2 * Support for CompuLab EM-x270 platform
4 * Copyright (C) 2007 CompuLab, Ltd.
5 * Author: Mike Rapoport <mike@compulab.co.il>
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.
12 #include <linux/irq.h>
13 #include <linux/platform_device.h>
15 #include <linux/dm9000.h>
16 #include <linux/rtc-v3020.h>
18 #include <linux/mtd/nand.h>
19 #include <linux/mtd/partitions.h>
21 #include <asm/mach-types.h>
23 #include <asm/mach/arch.h>
25 #include <asm/arch/pxa-regs.h>
26 #include <asm/arch/pxa2xx-gpio.h>
27 #include <asm/arch/pxa27x-udc.h>
28 #include <asm/arch/pxafb.h>
29 #include <asm/arch/ohci.h>
30 #include <asm/arch/mmc.h>
31 #include <asm/arch/bitfield.h>
36 #define EM_X270_MMC_PD (105)
37 #define EM_X270_ETHIRQ IRQ_GPIO(41)
38 #define EM_X270_MMC_IRQ IRQ_GPIO(13)
40 static struct resource em_x270_dm9k_resource[] = {
42 .start = PXA_CS2_PHYS,
43 .end = PXA_CS2_PHYS + 3,
44 .flags = IORESOURCE_MEM,
47 .start = PXA_CS2_PHYS + 8,
48 .end = PXA_CS2_PHYS + 8 + 0x3f,
49 .flags = IORESOURCE_MEM,
52 .start = EM_X270_ETHIRQ,
53 .end = EM_X270_ETHIRQ,
54 .flags = IORESOURCE_IRQ,
58 /* for the moment we limit ourselves to 32bit IO until some
59 * better IO routines can be written and tested
61 static struct dm9000_plat_data em_x270_dm9k_platdata = {
62 .flags = DM9000_PLATF_32BITONLY,
66 static struct platform_device em_x270_dm9k = {
69 .num_resources = ARRAY_SIZE(em_x270_dm9k_resource),
70 .resource = em_x270_dm9k_resource,
72 .platform_data = &em_x270_dm9k_platdata,
77 static struct platform_device em_x270_audio = {
78 .name = "pxa2xx-ac97",
82 /* WM9712 touchscreen controller. Hopefully the driver will make it to
83 * the mainstream sometime */
84 static struct platform_device em_x270_ts = {
90 static struct resource em_x270_v3020_resource[] = {
92 .start = PXA_CS4_PHYS,
93 .end = PXA_CS4_PHYS + 3,
94 .flags = IORESOURCE_MEM,
98 static struct v3020_platform_data em_x270_v3020_platdata = {
102 static struct platform_device em_x270_rtc = {
104 .num_resources = ARRAY_SIZE(em_x270_v3020_resource),
105 .resource = em_x270_v3020_resource,
108 .platform_data = &em_x270_v3020_platdata,
113 #define GPIO_NAND_CS (11)
114 #define GPIO_NAND_RB (56)
116 static inline void nand_cs_on(void)
118 GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
121 static void nand_cs_off(void)
125 GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
128 /* hardware specific access to control-lines */
129 static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
132 struct nand_chip *this = mtd->priv;
133 unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
137 if (ctrl & NAND_CTRL_CHANGE) {
139 nandaddr |= (1 << 3);
141 nandaddr &= ~(1 << 3);
143 nandaddr |= (1 << 2);
145 nandaddr &= ~(1 << 2);
153 this->IO_ADDR_W = (void __iomem *)nandaddr;
154 if (dat != NAND_CMD_NONE)
155 writel(dat, this->IO_ADDR_W);
160 /* read device ready pin */
161 static int em_x270_nand_device_ready(struct mtd_info *mtd)
165 return GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB);
168 static struct mtd_partition em_x270_partition_info[] = {
176 .offset = MTDPART_OFS_APPEND,
177 .size = MTDPART_SIZ_FULL
181 static const char *em_x270_part_probes[] = { "cmdlinepart", NULL };
183 struct platform_nand_data em_x270_nand_platdata = {
187 .nr_partitions = ARRAY_SIZE(em_x270_partition_info),
188 .partitions = em_x270_partition_info,
190 .part_probe_types = em_x270_part_probes,
194 .dev_ready = em_x270_nand_device_ready,
196 .cmd_ctrl = em_x270_nand_cmd_ctl,
200 static struct resource em_x270_nand_resource[] = {
202 .start = PXA_CS1_PHYS,
203 .end = PXA_CS1_PHYS + 12,
204 .flags = IORESOURCE_MEM,
208 static struct platform_device em_x270_nand = {
210 .num_resources = ARRAY_SIZE(em_x270_nand_resource),
211 .resource = em_x270_nand_resource,
214 .platform_data = &em_x270_nand_platdata,
218 /* platform devices */
219 static struct platform_device *platform_devices[] __initdata = {
228 /* PXA27x OHCI controller setup */
229 static int em_x270_ohci_init(struct device *dev)
231 /* Set the Power Control Polarity Low */
232 UHCHR = (UHCHR | UHCHR_PCPL) &
233 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);
235 /* enable port 2 transiever */
236 UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;
241 static struct pxaohci_platform_data em_x270_ohci_platform_data = {
242 .port_mode = PMM_PERPORT_MODE,
243 .init = em_x270_ohci_init,
247 static int em_x270_mci_init(struct device *dev,
248 irq_handler_t em_x270_detect_int,
253 /* setup GPIO for PXA27x MMC controller */
254 pxa_gpio_mode(GPIO32_MMCCLK_MD);
255 pxa_gpio_mode(GPIO112_MMCCMD_MD);
256 pxa_gpio_mode(GPIO92_MMCDAT0_MD);
257 pxa_gpio_mode(GPIO109_MMCDAT1_MD);
258 pxa_gpio_mode(GPIO110_MMCDAT2_MD);
259 pxa_gpio_mode(GPIO111_MMCDAT3_MD);
261 /* EM-X270 uses GPIO13 as SD power enable */
262 pxa_gpio_mode(EM_X270_MMC_PD | GPIO_OUT);
264 err = request_irq(EM_X270_MMC_IRQ, em_x270_detect_int,
265 IRQF_DISABLED | IRQF_TRIGGER_FALLING,
266 "MMC card detect", data);
268 printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
276 static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
279 FIXME: current hardware implementation does not allow to
280 enable/disable MMC power. This will be fixed in next HW releases,
281 and we'll need to add implmentation here.
286 static void em_x270_mci_exit(struct device *dev, void *data)
288 free_irq(EM_X270_MMC_IRQ, data);
291 static struct pxamci_platform_data em_x270_mci_platform_data = {
292 .ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
293 .init = em_x270_mci_init,
294 .setpower = em_x270_mci_setpower,
295 .exit = em_x270_mci_exit,
299 static struct pxafb_mode_info em_x270_lcd_mode = {
313 static struct pxafb_mach_info em_x270_lcd = {
314 .modes = &em_x270_lcd_mode,
319 .lccr3 = LCCR3_PixClkDiv(0x01) | LCCR3_Acb(0xff),
322 static void __init em_x270_init(void)
325 set_pxa_fb_info(&em_x270_lcd);
327 /* register EM-X270 platform devices */
328 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
330 /* set MCI and OHCI platform parameters */
331 pxa_set_mci_info(&em_x270_mci_platform_data);
332 pxa_set_ohci_info(&em_x270_ohci_platform_data);
334 /* setup STUART GPIOs */
335 pxa_gpio_mode(GPIO46_STRXD_MD);
336 pxa_gpio_mode(GPIO47_STTXD_MD);
338 /* setup BTUART GPIOs */
339 pxa_gpio_mode(GPIO42_BTRXD_MD);
340 pxa_gpio_mode(GPIO43_BTTXD_MD);
341 pxa_gpio_mode(GPIO44_BTCTS_MD);
342 pxa_gpio_mode(GPIO45_BTRTS_MD);
344 /* Setup interrupt for dm9000 */
345 set_irq_type(EM_X270_ETHIRQ, IRQT_RISING);
348 MACHINE_START(EM_X270, "Compulab EM-x270")
349 .boot_params = 0xa0000100,
350 .phys_io = 0x40000000,
351 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
352 .map_io = pxa_map_io,
353 .init_irq = pxa27x_init_irq,
355 .init_machine = em_x270_init,