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android_kernel_xiaomi_sm8350/drivers/video/fbdev/au1200fb.c
Zhang Shurong b07e31824d fbdev: au1200fb: Fix missing IRQ check in au1200fb_drv_probe 
[ Upstream commit 4e88761f5f8c7869f15a2046b1a1116f4fab4ac8 ]

This func misses checking for platform_get_irq()'s call and may passes the
negative error codes to request_irq(), which takes unsigned IRQ #,
causing it to fail with -EINVAL, overriding an original error code.

Fix this by stop calling request_irq() with invalid IRQ #s.

Fixes: 1630d85a83 ("au1200fb: fix hardcoded IRQ")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-07-27 08:37:44 +02:00

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/*
* BRIEF MODULE DESCRIPTION
* Au1200 LCD Driver.
*
* Copyright 2004-2005 AMD
* Author: AMD
*
* Based on:
* linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
* Created 28 Dec 1997 by Geert Uytterhoeven
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ctype.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1200fb.h> /* platform_data */
#include "au1200fb.h"
#define DRIVER_NAME "au1200fb"
#define DRIVER_DESC "LCD controller driver for AU1200 processors"
#define DEBUG 0
#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg)
#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg)
#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg)
#if DEBUG
#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg)
#else
#define print_dbg(f, arg...) do {} while (0)
#endif
#define AU1200_LCD_FB_IOCTL 0x46FF
#define AU1200_LCD_SET_SCREEN 1
#define AU1200_LCD_GET_SCREEN 2
#define AU1200_LCD_SET_WINDOW 3
#define AU1200_LCD_GET_WINDOW 4
#define AU1200_LCD_SET_PANEL 5
#define AU1200_LCD_GET_PANEL 6
#define SCREEN_SIZE (1<< 1)
#define SCREEN_BACKCOLOR (1<< 2)
#define SCREEN_BRIGHTNESS (1<< 3)
#define SCREEN_COLORKEY (1<< 4)
#define SCREEN_MASK (1<< 5)
struct au1200_lcd_global_regs_t {
unsigned int flags;
unsigned int xsize;
unsigned int ysize;
unsigned int backcolor;
unsigned int brightness;
unsigned int colorkey;
unsigned int mask;
unsigned int panel_choice;
char panel_desc[80];
};
#define WIN_POSITION (1<< 0)
#define WIN_ALPHA_COLOR (1<< 1)
#define WIN_ALPHA_MODE (1<< 2)
#define WIN_PRIORITY (1<< 3)
#define WIN_CHANNEL (1<< 4)
#define WIN_BUFFER_FORMAT (1<< 5)
#define WIN_COLOR_ORDER (1<< 6)
#define WIN_PIXEL_ORDER (1<< 7)
#define WIN_SIZE (1<< 8)
#define WIN_COLORKEY_MODE (1<< 9)
#define WIN_DOUBLE_BUFFER_MODE (1<< 10)
#define WIN_RAM_ARRAY_MODE (1<< 11)
#define WIN_BUFFER_SCALE (1<< 12)
#define WIN_ENABLE (1<< 13)
struct au1200_lcd_window_regs_t {
unsigned int flags;
unsigned int xpos;
unsigned int ypos;
unsigned int alpha_color;
unsigned int alpha_mode;
unsigned int priority;
unsigned int channel;
unsigned int buffer_format;
unsigned int color_order;
unsigned int pixel_order;
unsigned int xsize;
unsigned int ysize;
unsigned int colorkey_mode;
unsigned int double_buffer_mode;
unsigned int ram_array_mode;
unsigned int xscale;
unsigned int yscale;
unsigned int enable;
};
struct au1200_lcd_iodata_t {
unsigned int subcmd;
struct au1200_lcd_global_regs_t global;
struct au1200_lcd_window_regs_t window;
};
#if defined(__BIG_ENDIAN)
#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11
#else
#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00
#endif
#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565
/* Private, per-framebuffer management information (independent of the panel itself) */
struct au1200fb_device {
struct fb_info *fb_info; /* FB driver info record */
struct au1200fb_platdata *pd;
struct device *dev;
int plane;
unsigned char* fb_mem; /* FrameBuffer memory map */
unsigned int fb_len;
dma_addr_t fb_phys;
};
/********************************************************************/
/* LCD controller restrictions */
#define AU1200_LCD_MAX_XRES 1280
#define AU1200_LCD_MAX_YRES 1024
#define AU1200_LCD_MAX_BPP 32
#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */
#define AU1200_LCD_NBR_PALETTE_ENTRIES 256
/* Default number of visible screen buffer to allocate */
#define AU1200FB_NBR_VIDEO_BUFFERS 1
/* Default maximum number of fb devices to create */
#define MAX_DEVICE_COUNT 4
/* Default window configuration entry to use (see windows[]) */
#define DEFAULT_WINDOW_INDEX 2
/********************************************************************/
static struct fb_info *_au1200fb_infos[MAX_DEVICE_COUNT];
static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR;
static int device_count = MAX_DEVICE_COUNT;
static int window_index = DEFAULT_WINDOW_INDEX; /* default is zero */
static int panel_index = 2; /* default is zero */
static struct window_settings *win;
static struct panel_settings *panel;
static int noblanking = 1;
static int nohwcursor = 0;
struct window_settings {
unsigned char name[64];
uint32 mode_backcolor;
uint32 mode_colorkey;
uint32 mode_colorkeymsk;
struct {
int xres;
int yres;
int xpos;
int ypos;
uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */
uint32 mode_winenable;
} w[4];
};
#if defined(__BIG_ENDIAN)
#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00
#else
#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01
#endif
/*
* Default window configurations
*/
static struct window_settings windows[] = {
{ /* Index 0 */
"0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
/* mode_backcolor */ 0x006600ff,
/* mode_colorkey,msk*/ 0, 0,
{
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP,
/* mode_winenable*/ LCD_WINENABLE_WEN0,
},
{
/* xres, yres, xpos, ypos */ 100, 100, 100, 100,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP |
LCD_WINCTRL1_PIPE,
/* mode_winenable*/ LCD_WINENABLE_WEN1,
},
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP,
/* mode_winenable*/ 0,
},
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP |
LCD_WINCTRL1_PIPE,
/* mode_winenable*/ 0,
},
},
},
{ /* Index 1 */
"0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
/* mode_backcolor */ 0x006600ff,
/* mode_colorkey,msk*/ 0, 0,
{
{
/* xres, yres, xpos, ypos */ 320, 240, 5, 5,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP |
LCD_WINCTRL1_PO_00,
/* mode_winenable*/ LCD_WINENABLE_WEN0,
},
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565
| LCD_WINCTRL1_PO_16BPP,
/* mode_winenable*/ 0,
},
{
/* xres, yres, xpos, ypos */ 100, 100, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP |
LCD_WINCTRL1_PIPE,
/* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
},
{
/* xres, yres, xpos, ypos */ 200, 25, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP |
LCD_WINCTRL1_PIPE,
/* mode_winenable*/ 0,
},
},
},
{ /* Index 2 */
"0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx",
/* mode_backcolor */ 0x006600ff,
/* mode_colorkey,msk*/ 0, 0,
{
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP,
/* mode_winenable*/ LCD_WINENABLE_WEN0,
},
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP,
/* mode_winenable*/ 0,
},
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP |
LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE,
/* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/,
},
{
/* xres, yres, xpos, ypos */ 0, 0, 0, 0,
/* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 |
LCD_WINCTRL1_PO_16BPP |
LCD_WINCTRL1_PIPE,
/* mode_winenable*/ 0,
},
},
},
/* Need VGA 640 @ 24bpp, @ 32bpp */
/* Need VGA 800 @ 24bpp, @ 32bpp */
/* Need VGA 1024 @ 24bpp, @ 32bpp */
};
/*
* Controller configurations for various panels.
*/
struct panel_settings
{
const char name[25]; /* Full name <vendor>_<model> */
struct fb_monspecs monspecs; /* FB monitor specs */
/* panel timings */
uint32 mode_screen;
uint32 mode_horztiming;
uint32 mode_verttiming;
uint32 mode_clkcontrol;
uint32 mode_pwmdiv;
uint32 mode_pwmhi;
uint32 mode_outmask;
uint32 mode_fifoctrl;
uint32 mode_backlight;
uint32 lcdclk;
#define Xres min_xres
#define Yres min_yres
u32 min_xres; /* Minimum horizontal resolution */
u32 max_xres; /* Maximum horizontal resolution */
u32 min_yres; /* Minimum vertical resolution */
u32 max_yres; /* Maximum vertical resolution */
};
/********************************************************************/
/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */
/* List of panels known to work with the AU1200 LCD controller.
* To add a new panel, enter the same specifications as the
* Generic_TFT one, and MAKE SURE that it doesn't conflicts
* with the controller restrictions. Restrictions are:
*
* STN color panels: max_bpp <= 12
* STN mono panels: max_bpp <= 4
* TFT panels: max_bpp <= 16
* max_xres <= 800
* max_yres <= 600
*/
static struct panel_settings known_lcd_panels[] =
{
[0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */
.name = "QVGA_320x240",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = LCD_SCREEN_SX_N(320) |
LCD_SCREEN_SY_N(240),
.mode_horztiming = 0x00c4623b,
.mode_verttiming = 0x00502814,
.mode_clkcontrol = 0x00020002, /* /4=24Mhz */
.mode_pwmdiv = 0x00000000,
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
320, 320,
240, 240,
},
[1] = { /* VGA 640x480 H:30.3kHz V:58Hz */
.name = "VGA_640x480",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = 0x13f9df80,
.mode_horztiming = 0x003c5859,
.mode_verttiming = 0x00741201,
.mode_clkcontrol = 0x00020001, /* /4=24Mhz */
.mode_pwmdiv = 0x00000000,
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
640, 480,
640, 480,
},
[2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */
.name = "SVGA_800x600",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = 0x18fa5780,
.mode_horztiming = 0x00dc7e77,
.mode_verttiming = 0x00584805,
.mode_clkcontrol = 0x00020000, /* /2=48Mhz */
.mode_pwmdiv = 0x00000000,
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
800, 800,
600, 600,
},
[3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */
.name = "XVGA_1024x768",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = 0x1ffaff80,
.mode_horztiming = 0x007d0e57,
.mode_verttiming = 0x00740a01,
.mode_clkcontrol = 0x000A0000, /* /1 */
.mode_pwmdiv = 0x00000000,
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 72,
1024, 1024,
768, 768,
},
[4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
.name = "XVGA_1280x1024",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = 0x27fbff80,
.mode_horztiming = 0x00cdb2c7,
.mode_verttiming = 0x00600002,
.mode_clkcontrol = 0x000A0000, /* /1 */
.mode_pwmdiv = 0x00000000,
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 120,
1280, 1280,
1024, 1024,
},
[5] = { /* Samsung 1024x768 TFT */
.name = "Samsung_1024x768_TFT",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = 0x1ffaff80,
.mode_horztiming = 0x018cc677,
.mode_verttiming = 0x00241217,
.mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */
.mode_pwmdiv = 0x8000063f, /* SCB 0x0 */
.mode_pwmhi = 0x03400000, /* SCB 0x0 */
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
1024, 1024,
768, 768,
},
[6] = { /* Toshiba 640x480 TFT */
.name = "Toshiba_640x480_TFT",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = LCD_SCREEN_SX_N(640) |
LCD_SCREEN_SY_N(480),
.mode_horztiming = LCD_HORZTIMING_HPW_N(96) |
LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
.mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
.mode_clkcontrol = 0x00000000, /* /4=24Mhz */
.mode_pwmdiv = 0x8000063f,
.mode_pwmhi = 0x03400000,
.mode_outmask = 0x00fcfcfc,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
640, 480,
640, 480,
},
[7] = { /* Sharp 320x240 TFT */
.name = "Sharp_320x240_TFT",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 12500,
.hfmax = 20000,
.vfmin = 38,
.vfmax = 81,
.dclkmin = 4500000,
.dclkmax = 6800000,
.input = FB_DISP_RGB,
},
.mode_screen = LCD_SCREEN_SX_N(320) |
LCD_SCREEN_SY_N(240),
.mode_horztiming = LCD_HORZTIMING_HPW_N(60) |
LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
.mode_verttiming = LCD_VERTTIMING_VPW_N(2) |
LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
.mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
.mode_pwmdiv = 0x8000063f,
.mode_pwmhi = 0x03400000,
.mode_outmask = 0x00fcfcfc,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96, /* 96MHz AUXPLL */
320, 320,
240, 240,
},
[8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
.name = "Toppoly_TD070WGCB2",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = LCD_SCREEN_SX_N(856) |
LCD_SCREEN_SY_N(480),
.mode_horztiming = LCD_HORZTIMING_HND2_N(43) |
LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
.mode_verttiming = LCD_VERTTIMING_VND2_N(20) |
LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
.mode_clkcontrol = 0x00020001, /* /4=24Mhz */
.mode_pwmdiv = 0x8000063f,
.mode_pwmhi = 0x03400000,
.mode_outmask = 0x00fcfcfc,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
856, 856,
480, 480,
},
[9] = {
.name = "DB1300_800x480",
.monspecs = {
.modedb = NULL,
.modedb_len = 0,
.hfmin = 30000,
.hfmax = 70000,
.vfmin = 60,
.vfmax = 60,
.dclkmin = 6000000,
.dclkmax = 28000000,
.input = FB_DISP_RGB,
},
.mode_screen = LCD_SCREEN_SX_N(800) |
LCD_SCREEN_SY_N(480),
.mode_horztiming = LCD_HORZTIMING_HPW_N(5) |
LCD_HORZTIMING_HND1_N(16) |
LCD_HORZTIMING_HND2_N(8),
.mode_verttiming = LCD_VERTTIMING_VPW_N(4) |
LCD_VERTTIMING_VND1_N(8) |
LCD_VERTTIMING_VND2_N(5),
.mode_clkcontrol = LCD_CLKCONTROL_PCD_N(1) |
LCD_CLKCONTROL_IV |
LCD_CLKCONTROL_IH,
.mode_pwmdiv = 0x00000000,
.mode_pwmhi = 0x00000000,
.mode_outmask = 0x00FFFFFF,
.mode_fifoctrl = 0x2f2f2f2f,
.mode_backlight = 0x00000000,
.lcdclk = 96,
800, 800,
480, 480,
},
};
#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))
/********************************************************************/
static int winbpp (unsigned int winctrl1)
{
int bits = 0;
/* how many bits are needed for each pixel format */
switch (winctrl1 & LCD_WINCTRL1_FRM) {
case LCD_WINCTRL1_FRM_1BPP:
bits = 1;
break;
case LCD_WINCTRL1_FRM_2BPP:
bits = 2;
break;
case LCD_WINCTRL1_FRM_4BPP:
bits = 4;
break;
case LCD_WINCTRL1_FRM_8BPP:
bits = 8;
break;
case LCD_WINCTRL1_FRM_12BPP:
case LCD_WINCTRL1_FRM_16BPP655:
case LCD_WINCTRL1_FRM_16BPP565:
case LCD_WINCTRL1_FRM_16BPP556:
case LCD_WINCTRL1_FRM_16BPPI1555:
case LCD_WINCTRL1_FRM_16BPPI5551:
case LCD_WINCTRL1_FRM_16BPPA1555:
case LCD_WINCTRL1_FRM_16BPPA5551:
bits = 16;
break;
case LCD_WINCTRL1_FRM_24BPP:
case LCD_WINCTRL1_FRM_32BPP:
bits = 32;
break;
}
return bits;
}
static int fbinfo2index (struct fb_info *fb_info)
{
int i;
for (i = 0; i < device_count; ++i) {
if (fb_info == _au1200fb_infos[i])
return i;
}
printk("au1200fb: ERROR: fbinfo2index failed!\n");
return -1;
}
static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
int xpos, int ypos)
{
uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
int xsz, ysz;
/* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */
winctrl0 = lcd->window[plane].winctrl0;
winctrl1 = lcd->window[plane].winctrl1;
winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);
/* Check for off-screen adjustments */
xsz = win->w[plane].xres;
ysz = win->w[plane].yres;
if ((xpos + win->w[plane].xres) > panel->Xres) {
/* Off-screen to the right */
xsz = panel->Xres - xpos; /* off by 1 ??? */
/*printk("off screen right\n");*/
}
if ((ypos + win->w[plane].yres) > panel->Yres) {
/* Off-screen to the bottom */
ysz = panel->Yres - ypos; /* off by 1 ??? */
/*printk("off screen bottom\n");*/
}
if (xpos < 0) {
/* Off-screen to the left */
xsz = win->w[plane].xres + xpos;
fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
xpos = 0;
/*printk("off screen left\n");*/
}
if (ypos < 0) {
/* Off-screen to the top */
ysz = win->w[plane].yres + ypos;
/* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
ypos = 0;
/*printk("off screen top\n");*/
}
/* record settings */
win->w[plane].xpos = xpos;
win->w[plane].ypos = ypos;
xsz -= 1;
ysz -= 1;
winctrl0 |= (xpos << 21);
winctrl0 |= (ypos << 10);
winctrl1 |= (xsz << 11);
winctrl1 |= (ysz << 0);
/* Disable the window while making changes, then restore WINEN */
winenable = lcd->winenable & (1 << plane);
wmb(); /* drain writebuffer */
lcd->winenable &= ~(1 << plane);
lcd->window[plane].winctrl0 = winctrl0;
lcd->window[plane].winctrl1 = winctrl1;
lcd->window[plane].winbuf0 =
lcd->window[plane].winbuf1 = fbdev->fb_phys;
lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
lcd->winenable |= winenable;
wmb(); /* drain writebuffer */
return 0;
}
static void au1200_setpanel(struct panel_settings *newpanel,
struct au1200fb_platdata *pd)
{
/*
* Perform global setup/init of LCD controller
*/
uint32 winenable;
/* Make sure all windows disabled */
winenable = lcd->winenable;
lcd->winenable = 0;
wmb(); /* drain writebuffer */
/*
* Ensure everything is disabled before reconfiguring
*/
if (lcd->screen & LCD_SCREEN_SEN) {
/* Wait for vertical sync period */
lcd->intstatus = LCD_INT_SS;
while ((lcd->intstatus & LCD_INT_SS) == 0)
;
lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/
do {
lcd->intstatus = lcd->intstatus; /*clear interrupts*/
wmb(); /* drain writebuffer */
/*wait for controller to shut down*/
} while ((lcd->intstatus & LCD_INT_SD) == 0);
/* Call shutdown of current panel (if up) */
/* this must occur last, because if an external clock is driving
the controller, the clock cannot be turned off before first
shutting down the controller.
*/
if (pd->panel_shutdown)
pd->panel_shutdown();
}
/* Newpanel == NULL indicates a shutdown operation only */
if (newpanel == NULL)
return;
panel = newpanel;
printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);
/*
* Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
*/
if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
{
struct clk *c = clk_get(NULL, "lcd_intclk");
long r, pc = panel->lcdclk * 1000000;
if (!IS_ERR(c)) {
r = clk_round_rate(c, pc);
if ((pc - r) < (pc / 10)) { /* 10% slack */
clk_set_rate(c, r);
clk_prepare_enable(c);
}
clk_put(c);
}
}
/*
* Configure panel timings
*/
lcd->screen = panel->mode_screen;
lcd->horztiming = panel->mode_horztiming;
lcd->verttiming = panel->mode_verttiming;
lcd->clkcontrol = panel->mode_clkcontrol;
lcd->pwmdiv = panel->mode_pwmdiv;
lcd->pwmhi = panel->mode_pwmhi;
lcd->outmask = panel->mode_outmask;
lcd->fifoctrl = panel->mode_fifoctrl;
wmb(); /* drain writebuffer */
/* fixme: Check window settings to make sure still valid
* for new geometry */
#if 0
au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
#endif
lcd->winenable = winenable;
/*
* Re-enable screen now that it is configured
*/
lcd->screen |= LCD_SCREEN_SEN;
wmb(); /* drain writebuffer */
/* Call init of panel */
if (pd->panel_init)
pd->panel_init();
/* FIX!!!! not appropriate on panel change!!! Global setup/init */
lcd->intenable = 0;
lcd->intstatus = ~0;
lcd->backcolor = win->mode_backcolor;
/* Setup Color Key - FIX!!! */
lcd->colorkey = win->mode_colorkey;
lcd->colorkeymsk = win->mode_colorkeymsk;
/* Setup HWCursor - FIX!!! Need to support this eventually */
lcd->hwc.cursorctrl = 0;
lcd->hwc.cursorpos = 0;
lcd->hwc.cursorcolor0 = 0;
lcd->hwc.cursorcolor1 = 0;
lcd->hwc.cursorcolor2 = 0;
lcd->hwc.cursorcolor3 = 0;
#if 0
#define D(X) printk("%25s: %08X\n", #X, X)
D(lcd->screen);
D(lcd->horztiming);
D(lcd->verttiming);
D(lcd->clkcontrol);
D(lcd->pwmdiv);
D(lcd->pwmhi);
D(lcd->outmask);
D(lcd->fifoctrl);
D(lcd->window[0].winctrl0);
D(lcd->window[0].winctrl1);
D(lcd->window[0].winctrl2);
D(lcd->window[0].winbuf0);
D(lcd->window[0].winbuf1);
D(lcd->window[0].winbufctrl);
D(lcd->window[1].winctrl0);
D(lcd->window[1].winctrl1);
D(lcd->window[1].winctrl2);
D(lcd->window[1].winbuf0);
D(lcd->window[1].winbuf1);
D(lcd->window[1].winbufctrl);
D(lcd->window[2].winctrl0);
D(lcd->window[2].winctrl1);
D(lcd->window[2].winctrl2);
D(lcd->window[2].winbuf0);
D(lcd->window[2].winbuf1);
D(lcd->window[2].winbufctrl);
D(lcd->window[3].winctrl0);
D(lcd->window[3].winctrl1);
D(lcd->window[3].winctrl2);
D(lcd->window[3].winbuf0);
D(lcd->window[3].winbuf1);
D(lcd->window[3].winbufctrl);
D(lcd->winenable);
D(lcd->intenable);
D(lcd->intstatus);
D(lcd->backcolor);
D(lcd->winenable);
D(lcd->colorkey);
D(lcd->colorkeymsk);
D(lcd->hwc.cursorctrl);
D(lcd->hwc.cursorpos);
D(lcd->hwc.cursorcolor0);
D(lcd->hwc.cursorcolor1);
D(lcd->hwc.cursorcolor2);
D(lcd->hwc.cursorcolor3);
#endif
}
static void au1200_setmode(struct au1200fb_device *fbdev)
{
int plane = fbdev->plane;
/* Window/plane setup */
lcd->window[plane].winctrl1 = ( 0
| LCD_WINCTRL1_PRI_N(plane)
| win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
) ;
au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);
lcd->window[plane].winctrl2 = ( 0
| LCD_WINCTRL2_CKMODE_00
| LCD_WINCTRL2_DBM
| LCD_WINCTRL2_BX_N(fbdev->fb_info->fix.line_length)
| LCD_WINCTRL2_SCX_1
| LCD_WINCTRL2_SCY_1
) ;
lcd->winenable |= win->w[plane].mode_winenable;
wmb(); /* drain writebuffer */
}
/* Inline helpers */
/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/
#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN)
/* Bitfields format supported by the controller. */
static struct fb_bitfield rgb_bitfields[][4] = {
/* Red, Green, Blue, Transp */
[LCD_WINCTRL1_FRM_16BPP655 >> 25] =
{ { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
[LCD_WINCTRL1_FRM_16BPP565 >> 25] =
{ { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
[LCD_WINCTRL1_FRM_16BPP556 >> 25] =
{ { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
[LCD_WINCTRL1_FRM_16BPPI1555 >> 25] =
{ { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
[LCD_WINCTRL1_FRM_16BPPI5551 >> 25] =
{ { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } },
[LCD_WINCTRL1_FRM_16BPPA1555 >> 25] =
{ { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
[LCD_WINCTRL1_FRM_16BPPA5551 >> 25] =
{ { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
[LCD_WINCTRL1_FRM_24BPP >> 25] =
{ { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } },
[LCD_WINCTRL1_FRM_32BPP >> 25] =
{ { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } },
};
/*-------------------------------------------------------------------------*/
/* Helpers */
static void au1200fb_update_fbinfo(struct fb_info *fbi)
{
/* FIX!!!! This also needs to take the window pixel format into account!!! */
/* Update var-dependent FB info */
if (panel_is_color(panel)) {
if (fbi->var.bits_per_pixel <= 8) {
/* palettized */
fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR;
fbi->fix.line_length = fbi->var.xres_virtual /
(8/fbi->var.bits_per_pixel);
} else {
/* non-palettized */
fbi->fix.visual = FB_VISUAL_TRUECOLOR;
fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8);
}
} else {
/* mono FIX!!! mono 8 and 4 bits */
fbi->fix.visual = FB_VISUAL_MONO10;
fbi->fix.line_length = fbi->var.xres_virtual / 8;
}
fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual;
print_dbg("line length: %d\n", fbi->fix.line_length);
print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel);
}
/*-------------------------------------------------------------------------*/
/* AU1200 framebuffer driver */
/* fb_check_var
* Validate var settings with hardware restrictions and modify it if necessary
*/
static int au1200fb_fb_check_var(struct fb_var_screeninfo *var,
struct fb_info *fbi)
{
struct au1200fb_device *fbdev = fbi->par;
u32 pixclock;
int screen_size, plane;
if (!var->pixclock)
return -EINVAL;
plane = fbdev->plane;
/* Make sure that the mode respect all LCD controller and
* panel restrictions. */
var->xres = win->w[plane].xres;
var->yres = win->w[plane].yres;
/* No need for virtual resolution support */
var->xres_virtual = var->xres;
var->yres_virtual = var->yres;
var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1);
screen_size = var->xres_virtual * var->yres_virtual;
if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8);
else screen_size /= (8/var->bits_per_pixel);
if (fbdev->fb_len < screen_size)
return -EINVAL; /* Virtual screen is to big, abort */
/* FIX!!!! what are the implicaitons of ignoring this for windows ??? */
/* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel
* clock can only be obtain by dividing this value by an even integer.
* Fallback to a slower pixel clock if necessary. */
pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin);
pixclock = min3(pixclock, fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2);
if (AU1200_LCD_MAX_CLK % pixclock) {
int diff = AU1200_LCD_MAX_CLK % pixclock;
pixclock -= diff;
}
var->pixclock = KHZ2PICOS(pixclock/1000);
#if 0
if (!panel_is_active(panel)) {
int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1;
if (!panel_is_color(panel)
&& (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) {
/* STN 8bit mono panel support is up to 6MHz pixclock */
var->pixclock = KHZ2PICOS(6000);
} else if (!pcd) {
/* Other STN panel support is up to 12MHz */
var->pixclock = KHZ2PICOS(12000);
}
}
#endif
/* Set bitfield accordingly */
switch (var->bits_per_pixel) {
case 16:
{
/* 16bpp True color.
* These must be set to MATCH WINCTRL[FORM] */
int idx;
idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
var->red = rgb_bitfields[idx][0];
var->green = rgb_bitfields[idx][1];
var->blue = rgb_bitfields[idx][2];
var->transp = rgb_bitfields[idx][3];
break;
}
case 32:
{
/* 32bpp True color.
* These must be set to MATCH WINCTRL[FORM] */
int idx;
idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25;
var->red = rgb_bitfields[idx][0];
var->green = rgb_bitfields[idx][1];
var->blue = rgb_bitfields[idx][2];
var->transp = rgb_bitfields[idx][3];
break;
}
default:
print_dbg("Unsupported depth %dbpp", var->bits_per_pixel);
return -EINVAL;
}
return 0;
}
/* fb_set_par
* Set hardware with var settings. This will enable the controller with a
* specific mode, normally validated with the fb_check_var method
*/
static int au1200fb_fb_set_par(struct fb_info *fbi)
{
struct au1200fb_device *fbdev = fbi->par;
au1200fb_update_fbinfo(fbi);
au1200_setmode(fbdev);
return 0;
}
/* fb_setcolreg
* Set color in LCD palette.
*/
static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp, struct fb_info *fbi)
{
volatile u32 *palette = lcd->palette;
u32 value;
if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1))
return -EINVAL;
if (fbi->var.grayscale) {
/* Convert color to grayscale */
red = green = blue =
(19595 * red + 38470 * green + 7471 * blue) >> 16;
}
if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
/* Place color in the pseudopalette */
if (regno > 16)
return -EINVAL;
palette = (u32*) fbi->pseudo_palette;
red >>= (16 - fbi->var.red.length);
green >>= (16 - fbi->var.green.length);
blue >>= (16 - fbi->var.blue.length);
value = (red << fbi->var.red.offset) |
(green << fbi->var.green.offset)|
(blue << fbi->var.blue.offset);
value &= 0xFFFF;
} else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) {
/* COLOR TFT PALLETTIZED (use RGB 565) */
value = (red & 0xF800)|((green >> 5) &
0x07E0)|((blue >> 11) & 0x001F);
value &= 0xFFFF;
} else if (0 /*panel_is_color(fbdev->panel)*/) {
/* COLOR STN MODE */
value = 0x1234;
value &= 0xFFF;
} else {
/* MONOCHROME MODE */
value = (green >> 12) & 0x000F;
value &= 0xF;
}
palette[regno] = value;
return 0;
}
/* fb_blank
* Blank the screen. Depending on the mode, the screen will be
* activated with the backlight color, or desactivated
*/
static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi)
{
struct au1200fb_device *fbdev = fbi->par;
/* Short-circuit screen blanking */
if (noblanking)
return 0;
switch (blank_mode) {
case FB_BLANK_UNBLANK:
case FB_BLANK_NORMAL:
/* printk("turn on panel\n"); */
au1200_setpanel(panel, fbdev->pd);
break;
case FB_BLANK_VSYNC_SUSPEND:
case FB_BLANK_HSYNC_SUSPEND:
case FB_BLANK_POWERDOWN:
/* printk("turn off panel\n"); */
au1200_setpanel(NULL, fbdev->pd);
break;
default:
break;
}
/* FB_BLANK_NORMAL is a soft blank */
return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0;
}
/* fb_mmap
* Map video memory in user space. We don't use the generic fb_mmap
* method mainly to allow the use of the TLB streaming flag (CCA=6)
*/
static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct au1200fb_device *fbdev = info->par;
return dma_mmap_attrs(fbdev->dev, vma, fbdev->fb_mem, fbdev->fb_phys,
fbdev->fb_len, 0);
}
static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
{
unsigned int hi1, divider;
/* SCREEN_SIZE: user cannot reset size, must switch panel choice */
if (pdata->flags & SCREEN_BACKCOLOR)
lcd->backcolor = pdata->backcolor;
if (pdata->flags & SCREEN_BRIGHTNESS) {
// limit brightness pwm duty to >= 30/1600
if (pdata->brightness < 30) {
pdata->brightness = 30;
}
divider = (lcd->pwmdiv & 0x3FFFF) + 1;
hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8);
lcd->pwmhi &= 0xFFFF;
lcd->pwmhi |= (hi1 << 16);
}
if (pdata->flags & SCREEN_COLORKEY)
lcd->colorkey = pdata->colorkey;
if (pdata->flags & SCREEN_MASK)
lcd->colorkeymsk = pdata->mask;
wmb(); /* drain writebuffer */
}
static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata)
{
unsigned int hi1, divider;
pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1;
pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1;
pdata->backcolor = lcd->backcolor;
pdata->colorkey = lcd->colorkey;
pdata->mask = lcd->colorkeymsk;
// brightness
hi1 = (lcd->pwmhi >> 16) + 1;
divider = (lcd->pwmdiv & 0x3FFFF) + 1;
pdata->brightness = ((hi1 << 8) / divider) - 1;
wmb(); /* drain writebuffer */
}
static void set_window(unsigned int plane,
struct au1200_lcd_window_regs_t *pdata)
{
unsigned int val, bpp;
/* Window control register 0 */
if (pdata->flags & WIN_POSITION) {
val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX |
LCD_WINCTRL0_OY);
val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX);
val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY);
lcd->window[plane].winctrl0 = val;
}
if (pdata->flags & WIN_ALPHA_COLOR) {
val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A);
val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A);
lcd->window[plane].winctrl0 = val;
}
if (pdata->flags & WIN_ALPHA_MODE) {
val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN);
val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN);
lcd->window[plane].winctrl0 = val;
}
/* Window control register 1 */
if (pdata->flags & WIN_PRIORITY) {
val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI);
val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI);
lcd->window[plane].winctrl1 = val;
}
if (pdata->flags & WIN_CHANNEL) {
val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE);
val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE);
lcd->window[plane].winctrl1 = val;
}
if (pdata->flags & WIN_BUFFER_FORMAT) {
val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM);
val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM);
lcd->window[plane].winctrl1 = val;
}
if (pdata->flags & WIN_COLOR_ORDER) {
val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO);
val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO);
lcd->window[plane].winctrl1 = val;
}
if (pdata->flags & WIN_PIXEL_ORDER) {
val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO);
val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO);
lcd->window[plane].winctrl1 = val;
}
if (pdata->flags & WIN_SIZE) {
val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX |
LCD_WINCTRL1_SZY);
val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX);
val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY);
lcd->window[plane].winctrl1 = val;
/* program buffer line width */
bpp = winbpp(val) / 8;
val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX);
val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX);
lcd->window[plane].winctrl2 = val;
}
/* Window control register 2 */
if (pdata->flags & WIN_COLORKEY_MODE) {
val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE);
val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE);
lcd->window[plane].winctrl2 = val;
}
if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) {
val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM);
val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM);
lcd->window[plane].winctrl2 = val;
}
if (pdata->flags & WIN_RAM_ARRAY_MODE) {
val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM);
val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM);
lcd->window[plane].winctrl2 = val;
}
/* Buffer line width programmed with WIN_SIZE */
if (pdata->flags & WIN_BUFFER_SCALE) {
val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX |
LCD_WINCTRL2_SCY);
val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX);
val |= ((pdata->ysize) & LCD_WINCTRL2_SCY);
lcd->window[plane].winctrl2 = val;
}
if (pdata->flags & WIN_ENABLE) {
val = lcd->winenable;
val &= ~(1<<plane);
val |= (pdata->enable & 1) << plane;
lcd->winenable = val;
}
wmb(); /* drain writebuffer */
}
static void get_window(unsigned int plane,
struct au1200_lcd_window_regs_t *pdata)
{
/* Window control register 0 */
pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21;
pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10;
pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2;
pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1;
/* Window control register 1 */
pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30;
pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29;
pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25;
pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24;
pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22;
pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1;
pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1;
/* Window control register 2 */
pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24;
pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23;
pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21;
pdata->enable = (lcd->winenable >> plane) & 1;
wmb(); /* drain writebuffer */
}
static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
struct au1200fb_device *fbdev = info->par;
int plane;
int val;
plane = fbinfo2index(info);
print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane);
if (cmd == AU1200_LCD_FB_IOCTL) {
struct au1200_lcd_iodata_t iodata;
if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata)))
return -EFAULT;
print_dbg("FB IOCTL called\n");
switch (iodata.subcmd) {
case AU1200_LCD_SET_SCREEN:
print_dbg("AU1200_LCD_SET_SCREEN\n");
set_global(cmd, &iodata.global);
break;
case AU1200_LCD_GET_SCREEN:
print_dbg("AU1200_LCD_GET_SCREEN\n");
get_global(cmd, &iodata.global);
break;
case AU1200_LCD_SET_WINDOW:
print_dbg("AU1200_LCD_SET_WINDOW\n");
set_window(plane, &iodata.window);
break;
case AU1200_LCD_GET_WINDOW:
print_dbg("AU1200_LCD_GET_WINDOW\n");
get_window(plane, &iodata.window);
break;
case AU1200_LCD_SET_PANEL:
print_dbg("AU1200_LCD_SET_PANEL\n");
if ((iodata.global.panel_choice >= 0) &&
(iodata.global.panel_choice <
NUM_PANELS))
{
struct panel_settings *newpanel;
panel_index = iodata.global.panel_choice;
newpanel = &known_lcd_panels[panel_index];
au1200_setpanel(newpanel, fbdev->pd);
}
break;
case AU1200_LCD_GET_PANEL:
print_dbg("AU1200_LCD_GET_PANEL\n");
iodata.global.panel_choice = panel_index;
break;
default:
return -EINVAL;
}
val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata));
if (val) {
print_dbg("error: could not copy %d bytes\n", val);
return -EFAULT;
}
}
return 0;
}
static struct fb_ops au1200fb_fb_ops = {
.owner = THIS_MODULE,
.fb_check_var = au1200fb_fb_check_var,
.fb_set_par = au1200fb_fb_set_par,
.fb_setcolreg = au1200fb_fb_setcolreg,
.fb_blank = au1200fb_fb_blank,
.fb_fillrect = sys_fillrect,
.fb_copyarea = sys_copyarea,
.fb_imageblit = sys_imageblit,
.fb_read = fb_sys_read,
.fb_write = fb_sys_write,
.fb_sync = NULL,
.fb_ioctl = au1200fb_ioctl,
.fb_mmap = au1200fb_fb_mmap,
};
/*-------------------------------------------------------------------------*/
static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id)
{
/* Nothing to do for now, just clear any pending interrupt */
lcd->intstatus = lcd->intstatus;
wmb(); /* drain writebuffer */
return IRQ_HANDLED;
}
/*-------------------------------------------------------------------------*/
/* AU1200 LCD device probe helpers */
static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
{
struct fb_info *fbi = fbdev->fb_info;
int bpp, ret;
fbi->fbops = &au1200fb_fb_ops;
bpp = winbpp(win->w[fbdev->plane].mode_winctrl1);
/* Copy monitor specs from panel data */
/* fixme: we're setting up LCD controller windows, so these dont give a
damn as to what the monitor specs are (the panel itself does, but that
isn't done here...so maybe need a generic catchall monitor setting??? */
memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs));
/* We first try the user mode passed in argument. If that failed,
* or if no one has been specified, we default to the first mode of the
* panel list. Note that after this call, var data will be set */
if (!fb_find_mode(&fbi->var,
fbi,
NULL, /* drv_info.opt_mode, */
fbi->monspecs.modedb,
fbi->monspecs.modedb_len,
fbi->monspecs.modedb,
bpp)) {
print_err("Cannot find valid mode for panel %s", panel->name);
return -EFAULT;
}
fbi->pseudo_palette = kcalloc(16, sizeof(u32), GFP_KERNEL);
if (!fbi->pseudo_palette)
return -ENOMEM;
ret = fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0);
if (ret < 0) {
print_err("Fail to allocate colormap (%d entries)",
AU1200_LCD_NBR_PALETTE_ENTRIES);
return ret;
}
strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
fbi->fix.smem_start = fbdev->fb_phys;
fbi->fix.smem_len = fbdev->fb_len;
fbi->fix.type = FB_TYPE_PACKED_PIXELS;
fbi->fix.xpanstep = 0;
fbi->fix.ypanstep = 0;
fbi->fix.mmio_start = 0;
fbi->fix.mmio_len = 0;
fbi->fix.accel = FB_ACCEL_NONE;
fbi->screen_base = (char __iomem *) fbdev->fb_mem;
au1200fb_update_fbinfo(fbi);
return 0;
}
/*-------------------------------------------------------------------------*/
static int au1200fb_setup(struct au1200fb_platdata *pd)
{
char *options = NULL;
char *this_opt, *endptr;
int num_panels = ARRAY_SIZE(known_lcd_panels);
int panel_idx = -1;
fb_get_options(DRIVER_NAME, &options);
if (!options)
goto out;
while ((this_opt = strsep(&options, ",")) != NULL) {
/* Panel option - can be panel name,
* "bs" for board-switch, or number/index */
if (!strncmp(this_opt, "panel:", 6)) {
int i;
long int li;
char *endptr;
this_opt += 6;
/* First check for index, which allows
* to short circuit this mess */
li = simple_strtol(this_opt, &endptr, 0);
if (*endptr == '\0')
panel_idx = (int)li;
else if (strcmp(this_opt, "bs") == 0)
panel_idx = pd->panel_index();
else {
for (i = 0; i < num_panels; i++) {
if (!strcmp(this_opt,
known_lcd_panels[i].name)) {
panel_idx = i;
break;
}
}
}
if ((panel_idx < 0) || (panel_idx >= num_panels))
print_warn("Panel %s not supported!", this_opt);
else
panel_index = panel_idx;
} else if (strncmp(this_opt, "nohwcursor", 10) == 0)
nohwcursor = 1;
else if (strncmp(this_opt, "devices:", 8) == 0) {
this_opt += 8;
device_count = simple_strtol(this_opt, &endptr, 0);
if ((device_count < 0) ||
(device_count > MAX_DEVICE_COUNT))
device_count = MAX_DEVICE_COUNT;
} else if (strncmp(this_opt, "wincfg:", 7) == 0) {
this_opt += 7;
window_index = simple_strtol(this_opt, &endptr, 0);
if ((window_index < 0) ||
(window_index >= ARRAY_SIZE(windows)))
window_index = DEFAULT_WINDOW_INDEX;
} else if (strncmp(this_opt, "off", 3) == 0)
return 1;
else
print_warn("Unsupported option \"%s\"", this_opt);
}
out:
return 0;
}
/* AU1200 LCD controller device driver */
static int au1200fb_drv_probe(struct platform_device *dev)
{
struct au1200fb_device *fbdev;
struct au1200fb_platdata *pd;
struct fb_info *fbi = NULL;
int bpp, plane, ret, irq;
print_info("" DRIVER_DESC "");
pd = dev->dev.platform_data;
if (!pd)
return -ENODEV;
/* Setup driver with options */
if (au1200fb_setup(pd))
return -ENODEV;
/* Point to the panel selected */
panel = &known_lcd_panels[panel_index];
win = &windows[window_index];
printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name);
printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name);
for (plane = 0; plane < device_count; ++plane) {
bpp = winbpp(win->w[plane].mode_winctrl1);
if (win->w[plane].xres == 0)
win->w[plane].xres = panel->Xres;
if (win->w[plane].yres == 0)
win->w[plane].yres = panel->Yres;
fbi = framebuffer_alloc(sizeof(struct au1200fb_device),
&dev->dev);
if (!fbi) {
ret = -ENOMEM;
goto failed;
}
_au1200fb_infos[plane] = fbi;
fbdev = fbi->par;
fbdev->fb_info = fbi;
fbdev->pd = pd;
fbdev->dev = &dev->dev;
fbdev->plane = plane;
/* Allocate the framebuffer to the maximum screen size */
fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8;
fbdev->fb_mem = dmam_alloc_attrs(&dev->dev,
PAGE_ALIGN(fbdev->fb_len),
&fbdev->fb_phys, GFP_KERNEL, 0);
if (!fbdev->fb_mem) {
print_err("fail to allocate framebuffer (size: %dK))",
fbdev->fb_len / 1024);
ret = -ENOMEM;
goto failed;
}
print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
/* Init FB data */
ret = au1200fb_init_fbinfo(fbdev);
if (ret < 0)
goto failed;
/* Register new framebuffer */
ret = register_framebuffer(fbi);
if (ret < 0) {
print_err("cannot register new framebuffer");
goto failed;
}
au1200fb_fb_set_par(fbi);
#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
if (plane == 0)
if (fb_prepare_logo(fbi, FB_ROTATE_UR)) {
/* Start display and show logo on boot */
fb_set_cmap(&fbi->cmap, fbi);
fb_show_logo(fbi, FB_ROTATE_UR);
}
#endif
}
/* Now hook interrupt too */
irq = platform_get_irq(dev, 0);
if (irq < 0)
return irq;
ret = request_irq(irq, au1200fb_handle_irq,
IRQF_SHARED, "lcd", (void *)dev);
if (ret) {
print_err("fail to request interrupt line %d (err: %d)",
irq, ret);
goto failed;
}
platform_set_drvdata(dev, pd);
/* Kickstart the panel */
au1200_setpanel(panel, pd);
return 0;
failed:
for (plane = 0; plane < device_count; ++plane) {
fbi = _au1200fb_infos[plane];
if (!fbi)
break;
/* Clean up all probe data */
unregister_framebuffer(fbi);
if (fbi->cmap.len != 0)
fb_dealloc_cmap(&fbi->cmap);
kfree(fbi->pseudo_palette);
framebuffer_release(fbi);
_au1200fb_infos[plane] = NULL;
}
return ret;
}
static int au1200fb_drv_remove(struct platform_device *dev)
{
struct au1200fb_platdata *pd = platform_get_drvdata(dev);
struct fb_info *fbi;
int plane;
/* Turn off the panel */
au1200_setpanel(NULL, pd);
for (plane = 0; plane < device_count; ++plane) {
fbi = _au1200fb_infos[plane];
/* Clean up all probe data */
unregister_framebuffer(fbi);
if (fbi->cmap.len != 0)
fb_dealloc_cmap(&fbi->cmap);
kfree(fbi->pseudo_palette);
framebuffer_release(fbi);
_au1200fb_infos[plane] = NULL;
}
free_irq(platform_get_irq(dev, 0), (void *)dev);
return 0;
}
#ifdef CONFIG_PM
static int au1200fb_drv_suspend(struct device *dev)
{
struct au1200fb_platdata *pd = dev_get_drvdata(dev);
au1200_setpanel(NULL, pd);
lcd->outmask = 0;
wmb(); /* drain writebuffer */
return 0;
}
static int au1200fb_drv_resume(struct device *dev)
{
struct au1200fb_platdata *pd = dev_get_drvdata(dev);
struct fb_info *fbi;
int i;
/* Kickstart the panel */
au1200_setpanel(panel, pd);
for (i = 0; i < device_count; i++) {
fbi = _au1200fb_infos[i];
au1200fb_fb_set_par(fbi);
}
return 0;
}
static const struct dev_pm_ops au1200fb_pmops = {
.suspend = au1200fb_drv_suspend,
.resume = au1200fb_drv_resume,
.freeze = au1200fb_drv_suspend,
.thaw = au1200fb_drv_resume,
};
#define AU1200FB_PMOPS (&au1200fb_pmops)
#else
#define AU1200FB_PMOPS NULL
#endif /* CONFIG_PM */
static struct platform_driver au1200fb_driver = {
.driver = {
.name = "au1200-lcd",
.pm = AU1200FB_PMOPS,
},
.probe = au1200fb_drv_probe,
.remove = au1200fb_drv_remove,
};
module_platform_driver(au1200fb_driver);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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