Mike Rapoport | 3d50527 | 2007-07-18 11:31:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Support for CompuLab EM-x270 platform |
| 3 | * |
| 4 | * Copyright (C) 2007 CompuLab, Ltd. |
| 5 | * Author: Mike Rapoport <mike@compulab.co.il> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/irq.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | |
| 15 | #include <linux/dm9000.h> |
| 16 | #include <linux/rtc-v3020.h> |
| 17 | |
| 18 | #include <linux/mtd/nand.h> |
| 19 | #include <linux/mtd/partitions.h> |
| 20 | |
| 21 | #include <asm/mach-types.h> |
| 22 | |
| 23 | #include <asm/mach/arch.h> |
| 24 | |
| 25 | #include <asm/arch/pxa-regs.h> |
| 26 | #include <asm/arch/pxafb.h> |
| 27 | #include <asm/arch/ohci.h> |
| 28 | #include <asm/arch/mmc.h> |
| 29 | #include <asm/arch/bitfield.h> |
| 30 | |
| 31 | #include "generic.h" |
| 32 | |
| 33 | /* GPIO IRQ usage */ |
| 34 | #define EM_X270_MMC_PD (105) |
| 35 | #define EM_X270_ETHIRQ IRQ_GPIO(41) |
| 36 | #define EM_X270_MMC_IRQ IRQ_GPIO(13) |
| 37 | |
| 38 | static struct resource em_x270_dm9k_resource[] = { |
| 39 | [0] = { |
| 40 | .start = PXA_CS2_PHYS, |
| 41 | .end = PXA_CS2_PHYS + 3, |
| 42 | .flags = IORESOURCE_MEM, |
| 43 | }, |
| 44 | [1] = { |
| 45 | .start = PXA_CS2_PHYS + 8, |
| 46 | .end = PXA_CS2_PHYS + 8 + 0x3f, |
| 47 | .flags = IORESOURCE_MEM, |
| 48 | }, |
| 49 | [2] = { |
| 50 | .start = EM_X270_ETHIRQ, |
| 51 | .end = EM_X270_ETHIRQ, |
| 52 | .flags = IORESOURCE_IRQ, |
| 53 | } |
| 54 | }; |
| 55 | |
| 56 | /* for the moment we limit ourselves to 32bit IO until some |
| 57 | * better IO routines can be written and tested |
| 58 | */ |
| 59 | static struct dm9000_plat_data em_x270_dm9k_platdata = { |
| 60 | .flags = DM9000_PLATF_32BITONLY, |
| 61 | }; |
| 62 | |
| 63 | /* Ethernet device */ |
| 64 | static struct platform_device em_x270_dm9k = { |
| 65 | .name = "dm9000", |
| 66 | .id = 0, |
| 67 | .num_resources = ARRAY_SIZE(em_x270_dm9k_resource), |
| 68 | .resource = em_x270_dm9k_resource, |
| 69 | .dev = { |
| 70 | .platform_data = &em_x270_dm9k_platdata, |
| 71 | } |
| 72 | }; |
| 73 | |
| 74 | /* audio device */ |
| 75 | static struct platform_device em_x270_audio = { |
| 76 | .name = "pxa2xx-ac97", |
| 77 | .id = -1, |
| 78 | }; |
| 79 | |
| 80 | /* WM9712 touchscreen controller. Hopefully the driver will make it to |
| 81 | * the mainstream sometime */ |
| 82 | static struct platform_device em_x270_ts = { |
| 83 | .name = "wm97xx-ts", |
| 84 | .id = -1, |
| 85 | }; |
| 86 | |
| 87 | /* RTC */ |
| 88 | static struct resource em_x270_v3020_resource[] = { |
| 89 | [0] = { |
| 90 | .start = PXA_CS4_PHYS, |
| 91 | .end = PXA_CS4_PHYS + 3, |
| 92 | .flags = IORESOURCE_MEM, |
| 93 | }, |
| 94 | }; |
| 95 | |
| 96 | static struct v3020_platform_data em_x270_v3020_platdata = { |
| 97 | .leftshift = 0, |
| 98 | }; |
| 99 | |
| 100 | static struct platform_device em_x270_rtc = { |
| 101 | .name = "v3020", |
| 102 | .num_resources = ARRAY_SIZE(em_x270_v3020_resource), |
| 103 | .resource = em_x270_v3020_resource, |
| 104 | .id = -1, |
| 105 | .dev = { |
| 106 | .platform_data = &em_x270_v3020_platdata, |
| 107 | } |
| 108 | }; |
| 109 | |
| 110 | /* NAND flash */ |
| 111 | #define GPIO_NAND_CS (11) |
| 112 | #define GPIO_NAND_RB (56) |
| 113 | |
| 114 | static inline void nand_cs_on(void) |
| 115 | { |
| 116 | GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS); |
| 117 | } |
| 118 | |
| 119 | static void nand_cs_off(void) |
| 120 | { |
| 121 | dsb(); |
| 122 | |
| 123 | GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS); |
| 124 | } |
| 125 | |
| 126 | /* hardware specific access to control-lines */ |
| 127 | static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat, |
| 128 | unsigned int ctrl) |
| 129 | { |
| 130 | struct nand_chip *this = mtd->priv; |
| 131 | unsigned long nandaddr = (unsigned long)this->IO_ADDR_W; |
| 132 | |
| 133 | dsb(); |
| 134 | |
| 135 | if (ctrl & NAND_CTRL_CHANGE) { |
| 136 | if (ctrl & NAND_ALE) |
| 137 | nandaddr |= (1 << 3); |
| 138 | else |
| 139 | nandaddr &= ~(1 << 3); |
| 140 | if (ctrl & NAND_CLE) |
| 141 | nandaddr |= (1 << 2); |
| 142 | else |
| 143 | nandaddr &= ~(1 << 2); |
| 144 | if (ctrl & NAND_NCE) |
| 145 | nand_cs_on(); |
| 146 | else |
| 147 | nand_cs_off(); |
| 148 | } |
| 149 | |
| 150 | dsb(); |
| 151 | this->IO_ADDR_W = (void __iomem *)nandaddr; |
| 152 | if (dat != NAND_CMD_NONE) |
| 153 | writel(dat, this->IO_ADDR_W); |
| 154 | |
| 155 | dsb(); |
| 156 | } |
| 157 | |
| 158 | /* read device ready pin */ |
| 159 | static int em_x270_nand_device_ready(struct mtd_info *mtd) |
| 160 | { |
| 161 | dsb(); |
| 162 | |
| 163 | return GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB); |
| 164 | } |
| 165 | |
| 166 | static struct mtd_partition em_x270_partition_info[] = { |
| 167 | [0] = { |
| 168 | .name = "em_x270-0", |
| 169 | .offset = 0, |
| 170 | .size = SZ_4M, |
| 171 | }, |
| 172 | [1] = { |
| 173 | .name = "em_x270-1", |
| 174 | .offset = MTDPART_OFS_APPEND, |
| 175 | .size = MTDPART_SIZ_FULL |
| 176 | }, |
| 177 | }; |
| 178 | |
| 179 | static const char *em_x270_part_probes[] = { "cmdlinepart", NULL }; |
| 180 | |
| 181 | struct platform_nand_data em_x270_nand_platdata = { |
| 182 | .chip = { |
| 183 | .nr_chips = 1, |
| 184 | .chip_offset = 0, |
| 185 | .nr_partitions = ARRAY_SIZE(em_x270_partition_info), |
| 186 | .partitions = em_x270_partition_info, |
| 187 | .chip_delay = 20, |
| 188 | .part_probe_types = em_x270_part_probes, |
| 189 | }, |
| 190 | .ctrl = { |
| 191 | .hwcontrol = 0, |
| 192 | .dev_ready = em_x270_nand_device_ready, |
| 193 | .select_chip = 0, |
| 194 | .cmd_ctrl = em_x270_nand_cmd_ctl, |
| 195 | }, |
| 196 | }; |
| 197 | |
| 198 | static struct resource em_x270_nand_resource[] = { |
| 199 | [0] = { |
| 200 | .start = PXA_CS1_PHYS, |
| 201 | .end = PXA_CS1_PHYS + 12, |
| 202 | .flags = IORESOURCE_MEM, |
| 203 | }, |
| 204 | }; |
| 205 | |
| 206 | static struct platform_device em_x270_nand = { |
| 207 | .name = "gen_nand", |
| 208 | .num_resources = ARRAY_SIZE(em_x270_nand_resource), |
| 209 | .resource = em_x270_nand_resource, |
| 210 | .id = -1, |
| 211 | .dev = { |
| 212 | .platform_data = &em_x270_nand_platdata, |
| 213 | } |
| 214 | }; |
| 215 | |
| 216 | /* platform devices */ |
| 217 | static struct platform_device *platform_devices[] __initdata = { |
| 218 | &em_x270_dm9k, |
| 219 | &em_x270_audio, |
| 220 | &em_x270_ts, |
| 221 | &em_x270_rtc, |
| 222 | &em_x270_nand, |
| 223 | }; |
| 224 | |
| 225 | |
| 226 | /* PXA27x OHCI controller setup */ |
| 227 | static int em_x270_ohci_init(struct device *dev) |
| 228 | { |
| 229 | /* Set the Power Control Polarity Low */ |
| 230 | UHCHR = (UHCHR | UHCHR_PCPL) & |
| 231 | ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE); |
| 232 | |
| 233 | /* enable port 2 transiever */ |
| 234 | UP2OCR = UP2OCR_HXS | UP2OCR_HXOE; |
| 235 | |
| 236 | return 0; |
| 237 | } |
| 238 | |
| 239 | static struct pxaohci_platform_data em_x270_ohci_platform_data = { |
| 240 | .port_mode = PMM_PERPORT_MODE, |
| 241 | .init = em_x270_ohci_init, |
| 242 | }; |
| 243 | |
| 244 | |
| 245 | static int em_x270_mci_init(struct device *dev, |
| 246 | irq_handler_t em_x270_detect_int, |
| 247 | void *data) |
| 248 | { |
| 249 | int err; |
| 250 | |
| 251 | /* setup GPIO for PXA27x MMC controller */ |
| 252 | pxa_gpio_mode(GPIO32_MMCCLK_MD); |
| 253 | pxa_gpio_mode(GPIO112_MMCCMD_MD); |
| 254 | pxa_gpio_mode(GPIO92_MMCDAT0_MD); |
| 255 | pxa_gpio_mode(GPIO109_MMCDAT1_MD); |
| 256 | pxa_gpio_mode(GPIO110_MMCDAT2_MD); |
| 257 | pxa_gpio_mode(GPIO111_MMCDAT3_MD); |
| 258 | |
| 259 | /* EM-X270 uses GPIO13 as SD power enable */ |
| 260 | pxa_gpio_mode(EM_X270_MMC_PD | GPIO_OUT); |
| 261 | |
| 262 | err = request_irq(EM_X270_MMC_IRQ, em_x270_detect_int, |
| 263 | IRQF_DISABLED | IRQF_TRIGGER_FALLING, |
| 264 | "MMC card detect", data); |
| 265 | if (err) { |
| 266 | printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n", |
| 267 | __FUNCTION__, err); |
| 268 | return err; |
| 269 | } |
| 270 | |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | static void em_x270_mci_setpower(struct device *dev, unsigned int vdd) |
| 275 | { |
| 276 | /* |
| 277 | FIXME: current hardware implementation does not allow to |
| 278 | enable/disable MMC power. This will be fixed in next HW releases, |
| 279 | and we'll need to add implmentation here. |
| 280 | */ |
| 281 | return; |
| 282 | } |
| 283 | |
| 284 | static void em_x270_mci_exit(struct device *dev, void *data) |
| 285 | { |
| 286 | free_irq(EM_X270_MMC_IRQ, data); |
| 287 | } |
| 288 | |
| 289 | static struct pxamci_platform_data em_x270_mci_platform_data = { |
| 290 | .ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31, |
| 291 | .init = em_x270_mci_init, |
| 292 | .setpower = em_x270_mci_setpower, |
| 293 | .exit = em_x270_mci_exit, |
| 294 | }; |
| 295 | |
| 296 | /* LCD 480x640 */ |
| 297 | static struct pxafb_mode_info em_x270_lcd_mode = { |
| 298 | .pixclock = 50000, |
| 299 | .bpp = 16, |
| 300 | .xres = 480, |
| 301 | .yres = 640, |
| 302 | .hsync_len = 8, |
| 303 | .vsync_len = 2, |
| 304 | .left_margin = 8, |
| 305 | .upper_margin = 0, |
| 306 | .right_margin = 24, |
| 307 | .lower_margin = 4, |
| 308 | .cmap_greyscale = 0, |
| 309 | }; |
| 310 | |
| 311 | static struct pxafb_mach_info em_x270_lcd = { |
| 312 | .modes = &em_x270_lcd_mode, |
| 313 | .num_modes = 1, |
| 314 | .cmap_inverse = 0, |
| 315 | .cmap_static = 0, |
| 316 | .lccr0 = LCCR0_PAS, |
| 317 | .lccr3 = LCCR3_PixClkDiv(0x01) | LCCR3_Acb(0xff), |
| 318 | }; |
| 319 | |
| 320 | static void __init em_x270_init(void) |
| 321 | { |
| 322 | /* setup LCD */ |
| 323 | set_pxa_fb_info(&em_x270_lcd); |
| 324 | |
| 325 | /* register EM-X270 platform devices */ |
| 326 | platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); |
| 327 | |
| 328 | /* set MCI and OHCI platform parameters */ |
| 329 | pxa_set_mci_info(&em_x270_mci_platform_data); |
| 330 | pxa_set_ohci_info(&em_x270_ohci_platform_data); |
| 331 | |
| 332 | /* setup STUART GPIOs */ |
| 333 | pxa_gpio_mode(GPIO46_STRXD_MD); |
| 334 | pxa_gpio_mode(GPIO47_STTXD_MD); |
| 335 | |
| 336 | /* setup BTUART GPIOs */ |
| 337 | pxa_gpio_mode(GPIO42_BTRXD_MD); |
| 338 | pxa_gpio_mode(GPIO43_BTTXD_MD); |
| 339 | pxa_gpio_mode(GPIO44_BTCTS_MD); |
| 340 | pxa_gpio_mode(GPIO45_BTRTS_MD); |
| 341 | |
| 342 | /* Setup interrupt for dm9000 */ |
| 343 | set_irq_type(EM_X270_ETHIRQ, IRQT_RISING); |
| 344 | } |
| 345 | |
| 346 | MACHINE_START(EM_X270, "Compulab EM-x270") |
| 347 | .boot_params = 0xa0000100, |
| 348 | .phys_io = 0x40000000, |
| 349 | .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, |
| 350 | .map_io = pxa_map_io, |
| 351 | .init_irq = pxa27x_init_irq, |
| 352 | .timer = &pxa_timer, |
| 353 | .init_machine = em_x270_init, |
| 354 | MACHINE_END |