mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 22:53:55 +08:00
a683b14df8
two reasons: 1. GPIO namings and their mode definitions are conceptually not part of the PXA register definitions 2. this is actually a temporary move in the transition of PXA2xx to use MFP-alike APIs (as what PXA3xx is now doing), so that legacy code will still work and new code can be added in step by step Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
356 lines
7.7 KiB
C
356 lines
7.7 KiB
C
/*
|
|
* Support for CompuLab EM-x270 platform
|
|
*
|
|
* Copyright (C) 2007 CompuLab, Ltd.
|
|
* Author: Mike Rapoport <mike@compulab.co.il>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/irq.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/dm9000.h>
|
|
#include <linux/rtc-v3020.h>
|
|
|
|
#include <linux/mtd/nand.h>
|
|
#include <linux/mtd/partitions.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include <asm/arch/pxa-regs.h>
|
|
#include <asm/arch/pxa2xx-gpio.h>
|
|
#include <asm/arch/pxafb.h>
|
|
#include <asm/arch/ohci.h>
|
|
#include <asm/arch/mmc.h>
|
|
#include <asm/arch/bitfield.h>
|
|
|
|
#include "generic.h"
|
|
|
|
/* GPIO IRQ usage */
|
|
#define EM_X270_MMC_PD (105)
|
|
#define EM_X270_ETHIRQ IRQ_GPIO(41)
|
|
#define EM_X270_MMC_IRQ IRQ_GPIO(13)
|
|
|
|
static struct resource em_x270_dm9k_resource[] = {
|
|
[0] = {
|
|
.start = PXA_CS2_PHYS,
|
|
.end = PXA_CS2_PHYS + 3,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = PXA_CS2_PHYS + 8,
|
|
.end = PXA_CS2_PHYS + 8 + 0x3f,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[2] = {
|
|
.start = EM_X270_ETHIRQ,
|
|
.end = EM_X270_ETHIRQ,
|
|
.flags = IORESOURCE_IRQ,
|
|
}
|
|
};
|
|
|
|
/* for the moment we limit ourselves to 32bit IO until some
|
|
* better IO routines can be written and tested
|
|
*/
|
|
static struct dm9000_plat_data em_x270_dm9k_platdata = {
|
|
.flags = DM9000_PLATF_32BITONLY,
|
|
};
|
|
|
|
/* Ethernet device */
|
|
static struct platform_device em_x270_dm9k = {
|
|
.name = "dm9000",
|
|
.id = 0,
|
|
.num_resources = ARRAY_SIZE(em_x270_dm9k_resource),
|
|
.resource = em_x270_dm9k_resource,
|
|
.dev = {
|
|
.platform_data = &em_x270_dm9k_platdata,
|
|
}
|
|
};
|
|
|
|
/* audio device */
|
|
static struct platform_device em_x270_audio = {
|
|
.name = "pxa2xx-ac97",
|
|
.id = -1,
|
|
};
|
|
|
|
/* WM9712 touchscreen controller. Hopefully the driver will make it to
|
|
* the mainstream sometime */
|
|
static struct platform_device em_x270_ts = {
|
|
.name = "wm97xx-ts",
|
|
.id = -1,
|
|
};
|
|
|
|
/* RTC */
|
|
static struct resource em_x270_v3020_resource[] = {
|
|
[0] = {
|
|
.start = PXA_CS4_PHYS,
|
|
.end = PXA_CS4_PHYS + 3,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct v3020_platform_data em_x270_v3020_platdata = {
|
|
.leftshift = 0,
|
|
};
|
|
|
|
static struct platform_device em_x270_rtc = {
|
|
.name = "v3020",
|
|
.num_resources = ARRAY_SIZE(em_x270_v3020_resource),
|
|
.resource = em_x270_v3020_resource,
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &em_x270_v3020_platdata,
|
|
}
|
|
};
|
|
|
|
/* NAND flash */
|
|
#define GPIO_NAND_CS (11)
|
|
#define GPIO_NAND_RB (56)
|
|
|
|
static inline void nand_cs_on(void)
|
|
{
|
|
GPCR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
|
|
}
|
|
|
|
static void nand_cs_off(void)
|
|
{
|
|
dsb();
|
|
|
|
GPSR(GPIO_NAND_CS) = GPIO_bit(GPIO_NAND_CS);
|
|
}
|
|
|
|
/* hardware specific access to control-lines */
|
|
static void em_x270_nand_cmd_ctl(struct mtd_info *mtd, int dat,
|
|
unsigned int ctrl)
|
|
{
|
|
struct nand_chip *this = mtd->priv;
|
|
unsigned long nandaddr = (unsigned long)this->IO_ADDR_W;
|
|
|
|
dsb();
|
|
|
|
if (ctrl & NAND_CTRL_CHANGE) {
|
|
if (ctrl & NAND_ALE)
|
|
nandaddr |= (1 << 3);
|
|
else
|
|
nandaddr &= ~(1 << 3);
|
|
if (ctrl & NAND_CLE)
|
|
nandaddr |= (1 << 2);
|
|
else
|
|
nandaddr &= ~(1 << 2);
|
|
if (ctrl & NAND_NCE)
|
|
nand_cs_on();
|
|
else
|
|
nand_cs_off();
|
|
}
|
|
|
|
dsb();
|
|
this->IO_ADDR_W = (void __iomem *)nandaddr;
|
|
if (dat != NAND_CMD_NONE)
|
|
writel(dat, this->IO_ADDR_W);
|
|
|
|
dsb();
|
|
}
|
|
|
|
/* read device ready pin */
|
|
static int em_x270_nand_device_ready(struct mtd_info *mtd)
|
|
{
|
|
dsb();
|
|
|
|
return GPLR(GPIO_NAND_RB) & GPIO_bit(GPIO_NAND_RB);
|
|
}
|
|
|
|
static struct mtd_partition em_x270_partition_info[] = {
|
|
[0] = {
|
|
.name = "em_x270-0",
|
|
.offset = 0,
|
|
.size = SZ_4M,
|
|
},
|
|
[1] = {
|
|
.name = "em_x270-1",
|
|
.offset = MTDPART_OFS_APPEND,
|
|
.size = MTDPART_SIZ_FULL
|
|
},
|
|
};
|
|
|
|
static const char *em_x270_part_probes[] = { "cmdlinepart", NULL };
|
|
|
|
struct platform_nand_data em_x270_nand_platdata = {
|
|
.chip = {
|
|
.nr_chips = 1,
|
|
.chip_offset = 0,
|
|
.nr_partitions = ARRAY_SIZE(em_x270_partition_info),
|
|
.partitions = em_x270_partition_info,
|
|
.chip_delay = 20,
|
|
.part_probe_types = em_x270_part_probes,
|
|
},
|
|
.ctrl = {
|
|
.hwcontrol = 0,
|
|
.dev_ready = em_x270_nand_device_ready,
|
|
.select_chip = 0,
|
|
.cmd_ctrl = em_x270_nand_cmd_ctl,
|
|
},
|
|
};
|
|
|
|
static struct resource em_x270_nand_resource[] = {
|
|
[0] = {
|
|
.start = PXA_CS1_PHYS,
|
|
.end = PXA_CS1_PHYS + 12,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
};
|
|
|
|
static struct platform_device em_x270_nand = {
|
|
.name = "gen_nand",
|
|
.num_resources = ARRAY_SIZE(em_x270_nand_resource),
|
|
.resource = em_x270_nand_resource,
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = &em_x270_nand_platdata,
|
|
}
|
|
};
|
|
|
|
/* platform devices */
|
|
static struct platform_device *platform_devices[] __initdata = {
|
|
&em_x270_dm9k,
|
|
&em_x270_audio,
|
|
&em_x270_ts,
|
|
&em_x270_rtc,
|
|
&em_x270_nand,
|
|
};
|
|
|
|
|
|
/* PXA27x OHCI controller setup */
|
|
static int em_x270_ohci_init(struct device *dev)
|
|
{
|
|
/* Set the Power Control Polarity Low */
|
|
UHCHR = (UHCHR | UHCHR_PCPL) &
|
|
~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);
|
|
|
|
/* enable port 2 transiever */
|
|
UP2OCR = UP2OCR_HXS | UP2OCR_HXOE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pxaohci_platform_data em_x270_ohci_platform_data = {
|
|
.port_mode = PMM_PERPORT_MODE,
|
|
.init = em_x270_ohci_init,
|
|
};
|
|
|
|
|
|
static int em_x270_mci_init(struct device *dev,
|
|
irq_handler_t em_x270_detect_int,
|
|
void *data)
|
|
{
|
|
int err;
|
|
|
|
/* setup GPIO for PXA27x MMC controller */
|
|
pxa_gpio_mode(GPIO32_MMCCLK_MD);
|
|
pxa_gpio_mode(GPIO112_MMCCMD_MD);
|
|
pxa_gpio_mode(GPIO92_MMCDAT0_MD);
|
|
pxa_gpio_mode(GPIO109_MMCDAT1_MD);
|
|
pxa_gpio_mode(GPIO110_MMCDAT2_MD);
|
|
pxa_gpio_mode(GPIO111_MMCDAT3_MD);
|
|
|
|
/* EM-X270 uses GPIO13 as SD power enable */
|
|
pxa_gpio_mode(EM_X270_MMC_PD | GPIO_OUT);
|
|
|
|
err = request_irq(EM_X270_MMC_IRQ, em_x270_detect_int,
|
|
IRQF_DISABLED | IRQF_TRIGGER_FALLING,
|
|
"MMC card detect", data);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
|
|
__func__, err);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
|
|
{
|
|
/*
|
|
FIXME: current hardware implementation does not allow to
|
|
enable/disable MMC power. This will be fixed in next HW releases,
|
|
and we'll need to add implmentation here.
|
|
*/
|
|
return;
|
|
}
|
|
|
|
static void em_x270_mci_exit(struct device *dev, void *data)
|
|
{
|
|
free_irq(EM_X270_MMC_IRQ, data);
|
|
}
|
|
|
|
static struct pxamci_platform_data em_x270_mci_platform_data = {
|
|
.ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
|
|
.init = em_x270_mci_init,
|
|
.setpower = em_x270_mci_setpower,
|
|
.exit = em_x270_mci_exit,
|
|
};
|
|
|
|
/* LCD 480x640 */
|
|
static struct pxafb_mode_info em_x270_lcd_mode = {
|
|
.pixclock = 50000,
|
|
.bpp = 16,
|
|
.xres = 480,
|
|
.yres = 640,
|
|
.hsync_len = 8,
|
|
.vsync_len = 2,
|
|
.left_margin = 8,
|
|
.upper_margin = 0,
|
|
.right_margin = 24,
|
|
.lower_margin = 4,
|
|
.cmap_greyscale = 0,
|
|
};
|
|
|
|
static struct pxafb_mach_info em_x270_lcd = {
|
|
.modes = &em_x270_lcd_mode,
|
|
.num_modes = 1,
|
|
.cmap_inverse = 0,
|
|
.cmap_static = 0,
|
|
.lccr0 = LCCR0_PAS,
|
|
.lccr3 = LCCR3_PixClkDiv(0x01) | LCCR3_Acb(0xff),
|
|
};
|
|
|
|
static void __init em_x270_init(void)
|
|
{
|
|
/* setup LCD */
|
|
set_pxa_fb_info(&em_x270_lcd);
|
|
|
|
/* register EM-X270 platform devices */
|
|
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
|
|
|
|
/* set MCI and OHCI platform parameters */
|
|
pxa_set_mci_info(&em_x270_mci_platform_data);
|
|
pxa_set_ohci_info(&em_x270_ohci_platform_data);
|
|
|
|
/* setup STUART GPIOs */
|
|
pxa_gpio_mode(GPIO46_STRXD_MD);
|
|
pxa_gpio_mode(GPIO47_STTXD_MD);
|
|
|
|
/* setup BTUART GPIOs */
|
|
pxa_gpio_mode(GPIO42_BTRXD_MD);
|
|
pxa_gpio_mode(GPIO43_BTTXD_MD);
|
|
pxa_gpio_mode(GPIO44_BTCTS_MD);
|
|
pxa_gpio_mode(GPIO45_BTRTS_MD);
|
|
|
|
/* Setup interrupt for dm9000 */
|
|
set_irq_type(EM_X270_ETHIRQ, IRQT_RISING);
|
|
}
|
|
|
|
MACHINE_START(EM_X270, "Compulab EM-x270")
|
|
.boot_params = 0xa0000100,
|
|
.phys_io = 0x40000000,
|
|
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
|
|
.map_io = pxa_map_io,
|
|
.init_irq = pxa27x_init_irq,
|
|
.timer = &pxa_timer,
|
|
.init_machine = em_x270_init,
|
|
MACHINE_END
|