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linux/drivers/video/fbdev/au1200fb.c
Jani Nikula 8a48ac3393 video: constify fb ops across all drivers 
Now that the fbops member of struct fb_info is const, we can start
making the ops const as well.

This does not cover all drivers; some actually modify the fbops struct,
for example to adjust for different configurations, and others do more
involved things that I'd rather not touch in practically obsolete
drivers. Mostly this is the low hanging fruit where we can add "const"
and be done with it.

v3:
- un-constify atyfb, mb862xx, nvidia and uvesabf (0day)

v2:
- fix typo (Christophe de Dinechin)
- use "static const" instead of "const static" in mx3fb.c
- also constify smscufx.c

Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ce67f14435f3af498f2e8bf35ce4be11f7504132.1575390740.git.jani.nikula@intel.com
2019-12-05 10:57:53 +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;
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 const 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);
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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