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Openwrt/target/linux/xburst/patches-2.6.36/006-add-n516-board-support.patch
Lars-Peter Clausen 6144179d61 Add 2.6.36 patches 
SVN-Revision: 23421
2010-10-13 01:55:44 +00:00

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From c8e520077c339cbc623aa629588865c7c3ff2937 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Sat, 24 Apr 2010 17:25:01 +0200
Subject: [PATCH] Add n516 board support
---
arch/mips/include/asm/mach-jz4740/board-n516.h | 39 +++
arch/mips/jz4740/Kconfig | 3 +
arch/mips/jz4740/Makefile | 1 +
arch/mips/jz4740/board-n516-display.c | 394 ++++++++++++++++++++++++
arch/mips/jz4740/board-n516.c | 182 +++++++++++
5 files changed, 619 insertions(+), 0 deletions(-)
create mode 100644 arch/mips/include/asm/mach-jz4740/board-n516.h
create mode 100644 arch/mips/jz4740/board-n516-display.c
create mode 100644 arch/mips/jz4740/board-n516.c
--- /dev/null
+++ b/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__ */
--- a/arch/mips/jz4740/Kconfig
+++ b/arch/mips/jz4740/Kconfig
@@ -6,6 +6,9 @@ choice
config JZ4740_QI_LB60
bool "Qi Hardware Ben NanoNote"
+config JZ4740_N516
+ bool "Hanvon n516 eBook reader"
+
endchoice
config HAVE_PWM
--- a/arch/mips/jz4740/Makefile
+++ b/arch/mips/jz4740/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_DEBUG_FS) += clock-debugfs.
# board specific support
obj-$(CONFIG_JZ4740_QI_LB60) += board-qi_lb60.o
+obj-$(CONFIG_JZ4740_N516) += board-n516.o board-n516-display.o
# PM support
--- /dev/null
+++ b/arch/mips/jz4740/board-n516-display.c
@@ -0,0 +1,394 @@
+/*
+ * 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 <asm/mach-jz4740/jz4740_fb.h>
+
+#include <asm/mach-jz4740/platform.h>
+#include <asm/mach-jz4740/board-n516.h>
+
+#include <video/metronomefb.h>
+#include <linux/console.h>
+
+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_N,*/
+};
+
+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_N, 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_N, 1);
+ n516_enable_hostfb(false);
+ break;
+ case METRONOME_POWER_ON:
+ gpio_set_value(GPIO_DISPLAY_OFF_N, 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_N, "Display off");
+ if (ret)
+ return ret;
+
+ gpio_direction_output(GPIO_DISPLAY_OFF_N, 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");
--- /dev/null
+++ b/arch/mips/jz4740/board-n516.c
@@ -0,0 +1,182 @@
+/*
+ * 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/leds.h>
+
+#include <linux/power_supply.h>
+#include <linux/power/gpio-charger.h>
+
+#include <linux/i2c.h>
+
+#include <asm/mach-jz4740/jz4740_mmc.h>
+#include <asm/mach-jz4740/jz4740_nand.h>
+
+#include <asm/mach-jz4740/board-n516.h>
+#include <asm/mach-jz4740/platform.h>
+
+#include "clock.h"
+
+static long n516_panic_blink(int state)
+{
+ gpio_set_value(GPIO_LED_ENABLE, state ? 1 : 0);
+ return 0;
+}
+
+static void __init board_gpio_setup(void)
+{
+/* jz_gpio_enable_pullup(JZ_GPIO_PORTD(23));
+ jz_gpio_enable_pullup(JZ_GPIO_PORTD(24));*/
+}
+
+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_udc_device,
+ &jz4740_i2c_device,
+ &n516_charger_device,
+};
+
+struct jz4740_clock_board_data jz4740_clock_bdata = {
+ .ext_rate = 12000000,
+ .rtc_rate = 32768,
+};
+
+static int n516_setup_platform(void)
+{
+ jz4740_serial_device_register();
+ 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);
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