[linux.git] / arch / arm / mach-pxa / am200epd.c

/*
 * am200epd.c -- Platform device for AM200 EPD kit
 *
 * Copyright (C) 2008, 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.
 *
 * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
 *
 * This work was made possible by help and equipment support from E-Ink
 * Corporation. http://support.eink.com/community
 *
 * This driver is written to be used with the Metronome display controller.
 * on the AM200 EPD prototype kit/development kit with an E-Ink 800x600
 * Vizplex EPD on a Gumstix board using the Lyre interface board.
 *
 */

#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 <mach/pxa25x.h>
#include <mach/gumstix.h>
#include <linux/platform_data/video-pxafb.h>

#include "generic.h"

#include <video/metronomefb.h>

static unsigned int panel_type = 6;
static struct platform_device *am200_device;
static struct metronome_board am200_board;

static struct pxafb_mode_info am200_fb_mode_9inch7 = {
	.pixclock	= 40000,
	.xres		= 1200,
	.yres		= 842,
	.bpp		= 16,
	.hsync_len	= 2,
	.left_margin	= 2,
	.right_margin	= 2,
	.vsync_len	= 1,
	.upper_margin	= 2,
	.lower_margin	= 25,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mode_info am200_fb_mode_8inch = {
	.pixclock	= 40000,
	.xres		= 1088,
	.yres		= 791,
	.bpp		= 16,
	.hsync_len	= 28,
	.left_margin	= 8,
	.right_margin	= 30,
	.vsync_len	= 8,
	.upper_margin	= 10,
	.lower_margin	= 8,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mode_info am200_fb_mode_6inch = {
	.pixclock	= 40189,
	.xres		= 832,
	.yres		= 622,
	.bpp		= 16,
	.hsync_len	= 28,
	.left_margin	= 34,
	.right_margin	= 34,
	.vsync_len	= 25,
	.upper_margin	= 0,
	.lower_margin	= 2,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info am200_fb_info = {
	.modes		= &am200_fb_mode_6inch,
	.num_modes	= 1,
	.lcd_conn	= LCD_TYPE_COLOR_TFT | LCD_PCLK_EDGE_FALL |
			  LCD_AC_BIAS_FREQ(24),
};

/* register offsets for gpio control */
#define LED_GPIO_PIN 51
#define STDBY_GPIO_PIN 48
#define RST_GPIO_PIN 49
#define RDY_GPIO_PIN 32
#define ERR_GPIO_PIN 17
#define PCBPWR_GPIO_PIN 16
static int gpios[] = { LED_GPIO_PIN , STDBY_GPIO_PIN , RST_GPIO_PIN,
			RDY_GPIO_PIN, ERR_GPIO_PIN, PCBPWR_GPIO_PIN };
static char *gpio_names[] = { "LED" , "STDBY" , "RST", "RDY", "ERR", "PCBPWR" };

static int am200_init_gpio_regs(struct metronomefb_par *par)
{
	int i;
	int err;

	for (i = 0; i < ARRAY_SIZE(gpios); i++) {
		err = gpio_request(gpios[i], gpio_names[i]);
		if (err) {
			dev_err(&am200_device->dev, "failed requesting "
				"gpio %s, err=%d\n", gpio_names[i], err);
			goto err_req_gpio;
		}
	}

	gpio_direction_output(LED_GPIO_PIN, 0);
	gpio_direction_output(STDBY_GPIO_PIN, 0);
	gpio_direction_output(RST_GPIO_PIN, 0);

	gpio_direction_input(RDY_GPIO_PIN);
	gpio_direction_input(ERR_GPIO_PIN);

	gpio_direction_output(PCBPWR_GPIO_PIN, 0);

	return 0;

err_req_gpio:
	while (--i >= 0)
		gpio_free(gpios[i]);

	return err;
}

static void am200_cleanup(struct metronomefb_par *par)
{
	int i;

	free_irq(PXA_GPIO_TO_IRQ(RDY_GPIO_PIN), par);

	for (i = 0; i < ARRAY_SIZE(gpios); i++)
		gpio_free(gpios[i]);
}

static int am200_share_video_mem(struct fb_info *info)
{
	/* rough check if this is our desired fb and not something else */
	if ((info->var.xres != am200_fb_info.modes->xres)
		|| (info->var.yres != am200_fb_info.modes->yres))
		return 0;

	/* we've now been notified that we have our new fb */
	am200_board.metromem = info->screen_base;
	am200_board.host_fbinfo = info;

	/* try to refcount host drv since we are the consumer after this */
	if (!try_module_get(info->fbops->owner))
		return -ENODEV;

	return 0;
}

static int am200_unshare_video_mem(struct fb_info *info)
{
	dev_dbg(&am200_device->dev, "ENTER %s\n", __func__);

	if (info != am200_board.host_fbinfo)
		return 0;

	module_put(am200_board.host_fbinfo->fbops->owner);
	return 0;
}

static int am200_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(&am200_device->dev, "ENTER %s\n", __func__);

	if (event == FB_EVENT_FB_REGISTERED)
		return am200_share_video_mem(info);
	else if (event == FB_EVENT_FB_UNREGISTERED)
		return am200_unshare_video_mem(info);

	return 0;
}

static struct notifier_block am200_fb_notif = {
	.notifier_call = am200_fb_notifier_callback,
};

/* this gets called as part of our init. these steps must be done now so
 * that we can use pxa_set_fb_info */
static void __init am200_presetup_fb(void)
{
	int fw;
	int fh;
	int padding_size;
	int totalsize;

	switch (panel_type) {
	case 6:
		am200_fb_info.modes = &am200_fb_mode_6inch;
		break;
	case 8:
		am200_fb_info.modes = &am200_fb_mode_8inch;
		break;
	case 97:
		am200_fb_info.modes = &am200_fb_mode_9inch7;
		break;
	default:
		dev_err(&am200_device->dev, "invalid panel_type selection,"
						" setting to 6\n");
		am200_fb_info.modes = &am200_fb_mode_6inch;
		break;
	}

	/* the frame buffer is divided as follows:
	command | CRC | padding
	16kb waveform data | CRC | padding
	image data | CRC
	*/

	fw = am200_fb_info.modes->xres;
	fh = am200_fb_info.modes->yres;

	/* waveform must be 16k + 2 for checksum */
	am200_board.wfm_size = roundup(16*1024 + 2, fw);

	padding_size = PAGE_SIZE + (4 * fw);

	/* total is 1 cmd , 1 wfm, padding and image */
	totalsize = fw + am200_board.wfm_size + padding_size + (fw*fh);

	/* save this off because we're manipulating fw after this and
	 * we'll need it when we're ready to setup the framebuffer */
	am200_board.fw = fw;
	am200_board.fh = fh;

	/* the reason we do this adjustment is because we want to acquire
	 * more framebuffer memory without imposing custom awareness on the
	 * underlying pxafb driver */
	am200_fb_info.modes->yres = DIV_ROUND_UP(totalsize, fw);

	/* we divide since we told the LCD controller we're 16bpp */
	am200_fb_info.modes->xres /= 2;

	pxa_set_fb_info(NULL, &am200_fb_info);

}

/* 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 am200_setup_fb(struct metronomefb_par *par)
{
	int fw;
	int fh;

	fw = am200_board.fw;
	fh = am200_board.fh;

	/* 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 *) am200_board.metromem;
	par->metromem_wfm = am200_board.metromem + fw;
	par->metromem_img = par->metromem_wfm + am200_board.wfm_size;
	par->metromem_img_csum = (u16 *) (par->metromem_img + (fw * fh));
	par->metromem_dma = am200_board.host_fbinfo->fix.smem_start;

	return 0;
}

static int am200_get_panel_type(void)
{
	return panel_type;
}

static irqreturn_t am200_handle_irq(int irq, void *dev_id)
{
	struct metronomefb_par *par = dev_id;

	wake_up_interruptible(&par->waitq);
	return IRQ_HANDLED;
}

static int am200_setup_irq(struct fb_info *info)
{
	int ret;

	ret = request_irq(PXA_GPIO_TO_IRQ(RDY_GPIO_PIN), am200_handle_irq,
				IRQF_DISABLED|IRQF_TRIGGER_FALLING,
				"AM200", info->par);
	if (ret)
		dev_err(&am200_device->dev, "request_irq failed: %d\n", ret);

	return ret;
}

static void am200_set_rst(struct metronomefb_par *par, int state)
{
	gpio_set_value(RST_GPIO_PIN, state);
}

static void am200_set_stdby(struct metronomefb_par *par, int state)
{
	gpio_set_value(STDBY_GPIO_PIN, state);
}

static int am200_wait_event(struct metronomefb_par *par)
{
	return wait_event_timeout(par->waitq, gpio_get_value(RDY_GPIO_PIN), HZ);
}

static int am200_wait_event_intr(struct metronomefb_par *par)
{
	return wait_event_interruptible_timeout(par->waitq,
					gpio_get_value(RDY_GPIO_PIN), HZ);
}

static struct metronome_board am200_board = {
	.owner			= THIS_MODULE,
	.setup_irq		= am200_setup_irq,
	.setup_io		= am200_init_gpio_regs,
	.setup_fb		= am200_setup_fb,
	.set_rst		= am200_set_rst,
	.set_stdby		= am200_set_stdby,
	.met_wait_event		= am200_wait_event,
	.met_wait_event_intr	= am200_wait_event_intr,
	.get_panel_type		= am200_get_panel_type,
	.cleanup		= am200_cleanup,
};

static unsigned long am200_pin_config[] __initdata = {
	GPIO51_GPIO,
	GPIO49_GPIO,
	GPIO48_GPIO,
	GPIO32_GPIO,
	GPIO17_GPIO,
	GPIO16_GPIO,
};

int __init am200_init(void)
{
	int ret;

	/* before anything else, we request notification for any fb
	 * creation events */
	fb_register_client(&am200_fb_notif);

	pxa2xx_mfp_config(ARRAY_AND_SIZE(am200_pin_config));

	/* request our platform independent driver */
	request_module("metronomefb");

	am200_device = platform_device_alloc("metronomefb", -1);
	if (!am200_device)
		return -ENOMEM;

	/* the am200_board that will be seen by metronomefb is a copy */
	platform_device_add_data(am200_device, &am200_board,
					sizeof(am200_board));

	/* this _add binds metronomefb to am200. metronomefb refcounts am200 */
	ret = platform_device_add(am200_device);

	if (ret) {
		platform_device_put(am200_device);
		fb_unregister_client(&am200_fb_notif);
		return ret;
	}

	am200_presetup_fb();

	return 0;
}

module_param(panel_type, uint, 0);
MODULE_PARM_DESC(panel_type, "Select the panel type: 6, 8, 97");

MODULE_DESCRIPTION("board driver for am200 metronome epd kit");
MODULE_AUTHOR("Jaya Kumar");
MODULE_LICENSE("GPL");
Commit	Line	Data
92261343 JK	1	/*
	2	* am200epd.c -- Platform device for AM200 EPD kit
	3	*
	4	* Copyright (C) 2008, Jaya Kumar
	5	*
	6	* This file is subject to the terms and conditions of the GNU General Public
	7	* License. See the file COPYING in the main directory of this archive for
	8	* more details.
	9	*
	10	* Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
	11	*
	12	* This work was made possible by help and equipment support from E-Ink
	13	* Corporation. http://support.eink.com/community
	14	*
	15	* This driver is written to be used with the Metronome display controller.
	16	* on the AM200 EPD prototype kit/development kit with an E-Ink 800x600
	17	* Vizplex EPD on a Gumstix board using the Lyre interface board.
	18	*
	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/kernel.h>
	23	#include <linux/errno.h>
	24	#include <linux/string.h>
	25	#include <linux/delay.h>
	26	#include <linux/interrupt.h>
	27	#include <linux/fb.h>
	28	#include <linux/init.h>
	29	#include <linux/platform_device.h>
	30	#include <linux/irq.h>
	31	#include <linux/gpio.h>
	32
51c62982	33	#include <mach/pxa25x.h>
854feaed	34	#include <mach/gumstix.h>
293b2da1	35	#include <linux/platform_data/video-pxafb.h>
92261343	36
854feaed JK	37	#include "generic.h"
854feaed JK	38
92261343 JK	39	#include <video/metronomefb.h>
	40
	41	static unsigned int panel_type = 6;
	42	static struct platform_device *am200_device;
	43	static struct metronome_board am200_board;
	44
	45	static struct pxafb_mode_info am200_fb_mode_9inch7 = {
	46	.pixclock = 40000,
	47	.xres = 1200,
	48	.yres = 842,
	49	.bpp = 16,
	50	.hsync_len = 2,
	51	.left_margin = 2,
	52	.right_margin = 2,
	53	.vsync_len = 1,
	54	.upper_margin = 2,
	55	.lower_margin = 25,
	56	.sync = FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	57	};
	58
	59	static struct pxafb_mode_info am200_fb_mode_8inch = {
	60	.pixclock = 40000,
	61	.xres = 1088,
	62	.yres = 791,
	63	.bpp = 16,
	64	.hsync_len = 28,
	65	.left_margin = 8,
	66	.right_margin = 30,
	67	.vsync_len = 8,
	68	.upper_margin = 10,
	69	.lower_margin = 8,
	70	.sync = FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	71	};
	72
	73	static struct pxafb_mode_info am200_fb_mode_6inch = {
	74	.pixclock = 40189,
	75	.xres = 832,
	76	.yres = 622,
	77	.bpp = 16,
	78	.hsync_len = 28,
	79	.left_margin = 34,
	80	.right_margin = 34,
	81	.vsync_len = 25,
	82	.upper_margin = 0,
	83	.lower_margin = 2,
	84	.sync = FB_SYNC_HOR_HIGH_ACT \| FB_SYNC_VERT_HIGH_ACT,
	85	};
	86
	87	static struct pxafb_mach_info am200_fb_info = {
	88	.modes = &am200_fb_mode_6inch,
	89	.num_modes = 1,
	90	.lcd_conn = LCD_TYPE_COLOR_TFT \| LCD_PCLK_EDGE_FALL \|
	91	LCD_AC_BIAS_FREQ(24),
	92	};
	93
	94	/* register offsets for gpio control */
	95	#define LED_GPIO_PIN 51
	96	#define STDBY_GPIO_PIN 48
	97	#define RST_GPIO_PIN 49
	98	#define RDY_GPIO_PIN 32
	99	#define ERR_GPIO_PIN 17
	100	#define PCBPWR_GPIO_PIN 16
	101	static int gpios[] = { LED_GPIO_PIN , STDBY_GPIO_PIN , RST_GPIO_PIN,
	102	RDY_GPIO_PIN, ERR_GPIO_PIN, PCBPWR_GPIO_PIN };
103	static char *gpio_names[] = { "LED" , "STDBY" , "RST", "RDY", "ERR", "PCBPWR" };
104
105	static int am200_init_gpio_regs(struct metronomefb_par *par)
106	{
107	int i;
108	int err;
109
110	for (i = 0; i < ARRAY_SIZE(gpios); i++) {
111	err = gpio_request(gpios[i], gpio_names[i]);
112	if (err) {
113	dev_err(&am200_device->dev, "failed requesting "
114	"gpio %s, err=%d\n", gpio_names[i], err);
115	goto err_req_gpio;
116	}
117	}
118
119	gpio_direction_output(LED_GPIO_PIN, 0);
120	gpio_direction_output(STDBY_GPIO_PIN, 0);
121	gpio_direction_output(RST_GPIO_PIN, 0);
122
123	gpio_direction_input(RDY_GPIO_PIN);
124	gpio_direction_input(ERR_GPIO_PIN);
125
126	gpio_direction_output(PCBPWR_GPIO_PIN, 0);
127
128	return 0;
129
130	err_req_gpio:
8aad172e AL	131	while (--i >= 0)
8aad172e AL	132	gpio_free(gpios[i]);
92261343 JK	133
	134	return err;
	135	}
	136
	137	static void am200_cleanup(struct metronomefb_par *par)
	138	{
	139	int i;
	140
6384fdad	141	free_irq(PXA_GPIO_TO_IRQ(RDY_GPIO_PIN), par);
92261343 JK	142
	143	for (i = 0; i < ARRAY_SIZE(gpios); i++)
	144	gpio_free(gpios[i]);
	145	}
	146
	147	static int am200_share_video_mem(struct fb_info *info)
	148	{
	149	/* rough check if this is our desired fb and not something else */
	150	if ((info->var.xres != am200_fb_info.modes->xres)
	151	\|\| (info->var.yres != am200_fb_info.modes->yres))
	152	return 0;
	153
	154	/* we've now been notified that we have our new fb */
	155	am200_board.metromem = info->screen_base;
	156	am200_board.host_fbinfo = info;
	157
	158	/* try to refcount host drv since we are the consumer after this */
	159	if (!try_module_get(info->fbops->owner))
	160	return -ENODEV;
	161
	162	return 0;
	163	}
	164
	165	static int am200_unshare_video_mem(struct fb_info *info)
	166	{
	167	dev_dbg(&am200_device->dev, "ENTER %s\n", __func__);
	168
	169	if (info != am200_board.host_fbinfo)
	170	return 0;
	171
	172	module_put(am200_board.host_fbinfo->fbops->owner);
	173	return 0;
	174	}
	175
	176	static int am200_fb_notifier_callback(struct notifier_block *self,
	177	unsigned long event, void *data)
	178	{
	179	struct fb_event *evdata = data;
	180	struct fb_info *info = evdata->info;
	181
	182	dev_dbg(&am200_device->dev, "ENTER %s\n", __func__);
	183
	184	if (event == FB_EVENT_FB_REGISTERED)
	185	return am200_share_video_mem(info);
	186	else if (event == FB_EVENT_FB_UNREGISTERED)
	187	return am200_unshare_video_mem(info);
	188
	189	return 0;
	190	}
	191
	192	static struct notifier_block am200_fb_notif = {
	193	.notifier_call = am200_fb_notifier_callback,
	194	};
	195
	196	/* this gets called as part of our init. these steps must be done now so
4321e1a1	197	* that we can use pxa_set_fb_info */
92261343 JK	198	static void __init am200_presetup_fb(void)
	199	{
	200	int fw;
	201	int fh;
	202	int padding_size;
	203	int totalsize;
	204
	205	switch (panel_type) {
	206	case 6:
	207	am200_fb_info.modes = &am200_fb_mode_6inch;
	208	break;
	209	case 8:
	210	am200_fb_info.modes = &am200_fb_mode_8inch;
	211	break;
	212	case 97:
	213	am200_fb_info.modes = &am200_fb_mode_9inch7;
	214	break;
	215	default:
	216	dev_err(&am200_device->dev, "invalid panel_type selection,"
	217	" setting to 6\n");
	218	am200_fb_info.modes = &am200_fb_mode_6inch;
	219	break;
	220	}
	221
	222	/* the frame buffer is divided as follows:
	223	command \| CRC \| padding
	224	16kb waveform data \| CRC \| padding
	225	image data \| CRC
	226	*/
	227
	228	fw = am200_fb_info.modes->xres;
	229	fh = am200_fb_info.modes->yres;
	230
	231	/* waveform must be 16k + 2 for checksum */
	232	am200_board.wfm_size = roundup(16*1024 + 2, fw);
	233
	234	padding_size = PAGE_SIZE + (4 * fw);
	235
	236	/* total is 1 cmd , 1 wfm, padding and image */
	237	totalsize = fw + am200_board.wfm_size + padding_size + (fw*fh);
	238
	239	/* save this off because we're manipulating fw after this and
	240	* we'll need it when we're ready to setup the framebuffer */
	241	am200_board.fw = fw;
	242	am200_board.fh = fh;
	243
	244	/* the reason we do this adjustment is because we want to acquire
	245	* more framebuffer memory without imposing custom awareness on the
	246	* underlying pxafb driver */
	247	am200_fb_info.modes->yres = DIV_ROUND_UP(totalsize, fw);
	248
	249	/* we divide since we told the LCD controller we're 16bpp */
	250	am200_fb_info.modes->xres /= 2;
	251
4321e1a1	252	pxa_set_fb_info(NULL, &am200_fb_info);
92261343 JK	253
	254	}
	255
	256	/* this gets called by metronomefb as part of its init, in our case, we
	257	* have already completed initial framebuffer init in presetup_fb so we
	258	* can just setup the fb access pointers */
	259	static int am200_setup_fb(struct metronomefb_par *par)
	260	{
	261	int fw;
	262	int fh;
	263
	264	fw = am200_board.fw;
	265	fh = am200_board.fh;
	266
	267	/* metromem was set up by the notifier in share_video_mem so now
	268	* we can use its value to calculate the other entries */
	269	par->metromem_cmd = (struct metromem_cmd *) am200_board.metromem;
	270	par->metromem_wfm = am200_board.metromem + fw;
	271	par->metromem_img = par->metromem_wfm + am200_board.wfm_size;
	272	par->metromem_img_csum = (u16 ) (par->metromem_img + (fw fh));
	273	par->metromem_dma = am200_board.host_fbinfo->fix.smem_start;
	274
	275	return 0;
	276	}
	277
	278	static int am200_get_panel_type(void)
	279	{
	280	return panel_type;
	281	}
	282
	283	static irqreturn_t am200_handle_irq(int irq, void *dev_id)
	284	{
	285	struct metronomefb_par *par = dev_id;
	286
	287	wake_up_interruptible(&par->waitq);
	288	return IRQ_HANDLED;
	289	}
	290
	291	static int am200_setup_irq(struct fb_info *info)
	292	{
	293	int ret;
	294
6384fdad	295	ret = request_irq(PXA_GPIO_TO_IRQ(RDY_GPIO_PIN), am200_handle_irq,
92261343 JK	296	IRQF_DISABLED\|IRQF_TRIGGER_FALLING,
	297	"AM200", info->par);
	298	if (ret)
	299	dev_err(&am200_device->dev, "request_irq failed: %d\n", ret);
	300
	301	return ret;
	302	}
	303
	304	static void am200_set_rst(struct metronomefb_par *par, int state)
	305	{
	306	gpio_set_value(RST_GPIO_PIN, state);
	307	}
	308
	309	static void am200_set_stdby(struct metronomefb_par *par, int state)
	310	{
	311	gpio_set_value(STDBY_GPIO_PIN, state);
	312	}
	313
	314	static int am200_wait_event(struct metronomefb_par *par)
	315	{
	316	return wait_event_timeout(par->waitq, gpio_get_value(RDY_GPIO_PIN), HZ);
	317	}
	318
	319	static int am200_wait_event_intr(struct metronomefb_par *par)
	320	{
	321	return wait_event_interruptible_timeout(par->waitq,
	322	gpio_get_value(RDY_GPIO_PIN), HZ);
	323	}
	324
	325	static struct metronome_board am200_board = {
	326	.owner = THIS_MODULE,
	327	.setup_irq = am200_setup_irq,
	328	.setup_io = am200_init_gpio_regs,
	329	.setup_fb = am200_setup_fb,
	330	.set_rst = am200_set_rst,
	331	.set_stdby = am200_set_stdby,
	332	.met_wait_event = am200_wait_event,
	333	.met_wait_event_intr = am200_wait_event_intr,
	334	.get_panel_type = am200_get_panel_type,
	335	.cleanup = am200_cleanup,
	336	};
	337
854feaed JK	338	static unsigned long am200_pin_config[] __initdata = {
	339	GPIO51_GPIO,
	340	GPIO49_GPIO,
	341	GPIO48_GPIO,
	342	GPIO32_GPIO,
	343	GPIO17_GPIO,
	344	GPIO16_GPIO,
	345	};
	346
3332b0c1	347	int __init am200_init(void)
92261343 JK	348	{
	349	int ret;
	350
	351	/* before anything else, we request notification for any fb
	352	* creation events */
	353	fb_register_client(&am200_fb_notif);
	354
854feaed JK	355	pxa2xx_mfp_config(ARRAY_AND_SIZE(am200_pin_config));
854feaed JK	356
92261343 JK	357	/* request our platform independent driver */
	358	request_module("metronomefb");
	359
	360	am200_device = platform_device_alloc("metronomefb", -1);
	361	if (!am200_device)
	362	return -ENOMEM;
	363
	364	/* the am200_board that will be seen by metronomefb is a copy */
	365	platform_device_add_data(am200_device, &am200_board,
	366	sizeof(am200_board));
	367
	368	/* this _add binds metronomefb to am200. metronomefb refcounts am200 */
	369	ret = platform_device_add(am200_device);
	370
	371	if (ret) {
	372	platform_device_put(am200_device);
	373	fb_unregister_client(&am200_fb_notif);
	374	return ret;
	375	}
	376
	377	am200_presetup_fb();
	378
	379	return 0;
	380	}
	381
	382	module_param(panel_type, uint, 0);
	383	MODULE_PARM_DESC(panel_type, "Select the panel type: 6, 8, 97");
	384
92261343 JK	385	MODULE_DESCRIPTION("board driver for am200 metronome epd kit");
	386	MODULE_AUTHOR("Jaya Kumar");
	387	MODULE_LICENSE("GPL");