X_CS;
130
131         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
132         if (IS_ERR(gpmc_fck)) {
133                 WARN_ON(1);
134                 return;
135         }
136
137         clk_enable(gpmc_fck);
138         rate = clk_get_rate(gpmc_fck);
139
140         /* Make sure CS1 timings are correct, for 2430 always muxed */
141         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
142
143         if (rate >= 160000000) {
144                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
145                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
146                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
147                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
148                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
149         } else if (rate >= 130000000) {
150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
153                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
154                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
155         } else { /* rate = 100000000 */
156                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
159                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
160                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
161         }
162
163         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
164                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
165                 goto out;
166         }
167
168         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
169         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
170         udelay(100);
171
172         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
173                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
174                         OMAP24XX_ETHR_GPIO_IRQ);
175                 gpmc_cs_free(eth_cs);
176                 goto out;
177         }
178         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
179
180 out:
181         clk_disable(gpmc_fck);
182         clk_put(gpmc_fck);
183 }
184
185 static void __init omap_2430sdp_init_irq(void)
186 {
187         omap2_init_common_hw();
188         omap_init_irq();
189         omap_gpio_init();
190         sdp2430_init_smc91x();
191 }
192
193 static struct omap_uart_config sdp2430_uart_config __initdata = {
194         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
195 };
196
197 static struct omap_board_config_kernel sdp2430_config[] = {
198         {OMAP_TAG_UART, &sdp2430_uart_config},
199 };
200
201 static void __init omap_2430sdp_init(void)
202 {
203         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
204         omap_board_config = sdp2430_config;
205         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
206         omap_serial_init();
207 }
208
209 static void __init omap_2430sdp_map_io(void)
210 {
211         omap2_map_common_io();
212 }
213
214 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
215         /* Maintainer: Syed Khasim - Texas Instruments Inc */
216         .phys_io        = 0x48000000,
217         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
218         .boot_params    = 0x80000100,
219         .map_io         = omap_2430sdp_map_io,
220         .init_irq       = omap_2430sdp_init_irq,
221         .init_machine   = omap_2430sdp_init,
222         .timer          = &omap_timer,
223 MACHINE_END