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359 lines
8.8 KiB
Diff
359 lines
8.8 KiB
Diff
From 5739f1348052000ed12a7745f7bafd352fff832a Mon Sep 17 00:00:00 2001
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From: Lars-Peter Clausen <lars@metafoo.de>
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Date: Sat, 24 Apr 2010 17:25:23 +0200
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Subject: [PATCH 07/23] Add n526 board support
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---
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arch/mips/jz4740/Kconfig | 4 +
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arch/mips/jz4740/Makefile | 1 +
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arch/mips/jz4740/board-n526.c | 318 +++++++++++++++++++++++++++++++++++++++++
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3 files changed, 323 insertions(+), 0 deletions(-)
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create mode 100644 arch/mips/jz4740/board-n526.c
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--- a/arch/mips/jz4740/Kconfig
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+++ b/arch/mips/jz4740/Kconfig
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@@ -10,6 +10,10 @@ config JZ4740_N516
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bool "Hanvon n516 eBook reader"
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select SOC_JZ4740
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+config JZ4740_N526
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+ bool "Hanvon n526 eBook reader"
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+ select SOC_JZ4740
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+
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endchoice
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config HAVE_PWM
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--- a/arch/mips/jz4740/Makefile
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+++ b/arch/mips/jz4740/Makefile
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@@ -13,6 +13,7 @@ obj-$(CONFIG_DEBUG_FS) += clock-debugfs.
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obj-$(CONFIG_JZ4740_QI_LB60) += board-qi_lb60.o
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obj-$(CONFIG_JZ4740_N516) += board-n516.o board-n516-display.o
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+obj-$(CONFIG_JZ4740_N526) += board-n526.o
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# PM support
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--- /dev/null
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+++ b/arch/mips/jz4740/board-n526.c
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@@ -0,0 +1,320 @@
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+/*
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+ * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
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+ * N526 eBook reader support
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ *
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 675 Mass Ave, Cambridge, MA 02139, USA.
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+ *
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/init.h>
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+#include <linux/gpio.h>
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+
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+#include <linux/mutex.h>
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+#include <linux/wait.h>
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+#include <video/broadsheetfb.h>
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+#include <linux/delay.h>
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+#include <linux/interrupt.h>
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+
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+#include <linux/input.h>
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+#include <linux/gpio_keys.h>
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+
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+#include <linux/leds.h>
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+
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+#include <linux/i2c.h>
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+
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+#include "clock.h"
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+
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+#include <asm/mach-jz4740/jz4740_mmc.h>
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+#include <asm/mach-jz4740/jz4740_nand.h>
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+#include <asm/mach-jz4740/jz4740_fb.h>
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+
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+#include <asm/mach-jz4740/platform.h>
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+
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+/* NAND */
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+static struct nand_ecclayout n526_ecclayout = {
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+ .eccbytes = 36,
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+ .eccpos = {
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+ 6, 7, 8, 9, 10, 11, 12, 13,
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+ 14, 15, 16, 17, 18, 19, 20, 21,
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+ 22, 23, 24, 25, 26, 27, 28, 29,
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+ 30, 31, 32, 33, 34, 35, 36, 37,
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+ 38, 39, 40, 41},
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+ .oobfree = {
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+ {
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+ .offset = 2,
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+ .length = 4,
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+ },
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+ {
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+ .offset = 42,
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+ .length = 22,
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+ },
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+ }
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+};
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+
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+static struct mtd_partition n526_partitions[] = {
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+ { .name = "NAND BOOT partition",
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+ .offset = 0 * 0x100000,
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+ .size = 4 * 0x100000,
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+ },
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+ { .name = "NAND KERNEL partition",
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+ .offset = 4 * 0x100000,
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+ .size = 4 * 0x100000,
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+ },
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+ { .name = "NAND ROOTFS partition",
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+ .offset = 16 * 0x100000,
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+ .size = 498 * 0x100000,
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+ },
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+};
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+
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+static struct jz_nand_platform_data n526_nand_pdata = {
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+ .ecc_layout = &n526_ecclayout,
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+ .partitions = n526_partitions,
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+ .num_partitions = ARRAY_SIZE(n526_partitions),
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+ .busy_gpio = JZ_GPIO_PORTC(30),
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+};
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+
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+static struct jz4740_mmc_platform_data n526_mmc_pdata = {
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+ .gpio_card_detect = JZ_GPIO_PORTD(7),
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+ .card_detect_active_low = 1,
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+ .gpio_read_only = -1,
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+ .gpio_power = JZ_GPIO_PORTD(17),
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+ .power_active_low = 1,
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+};
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+
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+static struct gpio_led n526_leds[] = {
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+ {
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+ .name = "n526:blue:power",
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+ .gpio = JZ_GPIO_PORTD(28),
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+ .default_state = LEDS_GPIO_DEFSTATE_ON,
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+ }
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+};
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+
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+static struct gpio_led_platform_data n526_leds_pdata = {
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+ .leds = n526_leds,
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+ .num_leds = ARRAY_SIZE(n526_leds),
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+};
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+
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+static struct platform_device n526_leds_device = {
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+ .name = "leds-gpio",
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+ .id = -1,
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+ .dev = {
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+ .platform_data = &n526_leds_pdata,
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+ },
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+};
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+
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+static void __init board_gpio_setup(void)
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+{
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+ /* We only need to enable/disable pullup here for pins used in generic
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+ * drivers. Everything else is done by the drivers themselfs. */
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+ jz_gpio_disable_pullup(JZ_GPIO_PORTD(17));
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+ jz_gpio_enable_pullup(JZ_GPIO_PORTD(7));
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+ jz_gpio_disable_pullup(JZ_GPIO_PORTC(19));
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+ jz_gpio_disable_pullup(JZ_GPIO_PORTC(20));
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+ jz_gpio_disable_pullup(JZ_GPIO_PORTC(21));
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+ jz_gpio_disable_pullup(JZ_GPIO_PORTC(23));
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+}
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+
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+
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+static const int n526_eink_ctrl_gpios[] = {
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+ 0,
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+ JZ_GPIO_PORTC(23),
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+ JZ_GPIO_PORTC(19),
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+ JZ_GPIO_PORTC(20),
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+};
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+
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+static void n526_eink_set_ctl(struct broadsheetfb_par * par, unsigned char ctrl, u8
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+value)
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+{
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+ gpio_set_value(n526_eink_ctrl_gpios[ctrl], value);
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+}
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+
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+
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+static int n526_eink_wait(struct broadsheetfb_par *par)
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+{
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+ wait_event(par->waitq, gpio_get_value(JZ_GPIO_PORTB(17)));
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+
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+ return 0;
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+}
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+
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+static u16 n526_eink_get_hdb(struct broadsheetfb_par *par)
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+{
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+ u16 value = 0;
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+ jz_gpio_port_direction_input(JZ_GPIO_PORTC(0), 0xffff);
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+ gpio_set_value(JZ_GPIO_PORTC(21), 0);
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+ mdelay(100);
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+
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+ value = jz_gpio_port_get_value(JZ_GPIO_PORTC(0), 0xffff);
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+
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+ gpio_set_value(JZ_GPIO_PORTC(21), 1);
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+ jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
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+ return value;
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+}
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+
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+static void n526_eink_set_hdb(struct broadsheetfb_par *par, u16 value)
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+{
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+ jz_gpio_port_set_value(JZ_GPIO_PORTC(0), value, 0xffff);
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+}
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+
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+static int n526_eink_init(struct broadsheetfb_par *par)
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+{
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+ int i;
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+
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+ gpio_request(JZ_GPIO_PORTD(1), "display reset");
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+ gpio_direction_output(JZ_GPIO_PORTD(1), 1);
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+ mdelay(10);
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+ gpio_set_value(JZ_GPIO_PORTD(1), 0);
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+
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+ gpio_request(JZ_GPIO_PORTB(18), "eink enable");
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+ gpio_direction_output(JZ_GPIO_PORTB(18), 0);
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+
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+ gpio_request(JZ_GPIO_PORTB(29), "foobar");
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+ gpio_direction_output(JZ_GPIO_PORTB(29), 1);
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+
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+ for(i = 1; i < ARRAY_SIZE(n526_eink_ctrl_gpios); ++i) {
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+ gpio_request(n526_eink_ctrl_gpios[i], "eink display ctrl");
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+ gpio_direction_output(n526_eink_ctrl_gpios[i], 0);
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+ }
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+
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+ gpio_request(JZ_GPIO_PORTC(22), "foobar");
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+ gpio_direction_input(JZ_GPIO_PORTC(22));
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+ gpio_request(JZ_GPIO_PORTC(21), "eink nRD");
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+ gpio_direction_output(JZ_GPIO_PORTC(21), 1);
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+
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+ for(i = 0; i < 16; ++i) {
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+ gpio_request(JZ_GPIO_PORTC(i), "eink display data");
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+ }
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+ jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
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+
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+ gpio_set_value(JZ_GPIO_PORTB(18), 1);
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+
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+ return 0;
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+}
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+
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+static irqreturn_t n526_eink_busy_irq(int irq, void *devid)
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+{
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+ struct broadsheetfb_par *par = devid;
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+ wake_up(&par->waitq);
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+
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+ return IRQ_HANDLED;
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+}
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+
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+static int n526_eink_setup_irq(struct fb_info *info)
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+{
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+ int ret;
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+ struct broadsheetfb_par *par = info->par;
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+
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+ gpio_request(JZ_GPIO_PORTB(17), "eink busy");
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+ gpio_direction_input(JZ_GPIO_PORTB(17));
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+
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+ ret = request_irq(gpio_to_irq(JZ_GPIO_PORTB(17)), n526_eink_busy_irq,
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+ IRQF_DISABLED | IRQF_TRIGGER_RISING,
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+ "eink busyline", par);
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+ if (ret)
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+ printk("n526 display: Failed to request busyline irq: %d\n", ret);
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+ return 0;
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+}
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+
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+static void n526_eink_cleanup(struct broadsheetfb_par *par)
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+{
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+}
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+
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+static struct broadsheet_board broadsheet_pdata = {
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+ .owner = THIS_MODULE,
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+ .init = n526_eink_init,
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+ .wait_for_rdy = n526_eink_wait,
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+ .set_ctl = n526_eink_set_ctl,
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+ .set_hdb = n526_eink_set_hdb,
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+ .get_hdb = n526_eink_get_hdb,
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+ .cleanup = n526_eink_cleanup,
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+ .setup_irq = n526_eink_setup_irq,
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+};
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+
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+static struct platform_device n526_broadsheet_device = {
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+ .name = "broadsheetfb",
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+ .id = -1,
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+ .dev = {
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+ .platform_data = &broadsheet_pdata,
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+ },
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+};
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+
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+/* Buttons */
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+static struct gpio_keys_button n526_gpio_keys_buttons[] = {
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+ [0] = {
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+ .code = KEY_ENTER,
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+ .gpio = 0,
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+ .active_low = 1,
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+ .desc = "Power",
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+ },
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+};
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+
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+static struct gpio_keys_platform_data n526_gpio_keys_data = {
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+ .nbuttons = ARRAY_SIZE(n526_gpio_keys_buttons),
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+ .buttons = n526_gpio_keys_buttons,
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+};
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+
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+static struct platform_device n526_gpio_keys_device = {
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+ .name = "gpio-keys",
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+ .id = -1,
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+ .dev = {
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+ .platform_data = &n526_gpio_keys_data,
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+ }
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+};
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+
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+static struct i2c_board_info n526_i2c_board_info = {
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+ .type = "n526-lpc",
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+ .addr = 0x54,
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+};
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+
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+static struct platform_device *n526_platform_devices[] __initdata = {
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+ &jz4740_usb_ohci_device,
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+ &jz4740_udc_device,
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+ &jz4740_mmc_device,
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+ &jz4740_nand_device,
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+ &jz4740_i2s_device,
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+ &jz4740_codec_device,
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+ &jz4740_pcm_device,
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+ &jz4740_rtc_device,
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+ &jz4740_i2c_device,
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+ &n526_leds_device,
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+ &n526_broadsheet_device,
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+ &n526_gpio_keys_device,
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+};
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+
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+static int __init n526_init_platform_devices(void)
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+{
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+ jz4740_nand_device.dev.platform_data = &n526_nand_pdata;
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+ jz4740_mmc_device.dev.platform_data = &n526_mmc_pdata;
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+
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+ jz4740_serial_device_register();
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+
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+ n526_i2c_board_info.irq = gpio_to_irq(JZ_GPIO_PORTD(14)),
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+ i2c_register_board_info(0, &n526_i2c_board_info, 1);
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+
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+ return platform_add_devices(n526_platform_devices,
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+ ARRAY_SIZE(n526_platform_devices));
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+
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+}
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+
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+struct jz4740_clock_board_data jz4740_clock_bdata = {
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+ .ext_rate = 12000000,
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+ .rtc_rate = 32768,
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+};
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+
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+static int __init n526_board_setup(void)
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+{
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+ board_gpio_setup();
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+
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+ if (n526_init_platform_devices())
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+ panic("Failed to initalize platform devices\n");
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+
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+ return 0;
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+}
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+arch_initcall(n526_board_setup);
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