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path: root/drivers/video/fbdev/auo_k190x.c
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Diffstat (limited to 'drivers/video/fbdev/auo_k190x.c')
-rw-r--r--drivers/video/fbdev/auo_k190x.c1190
1 files changed, 0 insertions, 1190 deletions
diff --git a/drivers/video/fbdev/auo_k190x.c b/drivers/video/fbdev/auo_k190x.c
deleted file mode 100644
index b39681e6f4fd..000000000000
--- a/drivers/video/fbdev/auo_k190x.c
+++ /dev/null
@@ -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");