From 057f6f13cff319e9f2fff39736371e95ff5ac47b Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Wed, 12 May 2010 14:24:46 +0200
Subject: [PATCH 1/5] metronome patches

---
 drivers/video/metronomefb.c |  788 +++++++++++++++++++++++++++++++++++++------
 include/video/metronomefb.h |   33 ++-
 2 files changed, 710 insertions(+), 111 deletions(-)

--- a/drivers/video/metronomefb.c
+++ b/drivers/video/metronomefb.c
@@ -18,11 +18,13 @@
  * 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>
@@ -34,16 +36,25 @@
 #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>
 
-/* Display specific information */
-#define DPY_W 832
-#define DPY_H 622
+/*
+ * 12 is ok to avoid refreshing whole screen while small elements are changed,
+ * while forcing full refresh if largish dialog boxes or menus are
+ * shown/dismissed.
+ */
+#define DEFAULT_MANUAL_REFRESH_THRESHOLD 12
+
+#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 user_wfm_size;
+static int temp = 25;
 
 /* frame differs from image. frame includes non-visible pixels */
 struct epd_frame {
@@ -53,7 +64,7 @@ struct epd_frame {
 	int wfm_size;
 };
 
-static struct epd_frame epd_frame_table[] = {
+static const struct epd_frame epd_frame_table[] = {
 	{
 		.fw = 832,
 		.fh = 622,
@@ -97,24 +108,40 @@ static struct epd_frame epd_frame_table[
 		},
 		.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 struct fb_fix_screeninfo metronomefb_fix __devinitdata = {
+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,
-	.line_length =	DPY_W,
 	.accel =	FB_ACCEL_NONE,
 };
 
-static struct fb_var_screeninfo metronomefb_var __devinitdata = {
-	.xres		= DPY_W,
-	.yres		= DPY_H,
-	.xres_virtual	= DPY_W,
-	.yres_virtual	= DPY_H,
+static const struct fb_var_screeninfo metronomefb_var __devinitconst = {
 	.bits_per_pixel	= 8,
 	.grayscale	= 1,
 	.nonstd		= 1,
@@ -167,7 +194,7 @@ static u16 calc_img_cksum(u16 *start, in
 }
 
 /* here we decode the incoming waveform file and populate metromem */
-static int __devinit load_waveform(u8 *mem, size_t size, int m, int t,
+static int load_waveform(u8 *mem, size_t size, int m, int t,
 				struct metronomefb_par *par)
 {
 	int tta;
@@ -181,16 +208,12 @@ static int __devinit load_waveform(u8 *m
 	int mem_idx = 0;
 	struct waveform_hdr *wfm_hdr;
 	u8 *metromem = par->metromem_wfm;
-	struct device *dev = par->info->dev;
+	struct device *dev = &par->pdev->dev;
+	u8 mc, trc;
+	u16 *p;
+	u16 img_cksum;
 
-	if (user_wfm_size)
-		epd_frame_table[par->dt].wfm_size = user_wfm_size;
-
-	if (size != epd_frame_table[par->dt].wfm_size) {
-		dev_err(dev, "Error: unexpected size %Zd != %d\n", size,
-					epd_frame_table[par->dt].wfm_size);
-		return -EINVAL;
-	}
+	dev_dbg(dev, "Loading waveforms, mode %d, temperature %d\n", m, t);
 
 	wfm_hdr = (struct waveform_hdr *) mem;
 
@@ -208,8 +231,9 @@ static int __devinit load_waveform(u8 *m
 					wfm_hdr->wfm_cs);
 		return -EINVAL;
 	}
-	wfm_hdr->mc += 1;
-	wfm_hdr->trc += 1;
+	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");
@@ -221,10 +245,10 @@ static int __devinit load_waveform(u8 *m
 	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) + wfm_hdr->trc) > size)
+	if ((sizeof(*wfm_hdr) + trc) > size)
 		return -EINVAL;
 
-	for (i = sizeof(*wfm_hdr); i <= sizeof(*wfm_hdr) + wfm_hdr->trc; i++) {
+	for (i = sizeof(*wfm_hdr); i <= sizeof(*wfm_hdr) + trc; i++) {
 		if (mem[i] > t) {
 			trn = i - sizeof(*wfm_hdr) - 1;
 			break;
@@ -232,7 +256,7 @@ static int __devinit load_waveform(u8 *m
 	}
 
 	/* check temperature range table checksum */
-	cksum_idx = sizeof(*wfm_hdr) + wfm_hdr->trc + 1;
+	cksum_idx = sizeof(*wfm_hdr) + trc + 1;
 	if (cksum_idx > size)
 		return -EINVAL;
 	cksum = calc_cksum(sizeof(*wfm_hdr), cksum_idx, mem);
@@ -294,6 +318,7 @@ static int __devinit load_waveform(u8 *m
 	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"
@@ -302,16 +327,47 @@ static int __devinit load_waveform(u8 *m
 	}
 	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;
-	static u8 borderval;
+	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
@@ -324,8 +380,9 @@ static int metronome_display_cmd(struct
 
 	/* set the args ( 2 bytes ) for display */
 	i = 0;
-	par->metromem_cmd->args[i] = 	1 << 3 /* border update */
-					| ((borderval++ % 4) & 0x0F) << 4
+	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++];
 
@@ -335,21 +392,25 @@ static int metronome_display_cmd(struct
 	par->metromem_cmd->csum = cs;
 	par->metromem_cmd->opcode = opcode; /* display cmd */
 
-	return par->board->met_wait_event_intr(par);
+	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] = 1024;
+		par->metromem_cmd->args[i] = 100;
 		cs += par->metromem_cmd->args[i];
 	}
 
@@ -364,7 +425,9 @@ static int __devinit metronome_powerup_c
 	msleep(1);
 	par->board->set_stdby(par, 1);
 
-	return par->board->met_wait_event(par);
+	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)
@@ -373,8 +436,9 @@ static int __devinit metronome_config_cm
 	we can't immediately set the opcode since the controller
 	will try parse the command before we've set it all up */
 
-	memcpy(par->metromem_cmd->args, epd_frame_table[par->dt].config,
-		sizeof(epd_frame_table[par->dt].config));
+	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);
 
@@ -395,11 +459,12 @@ static int __devinit metronome_init_cmd(
 	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] = 0;
+	par->metromem_cmd->args[i] = 0x0007;
 	cs += par->metromem_cmd->args[i++];
 
 	/* the rest are 0 */
@@ -411,76 +476,268 @@ static int __devinit metronome_init_cmd(
 	return par->board->met_wait_event(par);
 }
 
-static int __devinit metronome_init_regs(struct metronomefb_par *par)
+static int metronome_bootup(struct metronomefb_par *par)
 {
 	int res;
 
-	res = par->board->setup_io(par);
-	if (res)
-		return res;
-
 	res = metronome_powerup_cmd(par);
-	if (res)
-		return res;
+	if (res) {
+		dev_err(&par->pdev->dev, "metronomefb: POWERUP cmd failed\n");
+		goto finish;
+	}
 
+	check_err(par);
 	res = metronome_config_cmd(par);
-	if (res)
-		return res;
+	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 void metronomefb_dpy_update(struct metronomefb_par *par)
+static uint16_t metronomefb_update_img_buffer_rotated(struct metronomefb_par *par)
 {
-	int fbsize;
-	u16 cksum;
-	unsigned char *buf = (unsigned char __force *)par->info->screen_base;
+	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->rotation) {
+	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;
+	}
 
-	fbsize = par->info->fix.smem_len;
-	/* copy from vm to metromem */
-	memcpy(par->metromem_img, buf, fbsize);
+	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[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);
 
-	cksum = calc_img_cksum((u16 *) par->metromem_img, fbsize/2);
-	*((u16 *)(par->metromem_img) + fbsize/2) = cksum;
-	metronome_display_cmd(par);
+		}
+		j += ystep;
+	}
+
+	return cksum;
 }
 
-static u16 metronomefb_dpy_update_page(struct metronomefb_par *par, int index)
+static uint16_t metronomefb_update_img_buffer_normal(struct metronomefb_par *par)
 {
-	int i;
-	u16 csum = 0;
-	u16 *buf = (u16 __force *)(par->info->screen_base + index);
-	u16 *img = (u16 *)(par->metromem_img + index);
-
-	/* swizzle from vm to metromem and recalc cksum at the same time*/
-	for (i = 0; i < PAGE_SIZE/2; i++) {
-		*(img + i) = (buf[i] << 5) & 0xE0E0;
-		csum += *(img + i);
+	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 csum;
+
+	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->rotation == 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);
+
+	for (;;) {
+		if (likely(!check_err(par))) {
+			metronome_display_cmd(par);
+			break;
+		}
+
+		par->board->set_stdby(par, 0);
+		dev_warn(&par->pdev->dev, "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);
+	}
+
+	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)
 {
-	u16 cksum;
-	struct page *cur;
-	struct fb_deferred_io *fbdefio = info->fbdefio;
 	struct metronomefb_par *par = info->par;
 
-	/* walk the written page list and swizzle the data */
-	list_for_each_entry(cur, &fbdefio->pagelist, lru) {
-		cksum = metronomefb_dpy_update_page(par,
-					(cur->index << PAGE_SHIFT));
-		par->metromem_img_csum -= par->csum_table[cur->index];
-		par->csum_table[cur->index] = cksum;
-		par->metromem_img_csum += cksum;
-	}
-
-	metronome_display_cmd(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,
@@ -488,8 +745,10 @@ static void metronomefb_fillrect(struct
 {
 	struct metronomefb_par *par = info->par;
 
+	mutex_lock(&par->lock);
 	sys_fillrect(info, rect);
-	metronomefb_dpy_update(par);
+	metronomefb_dpy_update(par, 0);
+	mutex_unlock(&par->lock);
 }
 
 static void metronomefb_copyarea(struct fb_info *info,
@@ -497,8 +756,10 @@ static void metronomefb_copyarea(struct
 {
 	struct metronomefb_par *par = info->par;
 
+	mutex_lock(&par->lock);
 	sys_copyarea(info, area);
-	metronomefb_dpy_update(par);
+	metronomefb_dpy_update(par, 0);
+	mutex_unlock(&par->lock);
 }
 
 static void metronomefb_imageblit(struct fb_info *info,
@@ -506,8 +767,10 @@ static void metronomefb_imageblit(struct
 {
 	struct metronomefb_par *par = info->par;
 
+	mutex_lock(&par->lock);
 	sys_imageblit(info, image);
-	metronomefb_dpy_update(par);
+	metronomefb_dpy_update(par, 0);
+	mutex_unlock(&par->lock);
 }
 
 /*
@@ -545,30 +808,229 @@ static ssize_t metronomefb_write(struct
 
 	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);
+	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;
+
+	var->grayscale = 1;
+
+	switch (par->rotation) {
+	case FB_ROTATE_CW:
+	case FB_ROTATE_CCW:
+		if (par->epd_frame->fw == var->yres && par->epd_frame->fh == var->xres)
+			return 0;
+		break;
+	case FB_ROTATE_UD:
+	default:
+		if (par->epd_frame->fw == var->xres && par->epd_frame->fh == var->yres)
+			return 0;
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static int metronomefb_set_par(struct fb_info *info)
+{
+	struct metronomefb_par *par = info->par;
+
+	par->rotation = (par->board->panel_rotation + info->var.rotate) % 4;
+
+	switch (par->rotation) {
+	case FB_ROTATE_CW:
+	case FB_ROTATE_CCW:
+		info->fix.line_length = par->epd_frame->fh;
+		break;
+	case FB_ROTATE_UD:
+	default:
+		info->fix.line_length = par->epd_frame->fw;
+		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,
+	.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;
@@ -607,6 +1069,9 @@ static int __devinit metronomefb_probe(s
 
 	panel_type = board->get_panel_type();
 	switch (panel_type) {
+	case 5:
+		epd_dt_index = 3;
+		break;
 	case 6:
 		epd_dt_index = 0;
 		break;
@@ -632,29 +1097,59 @@ static int __devinit metronomefb_probe(s
 	if (!videomemory)
 		goto err_fb_rel;
 
-	memset(videomemory, 0, videomemorysize);
+	memset(videomemory, 0xff, videomemorysize);
 
 	info->screen_base = (char __force __iomem *)videomemory;
 	info->fbops = &metronomefb_ops;
 
-	metronomefb_fix.line_length = fw;
-	metronomefb_var.xres = fw;
-	metronomefb_var.yres = fh;
-	metronomefb_var.xres_virtual = fw;
-	metronomefb_var.yres_virtual = fh;
 	info->var = metronomefb_var;
 	info->fix = metronomefb_fix;
-	info->fix.smem_len = videomemorysize;
+	switch (board->panel_rotation) {
+	case FB_ROTATE_CW:
+	case FB_ROTATE_CCW:
+		info->var.xres = fh;
+		info->var.yres = fw;
+		info->var.xres_virtual = fh;
+		info->var.yres_virtual = fw;
+		info->fix.line_length = fh;
+		break;
+	case FB_ROTATE_UD:
+	default:
+		info->var.xres = fw;
+		info->var.yres = fh;
+		info->var.xres_virtual = fw;
+		info->var.yres_virtual = fh;
+		info->fix.line_length = fw;
+		break;
+	}
+	info->fix.smem_len = fw * fh; /* Real size of image area */
 	par = info->par;
 	par->info = info;
 	par->board = board;
-	par->dt = epd_dt_index;
+	par->epd_frame = &epd_frame_table[epd_dt_index];
+	par->pdev = dev;
+
+	par->rotation = board->panel_rotation;
+
+	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 = DEFAULT_MANUAL_REFRESH_THRESHOLD;
+	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_vfree;
+		goto err_fybuckets;
 
 	/* the physical framebuffer that we use is setup by
 	 * the platform device driver. It will provide us
@@ -684,13 +1179,19 @@ static int __devinit metronomefb_probe(s
 		goto err_csum_table;
 	}
 
-	retval = load_waveform((u8 *) fw_entry->data, fw_entry->size, 3, 31,
+	retval = load_waveform((u8 *) fw_entry->data, fw_entry->size, WF_MODE_GC, temp,
 				par);
-	release_firmware(fw_entry);
 	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;
@@ -712,7 +1213,7 @@ static int __devinit metronomefb_probe(s
 
 	/* set cmap */
 	for (i = 0; i < 8; i++)
-		info->cmap.red[i] = (((2*i)+1)*(0xFFFF))/16;
+		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);
 
@@ -722,18 +1223,47 @@ static int __devinit metronomefb_probe(s
 
 	platform_set_drvdata(dev, info);
 
-	dev_dbg(&dev->dev,
+	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:
@@ -750,26 +1280,76 @@ static int __devexit metronomefb_remove(
 	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 = {
-	.probe	= metronomefb_probe,
-	.remove = metronomefb_remove,
-	.driver	= {
-		.owner	= THIS_MODULE,
-		.name	= "metronomefb",
-	},
+	.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)
@@ -782,8 +1362,8 @@ static void __exit metronomefb_exit(void
 	platform_driver_unregister(&metronomefb_driver);
 }
 
-module_param(user_wfm_size, uint, 0);
-MODULE_PARM_DESC(user_wfm_size, "Set custom waveform size");
+module_param(temp, int, 0);
+MODULE_PARM_DESC(temp, "Set current temperature");
 
 module_init(metronomefb_init);
 module_exit(metronomefb_exit);
--- a/include/video/metronomefb.h
+++ b/include/video/metronomefb.h
@@ -17,7 +17,9 @@ struct metromem_cmd {
 	u16 opcode;
 	u16 args[((64-2)/2)];
 	u16 csum;
-};
+} __attribute__((packed));
+
+struct epd_frame;
 
 /* struct used by metronome. board specific stuff comes from *board */
 struct metronomefb_par {
@@ -27,19 +29,40 @@ struct metronomefb_par {
 	u16 *metromem_img_csum;
 	u16 *csum_table;
 	dma_addr_t metromem_dma;
+	const struct firmware *firmware;
 	struct fb_info *info;
 	struct metronome_board *board;
+	struct platform_device *pdev;
 	wait_queue_head_t waitq;
 	u8 frame_count;
 	int extra_size;
-	int dt;
+	int current_wf_mode;
+	int current_wf_temp;
+	unsigned int manual_refresh_threshold;
+	unsigned int partial_autorefresh_interval;
+	const struct epd_frame *epd_frame;
+	u32 *fxbuckets;
+	u32 *fybuckets;
+
+	int rotation;
+
+	unsigned int partial_updates_count;
+	unsigned is_first_update:1;
+
+	struct mutex lock;
 };
 
+#define METRONOME_POWER_OFF	0
+#define METRONOME_POWER_ON	1
+
 /* board specific routines and data */
 struct metronome_board {
 	struct module *owner; /* the platform device */
+	void (*power_ctl)(struct metronomefb_par *, int);
 	void (*set_rst)(struct metronomefb_par *, int);
 	void (*set_stdby)(struct metronomefb_par *, int);
+	int (*get_err)(struct metronomefb_par *);
+	int (*get_rdy)(struct metronomefb_par *);
 	void (*cleanup)(struct metronomefb_par *);
 	int (*met_wait_event)(struct metronomefb_par *);
 	int (*met_wait_event_intr)(struct metronomefb_par *);
@@ -47,11 +70,7 @@ struct metronome_board {
 	int (*setup_fb)(struct metronomefb_par *);
 	int (*setup_io)(struct metronomefb_par *);
 	int (*get_panel_type)(void);
-	unsigned char *metromem;
-	int fw;
-	int fh;
-	int wfm_size;
-	struct fb_info *host_fbinfo; /* the host LCD controller's fbi */
+	int panel_rotation;
 };
 
 #endif