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From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
To: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org,
	Heiko =?ISO-8859-1?Q?St=FCbner?= <heiko@sntech.de>
Subject: [PATCH] video: fbdev: remove unused auo_k190xfb drivers
Date: Fri, 27 Apr 2018 13:04:24 +0200
Message-id: <6386409.PTMV4p8OHo@amdc3058>
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auo_k1900fb and auo_k1901fb drivers have been introduced six
years ago by following commits:

commit 2c8304d3125b ("video: auo_k190x: add code shared by controller drivers")
commit 96b1d500e028 ("video: auo_k190x: add driver for AUO-K1900 variant")
commit 53027cdf2a67 ("video: auo_k190x: add driver for AUO-K1901 variant")

They never had any in-kernel user so just remove them (since
they are platform drivers they need corresponding platform
devices to be registered by kernel and it has never happened).

Cc: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
---
 drivers/video/fbdev/Kconfig       |   33 -
 drivers/video/fbdev/Makefile      |    3 
 drivers/video/fbdev/auo_k1900fb.c |  204 ------
 drivers/video/fbdev/auo_k1901fb.c |  257 --------
 drivers/video/fbdev/auo_k190x.c   | 1190 --------------------------------------
 drivers/video/fbdev/auo_k190x.h   |  129 ----
 include/video/auo_k190xfb.h       |  107 ---
 7 files changed, 1923 deletions(-)


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Index: b/drivers/video/fbdev/Kconfig
===================================================================
--- a/drivers/video/fbdev/Kconfig	2018-04-26 14:54:03.656207576 +0200
+++ b/drivers/video/fbdev/Kconfig	2018-04-26 15:23:47.772252506 +0200
@@ -2253,39 +2253,6 @@ config FB_BROADSHEET
 	  and could also have been called by other names when coupled with
 	  a bridge adapter.
 
-config FB_AUO_K190X
-	tristate "AUO-K190X EPD controller support"
-	depends on FB
-	select FB_SYS_FILLRECT
-	select FB_SYS_COPYAREA
-	select FB_SYS_IMAGEBLIT
-	select FB_SYS_FOPS
-	select FB_DEFERRED_IO
-	help
-	  Provides support for epaper controllers from the K190X series
-	  of AUO. These controllers can be used to drive epaper displays
-	  from Sipix.
-
-	  This option enables the common support, shared by the individual
-	  controller drivers. You will also have to enable the driver
-	  for the controller type used in your device.
-
-config FB_AUO_K1900
-	tristate "AUO-K1900 EPD controller support"
-	depends on FB && FB_AUO_K190X
-	help
-	  This driver implements support for the AUO K1900 epd-controller.
-	  This controller can drive Sipix epaper displays but can only do
-	  serial updates, reducing the number of possible frames per second.
-
-config FB_AUO_K1901
-	tristate "AUO-K1901 EPD controller support"
-	depends on FB && FB_AUO_K190X
-	help
-	  This driver implements support for the AUO K1901 epd-controller.
-	  This controller can drive Sipix epaper displays and supports
-	  concurrent updates, making higher frames per second possible.
-
 config FB_JZ4740
 	tristate "JZ4740 LCD framebuffer support"
 	depends on FB && MACH_JZ4740
Index: b/drivers/video/fbdev/Makefile
===================================================================
--- a/drivers/video/fbdev/Makefile	2018-04-24 16:53:10.043083317 +0200
+++ b/drivers/video/fbdev/Makefile	2018-04-26 15:25:42.128255386 +0200
@@ -100,9 +100,6 @@ obj-$(CONFIG_FB_PMAGB_B)	  += pmagb-b-fb
 obj-$(CONFIG_FB_MAXINE)		  += maxinefb.o
 obj-$(CONFIG_FB_METRONOME)        += metronomefb.o
 obj-$(CONFIG_FB_BROADSHEET)       += broadsheetfb.o
-obj-$(CONFIG_FB_AUO_K190X)	  += auo_k190x.o
-obj-$(CONFIG_FB_AUO_K1900)	  += auo_k1900fb.o
-obj-$(CONFIG_FB_AUO_K1901)	  += auo_k1901fb.o
 obj-$(CONFIG_FB_S1D13XXX)	  += s1d13xxxfb.o
 obj-$(CONFIG_FB_SH7760)		  += sh7760fb.o
 obj-$(CONFIG_FB_IMX)              += imxfb.o
Index: b/drivers/video/fbdev/auo_k1900fb.c
===================================================================
--- a/drivers/video/fbdev/auo_k1900fb.c	2017-10-18 14:35:21.947448311 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,204 +0,0 @@
-/*
- * auok190xfb.c -- FB driver for AUO-K1900 controllers
- *
- * Copyright (C) 2011, 2012 Heiko Stuebner <heiko@sntech.de>
- *
- * based on broadsheetfb.c
- *
- * Copyright (C) 2008, Jaya Kumar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
- *
- * This driver is written to be used with the AUO-K1900 display controller.
- *
- * It is intended to be architecture independent. A board specific driver
- * must be used to perform all the physical IO interactions.
- *
- * The controller supports different update modes:
- * mode0+1 16 step gray (4bit)
- * mode2 4 step gray (2bit) - FIXME: add strange refresh
- * mode3 2 step gray (1bit) - FIXME: add strange refresh
- * mode4 handwriting mode (strange behaviour)
- * mode5 automatic selection of update mode
- */
-
-#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/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/gpio.h>
-#include <linux/pm_runtime.h>
-
-#include <video/auo_k190xfb.h>
-
-#include "auo_k190x.h"
-
-/*
- * AUO-K1900 specific commands
- */
-
-#define AUOK1900_CMD_PARTIALDISP	0x1001
-#define AUOK1900_CMD_ROTATION		0x1006
-#define AUOK1900_CMD_LUT_STOP		0x1009
-
-#define AUOK1900_INIT_TEMP_AVERAGE	(1 << 13)
-#define AUOK1900_INIT_ROTATE(_x)	((_x & 0x3) << 10)
-#define AUOK1900_INIT_RESOLUTION(_res)	((_res & 0x7) << 2)
-
-static void auok1900_init(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	struct auok190x_board *board = par->board;
-	u16 init_param = 0;
-
-	pm_runtime_get_sync(dev);
-
-	init_param |= AUOK1900_INIT_TEMP_AVERAGE;
-	init_param |= AUOK1900_INIT_ROTATE(par->rotation);
-	init_param |= AUOK190X_INIT_INVERSE_WHITE;
-	init_param |= AUOK190X_INIT_FORMAT0;
-	init_param |= AUOK1900_INIT_RESOLUTION(par->resolution);
-	init_param |= AUOK190X_INIT_SHIFT_RIGHT;
-
-	auok190x_send_cmdargs(par, AUOK190X_CMD_INIT, 1, &init_param);
-
-	/* let the controller finish */
-	board->wait_for_rdy(par);
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1900_update_region(struct auok190xfb_par *par, int mode,
-						u16 y1, u16 y2)
-{
-	struct device *dev = par->info->device;
-	unsigned char *buf = (unsigned char *)par->info->screen_base;
-	int xres = par->info->var.xres;
-	int line_length = par->info->fix.line_length;
-	u16 args[4];
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	/* y1 and y2 must be a multiple of 2 so drop the lowest bit */
-	y1 &= 0xfffe;
-	y2 &= 0xfffe;
-
-	dev_dbg(dev, "update (x,y,w,h,mode)=(%d,%d,%d,%d,%d)\n",
-		1, y1+1, xres, y2-y1, mode);
-
-	/* to FIX handle different partial update modes */
-	args[0] = mode | 1;
-	args[1] = y1 + 1;
-	args[2] = xres;
-	args[3] = y2 - y1;
-	buf += y1 * line_length;
-	auok190x_send_cmdargs_pixels(par, AUOK1900_CMD_PARTIALDISP, 4, args,
-				     ((y2 - y1) * line_length)/2, (u16 *) buf);
-	auok190x_send_command(par, AUOK190X_CMD_DATA_STOP);
-
-	par->update_cnt++;
-
-	mutex_unlock(&(par->io_lock));
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1900fb_dpy_update_pages(struct auok190xfb_par *par,
-						u16 y1, u16 y2)
-{
-	int mode;
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(1);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1900_update_region(par, mode, y1, y2);
-}
-
-static void auok1900fb_dpy_update(struct auok190xfb_par *par)
-{
-	int mode;
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(0);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1900_update_region(par, mode, 0, par->info->var.yres);
-	par->update_cnt = 0;
-}
-
-static bool auok1900fb_need_refresh(struct auok190xfb_par *par)
-{
-	return (par->update_cnt > 10);
-}
-
-static int auok1900fb_probe(struct platform_device *pdev)
-{
-	struct auok190x_init_data init;
-	struct auok190x_board *board;
-
-	/* pick up board specific routines */
-	board = pdev->dev.platform_data;
-	if (!board)
-		return -EINVAL;
-
-	/* fill temporary init struct for common init */
-	init.id = "auo_k1900fb";
-	init.board = board;
-	init.update_partial = auok1900fb_dpy_update_pages;
-	init.update_all = auok1900fb_dpy_update;
-	init.need_refresh = auok1900fb_need_refresh;
-	init.init = auok1900_init;
-
-	return auok190x_common_probe(pdev, &init);
-}
-
-static int auok1900fb_remove(struct platform_device *pdev)
-{
-	return auok190x_common_remove(pdev);
-}
-
-static struct platform_driver auok1900fb_driver = {
-	.probe	= auok1900fb_probe,
-	.remove = auok1900fb_remove,
-	.driver	= {
-		.name	= "auo_k1900fb",
-		.pm = &auok190x_pm,
-	},
-};
-module_platform_driver(auok1900fb_driver);
-
-MODULE_DESCRIPTION("framebuffer driver for the AUO-K1900 EPD controller");
-MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
-MODULE_LICENSE("GPL");
Index: b/drivers/video/fbdev/auo_k1901fb.c
===================================================================
--- a/drivers/video/fbdev/auo_k1901fb.c	2017-10-18 14:35:21.947448311 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,257 +0,0 @@
-/*
- * auok190xfb.c -- FB driver for AUO-K1901 controllers
- *
- * Copyright (C) 2011, 2012 Heiko Stuebner <heiko@sntech.de>
- *
- * based on broadsheetfb.c
- *
- * Copyright (C) 2008, Jaya Kumar
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
- *
- * This driver is written to be used with the AUO-K1901 display controller.
- *
- * It is intended to be architecture independent. A board specific driver
- * must be used to perform all the physical IO interactions.
- *
- * The controller supports different update modes:
- * mode0+1 16 step gray (4bit)
- * mode2+3 4 step gray (2bit)
- * mode4+5 2 step gray (1bit)
- * - mode4 is described as "without LUT"
- * mode7 automatic selection of update mode
- *
- * The most interesting difference to the K1900 is the ability to do screen
- * updates in an asynchronous fashion. Where the K1900 needs to wait for the
- * current update to complete, the K1901 can process later updates already.
- */
-
-#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/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/gpio.h>
-#include <linux/pm_runtime.h>
-
-#include <video/auo_k190xfb.h>
-
-#include "auo_k190x.h"
-
-/*
- * AUO-K1901 specific commands
- */
-
-#define AUOK1901_CMD_LUT_INTERFACE	0x0005
-#define AUOK1901_CMD_DMA_START		0x1001
-#define AUOK1901_CMD_CURSOR_START	0x1007
-#define AUOK1901_CMD_CURSOR_STOP	AUOK190X_CMD_DATA_STOP
-#define AUOK1901_CMD_DDMA_START		0x1009
-
-#define AUOK1901_INIT_GATE_PULSE_LOW	(0 << 14)
-#define AUOK1901_INIT_GATE_PULSE_HIGH	(1 << 14)
-#define AUOK1901_INIT_SINGLE_GATE	(0 << 13)
-#define AUOK1901_INIT_DOUBLE_GATE	(1 << 13)
-
-/* Bits to pixels
- *   Mode	15-12	11-8	7-4	3-0
- *   format2	2	T	1	T
- *   format3	1	T	2	T
- *   format4	T	2	T	1
- *   format5	T	1	T	2
- *
- *   halftone modes:
- *   format6	2	2	1	1
- *   format7	1	1	2	2
- */
-#define AUOK1901_INIT_FORMAT2		(1 << 7)
-#define AUOK1901_INIT_FORMAT3		((1 << 7) | (1 << 6))
-#define AUOK1901_INIT_FORMAT4		(1 << 8)
-#define AUOK1901_INIT_FORMAT5		((1 << 8) | (1 << 6))
-#define AUOK1901_INIT_FORMAT6		((1 << 8) | (1 << 7))
-#define AUOK1901_INIT_FORMAT7		((1 << 8) | (1 << 7) | (1 << 6))
-
-/* res[4] to bit 10
- * res[3-0] to bits 5-2
- */
-#define AUOK1901_INIT_RESOLUTION(_res)	(((_res & (1 << 4)) << 6) \
-					 | ((_res & 0xf) << 2))
-
-/*
- * portrait / landscape orientation in AUOK1901_CMD_DMA_START
- */
-#define AUOK1901_DMA_ROTATE90(_rot)		((_rot & 1) << 13)
-
-/*
- * equivalent to 1 << 11, needs the ~ to have same rotation like K1900
- */
-#define AUOK1901_DDMA_ROTATE180(_rot)		((~_rot & 2) << 10)
-
-static void auok1901_init(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	struct auok190x_board *board = par->board;
-	u16 init_param = 0;
-
-	pm_runtime_get_sync(dev);
-
-	init_param |= AUOK190X_INIT_INVERSE_WHITE;
-	init_param |= AUOK190X_INIT_FORMAT0;
-	init_param |= AUOK1901_INIT_RESOLUTION(par->resolution);
-	init_param |= AUOK190X_INIT_SHIFT_LEFT;
-
-	auok190x_send_cmdargs(par, AUOK190X_CMD_INIT, 1, &init_param);
-
-	/* let the controller finish */
-	board->wait_for_rdy(par);
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1901_update_region(struct auok190xfb_par *par, int mode,
-						u16 y1, u16 y2)
-{
-	struct device *dev = par->info->device;
-	unsigned char *buf = (unsigned char *)par->info->screen_base;
-	int xres = par->info->var.xres;
-	int line_length = par->info->fix.line_length;
-	u16 args[5];
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	/* y1 and y2 must be a multiple of 2 so drop the lowest bit */
-	y1 &= 0xfffe;
-	y2 &= 0xfffe;
-
-	dev_dbg(dev, "update (x,y,w,h,mode)=(%d,%d,%d,%d,%d)\n",
-		1, y1+1, xres, y2-y1, mode);
-
-	/* K1901: first transfer the region data */
-	args[0] = AUOK1901_DMA_ROTATE90(par->rotation) | 1;
-	args[1] = y1 + 1;
-	args[2] = xres;
-	args[3] = y2 - y1;
-	buf += y1 * line_length;
-	auok190x_send_cmdargs_pixels_nowait(par, AUOK1901_CMD_DMA_START, 4,
-					    args, ((y2 - y1) * line_length)/2,
-					    (u16 *) buf);
-	auok190x_send_command_nowait(par, AUOK190X_CMD_DATA_STOP);
-
-	/* K1901: second tell the controller to update the region with mode */
-	args[0] = mode | AUOK1901_DDMA_ROTATE180(par->rotation);
-	args[1] = 1;
-	args[2] = y1 + 1;
-	args[3] = xres;
-	args[4] = y2 - y1;
-	auok190x_send_cmdargs_nowait(par, AUOK1901_CMD_DDMA_START, 5, args);
-
-	par->update_cnt++;
-
-	mutex_unlock(&(par->io_lock));
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-static void auok1901fb_dpy_update_pages(struct auok190xfb_par *par,
-						u16 y1, u16 y2)
-{
-	int mode;
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(1);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1901_update_region(par, mode, y1, y2);
-}
-
-static void auok1901fb_dpy_update(struct auok190xfb_par *par)
-{
-	int mode;
-
-	/* When doing full updates, wait for the controller to be ready
-	 * This will hopefully catch some hangs of the K1901
-	 */
-	par->board->wait_for_rdy(par);
-
-	if (par->update_mode < 0) {
-		mode = AUOK190X_UPDATE_MODE(0);
-		par->last_mode = -1;
-	} else {
-		mode = AUOK190X_UPDATE_MODE(par->update_mode);
-		par->last_mode = par->update_mode;
-	}
-
-	if (par->flash)
-		mode |= AUOK190X_UPDATE_NONFLASH;
-
-	auok1901_update_region(par, mode, 0, par->info->var.yres);
-	par->update_cnt = 0;
-}
-
-static bool auok1901fb_need_refresh(struct auok190xfb_par *par)
-{
-	return (par->update_cnt > 10);
-}
-
-static int auok1901fb_probe(struct platform_device *pdev)
-{
-	struct auok190x_init_data init;
-	struct auok190x_board *board;
-
-	/* pick up board specific routines */
-	board = pdev->dev.platform_data;
-	if (!board)
-		return -EINVAL;
-
-	/* fill temporary init struct for common init */
-	init.id = "auo_k1901fb";
-	init.board = board;
-	init.update_partial = auok1901fb_dpy_update_pages;
-	init.update_all = auok1901fb_dpy_update;
-	init.need_refresh = auok1901fb_need_refresh;
-	init.init = auok1901_init;
-
-	return auok190x_common_probe(pdev, &init);
-}
-
-static int auok1901fb_remove(struct platform_device *pdev)
-{
-	return auok190x_common_remove(pdev);
-}
-
-static struct platform_driver auok1901fb_driver = {
-	.probe	= auok1901fb_probe,
-	.remove = auok1901fb_remove,
-	.driver	= {
-		.name	= "auo_k1901fb",
-		.pm = &auok190x_pm,
-	},
-};
-module_platform_driver(auok1901fb_driver);
-
-MODULE_DESCRIPTION("framebuffer driver for the AUO-K1901 EPD controller");
-MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
-MODULE_LICENSE("GPL");
Index: b/drivers/video/fbdev/auo_k190x.c
===================================================================
--- a/drivers/video/fbdev/auo_k190x.c	2018-04-26 14:54:03.672207576 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,1190 +0,0 @@
-/*
- * Common code for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <heiko@sntech.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/sched/mm.h>
-#include <linux/kernel.h>
-#include <linux/gpio.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/fb.h>
-#include <linux/delay.h>
-#include <linux/uaccess.h>
-#include <linux/vmalloc.h>
-#include <linux/regulator/consumer.h>
-
-#include <video/auo_k190xfb.h>
-
-#include "auo_k190x.h"
-
-struct panel_info {
-	int w;
-	int h;
-};
-
-/* table of panel specific parameters to be indexed into by the board drivers */
-static struct panel_info panel_table[] = {
-	/* standard 6" */
-	[AUOK190X_RESOLUTION_800_600] = {
-		.w = 800,
-		.h = 600,
-	},
-	/* standard 9" */
-	[AUOK190X_RESOLUTION_1024_768] = {
-		.w = 1024,
-		.h = 768,
-	},
-	[AUOK190X_RESOLUTION_600_800] = {
-		.w = 600,
-		.h = 800,
-	},
-	[AUOK190X_RESOLUTION_768_1024] = {
-		.w = 768,
-		.h = 1024,
-	},
-};
-
-/*
- * private I80 interface to the board driver
- */
-
-static void auok190x_issue_data(struct auok190xfb_par *par, u16 data)
-{
-	par->board->set_ctl(par, AUOK190X_I80_WR, 0);
-	par->board->set_hdb(par, data);
-	par->board->set_ctl(par, AUOK190X_I80_WR, 1);
-}
-
-static void auok190x_issue_cmd(struct auok190xfb_par *par, u16 data)
-{
-	par->board->set_ctl(par, AUOK190X_I80_DC, 0);
-	auok190x_issue_data(par, data);
-	par->board->set_ctl(par, AUOK190X_I80_DC, 1);
-}
-
-/**
- * Conversion of 16bit color to 4bit grayscale
- * does roughly (0.3 * R + 0.6 G + 0.1 B) / 2
- */
-static inline int rgb565_to_gray4(u16 data, struct fb_var_screeninfo *var)
-{
-	return ((((data & 0xF800) >> var->red.offset) * 77 +
-		 ((data & 0x07E0) >> (var->green.offset + 1)) * 151 +
-		 ((data & 0x1F) >> var->blue.offset) * 28) >> 8 >> 1);
-}
-
-static int auok190x_issue_pixels_rgb565(struct auok190xfb_par *par, int size,
-					u16 *data)
-{
-	struct fb_var_screeninfo *var = &par->info->var;
-	struct device *dev = par->info->device;
-	int i;
-	u16 tmp;
-
-	if (size & 7) {
-		dev_err(dev, "issue_pixels: size %d must be a multiple of 8\n",
-			size);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < (size >> 2); i++) {
-		par->board->set_ctl(par, AUOK190X_I80_WR, 0);
-
-		tmp  = (rgb565_to_gray4(data[4*i], var) & 0x000F);
-		tmp |= (rgb565_to_gray4(data[4*i+1], var) << 4) & 0x00F0;
-		tmp |= (rgb565_to_gray4(data[4*i+2], var) << 8) & 0x0F00;
-		tmp |= (rgb565_to_gray4(data[4*i+3], var) << 12) & 0xF000;
-
-		par->board->set_hdb(par, tmp);
-		par->board->set_ctl(par, AUOK190X_I80_WR, 1);
-	}
-
-	return 0;
-}
-
-static int auok190x_issue_pixels_gray8(struct auok190xfb_par *par, int size,
-				       u16 *data)
-{
-	struct device *dev = par->info->device;
-	int i;
-	u16 tmp;
-
-	if (size & 3) {
-		dev_err(dev, "issue_pixels: size %d must be a multiple of 4\n",
-			size);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < (size >> 1); i++) {
-		par->board->set_ctl(par, AUOK190X_I80_WR, 0);
-
-		/* simple reduction of 8bit staticgray to 4bit gray
-		 * combines 4 * 4bit pixel values into a 16bit value
-		 */
-		tmp  = (data[2*i] & 0xF0) >> 4;
-		tmp |= (data[2*i] & 0xF000) >> 8;
-		tmp |= (data[2*i+1] & 0xF0) << 4;
-		tmp |= (data[2*i+1] & 0xF000);
-
-		par->board->set_hdb(par, tmp);
-		par->board->set_ctl(par, AUOK190X_I80_WR, 1);
-	}
-
-	return 0;
-}
-
-static int auok190x_issue_pixels(struct auok190xfb_par *par, int size,
-				 u16 *data)
-{
-	struct fb_info *info = par->info;
-	struct device *dev = par->info->device;
-
-	if (info->var.bits_per_pixel == 8 && info->var.grayscale)
-		auok190x_issue_pixels_gray8(par, size, data);
-	else if (info->var.bits_per_pixel == 16)
-		auok190x_issue_pixels_rgb565(par, size, data);
-	else
-		dev_err(dev, "unsupported color mode (bits: %d, gray: %d)\n",
-			info->var.bits_per_pixel, info->var.grayscale);
-
-	return 0;
-}
-
-static u16 auok190x_read_data(struct auok190xfb_par *par)
-{
-	u16 data;
-
-	par->board->set_ctl(par, AUOK190X_I80_OE, 0);
-	data = par->board->get_hdb(par);
-	par->board->set_ctl(par, AUOK190X_I80_OE, 1);
-
-	return data;
-}
-
-/*
- * Command interface for the controller drivers
- */
-
-void auok190x_send_command_nowait(struct auok190xfb_par *par, u16 data)
-{
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-	auok190x_issue_cmd(par, data);
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-}
-EXPORT_SYMBOL_GPL(auok190x_send_command_nowait);
-
-void auok190x_send_cmdargs_nowait(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv)
-{
-	int i;
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-	auok190x_issue_cmd(par, cmd);
-
-	for (i = 0; i < argc; i++)
-		auok190x_issue_data(par, argv[i]);
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_nowait);
-
-int auok190x_send_command(struct auok190xfb_par *par, u16 data)
-{
-	int ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	auok190x_send_command_nowait(par, data);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_send_command);
-
-int auok190x_send_cmdargs(struct auok190xfb_par *par, u16 cmd,
-			   int argc, u16 *argv)
-{
-	int ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	auok190x_send_cmdargs_nowait(par, cmd, argc, argv);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs);
-
-int auok190x_read_cmdargs(struct auok190xfb_par *par, u16 cmd,
-			   int argc, u16 *argv)
-{
-	int i, ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-	auok190x_issue_cmd(par, cmd);
-
-	for (i = 0; i < argc; i++)
-		argv[i] = auok190x_read_data(par);
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_read_cmdargs);
-
-void auok190x_send_cmdargs_pixels_nowait(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv, int size, u16 *data)
-{
-	int i;
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 0);
-
-	auok190x_issue_cmd(par, cmd);
-
-	for (i = 0; i < argc; i++)
-		auok190x_issue_data(par, argv[i]);
-
-	auok190x_issue_pixels(par, size, data);
-
-	par->board->set_ctl(par, AUOK190X_I80_CS, 1);
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_pixels_nowait);
-
-int auok190x_send_cmdargs_pixels(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv, int size, u16 *data)
-{
-	int ret;
-
-	ret = par->board->wait_for_rdy(par);
-	if (ret)
-		return ret;
-
-	auok190x_send_cmdargs_pixels_nowait(par, cmd, argc, argv, size, data);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_send_cmdargs_pixels);
-
-/*
- * fbdefio callbacks - common on both controllers.
- */
-
-static void auok190xfb_dpy_first_io(struct fb_info *info)
-{
-	/* tell runtime-pm that we wish to use the device in a short time */
-	pm_runtime_get(info->device);
-}
-
-/* this is called back from the deferred io workqueue */
-static void auok190xfb_dpy_deferred_io(struct fb_info *info,
-				struct list_head *pagelist)
-{
-	struct fb_deferred_io *fbdefio = info->fbdefio;
-	struct auok190xfb_par *par = info->par;
-	u16 line_length = info->fix.line_length;
-	u16 yres = info->var.yres;
-	u16 y1 = 0, h = 0;
-	int prev_index = -1;
-	struct page *cur;
-	int h_inc;
-	int threshold;
-
-	if (!list_empty(pagelist))
-		/* the device resume should've been requested through first_io,
-		 * if the resume did not finish until now, wait for it.
-		 */
-		pm_runtime_barrier(info->device);
-	else
-		/* We reached this via the fsync or some other way.
-		 * In either case the first_io function did not run,
-		 * so we runtime_resume the device here synchronously.
-		 */
-		pm_runtime_get_sync(info->device);
-
-	/* Do a full screen update every n updates to prevent
-	 * excessive darkening of the Sipix display.
-	 * If we do this, there is no need to walk the pages.
-	 */
-	if (par->need_refresh(par)) {
-		par->update_all(par);
-		goto out;
-	}
-
-	/* height increment is fixed per page */
-	h_inc = DIV_ROUND_UP(PAGE_SIZE , line_length);
-
-	/* calculate number of pages from pixel height */
-	threshold = par->consecutive_threshold / h_inc;
-	if (threshold < 1)
-		threshold = 1;
-
-	/* walk the written page list and swizzle the data */
-	list_for_each_entry(cur, &fbdefio->pagelist, lru) {
-		if (prev_index < 0) {
-			/* just starting so assign first page */
-			y1 = (cur->index << PAGE_SHIFT) / line_length;
-			h = h_inc;
-		} else if ((cur->index - prev_index) <= threshold) {
-			/* page is within our threshold for single updates */
-			h += h_inc * (cur->index - prev_index);
-		} else {
-			/* page not consecutive, issue previous update first */
-			par->update_partial(par, y1, y1 + h);
-
-			/* start over with our non consecutive page */
-			y1 = (cur->index << PAGE_SHIFT) / line_length;
-			h = h_inc;
-		}
-		prev_index = cur->index;
-	}
-
-	/* if we still have any pages to update we do so now */
-	if (h >= yres)
-		/* its a full screen update, just do it */
-		par->update_all(par);
-	else
-		par->update_partial(par, y1, min((u16) (y1 + h), yres));
-
-out:
-	pm_runtime_mark_last_busy(info->device);
-	pm_runtime_put_autosuspend(info->device);
-}
-
-/*
- * framebuffer operations
- */
-
-/*
- * this is the slow path from userspace. they can seek and write to
- * the fb. it's inefficient to do anything less than a full screen draw
- */
-static ssize_t auok190xfb_write(struct fb_info *info, const char __user *buf,
-				size_t count, loff_t *ppos)
-{
-	struct auok190xfb_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 *)(info->screen_base + p);
-
-	if (copy_from_user(dst, buf, count))
-		err = -EFAULT;
-
-	if  (!err)
-		*ppos += count;
-
-	par->update_all(par);
-
-	return (err) ? err : count;
-}
-
-static void auok190xfb_fillrect(struct fb_info *info,
-				   const struct fb_fillrect *rect)
-{
-	struct auok190xfb_par *par = info->par;
-
-	sys_fillrect(info, rect);
-
-	par->update_all(par);
-}
-
-static void auok190xfb_copyarea(struct fb_info *info,
-				   const struct fb_copyarea *area)
-{
-	struct auok190xfb_par *par = info->par;
-
-	sys_copyarea(info, area);
-
-	par->update_all(par);
-}
-
-static void auok190xfb_imageblit(struct fb_info *info,
-				const struct fb_image *image)
-{
-	struct auok190xfb_par *par = info->par;
-
-	sys_imageblit(info, image);
-
-	par->update_all(par);
-}
-
-static int auok190xfb_check_var(struct fb_var_screeninfo *var,
-				   struct fb_info *info)
-{
-	struct device *dev = info->device;
-	struct auok190xfb_par *par = info->par;
-	struct panel_info *panel = &panel_table[par->resolution];
-	int size;
-
-	/*
-	 * Color depth
-	 */
-
-	if (var->bits_per_pixel == 8 && var->grayscale == 1) {
-		/*
-		 * For 8-bit grayscale, R, G, and B offset are equal.
-		 */
-		var->red.length = 8;
-		var->red.offset = 0;
-		var->red.msb_right = 0;
-
-		var->green.length = 8;
-		var->green.offset = 0;
-		var->green.msb_right = 0;
-
-		var->blue.length = 8;
-		var->blue.offset = 0;
-		var->blue.msb_right = 0;
-
-		var->transp.length = 0;
-		var->transp.offset = 0;
-		var->transp.msb_right = 0;
-	} else if (var->bits_per_pixel == 16) {
-		var->red.length = 5;
-		var->red.offset = 11;
-		var->red.msb_right = 0;
-
-		var->green.length = 6;
-		var->green.offset = 5;
-		var->green.msb_right = 0;
-
-		var->blue.length = 5;
-		var->blue.offset = 0;
-		var->blue.msb_right = 0;
-
-		var->transp.length = 0;
-		var->transp.offset = 0;
-		var->transp.msb_right = 0;
-	} else {
-		dev_warn(dev, "unsupported color mode (bits: %d, grayscale: %d)\n",
-			info->var.bits_per_pixel, info->var.grayscale);
-		return -EINVAL;
-	}
-
-	/*
-	 * Dimensions
-	 */
-
-	switch (var->rotate) {
-	case FB_ROTATE_UR:
-	case FB_ROTATE_UD:
-		var->xres = panel->w;
-		var->yres = panel->h;
-		break;
-	case FB_ROTATE_CW:
-	case FB_ROTATE_CCW:
-		var->xres = panel->h;
-		var->yres = panel->w;
-		break;
-	default:
-		dev_dbg(dev, "Invalid rotation request\n");
-		return -EINVAL;
-	}
-
-	var->xres_virtual = var->xres;
-	var->yres_virtual = var->yres;
-
-	/*
-	 *  Memory limit
-	 */
-
-	size = var->xres_virtual * var->yres_virtual * var->bits_per_pixel / 8;
-	if (size > info->fix.smem_len) {
-		dev_err(dev, "Memory limit exceeded, requested %dK\n",
-			size >> 10);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static int auok190xfb_set_fix(struct fb_info *info)
-{
-	struct fb_fix_screeninfo *fix = &info->fix;
-	struct fb_var_screeninfo *var = &info->var;
-
-	fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
-
-	fix->type = FB_TYPE_PACKED_PIXELS;
-	fix->accel = FB_ACCEL_NONE;
-	fix->visual = (var->grayscale) ? FB_VISUAL_STATIC_PSEUDOCOLOR
-				       : FB_VISUAL_TRUECOLOR;
-	fix->xpanstep = 0;
-	fix->ypanstep = 0;
-	fix->ywrapstep = 0;
-
-	return 0;
-}
-
-static int auok190xfb_set_par(struct fb_info *info)
-{
-	struct auok190xfb_par *par = info->par;
-
-	par->rotation = info->var.rotate;
-	auok190xfb_set_fix(info);
-
-	/* reinit the controller to honor the rotation */
-	par->init(par);
-
-	/* wait for init to complete */
-	par->board->wait_for_rdy(par);
-
-	return 0;
-}
-
-static struct fb_ops auok190xfb_ops = {
-	.owner		= THIS_MODULE,
-	.fb_read	= fb_sys_read,
-	.fb_write	= auok190xfb_write,
-	.fb_fillrect	= auok190xfb_fillrect,
-	.fb_copyarea	= auok190xfb_copyarea,
-	.fb_imageblit	= auok190xfb_imageblit,
-	.fb_check_var	= auok190xfb_check_var,
-	.fb_set_par     = auok190xfb_set_par,
-};
-
-/*
- * Controller-functions common to both K1900 and K1901
- */
-
-static int auok190x_read_temperature(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	u16 data[4];
-	int temp;
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	auok190x_read_cmdargs(par, AUOK190X_CMD_READ_VERSION, 4, data);
-
-	mutex_unlock(&(par->io_lock));
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-
-	/* sanitize and split of half-degrees for now */
-	temp = ((data[0] & AUOK190X_VERSION_TEMP_MASK) >> 1);
-
-	/* handle positive and negative temperatures */
-	if (temp >= 201)
-		return (255 - temp + 1) * (-1);
-	else
-		return temp;
-}
-
-static void auok190x_identify(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-	u16 data[4];
-
-	pm_runtime_get_sync(dev);
-
-	mutex_lock(&(par->io_lock));
-
-	auok190x_read_cmdargs(par, AUOK190X_CMD_READ_VERSION, 4, data);
-
-	mutex_unlock(&(par->io_lock));
-
-	par->epd_type = data[1] & AUOK190X_VERSION_TEMP_MASK;
-
-	par->panel_size_int = AUOK190X_VERSION_SIZE_INT(data[2]);
-	par->panel_size_float = AUOK190X_VERSION_SIZE_FLOAT(data[2]);
-	par->panel_model = AUOK190X_VERSION_MODEL(data[2]);
-
-	par->tcon_version = AUOK190X_VERSION_TCON(data[3]);
-	par->lut_version = AUOK190X_VERSION_LUT(data[3]);
-
-	dev_dbg(dev, "panel %d.%din, model 0x%x, EPD 0x%x TCON-rev 0x%x, LUT-rev 0x%x",
-		par->panel_size_int, par->panel_size_float, par->panel_model,
-		par->epd_type, par->tcon_version, par->lut_version);
-
-	pm_runtime_mark_last_busy(dev);
-	pm_runtime_put_autosuspend(dev);
-}
-
-/*
- * Sysfs functions
- */
-
-static ssize_t update_mode_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-
-	return sprintf(buf, "%d\n", par->update_mode);
-}
-
-static ssize_t update_mode_store(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf, size_t count)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	int mode, ret;
-
-	ret = kstrtoint(buf, 10, &mode);
-	if (ret)
-		return ret;
-
-	par->update_mode = mode;
-
-	/* if we enter a better mode, do a full update */
-	if (par->last_mode > 1 && mode < par->last_mode)
-		par->update_all(par);
-
-	return count;
-}
-
-static ssize_t flash_show(struct device *dev, struct device_attribute *attr,
-			  char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-
-	return sprintf(buf, "%d\n", par->flash);
-}
-
-static ssize_t flash_store(struct device *dev, struct device_attribute *attr,
-			   const char *buf, size_t count)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	int flash, ret;
-
-	ret = kstrtoint(buf, 10, &flash);
-	if (ret)
-		return ret;
-
-	if (flash > 0)
-		par->flash = 1;
-	else
-		par->flash = 0;
-
-	return count;
-}
-
-static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
-			 char *buf)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	int temp;
-
-	temp = auok190x_read_temperature(par);
-	return sprintf(buf, "%d\n", temp);
-}
-
-static DEVICE_ATTR_RW(update_mode);
-static DEVICE_ATTR_RW(flash);
-static DEVICE_ATTR(temp, 0644, temp_show, NULL);
-
-static struct attribute *auok190x_attributes[] = {
-	&dev_attr_update_mode.attr,
-	&dev_attr_flash.attr,
-	&dev_attr_temp.attr,
-	NULL
-};
-
-static const struct attribute_group auok190x_attr_group = {
-	.attrs		= auok190x_attributes,
-};
-
-static int auok190x_power(struct auok190xfb_par *par, bool on)
-{
-	struct auok190x_board *board = par->board;
-	int ret;
-
-	if (on) {
-		/* We should maintain POWER up for at least 80ms before set
-		 * RST_N and SLP_N to high (TCON spec 20100803_v35 p59)
-		 */
-		ret = regulator_enable(par->regulator);
-		if (ret)
-			return ret;
-
-		msleep(200);
-		gpio_set_value(board->gpio_nrst, 1);
-		gpio_set_value(board->gpio_nsleep, 1);
-		msleep(200);
-	} else {
-		regulator_disable(par->regulator);
-		gpio_set_value(board->gpio_nrst, 0);
-		gpio_set_value(board->gpio_nsleep, 0);
-	}
-
-	return 0;
-}
-
-/*
- * Recovery - powercycle the controller
- */
-
-static void auok190x_recover(struct auok190xfb_par *par)
-{
-	struct device *dev = par->info->device;
-
-	auok190x_power(par, 0);
-	msleep(100);
-	auok190x_power(par, 1);
-
-	/* after powercycling the device, it's always active */
-	pm_runtime_set_active(dev);
-	par->standby = 0;
-
-	par->init(par);
-
-	/* wait for init to complete */
-	par->board->wait_for_rdy(par);
-}
-
-/*
- * Power-management
- */
-static int __maybe_unused auok190x_runtime_suspend(struct device *dev)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-	u16 standby_param;
-
-	/* take and keep the lock until we are resumed, as the controller
-	 * will never reach the non-busy state when in standby mode
-	 */
-	mutex_lock(&(par->io_lock));
-
-	if (par->standby) {
-		dev_warn(dev, "already in standby, runtime-pm pairing mismatch\n");
-		mutex_unlock(&(par->io_lock));
-		return 0;
-	}
-
-	/* according to runtime_pm.txt runtime_suspend only means, that the
-	 * device will not process data and will not communicate with the CPU
-	 * As we hold the lock, this stays true even without standby
-	 */
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		dev_dbg(dev, "runtime suspend without standby\n");
-		goto finish;
-	} else if (board->quirks & AUOK190X_QUIRK_STANDBYPARAM) {
-		/* for some TCON versions STANDBY expects a parameter (0) but
-		 * it seems the real tcon version has to be determined yet.
-		 */
-		dev_dbg(dev, "runtime suspend with additional empty param\n");
-		standby_param = 0;
-		auok190x_send_cmdargs(par, AUOK190X_CMD_STANDBY, 1,
-				      &standby_param);
-	} else {
-		dev_dbg(dev, "runtime suspend without param\n");
-		auok190x_send_command(par, AUOK190X_CMD_STANDBY);
-	}
-
-	msleep(64);
-
-finish:
-	par->standby = 1;
-
-	return 0;
-}
-
-static int __maybe_unused auok190x_runtime_resume(struct device *dev)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-
-	if (!par->standby) {
-		dev_warn(dev, "not in standby, runtime-pm pairing mismatch\n");
-		return 0;
-	}
-
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		dev_dbg(dev, "runtime resume without standby\n");
-	} else {
-		/* when in standby, controller is always busy
-		 * and only accepts the wakeup command
-		 */
-		dev_dbg(dev, "runtime resume from standby\n");
-		auok190x_send_command_nowait(par, AUOK190X_CMD_WAKEUP);
-
-		msleep(160);
-
-		/* wait for the controller to be ready and release the lock */
-		board->wait_for_rdy(par);
-	}
-
-	par->standby = 0;
-
-	mutex_unlock(&(par->io_lock));
-
-	return 0;
-}
-
-static int __maybe_unused auok190x_suspend(struct device *dev)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-	int ret;
-
-	dev_dbg(dev, "suspend\n");
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		/* suspend via powering off the ic */
-		dev_dbg(dev, "suspend with broken standby\n");
-
-		auok190x_power(par, 0);
-	} else {
-		dev_dbg(dev, "suspend using sleep\n");
-
-		/* the sleep state can only be entered from the standby state.
-		 * pm_runtime_get_noresume gets called before the suspend call.
-		 * So the devices usage count is >0 but it is not necessarily
-		 * active.
-		 */
-		if (!pm_runtime_status_suspended(dev)) {
-			ret = auok190x_runtime_suspend(dev);
-			if (ret < 0) {
-				dev_err(dev, "auok190x_runtime_suspend failed with %d\n",
-					ret);
-				return ret;
-			}
-			par->manual_standby = 1;
-		}
-
-		gpio_direction_output(board->gpio_nsleep, 0);
-	}
-
-	msleep(100);
-
-	return 0;
-}
-
-static int __maybe_unused auok190x_resume(struct device *dev)
-{
-	struct fb_info *info = dev_get_drvdata(dev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-
-	dev_dbg(dev, "resume\n");
-	if (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN) {
-		dev_dbg(dev, "resume with broken standby\n");
-
-		auok190x_power(par, 1);
-
-		par->init(par);
-	} else {
-		dev_dbg(dev, "resume from sleep\n");
-
-		/* device should be in runtime suspend when we were suspended
-		 * and pm_runtime_put_sync gets called after this function.
-		 * So there is no need to touch the standby mode here at all.
-		 */
-		gpio_direction_output(board->gpio_nsleep, 1);
-		msleep(100);
-
-		/* an additional init call seems to be necessary after sleep */
-		auok190x_runtime_resume(dev);
-		par->init(par);
-
-		/* if we were runtime-suspended before, suspend again*/
-		if (!par->manual_standby)
-			auok190x_runtime_suspend(dev);
-		else
-			par->manual_standby = 0;
-	}
-
-	return 0;
-}
-
-const struct dev_pm_ops auok190x_pm = {
-	SET_RUNTIME_PM_OPS(auok190x_runtime_suspend, auok190x_runtime_resume,
-			   NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(auok190x_suspend, auok190x_resume)
-};
-EXPORT_SYMBOL_GPL(auok190x_pm);
-
-/*
- * Common probe and remove code
- */
-
-int auok190x_common_probe(struct platform_device *pdev,
-			  struct auok190x_init_data *init)
-{
-	struct auok190x_board *board = init->board;
-	struct auok190xfb_par *par;
-	struct fb_info *info;
-	struct panel_info *panel;
-	int videomemorysize, ret;
-	unsigned char *videomemory;
-
-	/* check board contents */
-	if (!board->init || !board->cleanup || !board->wait_for_rdy
-	    || !board->set_ctl || !board->set_hdb || !board->get_hdb
-	    || !board->setup_irq)
-		return -EINVAL;
-
-	info = framebuffer_alloc(sizeof(struct auok190xfb_par), &pdev->dev);
-	if (!info)
-		return -ENOMEM;
-
-	par = info->par;
-	par->info = info;
-	par->board = board;
-	par->recover = auok190x_recover;
-	par->update_partial = init->update_partial;
-	par->update_all = init->update_all;
-	par->need_refresh = init->need_refresh;
-	par->init = init->init;
-
-	/* init update modes */
-	par->update_cnt = 0;
-	par->update_mode = -1;
-	par->last_mode = -1;
-	par->flash = 0;
-
-	par->regulator = regulator_get(info->device, "vdd");
-	if (IS_ERR(par->regulator)) {
-		ret = PTR_ERR(par->regulator);
-		dev_err(info->device, "Failed to get regulator: %d\n", ret);
-		goto err_reg;
-	}
-
-	ret = board->init(par);
-	if (ret) {
-		dev_err(info->device, "board init failed, %d\n", ret);
-		goto err_board;
-	}
-
-	ret = gpio_request(board->gpio_nsleep, "AUOK190x sleep");
-	if (ret) {
-		dev_err(info->device, "could not request sleep gpio, %d\n",
-			ret);
-		goto err_gpio1;
-	}
-
-	ret = gpio_direction_output(board->gpio_nsleep, 0);
-	if (ret) {
-		dev_err(info->device, "could not set sleep gpio, %d\n", ret);
-		goto err_gpio2;
-	}
-
-	ret = gpio_request(board->gpio_nrst, "AUOK190x reset");
-	if (ret) {
-		dev_err(info->device, "could not request reset gpio, %d\n",
-			ret);
-		goto err_gpio2;
-	}
-
-	ret = gpio_direction_output(board->gpio_nrst, 0);
-	if (ret) {
-		dev_err(info->device, "could not set reset gpio, %d\n", ret);
-		goto err_gpio3;
-	}
-
-	ret = auok190x_power(par, 1);
-	if (ret) {
-		dev_err(info->device, "could not power on the device, %d\n",
-			ret);
-		goto err_gpio3;
-	}
-
-	mutex_init(&par->io_lock);
-
-	init_waitqueue_head(&par->waitq);
-
-	ret = par->board->setup_irq(par->info);
-	if (ret) {
-		dev_err(info->device, "could not setup ready-irq, %d\n", ret);
-		goto err_irq;
-	}
-
-	/* wait for init to complete */
-	par->board->wait_for_rdy(par);
-
-	/*
-	 * From here on the controller can talk to us
-	 */
-
-	/* initialise fix, var, resolution and rotation */
-
-	strlcpy(info->fix.id, init->id, 16);
-	info->var.bits_per_pixel = 8;
-	info->var.grayscale = 1;
-
-	panel = &panel_table[board->resolution];
-
-	par->resolution = board->resolution;
-	par->rotation = 0;
-
-	/* videomemory handling */
-
-	videomemorysize = roundup((panel->w * panel->h) * 2, PAGE_SIZE);
-	videomemory = vzalloc(videomemorysize);
-	if (!videomemory) {
-		ret = -ENOMEM;
-		goto err_irq;
-	}
-
-	info->screen_base = (char *)videomemory;
-	info->fix.smem_len = videomemorysize;
-
-	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB;
-	info->fbops = &auok190xfb_ops;
-
-	ret = auok190xfb_check_var(&info->var, info);
-	if (ret)
-		goto err_defio;
-
-	auok190xfb_set_fix(info);
-
-	/* deferred io init */
-
-	info->fbdefio = devm_kzalloc(info->device,
-				     sizeof(struct fb_deferred_io),
-				     GFP_KERNEL);
-	if (!info->fbdefio) {
-		ret = -ENOMEM;
-		goto err_defio;
-	}
-
-	dev_dbg(info->device, "targeting %d frames per second\n", board->fps);
-	info->fbdefio->delay = HZ / board->fps;
-	info->fbdefio->first_io = auok190xfb_dpy_first_io,
-	info->fbdefio->deferred_io = auok190xfb_dpy_deferred_io,
-	fb_deferred_io_init(info);
-
-	/* color map */
-
-	ret = fb_alloc_cmap(&info->cmap, 256, 0);
-	if (ret < 0) {
-		dev_err(info->device, "Failed to allocate colormap\n");
-		goto err_cmap;
-	}
-
-	/* controller init */
-
-	par->consecutive_threshold = 100;
-	par->init(par);
-	auok190x_identify(par);
-
-	platform_set_drvdata(pdev, info);
-
-	ret = register_framebuffer(info);
-	if (ret < 0)
-		goto err_regfb;
-
-	ret = sysfs_create_group(&info->device->kobj, &auok190x_attr_group);
-	if (ret)
-		goto err_sysfs;
-
-	dev_info(info->device, "fb%d: %dx%d using %dK of video memory\n",
-		 info->node, info->var.xres, info->var.yres,
-		 videomemorysize >> 10);
-
-	/* increase autosuspend_delay when we use alternative methods
-	 * for runtime_pm
-	 */
-	par->autosuspend_delay = (board->quirks & AUOK190X_QUIRK_STANDBYBROKEN)
-					? 1000 : 200;
-
-	pm_runtime_set_active(info->device);
-	pm_runtime_enable(info->device);
-	pm_runtime_set_autosuspend_delay(info->device, par->autosuspend_delay);
-	pm_runtime_use_autosuspend(info->device);
-
-	return 0;
-
-err_sysfs:
-	unregister_framebuffer(info);
-err_regfb:
-	fb_dealloc_cmap(&info->cmap);
-err_cmap:
-	fb_deferred_io_cleanup(info);
-err_defio:
-	vfree((void *)info->screen_base);
-err_irq:
-	auok190x_power(par, 0);
-err_gpio3:
-	gpio_free(board->gpio_nrst);
-err_gpio2:
-	gpio_free(board->gpio_nsleep);
-err_gpio1:
-	board->cleanup(par);
-err_board:
-	regulator_put(par->regulator);
-err_reg:
-	framebuffer_release(info);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(auok190x_common_probe);
-
-int  auok190x_common_remove(struct platform_device *pdev)
-{
-	struct fb_info *info = platform_get_drvdata(pdev);
-	struct auok190xfb_par *par = info->par;
-	struct auok190x_board *board = par->board;
-
-	pm_runtime_disable(info->device);
-
-	sysfs_remove_group(&info->device->kobj, &auok190x_attr_group);
-
-	unregister_framebuffer(info);
-
-	fb_dealloc_cmap(&info->cmap);
-
-	fb_deferred_io_cleanup(info);
-
-	vfree((void *)info->screen_base);
-
-	auok190x_power(par, 0);
-
-	gpio_free(board->gpio_nrst);
-	gpio_free(board->gpio_nsleep);
-
-	board->cleanup(par);
-
-	regulator_put(par->regulator);
-
-	framebuffer_release(info);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(auok190x_common_remove);
-
-MODULE_DESCRIPTION("Common code for AUO-K190X controllers");
-MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
-MODULE_LICENSE("GPL");
Index: b/drivers/video/fbdev/auo_k190x.h
===================================================================
--- a/drivers/video/fbdev/auo_k190x.h	2017-10-18 14:35:21.947448311 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,129 +0,0 @@
-/*
- * Private common definitions for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <heiko@sntech.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * I80 interface specific defines
- */
-
-#define AUOK190X_I80_CS			0x01
-#define AUOK190X_I80_DC			0x02
-#define AUOK190X_I80_WR			0x03
-#define AUOK190X_I80_OE			0x04
-
-/*
- * AUOK190x commands, common to both controllers
- */
-
-#define AUOK190X_CMD_INIT		0x0000
-#define AUOK190X_CMD_STANDBY		0x0001
-#define AUOK190X_CMD_WAKEUP		0x0002
-#define AUOK190X_CMD_TCON_RESET		0x0003
-#define AUOK190X_CMD_DATA_STOP		0x1002
-#define AUOK190X_CMD_LUT_START		0x1003
-#define AUOK190X_CMD_DISP_REFRESH	0x1004
-#define AUOK190X_CMD_DISP_RESET		0x1005
-#define AUOK190X_CMD_PRE_DISPLAY_START	0x100D
-#define AUOK190X_CMD_PRE_DISPLAY_STOP	0x100F
-#define AUOK190X_CMD_FLASH_W		0x2000
-#define AUOK190X_CMD_FLASH_E		0x2001
-#define AUOK190X_CMD_FLASH_STS		0x2002
-#define AUOK190X_CMD_FRAMERATE		0x3000
-#define AUOK190X_CMD_READ_VERSION	0x4000
-#define AUOK190X_CMD_READ_STATUS	0x4001
-#define AUOK190X_CMD_READ_LUT		0x4003
-#define AUOK190X_CMD_DRIVERTIMING	0x5000
-#define AUOK190X_CMD_LBALANCE		0x5001
-#define AUOK190X_CMD_AGINGMODE		0x6000
-#define AUOK190X_CMD_AGINGEXIT		0x6001
-
-/*
- * Common settings for AUOK190X_CMD_INIT
- */
-
-#define AUOK190X_INIT_DATA_FILTER	(0 << 12)
-#define AUOK190X_INIT_DATA_BYPASS	(1 << 12)
-#define AUOK190X_INIT_INVERSE_WHITE	(0 << 9)
-#define AUOK190X_INIT_INVERSE_BLACK	(1 << 9)
-#define AUOK190X_INIT_SCAN_DOWN		(0 << 1)
-#define AUOK190X_INIT_SCAN_UP		(1 << 1)
-#define AUOK190X_INIT_SHIFT_LEFT	(0 << 0)
-#define AUOK190X_INIT_SHIFT_RIGHT	(1 << 0)
-
-/* Common bits to pixels
- *   Mode	15-12	11-8	7-4	3-0
- *   format0	4	3	2	1
- *   format1	3	4	1	2
- */
-
-#define AUOK190X_INIT_FORMAT0		0
-#define AUOK190X_INIT_FORMAT1		(1 << 6)
-
-/*
- * settings for AUOK190X_CMD_RESET
- */
-
-#define AUOK190X_RESET_TCON		(0 << 0)
-#define AUOK190X_RESET_NORMAL		(1 << 0)
-#define AUOK190X_RESET_PON		(1 << 1)
-
-/*
- * AUOK190X_CMD_VERSION
- */
-
-#define AUOK190X_VERSION_TEMP_MASK		(0x1ff)
-#define AUOK190X_VERSION_EPD_MASK		(0xff)
-#define AUOK190X_VERSION_SIZE_INT(_val)		((_val & 0xfc00) >> 10)
-#define AUOK190X_VERSION_SIZE_FLOAT(_val)	((_val & 0x3c0) >> 6)
-#define AUOK190X_VERSION_MODEL(_val)		(_val & 0x3f)
-#define AUOK190X_VERSION_LUT(_val)		(_val & 0xff)
-#define AUOK190X_VERSION_TCON(_val)		((_val & 0xff00) >> 8)
-
-/*
- * update modes for CMD_PARTIALDISP on K1900 and CMD_DDMA on K1901
- */
-
-#define AUOK190X_UPDATE_MODE(_res)		((_res & 0x7) << 12)
-#define AUOK190X_UPDATE_NONFLASH		(1 << 15)
-
-/*
- * track panel specific parameters for common init
- */
-
-struct auok190x_init_data {
-	char *id;
-	struct auok190x_board *board;
-
-	void (*update_partial)(struct auok190xfb_par *par, u16 y1, u16 y2);
-	void (*update_all)(struct auok190xfb_par *par);
-	bool (*need_refresh)(struct auok190xfb_par *par);
-	void (*init)(struct auok190xfb_par *par);
-};
-
-
-extern void auok190x_send_command_nowait(struct auok190xfb_par *par, u16 data);
-extern int auok190x_send_command(struct auok190xfb_par *par, u16 data);
-extern void auok190x_send_cmdargs_nowait(struct auok190xfb_par *par, u16 cmd,
-					 int argc, u16 *argv);
-extern int auok190x_send_cmdargs(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv);
-extern void auok190x_send_cmdargs_pixels_nowait(struct auok190xfb_par *par,
-						u16 cmd, int argc, u16 *argv,
-						int size, u16 *data);
-extern int auok190x_send_cmdargs_pixels(struct auok190xfb_par *par, u16 cmd,
-					int argc, u16 *argv, int size,
-					u16 *data);
-extern int auok190x_read_cmdargs(struct auok190xfb_par *par, u16 cmd,
-				  int argc, u16 *argv);
-
-extern int auok190x_common_probe(struct platform_device *pdev,
-				 struct auok190x_init_data *init);
-extern int auok190x_common_remove(struct platform_device *pdev);
-
-extern const struct dev_pm_ops auok190x_pm;
Index: b/include/video/auo_k190xfb.h
===================================================================
--- a/include/video/auo_k190xfb.h	2017-10-18 14:35:25.827448262 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,107 +0,0 @@
-/*
- * Definitions for AUO-K190X framebuffer drivers
- *
- * Copyright (C) 2012 Heiko Stuebner <heiko@sntech.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _LINUX_VIDEO_AUO_K190XFB_H_
-#define _LINUX_VIDEO_AUO_K190XFB_H_
-
-/* Controller standby command needs a param */
-#define AUOK190X_QUIRK_STANDBYPARAM	(1 << 0)
-
-/* Controller standby is completely broken */
-#define AUOK190X_QUIRK_STANDBYBROKEN	(1 << 1)
-
-/*
- * Resolutions for the displays
- */
-#define AUOK190X_RESOLUTION_800_600		0
-#define AUOK190X_RESOLUTION_1024_768		1
-#define AUOK190X_RESOLUTION_600_800		4
-#define AUOK190X_RESOLUTION_768_1024		5
-
-/*
- * struct used by auok190x. board specific stuff comes from *board
- */
-struct auok190xfb_par {
-	struct fb_info *info;
-	struct auok190x_board *board;
-
-	struct regulator *regulator;
-
-	struct mutex io_lock;
-	struct delayed_work work;
-	wait_queue_head_t waitq;
-	int resolution;
-	int rotation;
-	int consecutive_threshold;
-	int update_cnt;
-
-	/* panel and controller informations */
-	int epd_type;
-	int panel_size_int;
-	int panel_size_float;
-	int panel_model;
-	int tcon_version;
-	int lut_version;
-
-	/* individual controller callbacks */
-	void (*update_partial)(struct auok190xfb_par *par, u16 y1, u16 y2);
-	void (*update_all)(struct auok190xfb_par *par);
-	bool (*need_refresh)(struct auok190xfb_par *par);
-	void (*init)(struct auok190xfb_par *par);
-	void (*recover)(struct auok190xfb_par *par);
-
-	int update_mode; /* mode to use for updates */
-	int last_mode; /* update mode last used */
-	int flash;
-
-	/* power management */
-	int autosuspend_delay;
-	bool standby;
-	bool manual_standby;
-};
-
-/**
- * Board specific platform-data
- * @init:		initialize the controller interface
- * @cleanup:		cleanup the controller interface
- * @wait_for_rdy:	wait until the controller is not busy anymore
- * @set_ctl:		change an interface control
- * @set_hdb:		write a value to the data register
- * @get_hdb:		read a value from the data register
- * @setup_irq:		method to setup the irq handling on the busy gpio
- * @gpio_nsleep:	sleep gpio
- * @gpio_nrst:		reset gpio
- * @gpio_nbusy:		busy gpio
- * @resolution:		one of the AUOK190X_RESOLUTION constants
- * @rotation:		rotation of the framebuffer
- * @quirks:		controller quirks to honor
- * @fps:		frames per second for defio
- */
-struct auok190x_board {
-	int (*init)(struct auok190xfb_par *);
-	void (*cleanup)(struct auok190xfb_par *);
-	int (*wait_for_rdy)(struct auok190xfb_par *);
-
-	void (*set_ctl)(struct auok190xfb_par *, unsigned char, u8);
-	void (*set_hdb)(struct auok190xfb_par *, u16);
-	u16 (*get_hdb)(struct auok190xfb_par *);
-
-	int (*setup_irq)(struct fb_info *);
-
-	int gpio_nsleep;
-	int gpio_nrst;
-	int gpio_nbusy;
-
-	int resolution;
-	int quirks;
-	int fps;
-};
-
-#endif