Date:2010-04-24 17:25:23 (13 years 11 months ago)
Author:Lars C.
Commit:f40825a9742f2fe8096a79a3f506b91b9c4ef095
Message:Add n526 board support

Files: arch/mips/jz4740/Kconfig (1 diff)
arch/mips/jz4740/Makefile (1 diff)
arch/mips/jz4740/board-n526.c (1 diff)

Change Details

arch/mips/jz4740/Kconfig
1010    bool "Hanvon n516 eBook reader"
1111    select SOC_JZ4740
1212
13config JZ4740_N526
14    bool "Hanvon n526 eBook reader"
15    select SOC_JZ4740
16
1317endchoice
1418
1519config HAVE_PWM
arch/mips/jz4740/Makefile
1313
1414obj-$(CONFIG_JZ4740_QI_LB60) += board-qi_lb60.o
1515obj-$(CONFIG_JZ4740_N516) += board-n516.o board-n516-display.o
16obj-$(CONFIG_JZ4740_N526) += board-n526.o
1617
1718# PM support
1819
arch/mips/jz4740/board-n526.c
1/*
2 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
3 * N526 eBook reader support
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 * You should have received a copy of the GNU General Public License along
11 * with this program; if not, write to the Free Software Foundation, Inc.,
12 * 675 Mass Ave, Cambridge, MA 02139, USA.
13 *
14 */
15
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/gpio.h>
19
20#include <video/broadsheetfb.h>
21#include <linux/delay.h>
22#include <linux/interrupt.h>
23
24#include <linux/input.h>
25#include <linux/gpio_keys.h>
26
27#include <linux/i2c.h>
28
29#include "clock.h"
30
31#include <asm/mach-jz4740/jz4740_mmc.h>
32#include <asm/mach-jz4740/jz4740_nand.h>
33#include <asm/mach-jz4740/jz4740_fb.h>
34
35#include <asm/mach-jz4740/platform.h>
36
37/* NAND */
38static struct nand_ecclayout n526_ecclayout = {
39/* .eccbytes = 36,
40    .eccpos = {
41        6, 7, 8, 9, 10, 11, 12, 13,
42        14, 15, 16, 17, 18, 19, 20, 21,
43        22, 23, 24, 25, 26, 27, 28, 29,
44        30, 31, 32, 33, 34, 35, 36, 37,
45        38, 39, 40, 41},*/
46    .oobfree = {
47        {
48            .offset = 2,
49            .length = 4,
50        },
51        {
52            .offset = 42,
53            .length = 22,
54        },
55    }
56};
57
58static struct mtd_partition n526_partitions[] = {
59    { .name = "NAND BOOT partition",
60      .offset = 0 * 0x100000,
61      .size = 4 * 0x100000,
62     },
63    { .name = "NAND KERNEL partition",
64      .offset = 4 * 0x100000,
65      .size = 4 * 0x100000,
66     },
67    { .name = "NAND ROOTFS partition",
68      .offset = 16 * 0x100000,
69      .size = 498 * 0x100000,
70     },
71};
72
73static struct jz_nand_platform_data n526_nand_pdata = {
74    .ecc_layout = &n526_ecclayout,
75    .partitions = n526_partitions,
76    .num_partitions = ARRAY_SIZE(n526_partitions),
77    .busy_gpio = JZ_GPIO_PORTC(30),
78};
79
80static struct jz4740_mmc_platform_data n526_mmc_pdata = {
81    .gpio_card_detect = JZ_GPIO_PORTD(7),
82    .card_detect_active_low = 1,
83    .gpio_read_only = -1,
84    .gpio_power = JZ_GPIO_PORTD(17),
85    .power_active_low = 1,
86};
87
88static struct gpio_led n526_leds[] = {
89    {
90        .name = "n526:blue:power",
91        .gpio = JZ_GPIO_PORTD(28),
92        .default_state = LEDS_GPIO_DEFSTATE_ON,
93    }
94};
95
96static struct gpio_led_platform_data n526_leds_pdata = {
97    .leds = n526_leds,
98    .num_leds = ARRAY_SIZE(n526_leds),
99};
100
101static struct platform_device n526_leds_device = {
102    .name = "leds-gpio",
103    .id = -1,
104    .dev = {
105        .platform_data = &n526_leds_pdata,
106    },
107};
108
109static void __init board_gpio_setup(void)
110{
111    /* We only need to enable/disable pullup here for pins used in generic
112     * drivers. Everything else is done by the drivers themselfs. */
113    jz_gpio_disable_pullup(JZ_GPIO_PORTD(17));
114    jz_gpio_enable_pullup(JZ_GPIO_PORTD(7));
115    jz_gpio_disable_pullup(JZ_GPIO_PORTC(19));
116    jz_gpio_disable_pullup(JZ_GPIO_PORTC(20));
117    jz_gpio_disable_pullup(JZ_GPIO_PORTC(21));
118    jz_gpio_disable_pullup(JZ_GPIO_PORTC(23));
119}
120
121
122static const int n526_eink_ctrl_gpios[] = {
123    0,
124    JZ_GPIO_PORTC(23),
125    JZ_GPIO_PORTC(19),
126    JZ_GPIO_PORTC(20),
127};
128
129static void n526_eink_set_ctl(struct broadsheetfb_par * par, unsigned char ctrl, u8
130value)
131{
132    gpio_set_value(n526_eink_ctrl_gpios[ctrl], value);
133}
134
135
136static int n526_eink_wait(struct broadsheetfb_par *par)
137{
138    wait_event(par->waitq, gpio_get_value(JZ_GPIO_PORTB(17)));
139
140    return 0;
141}
142
143static u16 n526_eink_get_hdb(struct broadsheetfb_par *par)
144{
145    u16 value = 0;
146    jz_gpio_port_direction_input(JZ_GPIO_PORTC(0), 0xffff);
147    gpio_set_value(JZ_GPIO_PORTC(21), 0);
148    mdelay(100);
149
150    value = jz_gpio_port_get_value(JZ_GPIO_PORTC(0), 0xffff);
151
152    gpio_set_value(JZ_GPIO_PORTC(21), 1);
153    jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
154    return value;
155}
156
157static void n526_eink_set_hdb(struct broadsheetfb_par *par, u16 value)
158{
159    jz_gpio_port_set_value(JZ_GPIO_PORTC(0), value, 0xffff);
160}
161
162static int n526_eink_init(struct broadsheetfb_par *par)
163{
164    int i;
165
166    gpio_request(JZ_GPIO_PORTD(1), "display reset");
167    gpio_direction_output(JZ_GPIO_PORTD(1), 1);
168    mdelay(10);
169    gpio_set_value(JZ_GPIO_PORTD(1), 0);
170
171    gpio_request(JZ_GPIO_PORTB(18), "eink enable");
172    gpio_direction_output(JZ_GPIO_PORTB(18), 0);
173
174    gpio_request(JZ_GPIO_PORTB(29), "foobar");
175    gpio_direction_output(JZ_GPIO_PORTB(29), 1);
176
177    for(i = 1; i < ARRAY_SIZE(n526_eink_ctrl_gpios); ++i) {
178        gpio_request(n526_eink_ctrl_gpios[i], "eink display ctrl");
179        gpio_direction_output(n526_eink_ctrl_gpios[i], 0);
180    }
181
182    gpio_request(JZ_GPIO_PORTC(22), "foobar");
183    gpio_direction_input(JZ_GPIO_PORTC(22));
184    gpio_request(JZ_GPIO_PORTC(21), "eink nRD");
185    gpio_direction_output(JZ_GPIO_PORTC(21), 1);
186
187    for(i = 0; i < 16; ++i) {
188        gpio_request(JZ_GPIO_PORTC(i), "eink display data");
189    }
190    jz_gpio_port_direction_output(JZ_GPIO_PORTC(0), 0xffff);
191
192    gpio_set_value(JZ_GPIO_PORTB(18), 1);
193
194    return 0;
195}
196
197static irqreturn_t n526_eink_busy_irq(int irq, void *devid)
198{
199    struct broadsheetfb_par *par = devid;
200    wake_up(&par->waitq);
201
202    return IRQ_HANDLED;
203}
204
205static int n526_eink_setup_irq(struct fb_info *info)
206{
207    int ret;
208    struct broadsheetfb_par *par = info->par;
209
210    gpio_request(JZ_GPIO_PORTB(17), "eink busy");
211    gpio_direction_input(JZ_GPIO_PORTB(17));
212
213    ret = request_irq(gpio_to_irq(JZ_GPIO_PORTB(17)), n526_eink_busy_irq,
214                IRQF_DISABLED | IRQF_TRIGGER_RISING,
215                "eink busyline", par);
216    if (ret)
217        printk("n526 display: Failed to request busyline irq: %d\n", ret);
218    return 0;
219}
220
221static void n526_eink_cleanup(struct broadsheetfb_par *par)
222{
223}
224
225static struct broadsheet_board broadsheet_pdata = {
226    .owner = THIS_MODULE,
227    .init = n526_eink_init,
228    .wait_for_rdy = n526_eink_wait,
229    .set_ctl = n526_eink_set_ctl,
230    .set_hdb = n526_eink_set_hdb,
231    .get_hdb = n526_eink_get_hdb,
232    .cleanup = n526_eink_cleanup,
233    .setup_irq = n526_eink_setup_irq,
234};
235
236static struct platform_device n526_broadsheet_device = {
237    .name = "broadsheetfb",
238    .id = -1,
239    .dev = {
240        .platform_data = &broadsheet_pdata,
241    },
242};
243
244/* Buttons */
245static struct gpio_keys_button n526_gpio_keys_buttons[] = {
246    [0] = {
247        .code = KEY_ENTER,
248        .gpio = 0,
249        .active_low = 1,
250        .desc = "Power",
251    },
252};
253
254static struct gpio_keys_platform_data qi_lb60_gpio_keys_data = {
255    .nbuttons = ARRAY_SIZE(qi_lb60_gpio_keys_buttons),
256    .buttons = qi_lb60_gpio_keys_buttons,
257};
258
259static struct platform_device n526_gpio_keys_device = {
260    .name = "gpio-keys",
261    .id = -1,
262    .dev = {
263        .platform_data = &n526_gpio_keys_data,
264    }
265};
266
267static struct i2c_board_info n526_i2c_board_info = {
268    .type = "n526-lpc",
269    .addr = 0x54,
270};
271
272static struct platform_device *n526_platform_devices[] __initdata = {
273    &jz4740_usb_ohci_device,
274    &jz4740_udc_device,
275    &jz4740_mmc_device,
276    &jz4740_nand_device,
277    &jz4740_i2s_device,
278    &jz4740_codec_device,
279    &jz4740_pcm_device,
280    &jz4740_rtc_device,
281    &jz4740_i2c_device,
282    &n526_leds_device,
283    &n526_broadsheet_device,
284    &n526_gpio_keys_device,
285};
286
287static int __init n526_init_platform_devices(void)
288{
289    jz4740_nand_device.dev.platform_data = &n526_nand_pdata;
290    jz4740_mmc_device.dev.platform_data = &n526_mmc_pdata;
291
292    jz4740_serial_device_register();
293
294    n526_i2c_board_info.irq = gpio_to_irq(JZ_GPIO_PORTD(14)),
295    i2c_register_board_info(0, &n526_i2c_board_info, 1);
296
297    return platform_add_devices(n526_platform_devices,
298                    ARRAY_SIZE(n526_platform_devices));
299
300}
301
302struct jz4740_clock_board_data jz4740_clock_bdata = {
303    .ext_rate = 12000000,
304    .rtc_rate = 32768,
305};
306
307static int __init n526_board_setup(void)
308{
309    board_gpio_setup();
310
311    if (n526_init_platform_devices())
312        panic("Failed to initalize platform devices\n");
313
314    return 0;
315}
316arch_initcall(n526_board_setup);

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