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path: root/drivers/video/fbdev/auo_k1901fb.c
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Diffstat (limited to 'drivers/video/fbdev/auo_k1901fb.c')
-rw-r--r--drivers/video/fbdev/auo_k1901fb.c257
1 files changed, 0 insertions, 257 deletions
diff --git a/drivers/video/fbdev/auo_k1901fb.c b/drivers/video/fbdev/auo_k1901fb.c
deleted file mode 100644
index 681fe61957b6..000000000000
--- a/drivers/video/fbdev/auo_k1901fb.c
+++ /dev/null
@@ -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");