Merge branch 'bkl-removal' of git://git.lwn.net/linux-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 #include <linux/io.h>
25
26 #include <mach/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/flash.h>
31
32 #include <mach/gpio.h>
33 #include <mach/mux.h>
34 #include <mach/board.h>
35 #include <mach/common.h>
36 #include <mach/gpmc.h>
37
38
39 #define SDP2430_FLASH_CS        0
40 #define SDP2430_SMC91X_CS       5
41
42 static struct mtd_partition sdp2430_partitions[] = {
43         /* bootloader (U-Boot, etc) in first sector */
44         {
45                 .name           = "bootloader",
46                 .offset         = 0,
47                 .size           = SZ_256K,
48                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
49          },
50         /* bootloader params in the next sector */
51         {
52                 .name           = "params",
53                 .offset         = MTDPART_OFS_APPEND,
54                 .size           = SZ_128K,
55                 .mask_flags     = 0,
56          },
57         /* kernel */
58         {
59                 .name           = "kernel",
60                 .offset         = MTDPART_OFS_APPEND,
61                 .size           = SZ_2M,
62                 .mask_flags     = 0
63         },
64         /* file system */
65         {
66                 .name           = "filesystem",
67                 .offset         = MTDPART_OFS_APPEND,
68                 .size           = MTDPART_SIZ_FULL,
69                 .mask_flags     = 0
70         }
71 };
72
73 static struct flash_platform_data sdp2430_flash_data = {
74         .map_name       = "cfi_probe",
75         .width          = 2,
76         .parts          = sdp2430_partitions,
77         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
78 };
79
80 static struct resource sdp2430_flash_resource = {
81         .start          = SDP2430_CS0_BASE,
82         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
83         .flags          = IORESOURCE_MEM,
84 };
85
86 static struct platform_device sdp2430_flash_device = {
87         .name           = "omapflash",
88         .id             = 0,
89         .dev = {
90                 .platform_data  = &sdp2430_flash_data,
91         },
92         .num_resources  = 1,
93         .resource       = &sdp2430_flash_resource,
94 };
95
96 static struct resource sdp2430_smc91x_resources[] = {
97         [0] = {
98                 .start  = SDP2430_CS0_BASE,
99                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
100                 .flags  = IORESOURCE_MEM,
101         },
102         [1] = {
103                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
104                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
105                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
106         },
107 };
108
109 static struct platform_device sdp2430_smc91x_device = {
110         .name           = "smc91x",
111         .id             = -1,
112         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
113         .resource       = sdp2430_smc91x_resources,
114 };
115
116 static struct platform_device *sdp2430_devices[] __initdata = {
117         &sdp2430_smc91x_device,
118         &sdp2430_flash_device,
119 };
120
121 static inline void __init sdp2430_init_smc91x(void)
122 {
123         int eth_cs;
124         unsigned long cs_mem_base;
125         unsigned int rate;
126         struct clk *gpmc_fck;
127
128         eth_cs = SDP2430_SMC91X_CS;
129
130         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
131         if (IS_ERR(gpmc_fck)) {
132                 WARN_ON(1);
133                 return;
134         }
135
136         clk_enable(gpmc_fck);
137         rate = clk_get_rate(gpmc_fck);
138
139         /* Make sure CS1 timings are correct, for 2430 always muxed */
140         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
141
142         if (rate >= 160000000) {
143                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
144                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
145                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
146                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
147                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
148         } else if (rate >= 130000000) {
149                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
153                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
154         } else { /* rate = 100000000 */
155                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
156                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
159                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
160         }
161
162         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
163                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
164                 goto out;
165         }
166
167         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
168         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
169         udelay(100);
170
171         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
172                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
173                         OMAP24XX_ETHR_GPIO_IRQ);
174                 gpmc_cs_free(eth_cs);
175                 goto out;
176         }
177         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
178
179 out:
180         clk_disable(gpmc_fck);
181         clk_put(gpmc_fck);
182 }
183
184 static void __init omap_2430sdp_init_irq(void)
185 {
186         omap2_init_common_hw();
187         omap_init_irq();
188         omap_gpio_init();
189         sdp2430_init_smc91x();
190 }
191
192 static struct omap_uart_config sdp2430_uart_config __initdata = {
193         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
194 };
195
196 static struct omap_board_config_kernel sdp2430_config[] = {
197         {OMAP_TAG_UART, &sdp2430_uart_config},
198 };
199
200 static void __init omap_2430sdp_init(void)
201 {
202         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
203         omap_board_config = sdp2430_config;
204         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
205         omap_serial_init();
206 }
207
208 static void __init omap_2430sdp_map_io(void)
209 {
210         omap2_set_globals_243x();
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