~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/arm/mach-davinci/board-dm355-leopard.c

Version: ~ [ linux-5.12-rc1 ] ~ [ linux-5.11.2 ] ~ [ linux-5.10.19 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.101 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.177 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.222 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.258 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.258 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 #include <linux/platform_data/i2c-davinci.h>
 23 #include <linux/platform_data/mmc-davinci.h>
 24 #include <linux/platform_data/mtd-davinci.h>
 25 #include <linux/platform_data/usb-davinci.h>
 26 
 27 #include <asm/mach-types.h>
 28 #include <asm/mach/arch.h>
 29 
 30 #include <mach/common.h>
 31 #include <mach/serial.h>
 32 
 33 #include "davinci.h"
 34 
 35 /* NOTE:  this is geared for the standard config, with a socketed
 36  * 2 GByte Micron NAND (MT29F16G08FAA) using 128KB sectors.  If you
 37  * swap chips, maybe with a different block size, partitioning may
 38  * need to be changed.
 39  */
 40 #define NAND_BLOCK_SIZE         SZ_128K
 41 
 42 static struct mtd_partition davinci_nand_partitions[] = {
 43         {
 44                 /* UBL (a few copies) plus U-Boot */
 45                 .name           = "bootloader",
 46                 .offset         = 0,
 47                 .size           = 15 * NAND_BLOCK_SIZE,
 48                 .mask_flags     = MTD_WRITEABLE, /* force read-only */
 49         }, {
 50                 /* U-Boot environment */
 51                 .name           = "params",
 52                 .offset         = MTDPART_OFS_APPEND,
 53                 .size           = 1 * NAND_BLOCK_SIZE,
 54                 .mask_flags     = 0,
 55         }, {
 56                 .name           = "kernel",
 57                 .offset         = MTDPART_OFS_APPEND,
 58                 .size           = SZ_4M,
 59                 .mask_flags     = 0,
 60         }, {
 61                 .name           = "filesystem1",
 62                 .offset         = MTDPART_OFS_APPEND,
 63                 .size           = SZ_512M,
 64                 .mask_flags     = 0,
 65         }, {
 66                 .name           = "filesystem2",
 67                 .offset         = MTDPART_OFS_APPEND,
 68                 .size           = MTDPART_SIZ_FULL,
 69                 .mask_flags     = 0,
 70         }
 71         /* two blocks with bad block table (and mirror) at the end */
 72 };
 73 
 74 static struct davinci_nand_pdata davinci_nand_data = {
 75         .mask_chipsel           = BIT(14),
 76         .parts                  = davinci_nand_partitions,
 77         .nr_parts               = ARRAY_SIZE(davinci_nand_partitions),
 78         .ecc_mode               = NAND_ECC_HW_SYNDROME,
 79         .ecc_bits               = 4,
 80         .bbt_options            = NAND_BBT_USE_FLASH,
 81 };
 82 
 83 static struct resource davinci_nand_resources[] = {
 84         {
 85                 .start          = DM355_ASYNC_EMIF_DATA_CE0_BASE,
 86                 .end            = DM355_ASYNC_EMIF_DATA_CE0_BASE + SZ_32M - 1,
 87                 .flags          = IORESOURCE_MEM,
 88         }, {
 89                 .start          = DM355_ASYNC_EMIF_CONTROL_BASE,
 90                 .end            = DM355_ASYNC_EMIF_CONTROL_BASE + SZ_4K - 1,
 91                 .flags          = IORESOURCE_MEM,
 92         },
 93 };
 94 
 95 static struct platform_device davinci_nand_device = {
 96         .name                   = "davinci_nand",
 97         .id                     = 0,
 98 
 99         .num_resources          = ARRAY_SIZE(davinci_nand_resources),
100         .resource               = davinci_nand_resources,
101 
102         .dev                    = {
103                 .platform_data  = &davinci_nand_data,
104         },
105 };
106 
107 static struct davinci_i2c_platform_data i2c_pdata = {
108         .bus_freq       = 400   /* kHz */,
109         .bus_delay      = 0     /* usec */,
110 };
111 
112 static int leopard_mmc_gpio = -EINVAL;
113 
114 static void dm355leopard_mmcsd_gpios(unsigned gpio)
115 {
116         gpio_request(gpio + 0, "mmc0_ro");
117         gpio_request(gpio + 1, "mmc0_cd");
118         gpio_request(gpio + 2, "mmc1_ro");
119         gpio_request(gpio + 3, "mmc1_cd");
120 
121         /* we "know" these are input-only so we don't
122          * need to call gpio_direction_input()
123          */
124 
125         leopard_mmc_gpio = gpio;
126 }
127 
128 static struct i2c_board_info dm355leopard_i2c_info[] = {
129         { I2C_BOARD_INFO("dm355leopard_msp", 0x25),
130                 .platform_data = dm355leopard_mmcsd_gpios,
131                 /* plus irq */ },
132         /* { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }, */
133         /* { I2C_BOARD_INFO("tvp5146", 0x5d), }, */
134 };
135 
136 static void __init leopard_init_i2c(void)
137 {
138         davinci_init_i2c(&i2c_pdata);
139 
140         gpio_request(5, "dm355leopard_msp");
141         gpio_direction_input(5);
142         dm355leopard_i2c_info[0].irq = gpio_to_irq(5);
143 
144         i2c_register_board_info(1, dm355leopard_i2c_info,
145                         ARRAY_SIZE(dm355leopard_i2c_info));
146 }
147 
148 static struct resource dm355leopard_dm9000_rsrc[] = {
149         {
150                 /* addr */
151                 .start  = 0x04000000,
152                 .end    = 0x04000001,
153                 .flags  = IORESOURCE_MEM,
154         }, {
155                 /* data */
156                 .start  = 0x04000016,
157                 .end    = 0x04000017,
158                 .flags  = IORESOURCE_MEM,
159         }, {
160                 .flags  = IORESOURCE_IRQ
161                         | IORESOURCE_IRQ_HIGHEDGE /* rising (active high) */,
162         },
163 };
164 
165 static struct platform_device dm355leopard_dm9000 = {
166         .name           = "dm9000",
167         .id             = -1,
168         .resource       = dm355leopard_dm9000_rsrc,
169         .num_resources  = ARRAY_SIZE(dm355leopard_dm9000_rsrc),
170 };
171 
172 static struct platform_device *davinci_leopard_devices[] __initdata = {
173         &dm355leopard_dm9000,
174         &davinci_nand_device,
175 };
176 
177 static void __init dm355_leopard_map_io(void)
178 {
179         dm355_init();
180 }
181 
182 static int dm355leopard_mmc_get_cd(int module)
183 {
184         if (!gpio_is_valid(leopard_mmc_gpio))
185                 return -ENXIO;
186         /* low == card present */
187         return !gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 1);
188 }
189 
190 static int dm355leopard_mmc_get_ro(int module)
191 {
192         if (!gpio_is_valid(leopard_mmc_gpio))
193                 return -ENXIO;
194         /* high == card's write protect switch active */
195         return gpio_get_value_cansleep(leopard_mmc_gpio + 2 * module + 0);
196 }
197 
198 static struct davinci_mmc_config dm355leopard_mmc_config = {
199         .get_cd         = dm355leopard_mmc_get_cd,
200         .get_ro         = dm355leopard_mmc_get_ro,
201         .wires          = 4,
202         .max_freq       = 50000000,
203         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
204 };
205 
206 /* Don't connect anything to J10 unless you're only using USB host
207  * mode *and* have to do so with some kind of gender-bender.  If
208  * you have proper Mini-B or Mini-A cables (or Mini-A adapters)
209  * the ID pin won't need any help.
210  */
211 #define USB_ID_VALUE    1       /* ID pulled low */
212 
213 static struct spi_eeprom at25640a = {
214         .byte_len       = SZ_64K / 8,
215         .name           = "at25640a",
216         .page_size      = 32,
217         .flags          = EE_ADDR2,
218 };
219 
220 static struct spi_board_info dm355_leopard_spi_info[] __initconst = {
221         {
222                 .modalias       = "at25",
223                 .platform_data  = &at25640a,
224                 .max_speed_hz   = 10 * 1000 * 1000,     /* at 3v3 */
225                 .bus_num        = 0,
226                 .chip_select    = 0,
227                 .mode           = SPI_MODE_0,
228         },
229 };
230 
231 static __init void dm355_leopard_init(void)
232 {
233         struct clk *aemif;
234         int ret;
235 
236         ret = dm355_gpio_register();
237         if (ret)
238                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
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 (!WARN(IS_ERR(aemif), "unable to get AEMIF clock\n"))
246                 clk_prepare_enable(aemif);
247 
248         platform_add_devices(davinci_leopard_devices,
249                              ARRAY_SIZE(davinci_leopard_devices));
250         leopard_init_i2c();
251         davinci_serial_init(dm355_serial_device);
252 
253         /* NOTE:  NAND flash timings set by the UBL are slower than
254          * needed by MT29F16G08FAA chips ... EMIF.A1CR is 0x40400204
255          * but could be 0x0400008c for about 25% faster page reads.
256          */
257 
258         gpio_request(2, "usb_id_toggle");
259         gpio_direction_output(2, USB_ID_VALUE);
260         /* irlml6401 switches over 1A in under 8 msec */
261         davinci_setup_usb(1000, 8);
262 
263         davinci_setup_mmc(0, &dm355leopard_mmc_config);
264         davinci_setup_mmc(1, &dm355leopard_mmc_config);
265 
266         dm355_init_spi0(BIT(0), dm355_leopard_spi_info,
267                         ARRAY_SIZE(dm355_leopard_spi_info));
268 }
269 
270 MACHINE_START(DM355_LEOPARD, "DaVinci DM355 leopard")
271         .atag_offset  = 0x100,
272         .map_io       = dm355_leopard_map_io,
273         .init_irq     = davinci_irq_init,
274         .init_time      = davinci_timer_init,
275         .init_machine = dm355_leopard_init,
276         .init_late      = davinci_init_late,
277         .dma_zone_size  = SZ_128M,
278         .restart        = davinci_restart,
279 MACHINE_END
280 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp