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-rw-r--r--arch/arm/mach-pxa/mainstone.c316
1 files changed, 316 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
new file mode 100644
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--- /dev/null
+++ b/arch/arm/mach-pxa/mainstone.c
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+/*
+ * linux/arch/arm/mach-pxa/mainstone.c
+ *
+ * Support for the Intel HCDDBBVA0 Development Platform.
+ * (go figure how they came up with such name...)
+ *
+ * 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/device.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+#include <linux/fb.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/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/mainstone.h>
+#include <asm/arch/audio.h>
+#include <asm/arch/pxafb.h>
+#include <asm/arch/mmc.h>
+
+#include "generic.h"
+
+
+static unsigned long mainstone_irq_enabled;
+
+static void mainstone_mask_irq(unsigned int irq)
+{
+ int mainstone_irq = (irq - MAINSTONE_IRQ(0));
+ MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
+}
+
+static void mainstone_unmask_irq(unsigned int irq)
+{
+ int mainstone_irq = (irq - MAINSTONE_IRQ(0));
+ /* the irq can be acknowledged only if deasserted, so it's done here */
+ MST_INTSETCLR &= ~(1 << mainstone_irq);
+ MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
+}
+
+static struct irqchip mainstone_irq_chip = {
+ .ack = mainstone_mask_irq,
+ .mask = mainstone_mask_irq,
+ .unmask = mainstone_unmask_irq,
+};
+
+
+static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
+ struct pt_regs *regs)
+{
+ unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
+ do {
+ GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
+ if (likely(pending)) {
+ irq = MAINSTONE_IRQ(0) + __ffs(pending);
+ desc = irq_desc + irq;
+ desc->handle(irq, desc, regs);
+ }
+ pending = MST_INTSETCLR & mainstone_irq_enabled;
+ } while (pending);
+}
+
+static void __init mainstone_init_irq(void)
+{
+ int irq;
+
+ pxa_init_irq();
+
+ /* setup extra Mainstone irqs */
+ for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
+ set_irq_chip(irq, &mainstone_irq_chip);
+ set_irq_handler(irq, do_level_IRQ);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+ set_irq_flags(MAINSTONE_IRQ(8), 0);
+ set_irq_flags(MAINSTONE_IRQ(12), 0);
+
+ MST_INTMSKENA = 0;
+ MST_INTSETCLR = 0;
+
+ set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
+ set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
+}
+
+
+static struct resource smc91x_resources[] = {
+ [0] = {
+ .start = (MST_ETH_PHYS + 0x300),
+ .end = (MST_ETH_PHYS + 0xfffff),
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = MAINSTONE_IRQ(3),
+ .end = MAINSTONE_IRQ(3),
+ .flags = IORESOURCE_IRQ,
+ }
+};
+
+static struct platform_device smc91x_device = {
+ .name = "smc91x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(smc91x_resources),
+ .resource = smc91x_resources,
+};
+
+static int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
+{
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
+ return 0;
+}
+
+static void mst_audio_shutdown(snd_pcm_substream_t *substream, void *priv)
+{
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
+}
+
+static long mst_audio_suspend_mask;
+
+static void mst_audio_suspend(void *priv)
+{
+ mst_audio_suspend_mask = MST_MSCWR2;
+ MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
+}
+
+static void mst_audio_resume(void *priv)
+{
+ MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
+}
+
+static pxa2xx_audio_ops_t mst_audio_ops = {
+ .startup = mst_audio_startup,
+ .shutdown = mst_audio_shutdown,
+ .suspend = mst_audio_suspend,
+ .resume = mst_audio_resume,
+};
+
+static struct platform_device mst_audio_device = {
+ .name = "pxa2xx-ac97",
+ .id = -1,
+ .dev = { .platform_data = &mst_audio_ops },
+};
+
+static void mainstone_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);
+ }
+}
+
+static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
+ .pixclock = 50000,
+ .xres = 640,
+ .yres = 480,
+ .bpp = 16,
+ .hsync_len = 1,
+ .left_margin = 0x9f,
+ .right_margin = 1,
+ .vsync_len = 44,
+ .upper_margin = 0,
+ .lower_margin = 0,
+ .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
+ .lccr0 = LCCR0_Act,
+ .lccr3 = LCCR3_PCP,
+ .pxafb_backlight_power = mainstone_backlight_power,
+};
+
+static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
+ .pixclock = 110000,
+ .xres = 240,
+ .yres = 320,
+ .bpp = 16,
+ .hsync_len = 4,
+ .left_margin = 8,
+ .right_margin = 20,
+ .vsync_len = 3,
+ .upper_margin = 1,
+ .lower_margin = 10,
+ .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
+ .lccr0 = LCCR0_Act,
+ .lccr3 = LCCR3_PCP,
+ .pxafb_backlight_power = mainstone_backlight_power,
+};
+
+static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), 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);
+
+ /* make sure SD/Memory Stick multiplexer's signals
+ * are routed to MMC controller
+ */
+ MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
+
+ err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, SA_INTERRUPT,
+ "MMC card detect", data);
+ if (err) {
+ printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void mainstone_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__);
+ MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
+ MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
+ } else {
+ printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
+ MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
+ }
+}
+
+static void mainstone_mci_exit(struct device *dev, void *data)
+{
+ free_irq(MAINSTONE_MMC_IRQ, data);
+}
+
+static struct pxamci_platform_data mainstone_mci_platform_data = {
+ .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
+ .init = mainstone_mci_init,
+ .setpower = mainstone_mci_setpower,
+ .exit = mainstone_mci_exit,
+};
+
+static void __init mainstone_init(void)
+{
+ /*
+ * On Mainstone, we route AC97_SYSCLK via GPIO45 to
+ * the audio daughter card
+ */
+ pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
+
+ platform_device_register(&smc91x_device);
+ platform_device_register(&mst_audio_device);
+
+ /* reading Mainstone's "Virtual Configuration Register"
+ might be handy to select LCD type here */
+ if (0)
+ set_pxa_fb_info(&toshiba_ltm04c380k);
+ else
+ set_pxa_fb_info(&toshiba_ltm035a776c);
+
+ pxa_set_mci_info(&mainstone_mci_platform_data);
+}
+
+
+static struct map_desc mainstone_io_desc[] __initdata = {
+ { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
+};
+
+static void __init mainstone_map_io(void)
+{
+ pxa_map_io();
+ iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
+
+ /* initialize sleep mode regs (wake-up sources, etc) */
+ PGSR0 = 0x00008800;
+ PGSR1 = 0x00000002;
+ PGSR2 = 0x0001FC00;
+ PGSR3 = 0x00001F81;
+ PWER = 0xC0000002;
+ PRER = 0x00000002;
+ PFER = 0x00000002;
+}
+
+MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
+ MAINTAINER("MontaVista Software Inc.")
+ BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
+ MAPIO(mainstone_map_io)
+ INITIRQ(mainstone_init_irq)
+ .timer = &pxa_timer,
+ INIT_MACHINE(mainstone_init)
+MACHINE_END
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