From 3696a8a426f8caebd97463e9b5cf9f06c1c36759 Mon Sep 17 00:00:00 2001
From: Mike Rapoport <mike@compulab.co.il>
Date: Sun, 23 Sep 2007 15:59:26 +0100
Subject: [ARM] 4576/1: CM-X270 machine support

This patch provides core support for CM-X270 platform.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mach-pxa/cm-x270.c | 645 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 645 insertions(+)
 create mode 100644 arch/arm/mach-pxa/cm-x270.c

(limited to 'arch/arm/mach-pxa/cm-x270.c')

diff --git a/arch/arm/mach-pxa/cm-x270.c b/arch/arm/mach-pxa/cm-x270.c
new file mode 100644
index 00000000000..177664ccb2e
--- /dev/null
+++ b/arch/arm/mach-pxa/cm-x270.c
@@ -0,0 +1,645 @@
+/*
+ * linux/arch/arm/mach-pxa/cm-x270.c
+ *
+ * Copyright (C) 2007 CompuLab, Ltd.
+ * 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/types.h>
+#include <linux/pm.h>
+#include <linux/fb.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/sysdev.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+
+#include <linux/dm9000.h>
+#include <linux/rtc-v3020.h>
+#include <linux/serial_8250.h>
+
+#include <video/mbxfb.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/ohci.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/bitfield.h>
+#include <asm/arch/cm-x270.h>
+
+#include <asm/hardware/it8152.h>
+
+#include "generic.h"
+#include "cm-x270-pci.h"
+
+#define RTC_PHYS_BASE		(PXA_CS1_PHYS + (5 << 22))
+#define DM9000_PHYS_BASE	(PXA_CS1_PHYS + (6 << 22))
+
+static struct resource cmx270_dm9k_resource[] = {
+	[0] = {
+		.start = DM9000_PHYS_BASE,
+		.end   = DM9000_PHYS_BASE + 4,
+		.flags = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start = DM9000_PHYS_BASE + 8,
+		.end   = DM9000_PHYS_BASE + 8 + 500,
+		.flags = IORESOURCE_MEM,
+	},
+	[2] = {
+		.start = CMX270_ETHIRQ,
+		.end   = CMX270_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 cmx270_dm9k_platdata = {
+	.flags		= DM9000_PLATF_32BITONLY,
+};
+
+/* Ethernet device */
+static struct platform_device cmx270_device_dm9k = {
+	.name		= "dm9000",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(cmx270_dm9k_resource),
+	.resource	= cmx270_dm9k_resource,
+	.dev		= {
+		.platform_data = &cmx270_dm9k_platdata,
+	}
+};
+
+/* audio device */
+static struct platform_device cmx270_audio_device = {
+	.name		= "pxa2xx-ac97",
+	.id		= -1,
+};
+
+/* touchscreen controller */
+static struct platform_device cmx270_ts_device = {
+	.name		= "ucb1400_ts",
+	.id		= -1,
+};
+
+/* RTC */
+static struct resource cmx270_v3020_resource[] = {
+	[0] = {
+		.start = RTC_PHYS_BASE,
+		.end   = RTC_PHYS_BASE + 4,
+		.flags = IORESOURCE_MEM,
+	},
+};
+
+struct v3020_platform_data cmx270_v3020_pdata = {
+	.leftshift = 16,
+};
+
+static struct platform_device cmx270_rtc_device = {
+	.name		= "v3020",
+	.num_resources	= ARRAY_SIZE(cmx270_v3020_resource),
+	.resource	= cmx270_v3020_resource,
+	.id		= -1,
+	.dev		= {
+		.platform_data = &cmx270_v3020_pdata,
+	}
+};
+
+/*
+ * CM-X270 LEDs
+ */
+static struct platform_device cmx270_led_device = {
+	.name		= "cm-x270-led",
+	.id		= -1,
+};
+
+/* 2700G graphics */
+static u64 fb_dma_mask = ~(u64)0;
+
+static struct resource cmx270_2700G_resource[] = {
+	/* frame buffer memory including ODFB and External SDRAM */
+	[0] = {
+		.start = MARATHON_PHYS,
+		.end   = MARATHON_PHYS + 0x02000000,
+		.flags = IORESOURCE_MEM,
+	},
+	/* Marathon registers */
+	[1] = {
+		.start = MARATHON_PHYS + 0x03fe0000,
+		.end   = MARATHON_PHYS + 0x03ffffff,
+		.flags = IORESOURCE_MEM,
+	},
+};
+
+static unsigned long save_lcd_regs[10];
+
+static int cmx270_marathon_probe(struct fb_info *fb)
+{
+	/* save PXA-270 pin settings before enabling 2700G */
+	save_lcd_regs[0] = GPDR1;
+	save_lcd_regs[1] = GPDR2;
+	save_lcd_regs[2] = GAFR1_U;
+	save_lcd_regs[3] = GAFR2_L;
+	save_lcd_regs[4] = GAFR2_U;
+
+	/* Disable PXA-270 on-chip controller driving pins */
+	GPDR1 &= ~(0xfc000000);
+	GPDR2 &= ~(0x00c03fff);
+	GAFR1_U &= ~(0xfff00000);
+	GAFR2_L &= ~(0x0fffffff);
+	GAFR2_U &= ~(0x0000f000);
+	return 0;
+}
+
+static int cmx270_marathon_remove(struct fb_info *fb)
+{
+	GPDR1 =   save_lcd_regs[0];
+	GPDR2 =   save_lcd_regs[1];
+	GAFR1_U = save_lcd_regs[2];
+	GAFR2_L = save_lcd_regs[3];
+	GAFR2_U = save_lcd_regs[4];
+	return 0;
+}
+
+static struct mbxfb_platform_data cmx270_2700G_data = {
+	.xres = {
+		.min = 240,
+		.max = 1200,
+		.defval = 640,
+	},
+	.yres = {
+		.min = 240,
+		.max = 1200,
+		.defval = 480,
+	},
+	.bpp = {
+		.min = 16,
+		.max = 32,
+		.defval = 16,
+	},
+	.memsize = 8*1024*1024,
+	.probe = cmx270_marathon_probe,
+	.remove = cmx270_marathon_remove,
+};
+
+static struct platform_device cmx270_2700G = {
+	.name		= "mbx-fb",
+	.dev		= {
+		.platform_data	= &cmx270_2700G_data,
+		.dma_mask	= &fb_dma_mask,
+		.coherent_dma_mask = 0xffffffff,
+	},
+	.num_resources	= ARRAY_SIZE(cmx270_2700G_resource),
+	.resource	= cmx270_2700G_resource,
+	.id		= -1,
+};
+
+static u64 ata_dma_mask = ~(u64)0;
+
+static struct platform_device cmx270_ata = {
+	.name = "pata_cm_x270",
+	.id = -1,
+	.dev		= {
+		.dma_mask	= &ata_dma_mask,
+		.coherent_dma_mask = 0xffffffff,
+	},
+};
+
+/* platform devices */
+static struct platform_device *platform_devices[] __initdata = {
+	&cmx270_device_dm9k,
+	&cmx270_audio_device,
+	&cmx270_rtc_device,
+	&cmx270_2700G,
+	&cmx270_led_device,
+	&cmx270_ts_device,
+	&cmx270_ata,
+};
+
+/* Map PCI companion and IDE/General Purpose CS statically */
+static struct map_desc cmx270_io_desc[] __initdata = {
+	[0] = { /* IDE/general purpose space */
+		.virtual	= CMX270_IDE104_VIRT,
+		.pfn		= __phys_to_pfn(CMX270_IDE104_PHYS),
+		.length		= SZ_64M - SZ_8M,
+		.type		= MT_DEVICE
+	},
+	[1] = { /* PCI bridge */
+		.virtual	= CMX270_IT8152_VIRT,
+		.pfn		= __phys_to_pfn(CMX270_IT8152_PHYS),
+		.length		= SZ_64M,
+		.type		= MT_DEVICE
+	},
+};
+
+/*
+  Display definitions
+  keep these for backwards compatibility, although symbolic names (as
+  e.g. in lpd270.c) looks better
+*/
+#define MTYPE_STN320x240	0
+#define MTYPE_TFT640x480	1
+#define MTYPE_CRT640x480	2
+#define MTYPE_CRT800x600	3
+#define MTYPE_TFT320x240	6
+#define MTYPE_STN640x480	7
+
+static struct pxafb_mode_info generic_stn_320x240_mode = {
+	.pixclock	= 76923,
+	.bpp		= 8,
+	.xres		= 320,
+	.yres		= 240,
+	.hsync_len	= 3,
+	.vsync_len	= 2,
+	.left_margin	= 3,
+	.upper_margin	= 0,
+	.right_margin	= 3,
+	.lower_margin	= 0,
+	.sync		= (FB_SYNC_HOR_HIGH_ACT |
+			   FB_SYNC_VERT_HIGH_ACT),
+	.cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info generic_stn_320x240 = {
+	.modes		= &generic_stn_320x240_mode,
+	.num_modes	= 1,
+	.lccr0		= 0,
+	.lccr3		= (LCCR3_PixClkDiv(0x03) |
+			   LCCR3_Acb(0xff) |
+			   LCCR3_PCP),
+	.cmap_inverse	= 0,
+	.cmap_static	= 0,
+};
+
+static struct pxafb_mode_info generic_tft_640x480_mode = {
+	.pixclock	= 38461,
+	.bpp		= 8,
+	.xres		= 640,
+	.yres		= 480,
+	.hsync_len	= 60,
+	.vsync_len	= 2,
+	.left_margin	= 70,
+	.upper_margin	= 10,
+	.right_margin	= 70,
+	.lower_margin	= 5,
+	.sync		= 0,
+	.cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info generic_tft_640x480 = {
+	.modes		= &generic_tft_640x480_mode,
+	.num_modes	= 1,
+	.lccr0		= (LCCR0_PAS),
+	.lccr3		= (LCCR3_PixClkDiv(0x01) |
+			   LCCR3_Acb(0xff) |
+			   LCCR3_PCP),
+	.cmap_inverse	= 0,
+	.cmap_static	= 0,
+};
+
+static struct pxafb_mode_info generic_crt_640x480_mode = {
+	.pixclock	= 38461,
+	.bpp		= 8,
+	.xres		= 640,
+	.yres		= 480,
+	.hsync_len	= 63,
+	.vsync_len	= 2,
+	.left_margin	= 81,
+	.upper_margin	= 33,
+	.right_margin	= 16,
+	.lower_margin	= 10,
+	.sync		= (FB_SYNC_HOR_HIGH_ACT |
+			   FB_SYNC_VERT_HIGH_ACT),
+	.cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info generic_crt_640x480 = {
+	.modes		= &generic_crt_640x480_mode,
+	.num_modes	= 1,
+	.lccr0		= (LCCR0_PAS),
+	.lccr3		= (LCCR3_PixClkDiv(0x01) |
+			   LCCR3_Acb(0xff)),
+	.cmap_inverse	= 0,
+	.cmap_static	= 0,
+};
+
+static struct pxafb_mode_info generic_crt_800x600_mode = {
+	.pixclock	= 28846,
+	.bpp		= 8,
+	.xres		= 800,
+	.yres	  	= 600,
+	.hsync_len	= 63,
+	.vsync_len	= 2,
+	.left_margin	= 26,
+	.upper_margin	= 21,
+	.right_margin	= 26,
+	.lower_margin	= 11,
+	.sync		= (FB_SYNC_HOR_HIGH_ACT |
+			   FB_SYNC_VERT_HIGH_ACT),
+	.cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info generic_crt_800x600 = {
+	.modes		= &generic_crt_800x600_mode,
+	.num_modes	= 1,
+	.lccr0		= (LCCR0_PAS),
+	.lccr3		= (LCCR3_PixClkDiv(0x02) |
+			   LCCR3_Acb(0xff)),
+	.cmap_inverse	= 0,
+	.cmap_static	= 0,
+};
+
+static struct pxafb_mode_info generic_tft_320x240_mode = {
+	.pixclock	= 134615,
+	.bpp		= 16,
+	.xres		= 320,
+	.yres		= 240,
+	.hsync_len	= 63,
+	.vsync_len	= 7,
+	.left_margin	= 75,
+	.upper_margin	= 0,
+	.right_margin	= 15,
+	.lower_margin	= 15,
+	.sync		= 0,
+	.cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info generic_tft_320x240 = {
+	.modes		= &generic_tft_320x240_mode,
+	.num_modes	= 1,
+	.lccr0		= (LCCR0_PAS),
+	.lccr3		= (LCCR3_PixClkDiv(0x06) |
+			   LCCR3_Acb(0xff) |
+			   LCCR3_PCP),
+	.cmap_inverse	= 0,
+	.cmap_static	= 0,
+};
+
+static struct pxafb_mode_info generic_stn_640x480_mode = {
+	.pixclock	= 57692,
+	.bpp		= 8,
+	.xres		= 640,
+	.yres		= 480,
+	.hsync_len	= 4,
+	.vsync_len	= 2,
+	.left_margin	= 10,
+	.upper_margin	= 5,
+	.right_margin	= 10,
+	.lower_margin	= 5,
+	.sync		= (FB_SYNC_HOR_HIGH_ACT |
+			   FB_SYNC_VERT_HIGH_ACT),
+	.cmap_greyscale = 0,
+};
+
+static struct pxafb_mach_info generic_stn_640x480 = {
+	.modes		= &generic_stn_640x480_mode,
+	.num_modes	= 1,
+	.lccr0		= 0,
+	.lccr3		= (LCCR3_PixClkDiv(0x02) |
+			   LCCR3_Acb(0xff)),
+	.cmap_inverse	= 0,
+	.cmap_static	= 0,
+};
+
+static struct pxafb_mach_info *cmx270_display = &generic_crt_640x480;
+
+static int __init cmx270_set_display(char *str)
+{
+	int disp_type = simple_strtol(str, NULL, 0);
+	switch (disp_type) {
+	case MTYPE_STN320x240:
+		cmx270_display = &generic_stn_320x240;
+		break;
+	case MTYPE_TFT640x480:
+		cmx270_display = &generic_tft_640x480;
+		break;
+	case MTYPE_CRT640x480:
+		cmx270_display = &generic_crt_640x480;
+		break;
+	case MTYPE_CRT800x600:
+		cmx270_display = &generic_crt_800x600;
+		break;
+	case MTYPE_TFT320x240:
+		cmx270_display = &generic_tft_320x240;
+		break;
+	case MTYPE_STN640x480:
+		cmx270_display = &generic_stn_640x480;
+		break;
+	default: /* fallback to CRT 640x480 */
+		cmx270_display = &generic_crt_640x480;
+		break;
+	}
+	return 1;
+}
+
+/*
+   This should be done really early to get proper configuration for
+   frame buffer.
+   Indeed, pxafb parameters can be used istead, but CM-X270 bootloader
+   has limitied line length for kernel command line, and also it will
+   break compatibitlty with proprietary releases already in field.
+*/
+__setup("monitor=", cmx270_set_display);
+
+/* PXA27x OHCI controller setup */
+static int cmx270_ohci_init(struct device *dev)
+{
+	/* Set the Power Control Polarity Low */
+	UHCHR = (UHCHR | UHCHR_PCPL) &
+		~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSE);
+
+	return 0;
+}
+
+static struct pxaohci_platform_data cmx270_ohci_platform_data = {
+	.port_mode	= PMM_PERPORT_MODE,
+	.init		= cmx270_ohci_init,
+};
+
+
+static int cmx270_mci_init(struct device *dev,
+			   irq_handler_t cmx270_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);
+
+	/* SB-X270 uses GPIO105 as SD power enable */
+	pxa_gpio_mode(105 | GPIO_OUT);
+
+	/* card detect IRQ on GPIO 83 */
+	pxa_gpio_mode(IRQ_TO_GPIO(CMX270_MMC_IRQ));
+	set_irq_type(CMX270_MMC_IRQ, IRQT_FALLING);
+
+	err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int,
+			  IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+			  "MMC card detect", data);
+	if (err) {
+		printk(KERN_ERR "cmx270_mci_init: MMC/SD: can't"
+		       " request MMC card detect IRQ\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static void cmx270_mci_setpower(struct device *dev, unsigned int vdd)
+{
+	struct pxamci_platform_data *p_d = dev->platform_data;
+
+	if ((1 << vdd) & p_d->ocr_mask) {
+		printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
+		GPCR(105) = GPIO_bit(105);
+	} else {
+		GPSR(105) = GPIO_bit(105);
+		printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
+	}
+}
+
+static void cmx270_mci_exit(struct device *dev, void *data)
+{
+	free_irq(CMX270_MMC_IRQ, data);
+}
+
+static struct pxamci_platform_data cmx270_mci_platform_data = {
+	.ocr_mask	= MMC_VDD_32_33|MMC_VDD_33_34,
+	.init 		= cmx270_mci_init,
+	.setpower 	= cmx270_mci_setpower,
+	.exit		= cmx270_mci_exit,
+};
+
+#ifdef CONFIG_PM
+static unsigned long sleep_save_msc[10];
+
+static int cmx270_suspend(struct sys_device *dev, pm_message_t state)
+{
+	cmx270_pci_suspend();
+
+	/* save MSC registers */
+	sleep_save_msc[0] = MSC0;
+	sleep_save_msc[1] = MSC1;
+	sleep_save_msc[2] = MSC2;
+
+	/* setup power saving mode registers */
+	PCFR = 0x0;
+	PSLR = 0xff400000;
+	PMCR  = 0x00000005;
+	PWER  = 0x80000000;
+	PFER  = 0x00000000;
+	PRER  = 0x00000000;
+	PGSR0 = 0xC0018800;
+	PGSR1 = 0x004F0002;
+	PGSR2 = 0x6021C000;
+	PGSR3 = 0x00020000;
+
+	return 0;
+}
+
+static int cmx270_resume(struct sys_device *dev)
+{
+	cmx270_pci_resume();
+
+	/* restore MSC registers */
+	MSC0 = sleep_save_msc[0];
+	MSC1 = sleep_save_msc[1];
+	MSC2 = sleep_save_msc[2];
+
+	return 0;
+}
+
+static struct sysdev_class cmx270_pm_sysclass = {
+	set_kset_name("pm"),
+	.resume = cmx270_resume,
+	.suspend = cmx270_suspend,
+};
+
+static struct sys_device cmx270_pm_device = {
+	.cls = &cmx270_pm_sysclass,
+};
+
+static int __init cmx270_pm_init(void)
+{
+	int error;
+	error = sysdev_class_register(&cmx270_pm_sysclass);
+	if (error == 0)
+		error = sysdev_register(&cmx270_pm_device);
+	return error;
+}
+#else
+static int __init cmx270_pm_init(void) { return 0; }
+#endif
+
+static void __init cmx270_init(void)
+{
+	cmx270_pm_init();
+
+	set_pxa_fb_info(cmx270_display);
+
+	/* register CM-X270 platform devices */
+	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+	/* set MCI and OHCI platform parameters */
+	pxa_set_mci_info(&cmx270_mci_platform_data);
+	pxa_set_ohci_info(&cmx270_ohci_platform_data);
+
+	/* This enables the STUART */
+	pxa_gpio_mode(GPIO46_STRXD_MD);
+	pxa_gpio_mode(GPIO47_STTXD_MD);
+
+	/* This enables the BTUART  */
+	pxa_gpio_mode(GPIO42_BTRXD_MD);
+	pxa_gpio_mode(GPIO43_BTTXD_MD);
+	pxa_gpio_mode(GPIO44_BTCTS_MD);
+	pxa_gpio_mode(GPIO45_BTRTS_MD);
+}
+
+static void __init cmx270_init_irq(void)
+{
+	pxa27x_init_irq();
+
+
+	cmx270_pci_init_irq();
+
+	/* Setup interrupt for dm9000 */
+	pxa_gpio_mode(IRQ_TO_GPIO(CMX270_ETHIRQ));
+	set_irq_type(CMX270_ETHIRQ, IRQT_RISING);
+
+	/* Setup interrupt for 2700G */
+	pxa_gpio_mode(IRQ_TO_GPIO(CMX270_GFXIRQ));
+	set_irq_type(CMX270_GFXIRQ, IRQT_FALLING);
+}
+
+static void __init cmx270_map_io(void)
+{
+	pxa_map_io();
+	iotable_init(cmx270_io_desc, ARRAY_SIZE(cmx270_io_desc));
+}
+
+
+MACHINE_START(ARMCORE, "Compulab CM-x270")
+	.boot_params	= 0xa0000100,
+	.phys_io	= 0x40000000,
+	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
+	.map_io		= cmx270_map_io,
+	.init_irq	= cmx270_init_irq,
+	.timer		= &pxa_timer,
+	.init_machine	= cmx270_init,
+MACHINE_END
-- 
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