[xburst] Add support for the n516

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19987 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/xburst/files-2.6.32/arch/mips/include/asm/mach-jz4740/board-n516.h

@@ -0,0 +1,39 @@
+/*
+ *  linux/include/asm-mips/mach-jz4740/board-n516.h
+ *
+ *  JZ4730-based N516 board definition.
+ *
+ *  Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_JZ4740_N516_H__
+#define __ASM_JZ4740_N516_H__
+
+#include <asm/mach-jz4740/gpio.h>
+
+/*
+ * GPIO
+ */
+#define GPIO_SD_VCC_EN_N	JZ_GPIO_PORTD(17)
+#define GPIO_SD_CD_N		JZ_GPIO_PORTD(7)
+#define GPIO_SD_WP		JZ_GPIO_PORTD(15)
+#define GPIO_USB_DETECT		JZ_GPIO_PORTD(19)
+#define GPIO_CHARG_STAT_N	JZ_GPIO_PORTD(16)
+#define GPIO_LED_ENABLE       	JZ_GPIO_PORTD(28)
+#define GPIO_LPC_INT		JZ_GPIO_PORTD(14)
+#define GPIO_HPHONE_DETECT	JZ_GPIO_PORTD(20)
+#define GPIO_SPEAKER_ENABLE	JZ_GPIO_PORTD(21)
+
+/* Display */
+#define GPIO_DISPLAY_RST_L	JZ_GPIO_PORTB(18)
+#define GPIO_DISPLAY_RDY	JZ_GPIO_PORTB(17)
+#define GPIO_DISPLAY_STBY	JZ_GPIO_PORTC(22)
+#define GPIO_DISPLAY_ERR	JZ_GPIO_PORTC(23)
+#define GPIO_DISPLAY_OFF_N	JZ_GPIO_PORTD(1)
+
+#endif /* __ASM_JZ4740_N516_H__ */

target/linux/xburst/files-2.6.32/arch/mips/jz4740/Kconfig

@@ -8,6 +8,11 @@ config JZ4740_QI_LB60
 	select DMA_NONCOHERENT
 	select SOC_JZ4740
 
+config JZ4740_N516
+	bool "Hanvon n516 eBook reader"
+	select DMA_NONCOHERENT
+	select SOC_JZ4740
+
 config JZ4740_N526
 	bool "Hanvon n526 eBook reader"
 	select DMA_NONCOHERENT

target/linux/xburst/files-2.6.32/arch/mips/jz4740/Makefile

@@ -12,9 +12,10 @@ obj-$(CONFIG_DEBUG_FS) += clock-debugfs.o
 # board specific support
 
 obj-$(CONFIG_JZ4740_QI_LB60)	+= board-qi_lb60.o
+obj-$(CONFIG_JZ4740_N516)	+= board-n516.o board-n516-display.o
 obj-$(CONFIG_JZ4740_N526)	+= board-n526.o
 
 # PM support
 
-obj-$(CONFIG_PM)         +=pm.o
+obj-$(CONFIG_PM)         += pm.o
 

target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n516-display.c

@@ -0,0 +1,395 @@
+/*
+ * board-n516-display.c -- Platform device for N516 display
+ *
+ * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/jz4740_fb.h>
+
+#include <asm/mach-jz4740/platform.h>
+#include <asm/mach-jz4740/board-n516.h>
+
+#include <video/metronomefb.h>
+#include <linux/console.h>
+
+extern struct platform_device jz_lcd_device;
+
+static struct fb_videomode n516_fb_modes[] = {
+	[0] = {
+		.name		= "Metronome 800x600",
+		.refresh	= 50,
+		.xres		= 400,
+		.yres		= 624,
+		.hsync_len	= 31,
+		.vsync_len	= 23,
+		.right_margin	= 31,
+		.left_margin	= 5,
+		.upper_margin	= 1,
+		.lower_margin	= 2,
+		.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+	},
+};
+
+static struct jz4740_fb_platform_data n516_fb_pdata = {
+	.num_modes	= ARRAY_SIZE(n516_fb_modes),
+	.modes		= n516_fb_modes,
+	.bpp		= 16,
+	.lcd_type	= JZ_LCD_TYPE_GENERIC_16_BIT,
+};
+
+struct n516_board_info {
+	uint8_t *metromem;
+	size_t wfm_size;
+	struct fb_info *host_fbinfo; /* the host LCD controller's fbi */
+	unsigned int fw;
+	unsigned int fh;
+};
+
+static struct platform_device *n516_device;
+static struct n516_board_info n516_board_info;
+
+static int metronome_gpios[] = {
+	GPIO_DISPLAY_STBY,
+	GPIO_DISPLAY_RST_L,
+	GPIO_DISPLAY_RDY,
+	GPIO_DISPLAY_ERR,
+/*	GPIO_DISPLAY_OFF,*/
+};
+
+static const char *metronome_gpio_names[] = {
+	"Metronome STDBY",
+	"Metronome RST",
+	"Metronome RDY",
+	"Metronome ERR",
+/*	"Metronone OFF",*/
+};
+
+static int n516_enable_hostfb(bool enable)
+{
+	int ret;
+	int blank = enable ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+
+	acquire_console_sem();
+	ret = fb_blank(n516_board_info.host_fbinfo, blank);
+	release_console_sem();
+
+	return ret;
+}
+
+static int n516_init_metronome_gpios(struct metronomefb_par *par)
+{
+	int i;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(metronome_gpios); ++i) {
+		ret = gpio_request(metronome_gpios[i], metronome_gpio_names[i]);
+		if (ret)
+			goto err;
+	}
+
+	gpio_direction_output(GPIO_DISPLAY_OFF, 0);
+	gpio_direction_output(GPIO_DISPLAY_RST_L, 0);
+	gpio_direction_output(GPIO_DISPLAY_STBY, 0);
+	gpio_direction_input(GPIO_DISPLAY_RDY);
+	gpio_direction_input(GPIO_DISPLAY_ERR);
+
+	return 0;
+err:
+	for (--i; i >= 0; --i)
+		gpio_free(metronome_gpios[i]);
+
+	return ret;
+}
+
+static int n516_share_video_mem(struct fb_info *info)
+{
+	int ret;
+
+	dev_dbg(&n516_device->dev, "ENTER %s\n", __func__);
+	dev_dbg(&n516_device->dev, "%s, info->var.xres = %u, info->var.yres = %u\n", __func__, info->var.xres, info->var.yres);
+	/* rough check if this is our desired fb and not something else */
+	if ((info->var.xres != n516_fb_pdata.modes[0].xres)
+		|| (info->var.yres != n516_fb_pdata.modes[0].yres))
+		return 0;
+
+	/* we've now been notified that we have our new fb */
+	n516_board_info.metromem = info->screen_base;
+	n516_board_info.host_fbinfo = info;
+
+	n516_enable_hostfb(false);
+	/* try to refcount host drv since we are the consumer after this */
+	if (!try_module_get(info->fbops->owner))
+		return -ENODEV;
+
+	/* this _add binds metronomefb to n516. metronomefb refcounts n516 */
+	ret = platform_device_add(n516_device);
+
+	if (ret) {
+		platform_device_put(n516_device);
+		return ret;
+	}
+
+	/* request our platform independent driver */
+	request_module("metronomefb");
+
+	return 0;
+}
+
+static int n516_unshare_video_mem(struct fb_info *info)
+{
+	dev_dbg(&n516_device->dev, "ENTER %s\n", __func__);
+
+	if (info != n516_board_info.host_fbinfo)
+		return 0;
+
+	module_put(n516_board_info.host_fbinfo->fbops->owner);
+	return 0;
+}
+
+static int n516_fb_notifier_callback(struct notifier_block *self,
+				 unsigned long event, void *data)
+{
+	struct fb_event *evdata = data;
+	struct fb_info *info = evdata->info;
+
+	dev_dbg(&n516_device->dev, "ENTER %s\n", __func__);
+
+	if (event == FB_EVENT_FB_REGISTERED)
+		return n516_share_video_mem(info);
+	else if (event == FB_EVENT_FB_UNREGISTERED)
+		return n516_unshare_video_mem(info);
+
+	return 0;
+}
+
+static struct notifier_block n516_fb_notif = {
+	.notifier_call = n516_fb_notifier_callback,
+};
+
+/* this gets called as part of our init. these steps must be done now so
+ * that we can use set_pxa_fb_info */
+static void __init n516_presetup_fb(void)
+{
+	int padding_size;
+	int totalsize;
+
+	/* the frame buffer is divided as follows:
+	command | CRC | padding
+	16kb waveform data | CRC | padding
+	image data | CRC
+	*/
+
+	n516_board_info.fw = 800;
+	n516_board_info.fh = 624;
+
+	/* waveform must be 16k + 2 for checksum */
+	n516_board_info.wfm_size = roundup(16*1024 + 2, n516_board_info.fw);
+
+	padding_size = PAGE_SIZE + (4 * n516_board_info.fw);
+
+	/* total is 1 cmd , 1 wfm, padding and image */
+	totalsize = n516_board_info.fw + n516_board_info.wfm_size;
+	totalsize += padding_size + (n516_board_info.fw*n516_board_info.fh);
+
+	/* save this off because we're manipulating fw after this and
+	 * we'll need it when we're ready to setup the framebuffer */
+
+	/* the reason we do this adjustment is because we want to acquire
+	 * more framebuffer memory without imposing custom awareness on the
+	 * underlying driver */
+	n516_fb_pdata.modes[0].yres = DIV_ROUND_UP(totalsize, n516_board_info.fw);
+
+	jz4740_framebuffer_device.dev.platform_data = &n516_fb_pdata;
+	platform_device_register(&jz4740_framebuffer_device);
+}
+
+/* this gets called by metronomefb as part of its init, in our case, we
+ * have already completed initial framebuffer init in presetup_fb so we
+ * can just setup the fb access pointers */
+static int n516_setup_fb(struct metronomefb_par *par)
+{
+	/* metromem was set up by the notifier in share_video_mem so now
+	 * we can use its value to calculate the other entries */
+	par->metromem_cmd = (struct metromem_cmd *) n516_board_info.metromem;
+	par->metromem_wfm = n516_board_info.metromem + n516_board_info.fw;
+	par->metromem_img = par->metromem_wfm + n516_board_info.wfm_size;
+	par->metromem_img_csum = (u16 *) (par->metromem_img + (n516_board_info.fw * n516_board_info.fh));
+	par->metromem_dma = n516_board_info.host_fbinfo->fix.smem_start;
+
+	return 0;
+}
+
+static int n516_get_panel_type(void)
+{
+	return 5;
+}
+
+static irqreturn_t n516_handle_irq(int irq, void *dev_id)
+{
+	struct metronomefb_par *par = dev_id;
+
+	dev_dbg(&par->pdev->dev, "Metronome IRQ! RDY=%d\n", 	gpio_get_value(GPIO_DISPLAY_RDY));
+	wake_up_all(&par->waitq);
+
+	return IRQ_HANDLED;
+}
+
+static void n516_power_ctl(struct metronomefb_par *par, int cmd)
+{
+	switch (cmd) {
+	case METRONOME_POWER_OFF:
+		gpio_set_value(GPIO_DISPLAY_OFF, 1);
+		n516_enable_hostfb(false);
+		break;
+	case METRONOME_POWER_ON:
+		gpio_set_value(GPIO_DISPLAY_OFF, 0);
+		n516_enable_hostfb(true);
+		break;
+	}
+}
+
+static int n516_get_rdy(struct metronomefb_par *par)
+{
+	return gpio_get_value(GPIO_DISPLAY_RDY);
+}
+
+static int n516_get_err(struct metronomefb_par *par)
+{
+	return gpio_get_value(GPIO_DISPLAY_ERR);
+}
+
+static int n516_setup_irq(struct fb_info *info)
+{
+	int ret;
+
+	dev_dbg(&n516_device->dev, "ENTER %s\n", __func__);
+
+	ret = request_irq(gpio_to_irq(GPIO_DISPLAY_RDY), n516_handle_irq,
+				IRQF_TRIGGER_RISING,
+				"n516", info->par);
+	if (ret)
+		dev_err(&n516_device->dev, "request_irq failed: %d\n", ret);
+
+	return ret;
+}
+
+static void n516_set_rst(struct metronomefb_par *par, int state)
+{
+	dev_dbg(&n516_device->dev, "ENTER %s, RDY=%d\n", __func__, gpio_get_value(GPIO_DISPLAY_RDY));
+	if (state)
+		gpio_set_value(GPIO_DISPLAY_RST_L, 1);
+	else
+		gpio_set_value(GPIO_DISPLAY_RST_L, 0);
+}
+
+static void n516_set_stdby(struct metronomefb_par *par, int state)
+{
+	dev_dbg(&n516_device->dev, "ENTER %s, RDY=%d\n", __func__, gpio_get_value(GPIO_DISPLAY_RDY));
+	if (state)
+		gpio_set_value(GPIO_DISPLAY_STBY, 1);
+	else
+		gpio_set_value(GPIO_DISPLAY_STBY, 0);
+}
+
+static int n516_wait_event(struct metronomefb_par *par)
+{
+	unsigned long timeout = jiffies + HZ / 20;
+
+	dev_dbg(&n516_device->dev, "ENTER1 %s, RDY=%d\n",
+			__func__, gpio_get_value(GPIO_DISPLAY_RDY));
+	while (n516_get_rdy(par) && time_before(jiffies, timeout))
+		schedule();
+
+	dev_dbg(&n516_device->dev, "ENTER2 %s, RDY=%d\n",
+			__func__, gpio_get_value(GPIO_DISPLAY_RDY));
+	return wait_event_timeout(par->waitq,
+			n516_get_rdy(par), HZ * 2) ? 0 : -EIO;
+}
+
+static int n516_wait_event_intr(struct metronomefb_par *par)
+{
+	unsigned long timeout = jiffies + HZ/20;
+
+	dev_dbg(&n516_device->dev, "ENTER1 %s, RDY=%d\n",
+			__func__, gpio_get_value(GPIO_DISPLAY_RDY));
+	while (n516_get_rdy(par) && time_before(jiffies, timeout))
+		schedule();
+
+	dev_dbg(&n516_device->dev, "ENTER2 %s, RDY=%d\n",
+			__func__, gpio_get_value(GPIO_DISPLAY_RDY));
+	return wait_event_interruptible_timeout(par->waitq,
+					n516_get_rdy(par), HZ * 2) ? 0 : -EIO;
+}
+
+static void n516_cleanup(struct metronomefb_par *par)
+{
+	int i;
+
+	free_irq(gpio_to_irq(GPIO_DISPLAY_RDY), par);
+	for (i = 0; i < ARRAY_SIZE(metronome_gpios); ++i)
+		gpio_free(metronome_gpios[i]);
+}
+
+static struct metronome_board n516_board __initdata = {
+	.owner			= THIS_MODULE,
+	.power_ctl		= n516_power_ctl,
+	.setup_irq		= n516_setup_irq,
+	.setup_io		= n516_init_metronome_gpios,
+	.setup_fb		= n516_setup_fb,
+	.set_rst		= n516_set_rst,
+	.get_err		= n516_get_err,
+	.get_rdy		= n516_get_rdy,
+	.set_stdby		= n516_set_stdby,
+	.met_wait_event		= n516_wait_event,
+	.met_wait_event_intr	= n516_wait_event_intr,
+	.get_panel_type		= n516_get_panel_type,
+	.cleanup		= n516_cleanup,
+};
+
+static int __init n516_init(void)
+{
+	int ret;
+
+	/* Keep the metronome off, until its driver is loaded */
+	ret = gpio_request(GPIO_DISPLAY_OFF, "Display off");
+	if (ret)
+		return ret;
+
+	gpio_direction_output(GPIO_DISPLAY_OFF, 1);
+
+	/* before anything else, we request notification for any fb
+	 * creation events */
+	fb_register_client(&n516_fb_notif);
+
+	n516_device = platform_device_alloc("metronomefb", -1);
+	if (!n516_device)
+		return -ENOMEM;
+
+	/* the n516_board that will be seen by metronomefb is a copy */
+	platform_device_add_data(n516_device, &n516_board,
+					sizeof(n516_board));
+
+	n516_presetup_fb();
+
+	return 0;
+}
+module_init(n516_init);
+
+MODULE_DESCRIPTION("board driver for n516 display");
+MODULE_AUTHOR("Yauhen Kharuzhy");
+MODULE_LICENSE("GPL");

target/linux/xburst/files-2.6.32/arch/mips/jz4740/board-n516.c

@@ -0,0 +1,201 @@
+/*
+ * linux/arch/mips/jz4740/board-516.c
+ *
+ * JZ4740 n516 board setup routines.
+ *
+ * Copyright (c) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mmc/jz4740_mmc.h>
+#include <linux/mtd/jz4740_nand.h>
+#include <linux/leds.h>
+
+#include <linux/power_supply.h>
+#include <linux/power/gpio-charger.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
+
+#include <asm/mach-jz4740/board-n516.h>
+#include <asm/mach-jz4740/platform.h>
+
+#include "clock.h"
+
+static long n516_panic_blink(long time)
+{
+	gpio_set_value(GPIO_LED_ENABLE, 1);
+	mdelay(200);
+	gpio_set_value(GPIO_LED_ENABLE, 0);
+	mdelay(200);
+
+	return 400;
+}
+
+static void __init board_gpio_setup(void)
+{
+/*	jz_gpio_enable_pullup(JZ_GPIO_PORTD(23));
+	jz_gpio_enable_pullup(JZ_GPIO_PORTD(24));*/
+}
+
+static struct i2c_gpio_platform_data n516_i2c_pdata = {
+	.sda_pin = JZ_GPIO_PORTD(23),
+	.scl_pin = JZ_GPIO_PORTD(24),
+	.udelay = 2,
+	.timeout = 3 * HZ,
+};
+
+static struct platform_device n516_i2c_device = {
+	.name = "i2c-gpio",
+	.id = -1,
+	.dev = {
+		.platform_data = &n516_i2c_pdata,
+	},
+};
+
+static const struct i2c_board_info n516_i2c_board_info[] = {
+	{
+		.type		= "LPC524",
+		.addr		= 0x54,
+	},
+	{
+		.type		= "lm75a",
+		.addr		= 0x48,
+	}
+};
+
+static struct jz4740_mmc_platform_data n516_mmc_pdata = {
+	.gpio_card_detect	= GPIO_SD_CD_N,
+	.card_detect_active_low = 1,
+	.gpio_read_only		= -1,
+	.gpio_power		= GPIO_SD_VCC_EN_N,
+	.power_active_low = 1,
+};
+
+static struct gpio_led n516_leds[] = {
+	{
+		.name = "n516:blue:power",
+		.gpio = GPIO_LED_ENABLE,
+		.default_state = LEDS_GPIO_DEFSTATE_ON,
+		.default_trigger = "nand-disk",
+	}
+};
+
+static struct gpio_led_platform_data n516_leds_pdata = {
+	.leds = n516_leds,
+	.num_leds = ARRAY_SIZE(n516_leds),
+};
+
+static struct platform_device n516_leds_device = {
+	.name = "leds-gpio",
+	.id = -1,
+	.dev = {
+		.platform_data = &n516_leds_pdata,
+	},
+};
+
+static struct mtd_partition n516_partitions[] = {
+	{ .name = "NAND BOOT partition",
+	  .offset = 0 * 0x100000,
+	  .size = 4 * 0x100000,
+ 	},
+	{ .name = "NAND KERNEL partition",
+	  .offset = 4 * 0x100000,
+	  .size = 4 * 0x100000,
+ 	},
+	{ .name = "NAND ROOTFS partition",
+	  .offset = 8 * 0x100000,
+	  .size = 504 * 0x100000,
+ 	},
+};
+
+static struct nand_ecclayout n516_ecclayout = {
+	.eccbytes = 36,
+	.eccpos = {
+		 6,  7,  8,  9, 10, 11, 12, 13, 14,
+		15, 16, 17, 18, 19, 20, 21, 22, 23,
+		24, 25, 26, 27, 28, 29, 30, 31, 32,
+		33, 34, 35, 36, 37, 38, 39, 40, 41,
+	},
+	.oobfree = {
+		{.offset = 2,
+		 .length = 4},
+		{.offset = 42,
+		 .length = 22}}
+};
+
+static struct jz_nand_platform_data n516_nand_pdata = {
+	.ecc_layout = &n516_ecclayout,
+	.partitions = n516_partitions,
+	.num_partitions = ARRAY_SIZE(n516_partitions),
+	.busy_gpio = 94,
+};
+
+static char *n516_batteries[] = {
+	"n516_battery",
+};
+
+static struct gpio_charger_platform_data n516_charger_pdata = {
+	.name = "usb",
+	.type = POWER_SUPPLY_TYPE_USB,
+	.gpio = GPIO_USB_DETECT,
+	.gpio_active_low = 1,
+	.batteries = n516_batteries,
+	.num_batteries = ARRAY_SIZE(n516_batteries),
+};
+
+static struct platform_device n516_charger_device = {
+	.name = "gpio-charger",
+	.dev = {
+		.platform_data = &n516_charger_pdata,
+	},
+};
+
+static struct platform_device *n516_devices[] __initdata = {
+	&jz4740_nand_device,
+	&n516_leds_device,
+	&jz4740_mmc_device,
+	&jz4740_i2s_device,
+	&jz4740_codec_device,
+	&jz4740_rtc_device,
+	&jz4740_usb_gdt_device,
+	&n516_i2c_device,
+	&n516_charger_device,
+};
+
+struct jz4740_clock_board_data jz4740_clock_bdata = {
+	.ext_rate = 12000000,
+	.rtc_rate = 32768,
+};
+
+extern int jz_gpiolib_init(void);
+
+static int n516_setup_platform(void)
+{
+	if (jz_gpiolib_init())
+		panic("Failed to initalize jz gpio\n");
+
+	jz4740_clock_init();
+	board_gpio_setup();
+
+	panic_blink = n516_panic_blink;
+	i2c_register_board_info(0, n516_i2c_board_info, ARRAY_SIZE(n516_i2c_board_info));
+	jz4740_mmc_device.dev.platform_data = &n516_mmc_pdata;
+	jz4740_nand_device.dev.platform_data = &n516_nand_pdata;
+
+	return platform_add_devices(n516_devices, ARRAY_SIZE(n516_devices));
+}
+arch_initcall(n516_setup_platform);

target/linux/xburst/files-2.6.32/drivers/i2c/chips/n516-lpc.c

@@ -0,0 +1,491 @@
+/*
+ * board-n516-display.c -- Platform device for N516 display
+ *
+ * Copyright (C) 2009, Yauhen Kharuzhy <jekhor@gmail.com>
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/power_supply.h>
+#include <linux/suspend.h>
+
+#include <linux/i2c.h>
+
+#include <asm/mach-jz4740/irq.h>
+#include <asm/mach-jz4740/gpio.h>
+#include <asm/mach-jz4740/board-n516.h>
+
+
+static int batt_level=0;
+module_param(batt_level, int, 0);
+
+struct n516_lpc_chip {
+	struct i2c_client	*i2c_client;
+	struct input_dev	*input;
+	unsigned int		battery_level;
+	unsigned int		suspending:1, can_sleep:1;
+};
+
+static struct n516_lpc_chip *the_lpc;
+
+struct i2c_device_id n516_lpc_i2c_ids[] = {
+	{"LPC524", 0},
+	{},
+};
+
+MODULE_DEVICE_TABLE(i2c, n516_lpc_i2c_ids);
+
+static const unsigned short normal_i2c[] = {0x54, I2C_CLIENT_END};
+
+static const unsigned int n516_lpc_keymap[] = {
+	[0x01] = KEY_4,
+	[0x02] = KEY_3,
+	[0x03] = KEY_2,
+	[0x04] = KEY_1,
+	[0x05] = KEY_0,
+	[0x07] = KEY_9,
+	[0x08] = KEY_8,
+	[0x09] = KEY_7,
+	[0x0a] = KEY_6,
+	[0x0b] = KEY_5,
+	[0x0d] = KEY_PLAYPAUSE,
+	[0x0e] = KEY_MENU,
+	[0x0f] = KEY_SEARCH,
+	[0x10] = KEY_DIRECTION,
+	[0x11] = KEY_SPACE,
+	[0x13] = KEY_ENTER,
+	[0x14] = KEY_UP,
+	[0x15] = KEY_DOWN,
+	[0x16] = KEY_RIGHT,
+	[0x17] = KEY_LEFT,
+	[0x19] = KEY_PAGEDOWN,
+	[0x1a] = KEY_PAGEUP,
+	[0x1c] = KEY_POWER,
+	[0x1d] = KEY_ESC,
+	[0x1e] = KEY_SLEEP,
+/*	[0x1f] = KEY_WAKEUP,*/
+};
+
+static const unsigned int batt_charge[] = {0, 7, 20, 45, 65, 80, 100};
+#define MAX_BAT_LEVEL (ARRAY_SIZE(batt_charge) - 1)
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(n516_lpc);
+
+static inline int n516_bat_usb_connected(void)
+{
+	return !gpio_get_value(GPIO_USB_DETECT);
+}
+
+static inline int n516_bat_charging(void)
+{
+	return !gpio_get_value(GPIO_CHARG_STAT_N);
+}
+
+static int n516_bat_get_status(struct power_supply *b)
+{
+	if (n516_bat_usb_connected()) {
+		if (n516_bat_charging())
+			return POWER_SUPPLY_STATUS_CHARGING;
+		else
+			return POWER_SUPPLY_STATUS_FULL;
+	} else {
+		return POWER_SUPPLY_STATUS_DISCHARGING;
+	}
+}
+
+static int n516_bat_get_charge(struct power_supply *b)
+{
+	return batt_charge[the_lpc->battery_level];
+}
+
+static int n516_bat_get_property(struct power_supply *b,
+		enum power_supply_property psp,
+		union power_supply_propval *val)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = n516_bat_get_status(b);
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+		val->intval = 100;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
+		val->intval = 0;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_NOW:
+		val->intval = n516_bat_get_charge(b);
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static void n516_bat_power_changed(struct power_supply *p)
+{
+	power_supply_changed(p);
+}
+
+static enum power_supply_property n516_bat_properties[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+	POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
+};
+
+static struct power_supply n516_battery = {
+	.name		= "n516-battery",
+	.get_property	= n516_bat_get_property,
+	.properties	= n516_bat_properties,
+	.num_properties	= ARRAY_SIZE(n516_bat_properties),
+	.external_power_changed = n516_bat_power_changed,
+};
+
+static irqreturn_t n516_bat_charge_irq(int irq, void *dev)
+{
+	struct power_supply *psy = dev;
+
+	dev_dbg(psy->dev, "Battery charging IRQ\n");
+
+	if (n516_bat_usb_connected() && !n516_bat_charging())
+		the_lpc->battery_level = MAX_BAT_LEVEL;
+
+	power_supply_changed(psy);
+
+	return IRQ_HANDLED;
+}
+
+static int n516_lpc_set_normal_mode(struct n516_lpc_chip *chip)
+{
+	struct i2c_client *client = chip->i2c_client;
+	unsigned char val = 0x02;
+	struct i2c_msg msg = {client->addr, client->flags, 1, &val};
+	int ret = 0;
+
+	ret = i2c_transfer(client->adapter, &msg, 1);
+	return ret > 0 ? 0 : ret;
+}
+
+static void n516_key_event(struct n516_lpc_chip *chip, unsigned char keycode)
+{
+	struct i2c_client *client = chip->i2c_client;
+	bool long_press = false;
+
+	if (keycode & 0x40) {
+		keycode &= ~0x40;
+		long_press = true;
+	}
+
+	dev_dbg(&client->dev, "keycode: 0x%02x, long_press: 0x%02x\n", keycode, (unsigned int)long_press);
+
+	if (keycode >= ARRAY_SIZE(n516_lpc_keymap) || n516_lpc_keymap[keycode] == 0)
+		return;
+
+	if (long_press)
+		input_report_key(chip->input, KEY_LEFTALT, 1);
+
+	input_report_key(chip->input, n516_lpc_keymap[keycode], 1);
+	input_sync(chip->input);
+	input_report_key(chip->input, n516_lpc_keymap[keycode], 0);
+
+	if (long_press)
+		input_report_key(chip->input, KEY_LEFTALT, 0);
+	input_sync(chip->input);
+}
+
+
+static void n516_battery_event(struct n516_lpc_chip *chip, unsigned char battery_level)
+{
+	if (battery_level != chip->battery_level) {
+		chip->battery_level = battery_level;
+		power_supply_changed(&n516_battery);
+	}
+}
+
+static irqreturn_t n516_lpc_irq(int irq, void *devid)
+{
+	struct n516_lpc_chip *chip = (struct n516_lpc_chip*)devid;
+	int ret;
+	unsigned char raw_msg;
+	struct i2c_client *client = chip->i2c_client;
+	struct i2c_msg msg = {client->addr, client->flags | I2C_M_RD, 1, &raw_msg};
+
+	ret = i2c_transfer(client->adapter, &msg, 1);
+	if (ret != 1) {
+		dev_dbg(&client->dev, "I2C error: %d\n", ret);
+		return IRQ_HANDLED;
+	}
+
+	dev_dbg(&client->dev, "msg: 0x%02x\n", raw_msg);
+
+	if ((raw_msg & 0x40) < ARRAY_SIZE(n516_lpc_keymap)) {
+		n516_key_event(chip, raw_msg);
+	} else if ((raw_msg >= 0x81) && (raw_msg <= 0x87)) {
+		n516_battery_event(chip, raw_msg - 0x81);
+	} else {
+		n516_lpc_set_normal_mode(chip);
+		dev_warn(&client->dev, "Unkown message: %x\n", raw_msg);
+		ret = i2c_transfer(client->adapter, &msg, 1);
+		if (ret != 1) {
+			dev_dbg(&client->dev, "I2C error: %d\n", ret);
+		} else {
+			dev_warn(&client->dev, "Unkown message part 2: %x\n", raw_msg);
+		}
+
+}
+
+	if (chip->suspending)
+		chip->can_sleep = 0;
+
+	printk("foobar\n");
+
+	return IRQ_HANDLED;
+}
+
+static void n516_lpc_power_off(void)
+{
+	struct i2c_client *client = the_lpc->i2c_client;
+	unsigned char val = 0x01;
+	struct i2c_msg msg = {client->addr, client->flags, 1, &val};
+
+	printk("Issue LPC POWEROFF command...\n");
+	while (1)
+		i2c_transfer(client->adapter, &msg, 1);
+}
+
+static int n516_lpc_detect(struct i2c_client *client, int kind, struct i2c_board_info *info)
+{
+	return 0;
+}
+
+static int n516_lpc_suspend_notifier(struct notifier_block *nb,
+		                                unsigned long event,
+						void *dummy)
+{
+	switch(event) {
+	case PM_SUSPEND_PREPARE:
+		the_lpc->suspending = 1;
+		the_lpc->can_sleep = 1;
+		break;
+	case PM_POST_SUSPEND:
+		the_lpc->suspending = 0;
+		the_lpc->can_sleep = 1;
+		break;
+	default:
+		return NOTIFY_DONE;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block n516_lpc_notif_block = {
+	.notifier_call = n516_lpc_suspend_notifier,
+};
+
+static int n516_lpc_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+	struct n516_lpc_chip *chip;
+	struct input_dev *input;
+	int ret = 0;
+	int i;
+
+	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	the_lpc = chip;
+	chip->i2c_client = client;
+	if ((batt_level > 0) && (batt_level < ARRAY_SIZE(batt_charge)))
+		chip->battery_level = batt_level;
+	i2c_set_clientdata(client, chip);
+
+	ret = gpio_request(GPIO_LPC_INT, "LPC interrupt request");
+	if (ret) {
+		dev_err(&client->dev, "Unable to reguest LPC INT GPIO\n");
+		goto err_gpio_req_lpcint;
+	}
+
+	ret = gpio_request(GPIO_CHARG_STAT_N, "LPC interrupt request");
+	if (ret) {
+		dev_err(&client->dev, "Unable to reguest CHARG STAT GPIO\n");
+		goto err_gpio_req_chargstat;
+	}
+
+	n516_lpc_set_normal_mode(chip);
+
+	input = input_allocate_device();
+	if (!input) {
+		dev_err(&client->dev, "Unable to allocate input device\n");
+		ret = -ENOMEM;
+		goto err_input_alloc;
+	}
+
+	chip->input = input;
+
+	__set_bit(EV_KEY, input->evbit);
+
+	for (i = 0; i < ARRAY_SIZE(n516_lpc_keymap); i++)
+		__set_bit(n516_lpc_keymap[i], input->keybit);
+
+	__set_bit(KEY_LEFTALT, input->keybit);
+
+	input->name = "n516-keys";
+	input->phys = "n516-keys/input0";
+	input->dev.parent = &client->dev;
+	input->id.bustype = BUS_I2C;
+	input->id.vendor = 0x0001;
+	input->id.product = 0x0001;
+	input->id.version = 0x0100;
+
+	ret = input_register_device(input);
+	if (ret < 0) {
+		dev_err(&client->dev, "Unable to register input device\n");
+		goto err_input_register;
+	}
+
+	ret = power_supply_register(NULL, &n516_battery);
+	if (ret) {
+		dev_err(&client->dev, "Unable to register N516 battery\n");
+		goto err_bat_reg;
+	}
+
+	if (n516_bat_usb_connected() && !n516_bat_charging())
+		the_lpc->battery_level = MAX_BAT_LEVEL;
+
+	ret = request_threaded_irq(gpio_to_irq(GPIO_LPC_INT), NULL, n516_lpc_irq,
+			IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "lpc", chip);
+	if (ret) {
+		dev_err(&client->dev, "request_irq failed: %d\n", ret);
+		goto err_request_lpc_irq;
+	}
+
+	ret = request_irq(gpio_to_irq(GPIO_CHARG_STAT_N), n516_bat_charge_irq,
+				IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "battery charging", &n516_battery);
+	if (ret) {
+		dev_err(&client->dev, "Unable to claim battery charging IRQ\n");
+		goto err_request_chrg_irq;
+	}
+
+	pm_power_off = n516_lpc_power_off;
+	ret = register_pm_notifier(&n516_lpc_notif_block);
+	if (ret) {
+		dev_err(&client->dev, "Unable to register PM notify block\n");
+		goto err_reg_pm_notifier;
+	}
+
+	device_init_wakeup(&client->dev, 1);
+
+	return 0;
+
+	unregister_pm_notifier(&n516_lpc_notif_block);
+err_reg_pm_notifier:
+	free_irq(gpio_to_irq(GPIO_CHARG_STAT_N), &n516_battery);
+err_request_chrg_irq:
+	free_irq(gpio_to_irq(GPIO_LPC_INT), chip);
+err_request_lpc_irq:
+	power_supply_unregister(&n516_battery);
+err_bat_reg:
+	input_unregister_device(input);
+err_input_register:
+	input_free_device(input);
+err_input_alloc:
+	gpio_free(GPIO_CHARG_STAT_N);
+err_gpio_req_chargstat:
+	gpio_free(GPIO_LPC_INT);
+err_gpio_req_lpcint:
+	i2c_set_clientdata(client, NULL);
+	kfree(chip);
+
+	return ret;
+}
+
+static int n516_lpc_remove(struct i2c_client *client)
+{
+	struct n516_lpc_chip *chip = i2c_get_clientdata(client);
+
+	unregister_pm_notifier(&n516_lpc_notif_block);
+	pm_power_off = NULL;
+	free_irq(gpio_to_irq(GPIO_CHARG_STAT_N), &n516_battery);
+	free_irq(gpio_to_irq(GPIO_LPC_INT), chip);
+	power_supply_unregister(&n516_battery);
+	input_unregister_device(chip->input);
+	gpio_free(GPIO_CHARG_STAT_N);
+	gpio_free(GPIO_LPC_INT);
+	i2c_set_clientdata(client, NULL);
+	kfree(chip);
+
+	return 0;
+}
+
+#if CONFIG_PM
+static int n516_lpc_suspend(struct i2c_client *client, pm_message_t msg)
+{
+	if (!the_lpc->can_sleep)
+		return -EBUSY;
+
+	if (device_may_wakeup(&client->dev))
+		enable_irq_wake(gpio_to_irq(GPIO_LPC_INT));
+
+	return 0;
+}
+
+static int n516_lpc_resume(struct i2c_client *client)
+{
+	if (device_may_wakeup(&client->dev))
+		disable_irq_wake(gpio_to_irq(GPIO_LPC_INT));
+
+	return 0;
+}
+#else
+#define n516_lpc_suspend NULL
+#define n516_lpc_resume NULL
+#endif
+
+static struct i2c_driver n516_lpc_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver		= {
+		.name	= "n516-keys",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= n516_lpc_probe,
+	.remove		= __devexit_p(n516_lpc_remove),
+	.detect		= n516_lpc_detect,
+	.id_table	= n516_lpc_i2c_ids,
+	.address_data	= &addr_data,
+	.suspend	= n516_lpc_suspend,
+	.resume		= n516_lpc_resume,
+};
+
+static int n516_lpc_init(void)
+{
+	return i2c_add_driver(&n516_lpc_driver);
+}
+module_init(n516_lpc_init);
+
+static void n516_lpc_exit(void)
+{
+	i2c_del_driver(&n516_lpc_driver);
+}
+module_exit(n516_lpc_exit);
+
+MODULE_AUTHOR("Yauhen Kharuzhy");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Keys and power controller driver for N516");
+MODULE_ALIAS("platform:n516-keys");

target/linux/xburst/files-2.6.32/include/video/metronomefb.h

@@ -0,0 +1,67 @@
+/*
+ * metronomefb.h - definitions for the metronome framebuffer driver
+ *
+ * Copyright (C) 2008 by Jaya Kumar
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ */
+
+#ifndef _LINUX_METRONOMEFB_H_
+#define _LINUX_METRONOMEFB_H_
+
+/* command structure used by metronome controller */
+struct metromem_cmd {
+	u16 opcode;
+	u16 args[((64-2)/2)];
+	u16 csum;
+} __attribute__(packed);
+
+/* struct used by metronome. board specific stuff comes from *board */
+struct metronomefb_par {
+	struct metromem_cmd *metromem_cmd;
+	unsigned char *metromem_wfm;
+	unsigned char *metromem_img;
+	u16 *metromem_img_csum;
+	u16 *csum_table;
+	dma_addr_t metromem_dma;
+	const struct firmware *firmware;
+	struct fb_info *info;
+	struct metronome_board *board;
+	struct platform_device *pdev;
+	wait_queue_head_t waitq;
+	u8 frame_count;
+	int extra_size;
+	int current_wf_mode;
+	int current_wf_temp;
+	unsigned int manual_refresh_threshold;
+	unsigned int partial_autorefresh_interval;
+	int dt;
+	u32 *fxbuckets;
+	u32 *fybuckets;
+	struct mutex lock;
+};
+
+#define METRONOME_POWER_OFF	0
+#define METRONOME_POWER_ON	1
+
+/* board specific routines and data */
+struct metronome_board {
+	struct module *owner; /* the platform device */
+	void (*power_ctl)(struct metronomefb_par *, int);
+	void (*set_rst)(struct metronomefb_par *, int);
+	void (*set_stdby)(struct metronomefb_par *, int);
+	int (*get_err)(struct metronomefb_par *);
+	int (*get_rdy)(struct metronomefb_par *);
+	void (*cleanup)(struct metronomefb_par *);
+	int (*met_wait_event)(struct metronomefb_par *);
+	int (*met_wait_event_intr)(struct metronomefb_par *);
+	int (*setup_irq)(struct fb_info *);
+	int (*setup_fb)(struct metronomefb_par *);
+	int (*setup_io)(struct metronomefb_par *);
+	int (*get_panel_type)(void);
+};
+
+#endif

target/linux/xburst/n516/config-2.6.32

@@ -0,0 +1,25 @@
+CONFIG_FB_DEFERRED_IO=y
+CONFIG_FB_JZ4740=y
+CONFIG_FB_METRONOME=m
+CONFIG_FB_SYS_FOPS=m
+# CONFIG_FRAMEBUFFER_CONSOLE is not set
+CONFIG_HWMON=y
+# CONFIG_HWMON_DEBUG_CHIP is not set
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_GPIO=y
+CONFIG_JZ4740_N516=y
+# CONFIG_KEYBOARD_GPIO is not set
+CONFIG_LEDS_GPIO=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_N516_LPC=y
+CONFIG_NEW_LEDS=y
+# CONFIG_REGULATOR_FIXED_VOLTAGE is not set
+# CONFIG_REGULATOR_LP3971 is not set
+# CONFIG_REGULATOR_MAX1586 is not set
+# CONFIG_REGULATOR_TPS65023 is not set
+# CONFIG_REGULATOR_TPS6507X is not set
+CONFIG_SENSORS_LM75=y
+# CONFIG_USB_ARCH_HAS_HCD is not set
+# CONFIG_USB_ARCH_HAS_OHCI is not set

target/linux/xburst/n516/target.mk

@@ -0,0 +1,2 @@
+BOARDNAME:=Hanvon N516 e-book reader
+#DEFAULT_PACKAGES += uboot-xburst-n516

target/linux/xburst/patches-2.6.32/800-n5x6-lpc.patch

@@ -10,10 +10,18 @@ Subject: [PATCH] /opt/Projects/openwrt/target/linux/xburst/patches-2.6.31/800-n5
 
 --- a/drivers/i2c/chips/Kconfig
 +++ b/drivers/i2c/chips/Kconfig
-@@ -26,4 +26,13 @@ config SENSORS_TSL2550
+@@ -26,4 +26,21 @@ config SENSORS_TSL2550
  	  This driver can also be built as a module.  If so, the module
  	  will be called tsl2550.
  
++config N516_LPC
++	tristate "N516 keys & power controller"
++	depends on I2C
++	depends on INPUT
++	depends on POWER_SUPPLY
++	help
++	  N516 keyboard & power controller driver
++
 +config N526_LPC
 +	tristate "N526 LPC934 coprocessor"
 +	depends on JZ4740_N526
@@ -26,10 +34,11 @@ Subject: [PATCH] /opt/Projects/openwrt/target/linux/xburst/patches-2.6.31/800-n5
  endmenu
 --- a/drivers/i2c/chips/Makefile
 +++ b/drivers/i2c/chips/Makefile
-@@ -12,6 +12,7 @@
+@@ -12,6 +12,8 @@
  
  obj-$(CONFIG_DS1682)		+= ds1682.o
  obj-$(CONFIG_SENSORS_TSL2550)	+= tsl2550.o
++obj-$(CONFIG_N516_LPC)		+= n516-lpc.o
 +obj-$(CONFIG_N526_LPC)		+= n526-lpc.o
  
  ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)