[ARM] 3417/1: add support for logicpd pxa270 card engine

Patch from Lennert Buytenhek

Add support for the LogicPD PXA270 Card Engine.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 393 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/lpd270.c b/arch/arm/mach-pxa/lpd270.c
new file mode 100644
index 00000000000..ec0f43a102c
--- /dev/null
+++ b/arch/arm/mach-pxa/lpd270.c
@@ -0,0 +1,393 @@
+/*
+ * linux/arch/arm/mach-pxa/lpd270.c
+ *
+ * Support for the LogicPD PXA270 Card Engine.
+ * Derived from the mainstone code, which carries these notices:
+ *
+ * Author:	Nicolas Pitre
+ * Created:	Nov 05, 2002
+ * Copyright:	MontaVista Software Inc.
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/sysdev.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+#include <linux/fb.h>
+#include <linux/ioport.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/flash.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/lpd270.h>
+#include <asm/arch/audio.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/mmc.h>
+#include <asm/arch/irda.h>
+#include <asm/arch/ohci.h>
+
+#include "generic.h"
+
+
+static unsigned int lpd270_irq_enabled;
+
+static void lpd270_mask_irq(unsigned int irq)
+{
+	int lpd270_irq = irq - LPD270_IRQ(0);
+
+	__raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
+
+	lpd270_irq_enabled &= ~(1 << lpd270_irq);
+	__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
+}
+
+static void lpd270_unmask_irq(unsigned int irq)
+{
+	int lpd270_irq = irq - LPD270_IRQ(0);
+
+	lpd270_irq_enabled |= 1 << lpd270_irq;
+	__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
+}
+
+static struct irqchip lpd270_irq_chip = {
+	.ack		= lpd270_mask_irq,
+	.mask		= lpd270_mask_irq,
+	.unmask		= lpd270_unmask_irq,
+};
+
+static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc,
+				  struct pt_regs *regs)
+{
+	unsigned long pending;
+
+	pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
+	do {
+		GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
+		if (likely(pending)) {
+			irq = LPD270_IRQ(0) + __ffs(pending);
+			desc = irq_desc + irq;
+			desc_handle_irq(irq, desc, regs);
+
+			pending = __raw_readw(LPD270_INT_STATUS) &
+						lpd270_irq_enabled;
+		}
+	} while (pending);
+}
+
+static void __init lpd270_init_irq(void)
+{
+	int irq;
+
+	pxa_init_irq();
+
+	__raw_writew(0, LPD270_INT_MASK);
+	__raw_writew(0, LPD270_INT_STATUS);
+
+	/* setup extra LogicPD PXA270 irqs */
+	for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
+		set_irq_chip(irq, &lpd270_irq_chip);
+		set_irq_handler(irq, do_level_IRQ);
+		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+	}
+	set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
+	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
+}
+
+
+#ifdef CONFIG_PM
+static int lpd270_irq_resume(struct sys_device *dev)
+{
+	__raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
+	return 0;
+}
+
+static struct sysdev_class lpd270_irq_sysclass = {
+	set_kset_name("cpld_irq"),
+	.resume = lpd270_irq_resume,
+};
+
+static struct sys_device lpd270_irq_device = {
+	.cls = &lpd270_irq_sysclass,
+};
+
+static int __init lpd270_irq_device_init(void)
+{
+	int ret = sysdev_class_register(&lpd270_irq_sysclass);
+	if (ret == 0)
+		ret = sysdev_register(&lpd270_irq_device);
+	return ret;
+}
+
+device_initcall(lpd270_irq_device_init);
+#endif
+
+
+static struct resource smc91x_resources[] = {
+	[0] = {
+		.start	= LPD270_ETH_PHYS,
+		.end	= (LPD270_ETH_PHYS + 0xfffff),
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= LPD270_ETHERNET_IRQ,
+		.end	= LPD270_ETHERNET_IRQ,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device smc91x_device = {
+	.name		= "smc91x",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(smc91x_resources),
+	.resource	= smc91x_resources,
+};
+
+static struct platform_device lpd270_audio_device = {
+	.name		= "pxa2xx-ac97",
+	.id		= -1,
+};
+
+static struct resource lpd270_flash_resources[] = {
+	[0] = {
+		.start	= PXA_CS0_PHYS,
+		.end	= PXA_CS0_PHYS + SZ_64M - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= PXA_CS1_PHYS,
+		.end	= PXA_CS1_PHYS + SZ_64M - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static struct mtd_partition lpd270_flash0_partitions[] = {
+	{
+		.name =		"Bootloader",
+		.size =		0x00040000,
+		.offset =	0,
+		.mask_flags =	MTD_WRITEABLE  /* force read-only */
+	}, {
+		.name =		"Kernel",
+		.size =		0x00400000,
+		.offset =	0x00040000,
+	}, {
+		.name =		"Filesystem",
+		.size =		MTDPART_SIZ_FULL,
+		.offset =	0x00440000
+	},
+};
+
+static struct flash_platform_data lpd270_flash_data[2] = {
+	{
+		.name		= "processor-flash",
+		.map_name	= "cfi_probe",
+		.parts		= lpd270_flash0_partitions,
+		.nr_parts	= ARRAY_SIZE(lpd270_flash0_partitions),
+	}, {
+		.name		= "mainboard-flash",
+		.map_name	= "cfi_probe",
+		.parts		= NULL,
+		.nr_parts	= 0,
+	}
+};
+
+static struct platform_device lpd270_flash_device[2] = {
+	{
+		.name		= "pxa2xx-flash",
+		.id		= 0,
+		.dev = {
+			.platform_data	= &lpd270_flash_data[0],
+		},
+		.resource	= &lpd270_flash_resources[0],
+		.num_resources	= 1,
+	}, {
+		.name		= "pxa2xx-flash",
+		.id		= 1,
+		.dev = {
+			.platform_data	= &lpd270_flash_data[1],
+		},
+		.resource	= &lpd270_flash_resources[1],
+		.num_resources	= 1,
+	},
+};
+
+static void lpd270_backlight_power(int on)
+{
+	if (on) {
+		pxa_gpio_mode(GPIO16_PWM0_MD);
+		pxa_set_cken(CKEN0_PWM0, 1);
+		PWM_CTRL0 = 0;
+		PWM_PWDUTY0 = 0x3ff;
+		PWM_PERVAL0 = 0x3ff;
+	} else {
+		PWM_CTRL0 = 0;
+		PWM_PWDUTY0 = 0x0;
+		PWM_PERVAL0 = 0x3FF;
+		pxa_set_cken(CKEN0_PWM0, 0);
+	}
+}
+
+/* 5.7" TFT QVGA (LoLo display number 1) */
+static struct pxafb_mach_info sharp_lq057q3dc02 __initdata = {
+	.pixclock		= 100000,
+	.xres			= 240,
+	.yres			= 320,
+	.bpp			= 16,
+	.hsync_len		= 64,
+	.left_margin		= 0x27,
+	.right_margin		= 0x09,
+	.vsync_len		= 0x04,
+	.upper_margin		= 0x08,
+	.lower_margin		= 0x14,
+	.sync			= 0,
+	.lccr0			= 0x07800080,
+	.lccr3			= 0x04400007,
+	.pxafb_backlight_power	= lpd270_backlight_power,
+};
+
+/* 6.4" TFT VGA (LoLo display number 5) */
+static struct pxafb_mach_info sharp_lq64d343 __initdata = {
+	.pixclock		= 20000,
+	.xres			= 640,
+	.yres			= 480,
+	.bpp			= 16,
+	.hsync_len		= 49,
+	.left_margin		= 0x89,
+	.right_margin		= 0x19,
+	.vsync_len		= 18,
+	.upper_margin		= 0x22,
+	.lower_margin		= 0,
+	.sync			= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	.lccr0			= 0x07800080,
+	.lccr3			= 0x04400001,
+	.pxafb_backlight_power	= lpd270_backlight_power,
+};
+
+/* 3.5" TFT QVGA (LoLo display number 8) */
+static struct pxafb_mach_info sharp_lq035q7db02_20 __initdata = {
+	.pixclock		= 100000,
+	.xres			= 240,
+	.yres			= 320,
+	.bpp			= 16,
+	.hsync_len		= 0x34,
+	.left_margin		= 0x09,
+	.right_margin		= 0x09,
+	.vsync_len		= 0x08,
+	.upper_margin		= 0x05,
+	.lower_margin		= 0x14,
+	.sync			= 0,
+	.lccr0			= 0x07800080,
+	.lccr3			= 0x04400007,
+	.pxafb_backlight_power	= lpd270_backlight_power,
+};
+
+static struct platform_device *platform_devices[] __initdata = {
+	&smc91x_device,
+	&lpd270_audio_device,
+	&lpd270_flash_device[0],
+	&lpd270_flash_device[1],
+};
+
+static int lpd270_ohci_init(struct device *dev)
+{
+	/* setup Port1 GPIO pin. */
+	pxa_gpio_mode(88 | GPIO_ALT_FN_1_IN);	/* USBHPWR1 */
+	pxa_gpio_mode(89 | GPIO_ALT_FN_2_OUT);	/* USBHPEN1 */
+
+	/* Set the Power Control Polarity Low and Power Sense
+	   Polarity Low to active low. */
+	UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
+		~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
+
+	return 0;
+}
+
+static struct pxaohci_platform_data lpd270_ohci_platform_data = {
+	.port_mode	= PMM_PERPORT_MODE,
+	.init		= lpd270_ohci_init,
+};
+
+static void __init lpd270_init(void)
+{
+	lpd270_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
+	lpd270_flash_data[1].width = 4;
+
+	/*
+	 * System bus arbiter setting:
+	 * - Core_Park
+	 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
+	 */
+	ARB_CNTRL = ARB_CORE_PARK | 0x234;
+
+	/*
+	 * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
+	 */
+	pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
+
+	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+
+	// set_pxa_fb_info(&sharp_lq057q3dc02);
+	set_pxa_fb_info(&sharp_lq64d343);
+	// set_pxa_fb_info(&sharp_lq035q7db02_20);
+
+	pxa_set_ohci_info(&lpd270_ohci_platform_data);
+}
+
+
+static struct map_desc lpd270_io_desc[] __initdata = {
+	{
+		.virtual	= LPD270_CPLD_VIRT,
+		.pfn		= __phys_to_pfn(LPD270_CPLD_PHYS),
+		.length		= LPD270_CPLD_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+static void __init lpd270_map_io(void)
+{
+	pxa_map_io();
+	iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
+
+	/* initialize sleep mode regs (wake-up sources, etc) */
+	PGSR0 = 0x00008800;
+	PGSR1 = 0x00000002;
+	PGSR2 = 0x0001FC00;
+	PGSR3 = 0x00001F81;
+	PWER  = 0xC0000002;
+	PRER  = 0x00000002;
+	PFER  = 0x00000002;
+
+	/* for use I SRAM as framebuffer.  */
+	PSLR |= 0x00000F04;
+	PCFR  = 0x00000066;
+}
+
+MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
+	/* Maintainer: Peter Barada */
+	.phys_io	= 0x40000000,
+	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
+	.boot_params	= 0xa0000100,
+	.map_io		= lpd270_map_io,
+	.init_irq	= lpd270_init_irq,
+	.timer		= &pxa_timer,
+	.init_machine	= lpd270_init,
+MACHINE_END