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/audio.h>
29 #include <asm/arch/pxafb.h>
30 #include <asm/arch/ohci.h>
31 #include <asm/arch/mmc.h>
32 #include <asm/arch/bitfield.h>
37 #define EM_X270_MMC_PD (105)
38 #define EM_X270_ETHIRQ IRQ_GPIO(41)
39 #define EM_X270_MMC_IRQ IRQ_GPIO(13)
41 static struct resource em_x270_dm9k_resource
[] = {
43 .start
= PXA_CS2_PHYS
,
44 .end
= PXA_CS2_PHYS
+ 3,
45 .flags
= IORESOURCE_MEM
,
48 .start
= PXA_CS2_PHYS
+ 8,
49 .end
= PXA_CS2_PHYS
+ 8 + 0x3f,
50 .flags
= IORESOURCE_MEM
,
53 .start
= EM_X270_ETHIRQ
,
54 .end
= EM_X270_ETHIRQ
,
55 .flags
= IORESOURCE_IRQ
,
59 /* for the moment we limit ourselves to 32bit IO until some
60 * better IO routines can be written and tested
62 static struct dm9000_plat_data em_x270_dm9k_platdata
= {
63 .flags
= DM9000_PLATF_32BITONLY
,
67 static struct platform_device em_x270_dm9k
= {
70 .num_resources
= ARRAY_SIZE(em_x270_dm9k_resource
),
71 .resource
= em_x270_dm9k_resource
,
73 .platform_data
= &em_x270_dm9k_platdata
,
77 /* WM9712 touchscreen controller. Hopefully the driver will make it to
78 * the mainstream sometime */
79 static struct platform_device em_x270_ts
= {
85 static struct resource em_x270_v3020_resource
[] = {
87 .start
= PXA_CS4_PHYS
,
88 .end
= PXA_CS4_PHYS
+ 3,
89 .flags
= IORESOURCE_MEM
,
93 static struct v3020_platform_data em_x270_v3020_platdata
= {
97 static struct platform_device em_x270_rtc
= {
99 .num_resources
= ARRAY_SIZE(em_x270_v3020_resource
),
100 .resource
= em_x270_v3020_resource
,
103 .platform_data
= &em_x270_v3020_platdata
,
108 #define GPIO_NAND_CS (11)
109 #define GPIO_NAND_RB (56)
111 static inline void nand_cs_on(void)
113 GPCR(GPIO_NAND_CS
) = GPIO_bit(GPIO_NAND_CS
);
116 static void nand_cs_off(void)
120 GPSR(GPIO_NAND_CS
) = GPIO_bit(GPIO_NAND_CS
);
123 /* hardware specific access to control-lines */
124 static void em_x270_nand_cmd_ctl(struct mtd_info
*mtd
, int dat
,
127 struct nand_chip
*this = mtd
->priv
;
128 unsigned long nandaddr
= (unsigned long)this->IO_ADDR_W
;
132 if (ctrl
& NAND_CTRL_CHANGE
) {
134 nandaddr
|= (1 << 3);
136 nandaddr
&= ~(1 << 3);
138 nandaddr
|= (1 << 2);
140 nandaddr
&= ~(1 << 2);
148 this->IO_ADDR_W
= (void __iomem
*)nandaddr
;
149 if (dat
!= NAND_CMD_NONE
)
150 writel(dat
, this->IO_ADDR_W
);
155 /* read device ready pin */
156 static int em_x270_nand_device_ready(struct mtd_info
*mtd
)
160 return GPLR(GPIO_NAND_RB
) & GPIO_bit(GPIO_NAND_RB
);
163 static struct mtd_partition em_x270_partition_info
[] = {
171 .offset
= MTDPART_OFS_APPEND
,
172 .size
= MTDPART_SIZ_FULL
176 static const char *em_x270_part_probes
[] = { "cmdlinepart", NULL
};
178 struct platform_nand_data em_x270_nand_platdata
= {
182 .nr_partitions
= ARRAY_SIZE(em_x270_partition_info
),
183 .partitions
= em_x270_partition_info
,
185 .part_probe_types
= em_x270_part_probes
,
189 .dev_ready
= em_x270_nand_device_ready
,
191 .cmd_ctrl
= em_x270_nand_cmd_ctl
,
195 static struct resource em_x270_nand_resource
[] = {
197 .start
= PXA_CS1_PHYS
,
198 .end
= PXA_CS1_PHYS
+ 12,
199 .flags
= IORESOURCE_MEM
,
203 static struct platform_device em_x270_nand
= {
205 .num_resources
= ARRAY_SIZE(em_x270_nand_resource
),
206 .resource
= em_x270_nand_resource
,
209 .platform_data
= &em_x270_nand_platdata
,
213 /* platform devices */
214 static struct platform_device
*platform_devices
[] __initdata
= {
222 /* PXA27x OHCI controller setup */
223 static int em_x270_ohci_init(struct device
*dev
)
225 /* Set the Power Control Polarity Low */
226 UHCHR
= (UHCHR
| UHCHR_PCPL
) &
227 ~(UHCHR_SSEP1
| UHCHR_SSEP2
| UHCHR_SSE
);
229 /* enable port 2 transiever */
230 UP2OCR
= UP2OCR_HXS
| UP2OCR_HXOE
;
235 static struct pxaohci_platform_data em_x270_ohci_platform_data
= {
236 .port_mode
= PMM_PERPORT_MODE
,
237 .init
= em_x270_ohci_init
,
241 static int em_x270_mci_init(struct device
*dev
,
242 irq_handler_t em_x270_detect_int
,
247 /* setup GPIO for PXA27x MMC controller */
248 pxa_gpio_mode(GPIO32_MMCCLK_MD
);
249 pxa_gpio_mode(GPIO112_MMCCMD_MD
);
250 pxa_gpio_mode(GPIO92_MMCDAT0_MD
);
251 pxa_gpio_mode(GPIO109_MMCDAT1_MD
);
252 pxa_gpio_mode(GPIO110_MMCDAT2_MD
);
253 pxa_gpio_mode(GPIO111_MMCDAT3_MD
);
255 /* EM-X270 uses GPIO13 as SD power enable */
256 pxa_gpio_mode(EM_X270_MMC_PD
| GPIO_OUT
);
258 err
= request_irq(EM_X270_MMC_IRQ
, em_x270_detect_int
,
259 IRQF_DISABLED
| IRQF_TRIGGER_FALLING
,
260 "MMC card detect", data
);
262 printk(KERN_ERR
"%s: can't request MMC card detect IRQ: %d\n",
270 static void em_x270_mci_setpower(struct device
*dev
, unsigned int vdd
)
273 FIXME: current hardware implementation does not allow to
274 enable/disable MMC power. This will be fixed in next HW releases,
275 and we'll need to add implmentation here.
280 static void em_x270_mci_exit(struct device
*dev
, void *data
)
282 free_irq(EM_X270_MMC_IRQ
, data
);
285 static struct pxamci_platform_data em_x270_mci_platform_data
= {
286 .ocr_mask
= MMC_VDD_28_29
|MMC_VDD_29_30
|MMC_VDD_30_31
,
287 .init
= em_x270_mci_init
,
288 .setpower
= em_x270_mci_setpower
,
289 .exit
= em_x270_mci_exit
,
293 static struct pxafb_mode_info em_x270_lcd_mode
= {
307 static struct pxafb_mach_info em_x270_lcd
= {
308 .modes
= &em_x270_lcd_mode
,
313 .lccr3
= LCCR3_PixClkDiv(0x01) | LCCR3_Acb(0xff),
316 static void __init
em_x270_init(void)
319 set_pxa_fb_info(&em_x270_lcd
);
321 /* register EM-X270 platform devices */
322 platform_add_devices(platform_devices
, ARRAY_SIZE(platform_devices
));
323 pxa_set_ac97_info(NULL
);
325 /* set MCI and OHCI platform parameters */
326 pxa_set_mci_info(&em_x270_mci_platform_data
);
327 pxa_set_ohci_info(&em_x270_ohci_platform_data
);
329 /* setup STUART GPIOs */
330 pxa_gpio_mode(GPIO46_STRXD_MD
);
331 pxa_gpio_mode(GPIO47_STTXD_MD
);
333 /* setup BTUART GPIOs */
334 pxa_gpio_mode(GPIO42_BTRXD_MD
);
335 pxa_gpio_mode(GPIO43_BTTXD_MD
);
336 pxa_gpio_mode(GPIO44_BTCTS_MD
);
337 pxa_gpio_mode(GPIO45_BTRTS_MD
);
339 /* Setup interrupt for dm9000 */
340 set_irq_type(EM_X270_ETHIRQ
, IRQT_RISING
);
343 MACHINE_START(EM_X270
, "Compulab EM-x270")
344 .boot_params
= 0xa0000100,
345 .phys_io
= 0x40000000,
346 .io_pg_offst
= (io_p2v(0x40000000) >> 18) & 0xfffc,
347 .map_io
= pxa_map_io
,
348 .init_irq
= pxa27x_init_irq
,
350 .init_machine
= em_x270_init
,