Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
[linux-2.6.git] / arch / arm / mach-davinci / board-dm355-leopard.c
1 /*
2  * DM355 leopard board support
3  *
4  * Based on board-dm355-evm.c
5  *
6  * This file is licensed under the terms of the GNU General Public
7  * License version 2. This program is licensed "as is" without any
8  * warranty of any kind, whether express or implied.
9  */
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/err.h>
13 #include <linux/platform_device.h>
14 #include <linux/mtd/mtd.h>
15 #include <linux/mtd/partitions.h>
16 #include <linux/mtd/nand.h>
17 #include <linux/i2c.h>
18 #include <linux/gpio.h>
19 #include <linux/clk.h>
20 #include <linux/spi/spi.h>
21 #include <linux/spi/eeprom.h>
22
23 #include <asm/mach-types.h>
24 #include <asm/mach/arch.h>
25
26 #include <mach/dm355.h>
27 #include <mach/i2c.h>
28 #include <mach/serial.h>
29 #include <mach/nand.h>
30 #include <mach/mmc.h>
31 #include <mach/usb.h>
32
33 /* NOTE:  this is geared for the standard config, with a socketed
34  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
35  * swap chips, maybe with a different block size, partitioning may
36  * need to be changed.
37  */
38 #define NAND_BLOCK_SIZE         SZ_128K
39
40 static struct mtd_partition davinci_nand_partitions[] = {
41         {
42                 /* UBL (a few copies) plus U-Boot */
43                 .name           = "bootloader",
44                 .offset         = 0,
45                 .size           = 15 * NAND_BLOCK_SIZE,
46                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
47         }, {
48                 /* U-Boot environment */
49                 .name           = "params",
50                 .offset         = MTDPART_OFS_APPEND,
51                 .size           = 1 * NAND_BLOCK_SIZE,
52                 .mask_flags     = 0,
53         }, {
54                 .name           = "kernel",
55                 .offset         = MTDPART_OFS_APPEND,
56                 .size           = SZ_4M,
57                 .mask_flags     = 0,
58         }, {
59                 .name           = "filesystem1",
60                 .offset         = MTDPART_OFS_APPEND,
61                 .size           = SZ_512M,
62                 .mask_flags     = 0,
63         }, {
64                 .name           = "filesystem2",
65                 .offset         = MTDPART_OFS_APPEND,
66                 .size           = MTDPART_SIZ_FULL,
67                 .mask_flags     = 0,
68         }
69         /* two blocks with bad block table (and mirror) at the end */
70 };
71
72 static struct davinci_nand_pdata davinci_nand_data = {
73         .mask_chipsel           = BIT(14),
74         .parts                  = davinci_nand_partitions,
75         .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
76         .ecc_mode               = NAND_ECC_HW_SYNDROME,
77         .options                = NAND_USE_FLASH_BBT,
78 };
79
80 static struct resource davinci_nand_resources[] = {
81         {
82                 .start          = DM355_ASYNC_EMIF_DATA_CE0_BASE,
83                 .end            = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
84                 .flags          = IORESOURCE_MEM,
85         }, {
86                 .start          = DM355_ASYNC_EMIF_CONTROL_BASE,
87                 .end            = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
88                 .flags          = IORESOURCE_MEM,
89         },
90 };
91
92 static struct platform_device davinci_nand_device = {
93         .name                   = "davinci_nand",
94         .id                     = 0,
95
96         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
97         .resource               = davinci_nand_resources,
98
99         .dev                    = {
100                 .platform_data  = &davinci_nand_data,
101         },
102 };
103
104 static struct davinci_i2c_platform_data i2c_pdata = {
105         .bus_freq       = 400   /* kHz */,
106         .bus_delay      = 0     /* usec */,
107 };
108
109 static int leopard_mmc_gpio = -EINVAL;
110
111 static void dm355leopard_mmcsd_gpios(unsigned gpio)
112 {
113         gpio_request(gpio + 0, "mmc0_ro");
114         gpio_request(gpio + 1, "mmc0_cd");
115         gpio_request(gpio + 2, "mmc1_ro");
116         gpio_request(gpio + 3, "mmc1_cd");
117
118         /* we "know" these are input-only so we don't
119          * need to call gpio_direction_input()
120          */
121
122         leopard_mmc_gpio = gpio;
123 }
124
125 static struct i2c_board_info dm355leopard_i2c_info[] = {
126         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
127                 .platform_data = dm355leopard_mmcsd_gpios,
128                 /* plus irq */ },
129         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
130         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
131 };
132
133 static void __init leopard_init_i2c(void)
134 {
135         davinci_init_i2c(&i2c_pdata);
136
137         gpio_request(5, "dm355leopard_msp");
138         gpio_direction_input(5);
139         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
140
141         i2c_register_board_info(1, dm355leopard_i2c_info,
142                         ARRAY_SIZE(dm355leopard_i2c_info));
143 }
144
145 static struct resource dm355leopard_dm9000_rsrc[] = {
146         {
147                 /* addr */
148                 .start  = 0x04000000,
149                 .end    = 0x04000001,
150                 .flags  = IORESOURCE_MEM,
151         }, {
152                 /* data */
153                 .start  = 0x04000016,
154                 .end    = 0x04000017,
155                 .flags  = IORESOURCE_MEM,
156         }, {
157                 .flags  = IORESOURCE_IRQ
158                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
159         },
160 };
161
162 static struct platform_device dm355leopard_dm9000 = {
163         .name           = "dm9000",
164         .id             = -1,
165         .resource       = dm355leopard_dm9000_rsrc,
166         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
167 };
168
169 static struct platform_device *davinci_leopard_devices[] __initdata = {
170         &dm355leopard_dm9000,
171         &davinci_nand_device,
172 };
173
174 static struct davinci_uart_config uart_config __initdata = {
175         .enabled_uarts = (1 << 0),
176 };
177
178 static void __init dm355_leopard_map_io(void)
179 {
180         dm355_init();
181 }
182
183 static int dm355leopard_mmc_get_cd(int module)
184 {
185         if (!gpio_is_valid(leopard_mmc_gpio))
186                 return -ENXIO;
187         /* low == card present */
188         return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
189 }
190
191 static int dm355leopard_mmc_get_ro(int module)
192 {
193         if (!gpio_is_valid(leopard_mmc_gpio))
194                 return -ENXIO;
195         /* high == card's write protect switch active */
196         return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
197 }
198
199 static struct davinci_mmc_config dm355leopard_mmc_config = {
200         .get_cd         = dm355leopard_mmc_get_cd,
201         .get_ro         = dm355leopard_mmc_get_ro,
202         .wires          = 4,
203         .max_freq       = 50000000,
204         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
205 };
206
207 /* Don't connect anything to J10 unless you're only using USB host
208  * mode *and* have to do so with some kind of gender-bender.  If
209  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
210  * the ID pin won't need any help.
211  */
212 #ifdef CONFIG_USB_MUSB_PERIPHERAL
213 #define USB_ID_VALUE    0       /* ID pulled high; *should* float */
214 #else
215 #define USB_ID_VALUE    1       /* ID pulled low */
216 #endif
217
218 static struct spi_eeprom at25640a = {
219         .byte_len       = SZ_64K / 8,
220         .name           = "at25640a",
221         .page_size      = 32,
222         .flags          = EE_ADDR2,
223 };
224
225 static struct spi_board_info dm355_leopard_spi_info[] __initconst = {
226         {
227                 .modalias       = "at25",
228                 .platform_data  = &at25640a,
229                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
230                 .bus_num        = 0,
231                 .chip_select    = 0,
232                 .mode           = SPI_MODE_0,
233         },
234 };
235
236 static __init void dm355_leopard_init(void)
237 {
238         struct clk *aemif;
239
240         gpio_request(9, "dm9000");
241         gpio_direction_input(9);
242         dm355leopard_dm9000_rsrc[2].start = gpio_to_irq(9);
243
244         aemif = clk_get(&dm355leopard_dm9000.dev, "aemif");
245         if (IS_ERR(aemif))
246                 WARN("%s: unable to get AEMIF clock\n", __func__);
247         else
248                 clk_enable(aemif);
249
250         platform_add_devices(davinci_leopard_devices,
251                              ARRAY_SIZE(davinci_leopard_devices));
252         leopard_init_i2c();
253         davinci_serial_init(&uart_config);
254
255         /* NOTE:  NAND flash timings set by the UBL are slower than
256          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
257          * but could be 0x0400008c for about 25% faster page reads.
258          */
259
260         gpio_request(2, "usb_id_toggle");
261         gpio_direction_output(2, USB_ID_VALUE);
262         /* irlml6401 switches over 1A in under 8 msec */
263         davinci_setup_usb(1000, 8);
264
265         davinci_setup_mmc(0, &dm355leopard_mmc_config);
266         davinci_setup_mmc(1, &dm355leopard_mmc_config);
267
268         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
269                         ARRAY_SIZE(dm355_leopard_spi_info));
270 }
271
272 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
273         .boot_params  = (0x80000100),
274         .map_io       = dm355_leopard_map_io,
275         .init_irq     = davinci_irq_init,
276         .timer        = &davinci_timer,
277         .init_machine = dm355_leopard_init,
278 MACHINE_END