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5c0a059eb9
passing platform data. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17051 3c298f89-4303-0410-b956-a3cf2f4a3e73
1027 lines
25 KiB
C
1027 lines
25 KiB
C
/* Smedia Glamo 336x/337x driver
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*
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* (C) 2007-2008 by Openmoko, Inc.
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* Author: Harald Welte <laforge@openmoko.org>
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/spinlock.h>
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#include <linux/io.h>
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#include <linux/mfd/glamo.h>
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#include <asm/div64.h>
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#ifdef CONFIG_PM
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#include <linux/pm.h>
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#endif
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#include <linux/glamofb.h>
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#include "glamo-regs.h"
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#include "glamo-core.h"
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static void glamofb_program_mode(struct glamofb_handle* glamo);
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struct glamofb_handle {
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struct glamo_core *core;
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struct fb_info *fb;
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struct device *dev;
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struct resource *reg;
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struct resource *fb_res;
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char __iomem *base;
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struct glamo_fb_platform_data *mach_info;
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char __iomem *cursor_addr;
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int cursor_on;
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u_int32_t pseudo_pal[16];
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spinlock_t lock_cmd;
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int blank_mode;
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int mode_set; /* 0 if the current display mode hasn't been set on the glamo */
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int output_enabled; /* 0 if the video output is disabled */
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};
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static void glamo_output_enable(struct glamofb_handle *gfb) {
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struct glamo_core *gcore = gfb->core;
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if (gfb->output_enabled)
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return;
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/* enable the pixel clock if off */
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glamo_engine_clkreg_set(gcore,
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GLAMO_ENGINE_LCD,
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GLAMO_CLOCK_LCD_EN_DCLK,
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GLAMO_CLOCK_LCD_EN_DCLK);
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gfb->output_enabled = 1;
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if (!gfb->mode_set)
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glamofb_program_mode(gfb);
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}
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static void glamo_output_disable(struct glamofb_handle *gfb) {
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struct glamo_core *gcore = gfb->core;
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if (!gfb->output_enabled)
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return;
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/* enable the pixel clock if off */
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glamo_engine_clkreg_set(gcore,
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GLAMO_ENGINE_LCD,
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GLAMO_CLOCK_LCD_EN_DCLK,
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0);
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gfb->output_enabled = 0;
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}
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static int reg_read(struct glamofb_handle *glamo,
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u_int16_t reg)
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{
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int i = 0;
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for (i = 0; i != 2; i++)
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nop();
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return readw(glamo->base + reg);
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}
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static void reg_write(struct glamofb_handle *glamo,
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u_int16_t reg, u_int16_t val)
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{
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int i = 0;
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for (i = 0; i != 2; i++)
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nop();
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writew(val, glamo->base + reg);
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}
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static struct glamo_script glamo_regs[] = {
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{ GLAMO_REG_LCD_MODE1, 0x0020 },
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/* no display rotation, no hardware cursor, no dither, no gamma,
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* no retrace flip, vsync low-active, hsync low active,
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* no TVCLK, no partial display, hw dest color from fb,
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* no partial display mode, LCD1, software flip, */
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{ GLAMO_REG_LCD_MODE2, 0x9020 },
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/* video flip, no ptr, no ptr, dhclk off,
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* normal mode, no cpuif,
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* res, serial msb first, single fb, no fr ctrl,
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* cpu if bits all zero, no crc
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* 0000 0000 0010 0000 */
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{ GLAMO_REG_LCD_MODE3, 0x0b40 },
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/* src data rgb565, res, 18bit rgb666
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* 000 01 011 0100 0000 */
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{ GLAMO_REG_LCD_POLARITY, 0x440c },
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/* DE high active, no cpu/lcd if, cs0 force low, a0 low active,
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* np cpu if, 9bit serial data, sclk rising edge latch data
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* 01 00 0 100 0 000 01 0 0 */
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/* The following values assume 640*480@16bpp */
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{ GLAMO_REG_LCD_A_BASE1, 0x0000 }, /* display A base address 15:0 */
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{ GLAMO_REG_LCD_A_BASE2, 0x0000 }, /* display A base address 22:16 */
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{ GLAMO_REG_LCD_CURSOR_BASE1, 0xC000 }, /* cursor base address 15:0 */
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{ GLAMO_REG_LCD_CURSOR_BASE2, 0x0012 }, /* cursor base address 22:16 */
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{ GLAMO_REG_LCD_COMMAND2, 0x0000 }, /* display page A */
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};
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static int glamofb_run_script(struct glamofb_handle *glamo,
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struct glamo_script *script, int len)
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{
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int i;
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if (glamo->core->suspending) {
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dev_err(&glamo->core->pdev->dev,
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"IGNORING glamofb_run_script while "
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"suspended\n");
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return -EBUSY;
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}
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for (i = 0; i < len; i++) {
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struct glamo_script *line = &script[i];
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if (line->reg == 0xffff)
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return 0;
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else if (line->reg == 0xfffe)
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msleep(line->val);
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else
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reg_write(glamo, script[i].reg, script[i].val);
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}
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return 0;
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}
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static int glamofb_check_var(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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struct glamofb_handle *glamo = info->par;
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if (glamo->core->suspending) {
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dev_err(&glamo->core->pdev->dev,
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"IGNORING glamofb_check_var while "
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"suspended\n");
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return -EBUSY;
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}
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if (var->bits_per_pixel != 16)
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var->bits_per_pixel = 16;
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var->height = glamo->mach_info->height;
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var->width = glamo->mach_info->width;
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/* FIXME: set rgb positions */
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switch (var->bits_per_pixel) {
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case 16:
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switch (reg_read(glamo, GLAMO_REG_LCD_MODE3) & 0xc000) {
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case GLAMO_LCD_SRC_RGB565:
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var->red.offset = 11;
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var->green.offset = 5;
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var->blue.offset = 0;
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var->red.length = 5;
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var->green.length = 6;
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var->blue.length = 5;
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var->transp.length = 0;
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break;
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case GLAMO_LCD_SRC_ARGB1555:
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var->transp.offset = 15;
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var->red.offset = 10;
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var->green.offset = 5;
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var->blue.offset = 0;
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var->transp.length = 1;
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var->red.length = 5;
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var->green.length = 5;
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var->blue.length = 5;
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break;
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case GLAMO_LCD_SRC_ARGB4444:
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var->transp.offset = 12;
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var->red.offset = 8;
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var->green.offset = 4;
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var->blue.offset = 0;
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var->transp.length = 4;
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var->red.length = 4;
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var->green.length = 4;
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var->blue.length = 4;
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break;
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}
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break;
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case 24:
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case 32:
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default:
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/* The Smedia Glamo doesn't support anything but 16bit color */
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printk(KERN_ERR
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"Smedia driver does not [yet?] support 24/32bpp\n");
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return -EINVAL;
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}
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return 0;
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}
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static void reg_set_bit_mask(struct glamofb_handle *glamo,
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u_int16_t reg, u_int16_t mask,
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u_int16_t val)
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{
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u_int16_t tmp;
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val &= mask;
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tmp = reg_read(glamo, reg);
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tmp &= ~mask;
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tmp |= val;
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reg_write(glamo, reg, tmp);
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}
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#define GLAMO_LCD_WIDTH_MASK 0x03FF
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#define GLAMO_LCD_HEIGHT_MASK 0x03FF
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#define GLAMO_LCD_PITCH_MASK 0x07FE
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#define GLAMO_LCD_HV_TOTAL_MASK 0x03FF
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#define GLAMO_LCD_HV_RETR_START_MASK 0x03FF
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#define GLAMO_LCD_HV_RETR_END_MASK 0x03FF
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#define GLAMO_LCD_HV_RETR_DISP_START_MASK 0x03FF
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#define GLAMO_LCD_HV_RETR_DISP_END_MASK 0x03FF
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/* the caller has to enxure lock_cmd is held and we are in cmd mode */
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static void __rotate_lcd(struct glamofb_handle *glamo, __u32 rotation)
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{
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int glamo_rot;
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if (glamo->core->suspending) {
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dev_err(&glamo->core->pdev->dev,
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"IGNORING rotate_lcd while "
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"suspended\n");
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return;
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}
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switch (rotation) {
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case FB_ROTATE_CW:
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glamo_rot = GLAMO_LCD_ROT_MODE_90;
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break;
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case FB_ROTATE_UD:
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glamo_rot = GLAMO_LCD_ROT_MODE_180;
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break;
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case FB_ROTATE_CCW:
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glamo_rot = GLAMO_LCD_ROT_MODE_270;
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break;
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default:
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glamo_rot = GLAMO_LCD_ROT_MODE_0;
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break;
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}
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reg_set_bit_mask(glamo,
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GLAMO_REG_LCD_WIDTH,
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GLAMO_LCD_ROT_MODE_MASK,
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glamo_rot);
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reg_set_bit_mask(glamo,
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GLAMO_REG_LCD_MODE1,
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GLAMO_LCD_MODE1_ROTATE_EN,
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(glamo_rot != GLAMO_LCD_ROT_MODE_0) ?
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GLAMO_LCD_MODE1_ROTATE_EN : 0);
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}
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static void glamofb_program_mode(struct glamofb_handle* gfb) {
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int sync, bp, disp, fp, total;
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unsigned long flags;
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struct glamo_core *gcore = gfb->core;
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struct fb_var_screeninfo *var = &gfb->fb->var;
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dev_dbg(&gcore->pdev->dev,
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"glamofb_program_mode spin_lock_irqsave\n");
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spin_lock_irqsave(&gfb->lock_cmd, flags);
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if (glamofb_cmd_mode(gfb, 1))
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goto out_unlock;
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if (var->pixclock)
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glamo_engine_reclock(gcore,
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GLAMO_ENGINE_LCD,
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(1000000000UL / gfb->fb->var.pixclock) * 1000);
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reg_set_bit_mask(gfb,
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GLAMO_REG_LCD_WIDTH,
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GLAMO_LCD_WIDTH_MASK,
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var->xres);
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reg_set_bit_mask(gfb,
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GLAMO_REG_LCD_HEIGHT,
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GLAMO_LCD_HEIGHT_MASK,
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var->yres);
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reg_set_bit_mask(gfb,
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GLAMO_REG_LCD_PITCH,
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GLAMO_LCD_PITCH_MASK,
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gfb->fb->fix.line_length);
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/* honour the rotation request */
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__rotate_lcd(gfb, var->rotate);
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/* update scannout timings */
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sync = 0;
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bp = sync + var->hsync_len;
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disp = bp + var->left_margin;
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fp = disp + var->xres;
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total = fp + var->right_margin;
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_TOTAL,
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GLAMO_LCD_HV_TOTAL_MASK, total);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_RETR_START,
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GLAMO_LCD_HV_RETR_START_MASK, sync);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_RETR_END,
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GLAMO_LCD_HV_RETR_END_MASK, bp);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_DISP_START,
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GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_HORIZ_DISP_END,
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GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
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sync = 0;
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bp = sync + var->vsync_len;
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disp = bp + var->upper_margin;
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fp = disp + var->yres;
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total = fp + var->lower_margin;
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_TOTAL,
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GLAMO_LCD_HV_TOTAL_MASK, total);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_RETR_START,
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GLAMO_LCD_HV_RETR_START_MASK, sync);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_RETR_END,
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GLAMO_LCD_HV_RETR_END_MASK, bp);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_DISP_START,
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GLAMO_LCD_HV_RETR_DISP_START_MASK, disp);
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reg_set_bit_mask(gfb, GLAMO_REG_LCD_VERT_DISP_END,
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GLAMO_LCD_HV_RETR_DISP_END_MASK, fp);
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glamofb_cmd_mode(gfb, 0);
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gfb->mode_set = 1;
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out_unlock:
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dev_dbg(&gcore->pdev->dev,
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"glamofb_program_mode spin_unlock_irqrestore\n");
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spin_unlock_irqrestore(&gfb->lock_cmd, flags);
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}
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static int glamofb_pan_display(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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return 0;
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}
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static struct fb_videomode *glamofb_find_mode(struct fb_info *info,
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struct fb_var_screeninfo *var) {
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struct glamofb_handle *glamo = info->par;
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struct glamo_fb_platform_data *mach_info = glamo->mach_info;
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struct fb_videomode *mode;
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int i;
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for(i = mach_info->num_modes, mode = mach_info->modes; i > 0; --i, ++mode) {
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if (mode->xres == var->xres &&
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mode->yres == var->yres)
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return mode;
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}
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return NULL;
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}
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static int glamofb_set_par(struct fb_info *info)
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{
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struct glamofb_handle *glamo = info->par;
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struct fb_var_screeninfo *var = &info->var;
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struct fb_videomode *mode;
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if (glamo->core->suspending) {
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dev_err(&glamo->core->pdev->dev,
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"IGNORING glamofb_set_par while "
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"suspended\n");
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return -EBUSY;
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}
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mode = glamofb_find_mode(info, var);
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if (!mode)
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return -EINVAL;
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fb_videomode_to_var(var, mode);
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info->mode = mode;
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glamo->mode_set = 0;
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switch(var->rotate) {
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case FB_ROTATE_CW:
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case FB_ROTATE_CCW:
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info->fix.line_length = (var->yres * var->bits_per_pixel) / 8;
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/* FIXME: Limit pixelclock */
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var->pixclock *= 2;
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break;
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default:
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info->fix.line_length = (var->xres * var->bits_per_pixel) / 8;
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break;
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}
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if(glamo->output_enabled)
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glamofb_program_mode(glamo);
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return 0;
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}
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static int glamofb_blank(int blank_mode, struct fb_info *info)
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{
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struct glamofb_handle *gfb = info->par;
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dev_dbg(gfb->dev, "glamofb_blank(%u)\n", blank_mode);
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switch (blank_mode) {
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case FB_BLANK_VSYNC_SUSPEND:
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case FB_BLANK_HSYNC_SUSPEND:
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/* FIXME: add pdata hook/flag to indicate whether
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* we should already switch off pixel clock here */
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break;
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case FB_BLANK_POWERDOWN:
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/* disable the pixel clock */
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glamo_output_disable(gfb);
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gfb->blank_mode = blank_mode;
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break;
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case FB_BLANK_UNBLANK:
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case FB_BLANK_NORMAL:
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glamo_output_enable(gfb);
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gfb->blank_mode = blank_mode;
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break;
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}
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|
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/* FIXME: once we have proper clock management in glamo-core,
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* we can determine if other units need MCLK1 or the PLL, and
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* disable it if not used. */
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return 0;
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}
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|
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static inline unsigned int chan_to_field(unsigned int chan,
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struct fb_bitfield *bf)
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{
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chan &= 0xffff;
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chan >>= 16 - bf->length;
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return chan << bf->offset;
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}
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|
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static int glamofb_setcolreg(unsigned regno,
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unsigned red, unsigned green, unsigned blue,
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unsigned transp, struct fb_info *info)
|
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{
|
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struct glamofb_handle *glamo = info->par;
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unsigned int val;
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|
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if (glamo->core->suspending) {
|
|
dev_err(&glamo->core->pdev->dev,
|
|
"IGNORING glamofb_set_par while "
|
|
"suspended\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
switch (glamo->fb->fix.visual) {
|
|
case FB_VISUAL_TRUECOLOR:
|
|
case FB_VISUAL_DIRECTCOLOR:
|
|
/* true-colour, use pseuo-palette */
|
|
|
|
if (regno < 16) {
|
|
u32 *pal = glamo->fb->pseudo_palette;
|
|
|
|
val = chan_to_field(red, &glamo->fb->var.red);
|
|
val |= chan_to_field(green, &glamo->fb->var.green);
|
|
val |= chan_to_field(blue, &glamo->fb->var.blue);
|
|
|
|
pal[regno] = val;
|
|
};
|
|
break;
|
|
default:
|
|
return 1; /* unknown type */
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int glamofb_ioctl(struct fb_info *info, unsigned int cmd,
|
|
unsigned long arg) {
|
|
struct glamofb_handle *gfb = (struct glamofb_handle*)info->par;
|
|
struct glamo_core *gcore = gfb->core;
|
|
int retval = -ENOTTY;
|
|
|
|
switch (cmd) {
|
|
case GLAMOFB_ENGINE_ENABLE:
|
|
retval = glamo_engine_enable(gcore, arg);
|
|
break;
|
|
case GLAMOFB_ENGINE_DISABLE:
|
|
retval = glamo_engine_disable(gcore, arg);
|
|
break;
|
|
case GLAMOFB_ENGINE_RESET:
|
|
glamo_engine_reset(gcore, arg);
|
|
retval = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_MFD_GLAMO_HWACCEL
|
|
static inline void glamofb_vsync_wait(struct glamofb_handle *glamo,
|
|
int line, int size, int range)
|
|
{
|
|
int count[2];
|
|
|
|
do {
|
|
count[0] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
|
|
count[1] = reg_read(glamo, GLAMO_REG_LCD_STATUS2) & 0x3ff;
|
|
} while (count[0] != count[1] ||
|
|
(line < count[0] + range &&
|
|
size > count[0] - range) ||
|
|
count[0] < range * 2);
|
|
}
|
|
|
|
/*
|
|
* Enable/disable the hardware cursor mode altogether
|
|
* (for blinking and such, use glamofb_cursor()).
|
|
*/
|
|
static void glamofb_cursor_onoff(struct glamofb_handle *glamo, int on)
|
|
{
|
|
int y, size;
|
|
|
|
if (glamo->cursor_on) {
|
|
y = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_POS);
|
|
size = reg_read(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE);
|
|
|
|
glamofb_vsync_wait(glamo, y, size, 30);
|
|
}
|
|
|
|
reg_set_bit_mask(glamo, GLAMO_REG_LCD_MODE1,
|
|
GLAMO_LCD_MODE1_CURSOR_EN,
|
|
on ? GLAMO_LCD_MODE1_CURSOR_EN : 0);
|
|
glamo->cursor_on = on;
|
|
|
|
/* Hide the cursor by default */
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE, 0);
|
|
}
|
|
|
|
static int glamofb_cursor(struct fb_info *info, struct fb_cursor *cursor)
|
|
{
|
|
struct glamofb_handle *glamo = info->par;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&glamo->lock_cmd, flags);
|
|
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_SIZE,
|
|
cursor->enable ? cursor->image.width : 0);
|
|
|
|
if (cursor->set & FB_CUR_SETPOS) {
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_X_POS,
|
|
cursor->image.dx);
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_POS,
|
|
cursor->image.dy);
|
|
}
|
|
|
|
if (cursor->set & FB_CUR_SETCMAP) {
|
|
uint16_t fg = glamo->pseudo_pal[cursor->image.fg_color];
|
|
uint16_t bg = glamo->pseudo_pal[cursor->image.bg_color];
|
|
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_FG_COLOR, fg);
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_BG_COLOR, bg);
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_DST_COLOR, fg);
|
|
}
|
|
|
|
if (cursor->set & FB_CUR_SETHOT)
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_PRESET,
|
|
(cursor->hot.x << 8) | cursor->hot.y);
|
|
|
|
if ((cursor->set & FB_CUR_SETSIZE) ||
|
|
(cursor->set & (FB_CUR_SETIMAGE | FB_CUR_SETSHAPE))) {
|
|
int x, y, pitch, op;
|
|
const uint8_t *pcol = cursor->image.data;
|
|
const uint8_t *pmsk = cursor->mask;
|
|
uint8_t __iomem *dst = glamo->cursor_addr;
|
|
uint8_t dcol = 0;
|
|
uint8_t dmsk = 0;
|
|
uint8_t byte = 0;
|
|
|
|
if (cursor->image.depth > 1) {
|
|
spin_unlock_irqrestore(&glamo->lock_cmd, flags);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pitch = ((cursor->image.width + 7) >> 2) & ~1;
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_PITCH,
|
|
pitch);
|
|
reg_write(glamo, GLAMO_REG_LCD_CURSOR_Y_SIZE,
|
|
cursor->image.height);
|
|
|
|
for (y = 0; y < cursor->image.height; y++) {
|
|
byte = 0;
|
|
for (x = 0; x < cursor->image.width; x++) {
|
|
if ((x % 8) == 0) {
|
|
dcol = *pcol++;
|
|
dmsk = *pmsk++;
|
|
} else {
|
|
dcol >>= 1;
|
|
dmsk >>= 1;
|
|
}
|
|
|
|
if (cursor->rop == ROP_COPY)
|
|
op = (dmsk & 1) ?
|
|
(dcol & 1) ? 1 : 3 : 0;
|
|
else
|
|
op = ((dmsk & 1) << 1) |
|
|
((dcol & 1) << 0);
|
|
byte |= op << ((x & 3) << 1);
|
|
|
|
if (x % 4 == 3) {
|
|
writeb(byte, dst + x / 4);
|
|
byte = 0;
|
|
}
|
|
}
|
|
if (x % 4) {
|
|
writeb(byte, dst + x / 4);
|
|
byte = 0;
|
|
}
|
|
|
|
dst += pitch;
|
|
}
|
|
}
|
|
|
|
spin_unlock_irqrestore(&glamo->lock_cmd, flags);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static inline int glamofb_cmdq_empty(struct glamofb_handle *gfb)
|
|
{
|
|
/* DGCMdQempty -- 1 == command queue is empty */
|
|
return reg_read(gfb, GLAMO_REG_LCD_STATUS1) & (1 << 15);
|
|
}
|
|
|
|
/* call holding gfb->lock_cmd when locking, until you unlock */
|
|
int glamofb_cmd_mode(struct glamofb_handle *gfb, int on)
|
|
{
|
|
int timeout = 2000000;
|
|
|
|
if (gfb->core->suspending) {
|
|
dev_err(&gfb->core->pdev->dev,
|
|
"IGNORING glamofb_cmd_mode while "
|
|
"suspended\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
dev_dbg(gfb->dev, "glamofb_cmd_mode(gfb=%p, on=%d)\n", gfb, on);
|
|
if (on) {
|
|
dev_dbg(gfb->dev, "%s: waiting for cmdq empty: ",
|
|
__func__);
|
|
while ((!glamofb_cmdq_empty(gfb)) && (timeout--))
|
|
cpu_relax();
|
|
if (timeout < 0) {
|
|
printk(KERN_ERR"*************"
|
|
"glamofb cmd_queue never got empty"
|
|
"*************\n");
|
|
return -EIO;
|
|
}
|
|
dev_dbg(gfb->dev, "empty!\n");
|
|
|
|
/* display the entire frame then switch to command */
|
|
reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
|
|
GLAMO_LCD_CMD_TYPE_DISP |
|
|
GLAMO_LCD_CMD_DATA_FIRE_VSYNC);
|
|
|
|
/* wait until lcd idle */
|
|
dev_dbg(gfb->dev, "waiting for lcd idle: ");
|
|
timeout = 2000000;
|
|
while ((!reg_read(gfb, GLAMO_REG_LCD_STATUS2) & (1 << 12)) &&
|
|
(timeout--))
|
|
cpu_relax();
|
|
if (timeout < 0) {
|
|
printk(KERN_ERR"*************"
|
|
"glamofb lcd never idle"
|
|
"*************\n");
|
|
return -EIO;
|
|
}
|
|
|
|
mdelay(100);
|
|
|
|
dev_dbg(gfb->dev, "cmd mode entered\n");
|
|
|
|
} else {
|
|
/* RGB interface needs vsync/hsync */
|
|
if (reg_read(gfb, GLAMO_REG_LCD_MODE3) & GLAMO_LCD_MODE3_RGB)
|
|
reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
|
|
GLAMO_LCD_CMD_TYPE_DISP |
|
|
GLAMO_LCD_CMD_DATA_DISP_SYNC);
|
|
|
|
reg_write(gfb, GLAMO_REG_LCD_COMMAND1,
|
|
GLAMO_LCD_CMD_TYPE_DISP |
|
|
GLAMO_LCD_CMD_DATA_DISP_FIRE);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(glamofb_cmd_mode);
|
|
|
|
|
|
int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val)
|
|
{
|
|
int timeout = 200000;
|
|
|
|
if (gfb->core->suspending) {
|
|
dev_err(&gfb->core->pdev->dev,
|
|
"IGNORING glamofb_cmd_write while "
|
|
"suspended\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
dev_dbg(gfb->dev, "%s: waiting for cmdq empty\n", __func__);
|
|
while ((!glamofb_cmdq_empty(gfb)) && (timeout--))
|
|
yield();
|
|
if (timeout < 0) {
|
|
printk(KERN_ERR"*************"
|
|
"glamofb cmd_queue never got empty"
|
|
"*************\n");
|
|
return 1;
|
|
}
|
|
dev_dbg(gfb->dev, "idle, writing 0x%04x\n", val);
|
|
|
|
reg_write(gfb, GLAMO_REG_LCD_COMMAND1, val);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(glamofb_cmd_write);
|
|
|
|
static struct fb_ops glamofb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_check_var = glamofb_check_var,
|
|
.fb_pan_display = glamofb_pan_display,
|
|
.fb_set_par = glamofb_set_par,
|
|
.fb_blank = glamofb_blank,
|
|
.fb_setcolreg = glamofb_setcolreg,
|
|
.fb_ioctl = glamofb_ioctl,
|
|
#ifdef CONFIG_MFD_GLAMO_HWACCEL
|
|
.fb_cursor = glamofb_cursor,
|
|
#endif
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
};
|
|
|
|
static int glamofb_init_regs(struct glamofb_handle *glamo)
|
|
{
|
|
struct fb_info *info = glamo->fb;
|
|
|
|
glamofb_check_var(&info->var, info);
|
|
glamofb_run_script(glamo, glamo_regs, ARRAY_SIZE(glamo_regs));
|
|
glamofb_set_par(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init glamofb_probe(struct platform_device *pdev)
|
|
{
|
|
int rc = -EIO;
|
|
struct fb_info *fbinfo;
|
|
struct glamofb_handle *glamofb;
|
|
struct glamo_core *core = dev_get_drvdata(pdev->dev.parent);
|
|
struct glamo_fb_platform_data *mach_info;
|
|
|
|
printk(KERN_INFO "SMEDIA Glamo frame buffer driver (C) 2007 "
|
|
"Openmoko, Inc.\n");
|
|
|
|
if (!core->pdata || !core->pdata->fb_data)
|
|
return -ENOENT;
|
|
|
|
|
|
fbinfo = framebuffer_alloc(sizeof(struct glamofb_handle), &pdev->dev);
|
|
if (!fbinfo)
|
|
return -ENOMEM;
|
|
|
|
|
|
glamofb = fbinfo->par;
|
|
glamofb->fb = fbinfo;
|
|
glamofb->dev = &pdev->dev;
|
|
|
|
glamofb->blank_mode = FB_BLANK_POWERDOWN;
|
|
|
|
strcpy(fbinfo->fix.id, "SMedia Glamo");
|
|
|
|
glamofb->reg = platform_get_resource_byname(pdev, IORESOURCE_MEM,
|
|
"glamo-fb-regs");
|
|
if (!glamofb->reg) {
|
|
dev_err(&pdev->dev, "platform device with no registers?\n");
|
|
rc = -ENOENT;
|
|
goto out_free;
|
|
}
|
|
|
|
glamofb->fb_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
|
|
"glamo-fb-mem");
|
|
if (!glamofb->fb_res) {
|
|
dev_err(&pdev->dev, "platform device with no memory ?\n");
|
|
rc = -ENOENT;
|
|
goto out_free;
|
|
}
|
|
|
|
glamofb->reg = request_mem_region(glamofb->reg->start,
|
|
resource_size(glamofb->reg), pdev->name);
|
|
if (!glamofb->reg) {
|
|
dev_err(&pdev->dev, "failed to request mmio region\n");
|
|
goto out_free;
|
|
}
|
|
|
|
glamofb->fb_res = request_mem_region(glamofb->fb_res->start,
|
|
resource_size(glamofb->fb_res),
|
|
pdev->name);
|
|
if (!glamofb->fb_res) {
|
|
dev_err(&pdev->dev, "failed to request vram region\n");
|
|
goto out_release_reg;
|
|
}
|
|
|
|
/* we want to remap only the registers required for this core
|
|
* driver. */
|
|
glamofb->base = ioremap_nocache(glamofb->reg->start, resource_size(glamofb->reg));
|
|
if (!glamofb->base) {
|
|
dev_err(&pdev->dev, "failed to ioremap() mmio memory\n");
|
|
goto out_release_fb;
|
|
}
|
|
|
|
fbinfo->fix.smem_start = (unsigned long) glamofb->fb_res->start;
|
|
fbinfo->fix.smem_len = (__u32) resource_size(glamofb->fb_res);
|
|
|
|
fbinfo->screen_base = ioremap(glamofb->fb_res->start,
|
|
resource_size(glamofb->fb_res));
|
|
if (!fbinfo->screen_base) {
|
|
dev_err(&pdev->dev, "failed to ioremap() vram memory\n");
|
|
goto out_release_fb;
|
|
}
|
|
glamofb->cursor_addr = fbinfo->screen_base + 0x12C000;
|
|
|
|
platform_set_drvdata(pdev, glamofb);
|
|
|
|
mach_info = core->pdata->fb_data;
|
|
glamofb->core = core;
|
|
glamofb->mach_info = mach_info;
|
|
|
|
fbinfo->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
fbinfo->fix.type_aux = 0;
|
|
fbinfo->fix.xpanstep = 0;
|
|
fbinfo->fix.ypanstep = 0;
|
|
fbinfo->fix.ywrapstep = 0;
|
|
fbinfo->fix.accel = FB_ACCEL_GLAMO;
|
|
|
|
|
|
fbinfo->fbops = &glamofb_ops;
|
|
fbinfo->flags = FBINFO_FLAG_DEFAULT;
|
|
fbinfo->pseudo_palette = &glamofb->pseudo_pal;
|
|
|
|
fbinfo->mode = mach_info->modes;
|
|
fb_videomode_to_var(&fbinfo->var, fbinfo->mode);
|
|
fbinfo->var.bits_per_pixel = 16;
|
|
fbinfo->var.nonstd = 0;
|
|
fbinfo->var.activate = FB_ACTIVATE_NOW;
|
|
fbinfo->var.height = mach_info->height;
|
|
fbinfo->var.width = mach_info->width;
|
|
fbinfo->var.accel_flags = 0;
|
|
fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
|
|
|
|
glamo_engine_enable(core, GLAMO_ENGINE_LCD);
|
|
glamo_engine_reset(core, GLAMO_ENGINE_LCD);
|
|
glamofb->output_enabled = 1;
|
|
glamofb->mode_set = 1;
|
|
|
|
dev_info(&pdev->dev, "spin_lock_init\n");
|
|
spin_lock_init(&glamofb->lock_cmd);
|
|
glamofb_init_regs(glamofb);
|
|
#ifdef CONFIG_MFD_GLAMO_HWACCEL
|
|
glamofb_cursor_onoff(glamofb, 1);
|
|
#endif
|
|
|
|
fb_videomode_to_modelist(mach_info->modes, mach_info->num_modes,
|
|
&fbinfo->modelist);
|
|
|
|
rc = register_framebuffer(fbinfo);
|
|
if (rc < 0) {
|
|
dev_err(&pdev->dev, "failed to register framebuffer\n");
|
|
goto out_unmap_fb;
|
|
}
|
|
|
|
printk(KERN_INFO "fb%d: %s frame buffer device\n",
|
|
fbinfo->node, fbinfo->fix.id);
|
|
|
|
return 0;
|
|
|
|
out_unmap_fb:
|
|
iounmap(fbinfo->screen_base);
|
|
iounmap(glamofb->base);
|
|
out_release_fb:
|
|
release_mem_region(glamofb->fb_res->start, resource_size(glamofb->fb_res));
|
|
out_release_reg:
|
|
release_mem_region(glamofb->reg->start, resource_size(glamofb->reg));
|
|
out_free:
|
|
framebuffer_release(fbinfo);
|
|
return rc;
|
|
}
|
|
|
|
static int glamofb_remove(struct platform_device *pdev)
|
|
{
|
|
struct glamofb_handle *glamofb = platform_get_drvdata(pdev);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
iounmap(glamofb->base);
|
|
release_mem_region(glamofb->reg->start, resource_size(glamofb->reg));
|
|
kfree(glamofb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int glamofb_suspend(struct device *dev)
|
|
{
|
|
struct glamofb_handle *gfb = dev_get_drvdata(dev);
|
|
|
|
/* we need to stop anything touching our framebuffer */
|
|
fb_set_suspend(gfb->fb, 1);
|
|
|
|
/* seriously -- nobody is allowed to touch glamo memory when we
|
|
* are suspended or we lock on nWAIT
|
|
*/
|
|
/* iounmap(gfb->fb->screen_base); */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int glamofb_resume(struct device *dev)
|
|
{
|
|
struct glamofb_handle *gfb = dev_get_drvdata(dev);
|
|
|
|
/* OK let's allow framebuffer ops again */
|
|
/* gfb->fb->screen_base = ioremap(gfb->fb_res->start,
|
|
resource_size(gfb->fb_res)); */
|
|
glamo_engine_enable(gfb->core, GLAMO_ENGINE_LCD);
|
|
glamo_engine_reset(gfb->core, GLAMO_ENGINE_LCD);
|
|
|
|
glamofb_init_regs(gfb);
|
|
#ifdef CONFIG_MFD_GLAMO_HWACCEL
|
|
glamofb_cursor_onoff(gfb, 1);
|
|
#endif
|
|
|
|
fb_set_suspend(gfb->fb, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dev_pm_ops glamofb_pm_ops = {
|
|
.suspend = glamofb_suspend,
|
|
.resume = glamofb_resume,
|
|
};
|
|
|
|
#define GLAMOFB_PM_OPS (&glamofb_pm_ops)
|
|
|
|
#else
|
|
#define GLAMOFB_PM_OPS NULL
|
|
#endif
|
|
|
|
static struct platform_driver glamofb_driver = {
|
|
.probe = glamofb_probe,
|
|
.remove = glamofb_remove,
|
|
.driver = {
|
|
.name = "glamo-fb",
|
|
.owner = THIS_MODULE,
|
|
.pm = GLAMOFB_PM_OPS
|
|
},
|
|
};
|
|
|
|
static int __devinit glamofb_init(void)
|
|
{
|
|
return platform_driver_register(&glamofb_driver);
|
|
}
|
|
|
|
static void __exit glamofb_cleanup(void)
|
|
{
|
|
platform_driver_unregister(&glamofb_driver);
|
|
}
|
|
|
|
module_init(glamofb_init);
|
|
module_exit(glamofb_cleanup);
|
|
|
|
MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
|
|
MODULE_DESCRIPTION("Smedia Glamo 336x/337x framebuffer driver");
|
|
MODULE_LICENSE("GPL");
|