From caec700c9a87d1565d4e3e37c5c4ce9a5e51c052 Mon Sep 17 00:00:00 2001
From: lars <lars@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Wed, 4 Aug 2010 13:33:55 +0000
Subject: [xburst] Drop 2.6.32 patches

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22485 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../files-2.6.32/drivers/video/metronomefb.c       | 1341 --------------------
 1 file changed, 1341 deletions(-)
 delete mode 100644 target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c

(limited to 'target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c')

diff --git a/target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c b/target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c
deleted file mode 100644
index 390d26e0d..000000000
--- a/target/linux/xburst/files-2.6.32/drivers/video/metronomefb.c
+++ /dev/null
@@ -1,1341 +0,0 @@
-/*
- * linux/drivers/video/metronomefb.c -- FB driver for Metronome controller
- *
- * 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.
- * It is intended to be architecture independent. A board specific driver
- * must be used to perform all the physical IO interactions. An example
- * is provided as am200epd.c
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/list.h>
-#include <linux/firmware.h>
-#include <linux/dma-mapping.h>
-#include <linux/uaccess.h>
-#include <linux/irq.h>
-#include <linux/ctype.h>
-
-#include <video/metronomefb.h>
-
-#include <asm/unaligned.h>
-
-#define WF_MODE_INIT	0 /* Initialization */
-#define WF_MODE_MU	1 /* Monochrome update */
-#define WF_MODE_GU	2 /* Grayscale update */
-#define WF_MODE_GC	3 /* Grayscale clearing */
-
-static int temp = 25;
-
-/* frame differs from image. frame includes non-visible pixels */
-struct epd_frame {
-	int fw; /* frame width */
-	int fh; /* frame height */
-	u16 config[4];
-	int wfm_size;
-};
-
-static const struct epd_frame epd_frame_table[] = {
-	{
-		.fw = 832,
-		.fh = 622,
-		.config = {
-			15 /* sdlew */
-			| 2 << 8 /* sdosz */
-			| 0 << 11 /* sdor */
-			| 0 << 12 /* sdces */
-			| 0 << 15, /* sdcer */
-			42 /* gdspl */
-			| 1 << 8 /* gdr1 */
-			| 1 << 9 /* sdshr */
-			| 0 << 15, /* gdspp */
-			18 /* gdspw */
-			| 0 << 15, /* dispc */
-			599 /* vdlc */
-			| 0 << 11 /* dsi */
-			| 0 << 12, /* dsic */
-		},
-		.wfm_size = 47001,
-	},
-	{
-		.fw = 1088,
-		.fh = 791,
-		.config = {
-			0x0104,
-			0x031f,
-			0x0088,
-			0x02ff,
-		},
-		.wfm_size = 46770,
-	},
-	{
-		.fw = 1200,
-		.fh = 842,
-		.config = {
-			0x0101,
-			0x030e,
-			0x0012,
-			0x0280,
-		},
-		.wfm_size = 46770,
-	},
-	{
-		.fw = 800,
-		.fh = 600,
-		.config = {
-			15 /* sdlew */
-			| 2 << 8 /* sdosz */
-			| 0 << 11 /* sdor */
-			| 0 << 12 /* sdces */
-			| 0 << 15, /* sdcer */
-			42 /* gdspl */
-			| 1 << 8 /* gdr1 */
-			| 1 << 9 /* sdshr */
-			| 0 << 15, /* gdspp */
-			18 /* gdspw */
-			| 0 << 15, /* dispc */
-			599 /* vdlc */
-			| 0 << 11 /* dsi */
-			| 0 << 12, /* dsic */
-		},
-		.wfm_size = 46901,
-	},
-};
-
-static const struct fb_fix_screeninfo metronomefb_fix __devinitconst = {
-	.id =		"metronomefb",
-	.type =		FB_TYPE_PACKED_PIXELS,
-	.visual =	FB_VISUAL_STATIC_PSEUDOCOLOR,
-	.xpanstep =	0,
-	.ypanstep =	0,
-	.ywrapstep =	0,
-	.accel =	FB_ACCEL_NONE,
-};
-
-static const struct fb_var_screeninfo metronomefb_var __devinitconst = {
-	.bits_per_pixel	= 8,
-	.grayscale	= 1,
-	.nonstd		= 1,
-	.red =		{ 4, 3, 0 },
-	.green =	{ 0, 0, 0 },
-	.blue =		{ 0, 0, 0 },
-	.transp =	{ 0, 0, 0 },
-};
-
-/* the waveform structure that is coming from userspace firmware */
-struct waveform_hdr {
-	u8 stuff[32];
-
-	u8 wmta[3];
-	u8 fvsn;
-
-	u8 luts;
-	u8 mc;
-	u8 trc;
-	u8 stuff3;
-
-	u8 endb;
-	u8 swtb;
-	u8 stuff2a[2];
-
-	u8 stuff2b[3];
-	u8 wfm_cs;
-} __attribute__ ((packed));
-
-/* main metronomefb functions */
-static u8 calc_cksum(int start, int end, u8 *mem)
-{
-	u8 tmp = 0;
-	int i;
-
-	for (i = start; i < end; i++)
-		tmp += mem[i];
-
-	return tmp;
-}
-
-static u16 calc_img_cksum(u16 *start, int length)
-{
-	u16 tmp = 0;
-
-	while (length--)
-		tmp += *start++;
-
-	return tmp;
-}
-
-/* here we decode the incoming waveform file and populate metromem */
-static int load_waveform(u8 *mem, size_t size, int m, int t,
-				struct metronomefb_par *par)
-{
-	int tta;
-	int wmta;
-	int trn = 0;
-	int i;
-	unsigned char v;
-	u8 cksum;
-	int cksum_idx;
-	int wfm_idx, owfm_idx;
-	int mem_idx = 0;
-	struct waveform_hdr *wfm_hdr;
-	u8 *metromem = par->metromem_wfm;
-	struct device *dev = &par->pdev->dev;
-	u8 mc, trc;
-	u16 *p;
-	u16 img_cksum;
-
-	dev_dbg(dev, "Loading waveforms, mode %d, temperature %d\n", m, t);
-
-	wfm_hdr = (struct waveform_hdr *) mem;
-
-	if (wfm_hdr->fvsn != 1) {
-		dev_err(dev, "Error: bad fvsn %x\n", wfm_hdr->fvsn);
-		return -EINVAL;
-	}
-	if (wfm_hdr->luts != 0) {
-		dev_err(dev, "Error: bad luts %x\n", wfm_hdr->luts);
-		return -EINVAL;
-	}
-	cksum = calc_cksum(32, 47, mem);
-	if (cksum != wfm_hdr->wfm_cs) {
-		dev_err(dev, "Error: bad cksum %x != %x\n", cksum,
-					wfm_hdr->wfm_cs);
-		return -EINVAL;
-	}
-	mc = wfm_hdr->mc + 1;
-	trc = wfm_hdr->trc + 1;
-
-	for (i = 0; i < 5; i++) {
-		if (*(wfm_hdr->stuff2a + i) != 0) {
-			dev_err(dev, "Error: unexpected value in padding\n");
-			return -EINVAL;
-		}
-	}
-
-	/* calculating trn. trn is something used to index into
-	the waveform. presumably selecting the right one for the
-	desired temperature. it works out the offset of the first
-	v that exceeds the specified temperature */
-	if ((sizeof(*wfm_hdr) + trc) > size)
-		return -EINVAL;
-
-	for (i = sizeof(*wfm_hdr); i <= sizeof(*wfm_hdr) + trc; i++) {
-		if (mem[i] > t) {
-			trn = i - sizeof(*wfm_hdr) - 1;
-			break;
-		}
-	}
-
-	/* check temperature range table checksum */
-	cksum_idx = sizeof(*wfm_hdr) + trc + 1;
-	if (cksum_idx > size)
-		return -EINVAL;
-	cksum = calc_cksum(sizeof(*wfm_hdr), cksum_idx, mem);
-	if (cksum != mem[cksum_idx]) {
-		dev_err(dev, "Error: bad temperature range table cksum"
-				" %x != %x\n", cksum, mem[cksum_idx]);
-		return -EINVAL;
-	}
-
-	/* check waveform mode table address checksum */
-	wmta = get_unaligned_le32(wfm_hdr->wmta) & 0x00FFFFFF;
-	cksum_idx = wmta + m*4 + 3;
-	if (cksum_idx > size)
-		return -EINVAL;
-	cksum = calc_cksum(cksum_idx - 3, cksum_idx, mem);
-	if (cksum != mem[cksum_idx]) {
-		dev_err(dev, "Error: bad mode table address cksum"
-				" %x != %x\n", cksum, mem[cksum_idx]);
-		return -EINVAL;
-	}
-
-	/* check waveform temperature table address checksum */
-	tta = get_unaligned_le32(mem + wmta + m * 4) & 0x00FFFFFF;
-	cksum_idx = tta + trn*4 + 3;
-	if (cksum_idx > size)
-		return -EINVAL;
-	cksum = calc_cksum(cksum_idx - 3, cksum_idx, mem);
-	if (cksum != mem[cksum_idx]) {
-		dev_err(dev, "Error: bad temperature table address cksum"
-			" %x != %x\n", cksum, mem[cksum_idx]);
-		return -EINVAL;
-	}
-
-	/* here we do the real work of putting the waveform into the
-	metromem buffer. this does runlength decoding of the waveform */
-	wfm_idx = get_unaligned_le32(mem + tta + trn * 4) & 0x00FFFFFF;
-	owfm_idx = wfm_idx;
-	if (wfm_idx > size)
-		return -EINVAL;
-	while (wfm_idx < size) {
-		unsigned char rl;
-		v = mem[wfm_idx++];
-		if (v == wfm_hdr->swtb) {
-			while (((v = mem[wfm_idx++]) != wfm_hdr->swtb) &&
-				wfm_idx < size)
-				metromem[mem_idx++] = v;
-
-			continue;
-		}
-
-		if (v == wfm_hdr->endb)
-			break;
-
-		rl = mem[wfm_idx++];
-		for (i = 0; i <= rl; i++)
-			metromem[mem_idx++] = v;
-	}
-
-	cksum_idx = wfm_idx;
-	if (cksum_idx > size)
-		return -EINVAL;
-	dev_dbg(dev, "mem_idx = %u\n", mem_idx);
-	cksum = calc_cksum(owfm_idx, cksum_idx, mem);
-	if (cksum != mem[cksum_idx]) {
-		dev_err(dev, "Error: bad waveform data cksum"
-				" %x != %x\n", cksum, mem[cksum_idx]);
-		return -EINVAL;
-	}
-	par->frame_count = (mem_idx/64);
-
-	p = (u16 *)par->metromem_wfm;
-	img_cksum = calc_img_cksum(p, 16384 / 2);
-	p[16384 / 2] = __cpu_to_le16(img_cksum);
-
-	par->current_wf_mode = m;
-	par->current_wf_temp = t;
-
-	return 0;
-}
-
-static int check_err(struct metronomefb_par *par)
-{
-	int res;
-
-	res = par->board->get_err(par);
-	dev_dbg(&par->pdev->dev, "ERR = %d\n", res);
-	return res;
-}
-
-static inline int wait_for_rdy(struct metronomefb_par *par)
-{
-	int res = 0;
-
-	if (!par->board->get_rdy(par))
-		res = par->board->met_wait_event_intr(par);
-
-	return res;
-}
-
-static int metronome_display_cmd(struct metronomefb_par *par)
-{
-	int i;
-	u16 cs;
-	u16 opcode;
-	int res;
-
-	res = wait_for_rdy(par);
-	if (res)
-		return res;
-
-	dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
-	/* setup display command
-	we can't immediately set the opcode since the controller
-	will try parse the command before we've set it all up
-	so we just set cs here and set the opcode at the end */
-
-	if (par->metromem_cmd->opcode == 0xCC40)
-		opcode = cs = 0xCC41;
-	else
-		opcode = cs = 0xCC40;
-
-	/* set the args ( 2 bytes ) for display */
-	i = 0;
-	par->metromem_cmd->args[i] = 	0 << 3 /* border update */
-					| (3 << 4)
-//					| ((borderval++ % 4) & 0x0F) << 4
-					| (par->frame_count - 1) << 8;
-	cs += par->metromem_cmd->args[i++];
-
-	/* the rest are 0 */
-	memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
-
-	par->metromem_cmd->csum = cs;
-	par->metromem_cmd->opcode = opcode; /* display cmd */
-
-	return 0;
-
-}
-
-static int __devinit metronome_powerup_cmd(struct metronomefb_par *par)
-{
-	int i;
-	u16 cs;
-	int res;
-
-	dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
-	/* setup power up command */
-	par->metromem_cmd->opcode = 0x1234; /* pwr up pseudo cmd */
-	cs = par->metromem_cmd->opcode;
-
-	/* set pwr1,2,3 to 1024 */
-	for (i = 0; i < 3; i++) {
-//		par->metromem_cmd->args[i] = 1024;
-		par->metromem_cmd->args[i] = 100;
-		cs += par->metromem_cmd->args[i];
-	}
-
-	/* the rest are 0 */
-	memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
-
-	par->metromem_cmd->csum = cs;
-
-	msleep(1);
-	par->board->set_rst(par, 1);
-
-	msleep(1);
-	par->board->set_stdby(par, 1);
-
-	res = par->board->met_wait_event(par);
-	dev_dbg(&par->pdev->dev, "%s: EXIT: %d\n", __func__, res);
-	return res;
-}
-
-static int __devinit metronome_config_cmd(struct metronomefb_par *par)
-{
-	/* setup config command
-	we can't immediately set the opcode since the controller
-	will try parse the command before we've set it all up */
-
-	dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
-	memcpy(par->metromem_cmd->args, par->epd_frame->config,
-		sizeof(par->epd_frame->config));
-	/* the rest are 0 */
-	memset((u8 *) (par->metromem_cmd->args + 4), 0, (32-4)*2);
-
-	par->metromem_cmd->csum = 0xCC10;
-	par->metromem_cmd->csum += calc_img_cksum(par->metromem_cmd->args, 4);
-	par->metromem_cmd->opcode = 0xCC10; /* config cmd */
-
-	return par->board->met_wait_event(par);
-}
-
-static int __devinit metronome_init_cmd(struct metronomefb_par *par)
-{
-	int i;
-	u16 cs;
-
-	/* setup init command
-	we can't immediately set the opcode since the controller
-	will try parse the command before we've set it all up
-	so we just set cs here and set the opcode at the end */
-
-	dev_dbg(&par->pdev->dev, "%s: ENTER\n", __func__);
-	cs = 0xCC20;
-
-	/* set the args ( 2 bytes ) for init */
-	i = 0;
-	par->metromem_cmd->args[i] = 0x0007;
-	cs += par->metromem_cmd->args[i++];
-
-	/* the rest are 0 */
-	memset((u8 *) (par->metromem_cmd->args + i), 0, (32-i)*2);
-
-	par->metromem_cmd->csum = cs;
-	par->metromem_cmd->opcode = 0xCC20; /* init cmd */
-
-	return par->board->met_wait_event(par);
-}
-
-static int metronome_bootup(struct metronomefb_par *par)
-{
-	int res;
-
-	res = metronome_powerup_cmd(par);
-	if (res) {
-		dev_err(&par->pdev->dev, "metronomefb: POWERUP cmd failed\n");
-		goto finish;
-	}
-
-	check_err(par);
-	res = metronome_config_cmd(par);
-	if (res) {
-		dev_err(&par->pdev->dev, "metronomefb: CONFIG cmd failed\n");
-		goto finish;
-	}
-	check_err(par);
-
-	res = metronome_init_cmd(par);
-	if (res)
-		dev_err(&par->pdev->dev, "metronomefb: INIT cmd failed\n");
-	check_err(par);
-
-finish:
-	return res;
-}
-
-static int __devinit metronome_init_regs(struct metronomefb_par *par)
-{
-	int res;
-
-	if (par->board->power_ctl)
-		par->board->power_ctl(par, METRONOME_POWER_ON);
-
-	res =  metronome_bootup(par);
-
-	return res;
-}
-
-static uint16_t metronomefb_update_img_buffer_rotated(struct metronomefb_par *par)
-{
-	int x, y;
-	int xstep, ystep;
-	int i, j;
-	uint16_t cksum = 0;
-	uint8_t *buf = par->info->screen_base;
-	uint32_t *img = (uint32_t *)(par->metromem_img);
-	int fw = par->epd_frame->fw;
-	int fh = par->epd_frame->fh;
-	int fw_buf = fw / 4;
-	uint32_t *fxbuckets = par->fxbuckets;
-	uint32_t *fybuckets = par->fybuckets;
-	uint32_t diff;
-	uint32_t tmp;
-
-	switch (par->info->var.rotate) {
-	case FB_ROTATE_CW:
-		xstep = -fh;
-		ystep = fw * fh + 1;
-		j = (fw - 1) * fh;
-		break;
-	case FB_ROTATE_UD:
-		xstep = -1;
-		ystep = 0;
-		j = fw * fh - 1;
-		break;
-	case FB_ROTATE_CCW:
-		xstep = fh;
-		ystep = -fw * fh - 1;
-		j = fh - 1;
-		break;
-	default:
-		BUG();
-		break;
-	}
-
-	memset(fxbuckets, 0, fw_buf * sizeof(*fxbuckets));
-	memset(fybuckets, 0, fh * sizeof(*fybuckets));
-
-	i = 0;
-	for (y = 0; y < fh; y++) {
-		for(x = 0; x < fw_buf; x++, i++) {
-			if (j < 0 || j >= fw * fh) {
-				printk("moo: %d %d %d %d %d\n", j, x, y, fw_buf, fh);
-				return 0;
-			}
-			tmp = (buf[j] << 5);
-			j += xstep;
-			tmp |= (buf[j] << 13);
-			j += xstep;
-			tmp |= (buf[j] << 21);
-			j += xstep;
-			tmp |= (buf[j] << 29);
-			j += xstep;
-			tmp &= 0xe0e0e0e0;
-
-			img[i] &= 0xf0f0f0f0;
-			diff = img[i] ^ tmp;
-
-			fxbuckets[x] |= diff;
-			fybuckets[y] |= diff;
-
-			img[i] = (img[i] >> 4) | tmp;
-			cksum += img[i] & 0x0000ffff;
-			cksum += (img[i] >> 16);
-
-		}
-		j += ystep;
-	}
-
-	return cksum;
-}
-
-static uint16_t metronomefb_update_img_buffer_normal(struct metronomefb_par *par)
-{
-	int x, y, i;
-	uint16_t cksum = 0;
-	uint32_t *buf = (uint32_t __force *)par->info->screen_base;
-	uint32_t *img = (uint32_t *)(par->metromem_img);
-	uint32_t diff;
-	uint32_t tmp;
-	int fw = par->epd_frame->fw;
-	int fh = par->epd_frame->fh;
-	int fw_buf = fw / sizeof(*buf);
-	uint32_t *fxbuckets = par->fxbuckets;
-	uint32_t *fybuckets = par->fybuckets;
-
-	memset(fxbuckets, 0, fw_buf * sizeof(*fxbuckets));
-	memset(fybuckets, 0, fh * sizeof(*fybuckets));
-
-	i = 0;
-	for (y = 0; y < fh; y++) {
-		for(x = 0; x < fw_buf; x++, i++) {
-			tmp = (buf[i] << 5) & 0xe0e0e0e0;
-			img[i] &= 0xf0f0f0f0;
-			diff = img[i] ^ tmp;
-
-			fxbuckets[x] |= diff;
-			fybuckets[y] |= diff;
-
-			img[i] = (img[i] >> 4) | tmp;
-			cksum += img[i] & 0x0000ffff;
-			cksum += (img[i] >> 16);
-		}
-	}
-
-	return cksum;
-}
-
-static unsigned int metronomefb_get_change_count(struct metronomefb_par *par)
-{
-	int min_x;
-	int max_x;
-	int min_y;
-	int max_y;
-	int fw = par->epd_frame->fw / 4;
-	int fh = par->epd_frame->fh;
-	unsigned int change_count;
-	uint32_t *fxbuckets = par->fxbuckets;
-	uint32_t *fybuckets = par->fybuckets;
-
-	for (min_x = 0; min_x < fw; ++min_x) {
-		if(fxbuckets[min_x])
-			break;
-	}
-
-	for (max_x = fw - 1; max_x >= 0; --max_x) {
-		if(fxbuckets[max_x])
-			break;
-	}
-
-	for (min_y = 0; min_y < fh; min_y++) {
-		if(fybuckets[min_y])
-			break;
-	}
-
-	for (max_y = fh - 1; max_y >= 0; --max_y) {
-		if(fybuckets[max_y])
-			break;
-	}
-
-	if ((min_x > max_x) || (min_y > max_y))
-		change_count = 0;
-	else
-		change_count = (max_x - min_x + 1) * (max_y - min_y + 1) * 4;
-
-	dev_dbg(&par->pdev->dev, "min_x = %d, max_x = %d, min_y = %d, max_y = %d\n",
-			min_x, max_x, min_y, max_y);
-
-	return change_count;
-}
-
-static void metronomefb_dpy_update(struct metronomefb_par *par, int clear_all)
-{
-	unsigned int fbsize = par->info->fix.smem_len;
-	uint16_t cksum;
-	int m;
-
-	wait_for_rdy(par);
-
-	if (par->info->var.rotate == 0)
-		cksum = metronomefb_update_img_buffer_normal(par);
-	else
-		cksum = metronomefb_update_img_buffer_rotated(par);
-
-	*par->metromem_img_csum = __cpu_to_le16(cksum);
-
-	if (clear_all || par->is_first_update ||
-		(par->partial_updates_count == par->partial_autorefresh_interval)) {
-		m = WF_MODE_GC;
-		par->partial_updates_count = 0;
-	} else {
-		int change_count = metronomefb_get_change_count(par);
-		if (change_count < fbsize / 100 * par->manual_refresh_threshold)
-			m = WF_MODE_GU;
-		else
-			m = WF_MODE_GC;
-
-		dev_dbg(&par->pdev->dev, "change_count = %u, treshold = %u%% (%u pixels)\n",
-				change_count, par->manual_refresh_threshold,
-				fbsize / 100 * par->manual_refresh_threshold);
-		++par->partial_updates_count;
-	}
-
-	if (m != par->current_wf_mode)
-		load_waveform((u8 *) par->firmware->data, par->firmware->size,
-				m, par->current_wf_temp, par);
-
-again:
-	metronome_display_cmd(par);
-	wait_for_rdy(par);
-	if (unlikely(check_err(par))) {
-		par->board->set_stdby(par, 0);
-		printk("Resetting Metronome\n");
-		par->board->set_rst(par, 0);
-		mdelay(1);
-		if (par->board->power_ctl)
-			par->board->power_ctl(par, METRONOME_POWER_OFF);
-
-		mdelay(1);
-		load_waveform((u8 *) par->firmware->data, par->firmware->size,
-				WF_MODE_GC, par->current_wf_temp, par);
-
-		if (par->board->power_ctl)
-			par->board->power_ctl(par, METRONOME_POWER_ON);
-		metronome_bootup(par);
-
-		goto again;
-	}
-
-	par->is_first_update = 0;
-}
-
-/* this is called back from the deferred io workqueue */
-static void metronomefb_dpy_deferred_io(struct fb_info *info,
-				struct list_head *pagelist)
-{
-	struct metronomefb_par *par = info->par;
-
-	/* We will update entire display because we need to change
-	 * 'previous image' field in pixels which was changed at
-	 * previous refresh
-	 */
-	mutex_lock(&par->lock);
-	metronomefb_dpy_update(par, 0);
-	mutex_unlock(&par->lock);
-}
-
-static void metronomefb_fillrect(struct fb_info *info,
-				   const struct fb_fillrect *rect)
-{
-	struct metronomefb_par *par = info->par;
-
-	mutex_lock(&par->lock);
-	sys_fillrect(info, rect);
-	metronomefb_dpy_update(par, 0);
-	mutex_unlock(&par->lock);
-}
-
-static void metronomefb_copyarea(struct fb_info *info,
-				   const struct fb_copyarea *area)
-{
-	struct metronomefb_par *par = info->par;
-
-	mutex_lock(&par->lock);
-	sys_copyarea(info, area);
-	metronomefb_dpy_update(par, 0);
-	mutex_unlock(&par->lock);
-}
-
-static void metronomefb_imageblit(struct fb_info *info,
-				const struct fb_image *image)
-{
-	struct metronomefb_par *par = info->par;
-
-	mutex_lock(&par->lock);
-	sys_imageblit(info, image);
-	metronomefb_dpy_update(par, 0);
-	mutex_unlock(&par->lock);
-}
-
-/*
- * this is the slow path from userspace. they can seek and write to
- * the fb. it is based on fb_sys_write
- */
-static ssize_t metronomefb_write(struct fb_info *info, const char __user *buf,
-				size_t count, loff_t *ppos)
-{
-	struct metronomefb_par *par = info->par;
-	unsigned long p = *ppos;
-	void *dst;
-	int err = 0;
-	unsigned long total_size;
-
-	if (info->state != FBINFO_STATE_RUNNING)
-		return -EPERM;
-
-	total_size = info->fix.smem_len;
-
-	if (p > total_size)
-		return -EFBIG;
-
-	if (count > total_size) {
-		err = -EFBIG;
-		count = total_size;
-	}
-
-	if (count + p > total_size) {
-		if (!err)
-			err = -ENOSPC;
-
-		count = total_size - p;
-	}
-
-	dst = (void __force *)(info->screen_base + p);
-
-	mutex_lock(&par->lock);
-
-	if (copy_from_user(dst, buf, count))
-		err = -EFAULT;
-
-	if  (!err)
-		*ppos += count;
-
-	metronomefb_dpy_update(par, 0);
-	mutex_unlock(&par->lock);
-
-	return (err) ? err : count;
-}
-
-static int metronome_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
-{
-	struct metronomefb_par *par = info->par;
-
-	if (par->epd_frame->fw == var->xres && par->epd_frame->fh == var->yres)
-		return 0;
-
-	return -EINVAL;
-}
-
-static int metronomefb_set_par(struct fb_info *info)
-{
-	struct metronomefb_par *par = info->par;
-
-	switch (info->var.rotate) {
-	case FB_ROTATE_CW:
-	case FB_ROTATE_CCW:
-		info->fix.line_length = info->var.yres;
-		break;
-	case FB_ROTATE_UD:
-	default:
-		info->fix.line_length = info->var.xres;
-		break;
-	}
-
-	mutex_lock(&par->lock);
-	metronomefb_dpy_update(info->par, 1);
-	mutex_unlock(&par->lock);
-
-	return 0;
-}
-
-static struct fb_ops metronomefb_ops = {
-	.owner		= THIS_MODULE,
-	.fb_write	= metronomefb_write,
-	.fb_fillrect	= metronomefb_fillrect,
-	.fb_copyarea	= metronomefb_copyarea,
-	.fb_imageblit	= metronomefb_imageblit,
-	.fb_check_var	= metronome_check_var,
-	.fb_set_par	= metronomefb_set_par,
-};
-
-static struct fb_deferred_io metronomefb_defio = {
-	.delay		= HZ / 4,
-	.deferred_io	= metronomefb_dpy_deferred_io,
-};
-
-static ssize_t metronomefb_defio_delay_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-
-	sprintf(buf, "%lu\n", info->fbdefio->delay * 1000 / HZ);
-	return strlen(buf) + 1;
-}
-
-static ssize_t metronomefb_defio_delay_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	char *after;
-	unsigned long state = simple_strtoul(buf, &after, 10);
-	size_t count = after - buf;
-	ssize_t ret = -EINVAL;
-
-	if (*after && isspace(*after))
-		count++;
-
-	state = state * HZ / 1000;
-
-	if (!state)
-		state = 1;
-
-	if (count == size) {
-		ret = count;
-		info->fbdefio->delay = state;
-	}
-
-	return ret;
-}
-
-static ssize_t metronomefb_manual_refresh_thr_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct metronomefb_par *par = info->par;
-
-	return sprintf(buf, "%u\n", par->manual_refresh_threshold);
-}
-
-static ssize_t metronomefb_manual_refresh_thr_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct metronomefb_par *par = info->par;
-	char *after;
-	unsigned long val = simple_strtoul(buf, &after, 10);
-	size_t count = after - buf;
-	ssize_t ret = -EINVAL;
-
-	if (*after && isspace(*after))
-		count++;
-
-	if (val > 100)
-		return -EINVAL;
-
-
-	if (count == size) {
-		ret = count;
-		par->manual_refresh_threshold = val;
-	}
-
-	return ret;
-}
-
-static ssize_t metronomefb_autorefresh_interval_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct metronomefb_par *par = info->par;
-
-	return sprintf(buf, "%u\n", par->partial_autorefresh_interval);
-}
-
-static ssize_t metronomefb_autorefresh_interval_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct metronomefb_par *par = info->par;
-	char *after;
-	unsigned long val = simple_strtoul(buf, &after, 10);
-	size_t count = after - buf;
-	ssize_t ret = -EINVAL;
-
-	if (*after && isspace(*after))
-		count++;
-
-	if (val > 100)
-		return -EINVAL;
-
-
-	if (count == size) {
-		ret = count;
-		par->partial_autorefresh_interval = val;
-	}
-
-	return ret;
-}
-
-static ssize_t metronomefb_temp_show(struct device *dev,
-		struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct metronomefb_par *par = info->par;
-
-	return sprintf(buf, "%u\n", par->current_wf_temp);
-}
-
-static ssize_t metronomefb_temp_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t size)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct metronomefb_par *par = info->par;
-	char *after;
-	unsigned long val = simple_strtoul(buf, &after, 10);
-	size_t count = after - buf;
-	ssize_t ret = -EINVAL;
-
-	if (*after && isspace(*after))
-		count++;
-
-	if (val > 100)
-		return -EINVAL;
-
-
-	if (count == size) {
-		ret = count;
-		if (val != par->current_wf_temp)
-			load_waveform((u8 *) par->firmware->data, par->firmware->size,
-					par->current_wf_mode, val, par);
-	}
-
-	return ret;
-}
-
-DEVICE_ATTR(defio_delay, 0644,
-		metronomefb_defio_delay_show, metronomefb_defio_delay_store);
-DEVICE_ATTR(manual_refresh_threshold, 0644,
-		metronomefb_manual_refresh_thr_show, metronomefb_manual_refresh_thr_store);
-DEVICE_ATTR(temp, 0644,
-		metronomefb_temp_show, metronomefb_temp_store);
-DEVICE_ATTR(autorefresh_interval, 0644,
-		metronomefb_autorefresh_interval_show, metronomefb_autorefresh_interval_store);
-
-
-static int __devinit metronomefb_probe(struct platform_device *dev)
-{
-	struct fb_info *info;
-	struct metronome_board *board;
-	int retval = -ENOMEM;
-	int videomemorysize;
-	unsigned char *videomemory;
-	struct metronomefb_par *par;
-	const struct firmware *fw_entry;
-	int i;
-	int panel_type;
-	int fw, fh;
-	int epd_dt_index;
-
-	/* pick up board specific routines */
-	board = dev->dev.platform_data;
-	if (!board)
-		return -EINVAL;
-
-	/* try to count device specific driver, if can't, platform recalls */
-	if (!try_module_get(board->owner))
-		return -ENODEV;
-
-	info = framebuffer_alloc(sizeof(struct metronomefb_par), &dev->dev);
-	if (!info)
-		goto err;
-
-	/* we have two blocks of memory.
-	info->screen_base which is vm, and is the fb used by apps.
-	par->metromem which is physically contiguous memory and
-	contains the display controller commands, waveform,
-	processed image data and padding. this is the data pulled
-	by the device's LCD controller and pushed to Metronome.
-	the metromem memory is allocated by the board driver and
-	is provided to us */
-
-	panel_type = board->get_panel_type();
-	switch (panel_type) {
-	case 5:
-		epd_dt_index = 3;
-		break;
-	case 6:
-		epd_dt_index = 0;
-		break;
-	case 8:
-		epd_dt_index = 1;
-		break;
-	case 97:
-		epd_dt_index = 2;
-		break;
-	default:
-		dev_err(&dev->dev, "Unexpected panel type. Defaulting to 6\n");
-		epd_dt_index = 0;
-		break;
-	}
-
-	fw = epd_frame_table[epd_dt_index].fw;
-	fh = epd_frame_table[epd_dt_index].fh;
-
-	/* we need to add a spare page because our csum caching scheme walks
-	 * to the end of the page */
-	videomemorysize = PAGE_SIZE + (fw * fh);
-	videomemory = vmalloc(videomemorysize);
-	if (!videomemory)
-		goto err_fb_rel;
-
-	memset(videomemory, 0xff, videomemorysize);
-
-	info->screen_base = (char __force __iomem *)videomemory;
-	info->fbops = &metronomefb_ops;
-
-	info->var = metronomefb_var;
-	info->var.xres = fw;
-	info->var.yres = fh;
-	info->var.xres_virtual = fw;
-	info->var.yres_virtual = fh;
-	info->fix = metronomefb_fix;
-	info->fix.line_length = fw;
-	info->fix.smem_len = fw * fh; /* Real size of image area */
-	par = info->par;
-	par->info = info;
-	par->board = board;
-	par->epd_frame = &epd_frame_table[epd_dt_index];
-	par->pdev = dev;
-
-	par->fxbuckets = kmalloc((fw / 4 + 1) * sizeof(*par->fxbuckets), GFP_KERNEL);
-	if (!par->fxbuckets)
-		goto err_vfree;
-
-	par->fybuckets = kmalloc(fh * sizeof(*par->fybuckets), GFP_KERNEL);
-	if (!par->fybuckets)
-		goto err_fxbuckets;
-
-	init_waitqueue_head(&par->waitq);
-	par->manual_refresh_threshold = 60;
-	par->partial_autorefresh_interval = 256;
-	par->partial_updates_count = 0;
-	par->is_first_update = 1;
-	mutex_init(&par->lock);
-
-	/* this table caches per page csum values. */
-	par->csum_table = vmalloc(videomemorysize/PAGE_SIZE);
-	if (!par->csum_table)
-		goto err_fybuckets;
-
-	/* the physical framebuffer that we use is setup by
-	 * the platform device driver. It will provide us
-	 * with cmd, wfm and image memory in a contiguous area. */
-	retval = board->setup_fb(par);
-	if (retval) {
-		dev_err(&dev->dev, "Failed to setup fb\n");
-		goto err_csum_table;
-	}
-
-	/* after this point we should have a framebuffer */
-	if ((!par->metromem_wfm) ||  (!par->metromem_img) ||
-		(!par->metromem_dma)) {
-		dev_err(&dev->dev, "fb access failure\n");
-		retval = -EINVAL;
-		goto err_csum_table;
-	}
-
-	info->fix.smem_start = par->metromem_dma;
-
-	/* load the waveform in. assume mode 3, temp 31 for now
-		a) request the waveform file from userspace
-		b) process waveform and decode into metromem */
-	retval = request_firmware(&fw_entry, "metronome.wbf", &dev->dev);
-	if (retval < 0) {
-		dev_err(&dev->dev, "Failed to get waveform\n");
-		goto err_csum_table;
-	}
-
-	retval = load_waveform((u8 *) fw_entry->data, fw_entry->size, WF_MODE_GC, temp,
-				par);
-	if (retval < 0) {
-		dev_err(&dev->dev, "Failed processing waveform\n");
-		goto err_csum_table;
-	}
-	par->firmware = fw_entry;
-
-	retval = board->setup_io(par);
-	if (retval) {
-		dev_err(&dev->dev, "metronomefb: setup_io() failed\n");
-		goto err_csum_table;
-	}
-
-	if (board->setup_irq(info))
-		goto err_csum_table;
-
-	retval = metronome_init_regs(par);
-	if (retval < 0)
-		goto err_free_irq;
-
-	info->flags = FBINFO_FLAG_DEFAULT;
-
-	info->fbdefio = &metronomefb_defio;
-	fb_deferred_io_init(info);
-
-	retval = fb_alloc_cmap(&info->cmap, 8, 0);
-	if (retval < 0) {
-		dev_err(&dev->dev, "Failed to allocate colormap\n");
-		goto err_free_irq;
-	}
-
-	/* set cmap */
-	for (i = 0; i < 8; i++)
-		info->cmap.red[i] = ((2 * i + 1)*(0xFFFF))/16;
-	memcpy(info->cmap.green, info->cmap.red, sizeof(u16)*8);
-	memcpy(info->cmap.blue, info->cmap.red, sizeof(u16)*8);
-
-	retval = register_framebuffer(info);
-	if (retval < 0)
-		goto err_cmap;
-
-	platform_set_drvdata(dev, info);
-
-	retval = device_create_file(info->dev, &dev_attr_defio_delay);
-	if (retval)
-		goto err_devattr_defio_delay;
-
-	retval = device_create_file(info->dev, &dev_attr_manual_refresh_threshold);
-	if (retval)
-		goto err_devattr_manual_refresh_thr;
-
-	retval = device_create_file(info->dev, &dev_attr_temp);
-	if (retval)
-		goto err_devattr_temp;
-
-	retval = device_create_file(info->dev, &dev_attr_autorefresh_interval);
-	if (retval)
-		goto err_devattr_autorefresh;
-
-	dev_info(&dev->dev,
-		"fb%d: Metronome frame buffer device, using %dK of video"
-		" memory\n", info->node, videomemorysize >> 10);
-
-	return 0;
-
-	device_remove_file(info->dev, &dev_attr_autorefresh_interval);
-err_devattr_autorefresh:
-	device_remove_file(info->dev, &dev_attr_temp);
-err_devattr_temp:
-	device_remove_file(info->dev, &dev_attr_manual_refresh_threshold);
-err_devattr_manual_refresh_thr:
-	device_remove_file(info->dev, &dev_attr_defio_delay);
-err_devattr_defio_delay:
-	unregister_framebuffer(info);
-err_cmap:
-	fb_dealloc_cmap(&info->cmap);
-err_free_irq:
-	board->cleanup(par);
-err_csum_table:
-	vfree(par->csum_table);
-err_fybuckets:
-	kfree(par->fybuckets);
-err_fxbuckets:
-	kfree(par->fxbuckets);
-err_vfree:
-	vfree(videomemory);
-err_fb_rel:
-	framebuffer_release(info);
-err:
-	module_put(board->owner);
-	return retval;
-}
-
-static int __devexit metronomefb_remove(struct platform_device *dev)
-{
-	struct fb_info *info = platform_get_drvdata(dev);
-
-	if (info) {
-		struct metronomefb_par *par = info->par;
-
-		par->board->set_stdby(par, 0);
-		mdelay(1);
-		if (par->board->power_ctl)
-			par->board->power_ctl(par, METRONOME_POWER_OFF);
-
-		device_remove_file(info->dev, &dev_attr_autorefresh_interval);
-		device_remove_file(info->dev, &dev_attr_temp);
-		device_remove_file(info->dev, &dev_attr_manual_refresh_threshold);
-		device_remove_file(info->dev, &dev_attr_defio_delay);
-		unregister_framebuffer(info);
-		fb_deferred_io_cleanup(info);
-		fb_dealloc_cmap(&info->cmap);
-		par->board->cleanup(par);
-		vfree(par->csum_table);
-		kfree(par->fybuckets);
-		kfree(par->fxbuckets);
-		vfree((void __force *)info->screen_base);
-		module_put(par->board->owner);
-		release_firmware(par->firmware);
-		dev_dbg(&dev->dev, "calling release\n");
-		framebuffer_release(info);
-	}
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int metronomefb_suspend(struct platform_device *pdev, pm_message_t message)
-{
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct metronomefb_par *par = info->par;
-
-	par->board->set_stdby(par, 0);
-	par->board->set_rst(par, 0);
-	if (par->board->power_ctl)
-		par->board->power_ctl(par, METRONOME_POWER_OFF);
-
-
-	return 0;
-}
-
-static int metronomefb_resume(struct platform_device *pdev)
-{
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct metronomefb_par *par = info->par;
-
-	if (par->board->power_ctl)
-		par->board->power_ctl(par, METRONOME_POWER_ON);
-
-	mutex_lock(&par->lock);
-	metronome_bootup(par);
-	mutex_unlock(&par->lock);
-
-	return 0;
-}
-
-#else
-#define metronomefb_suspend NULL
-#define metronomefb_resume NULL
-#endif
-
-
-static struct platform_driver metronomefb_driver = {
-	.driver		= {
-			.owner	= THIS_MODULE,
-			.name	= "metronomefb",
-			},
-	.probe		= metronomefb_probe,
-	.remove		= __devexit_p(metronomefb_remove),
-	.suspend	= metronomefb_suspend,
-	.resume		= metronomefb_resume,
-};
-
-static int __init metronomefb_init(void)
-{
-	return platform_driver_register(&metronomefb_driver);
-}
-
-static void __exit metronomefb_exit(void)
-{
-	platform_driver_unregister(&metronomefb_driver);
-}
-
-module_param(temp, int, 0);
-MODULE_PARM_DESC(temp, "Set current temperature");
-
-module_init(metronomefb_init);
-module_exit(metronomefb_exit);
-
-MODULE_DESCRIPTION("fbdev driver for Metronome controller");
-MODULE_AUTHOR("Jaya Kumar");
-MODULE_LICENSE("GPL");
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