diff options
Diffstat (limited to 'drivers/video/fbdev/bfin-t350mcqb-fb.c')
| -rw-r--r-- | drivers/video/fbdev/bfin-t350mcqb-fb.c | 669 |
1 files changed, 0 insertions, 669 deletions
diff --git a/drivers/video/fbdev/bfin-t350mcqb-fb.c b/drivers/video/fbdev/bfin-t350mcqb-fb.c deleted file mode 100644 index e5ee4d9677f7..000000000000 --- a/drivers/video/fbdev/bfin-t350mcqb-fb.c +++ /dev/null @@ -1,669 +0,0 @@ -/* - * File: drivers/video/bfin-t350mcqb-fb.c - * Based on: - * Author: Michael Hennerich <hennerich@blackfin.uclinux.org> - * - * Created: - * Description: Blackfin LCD Framebuffer driver - * - * - * Modified: - * Copyright 2004-2007 Analog Devices Inc. - * - * Bugs: Enter bugs at http://blackfin.uclinux.org/ - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/gfp.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/device.h> -#include <linux/backlight.h> -#include <linux/lcd.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> - -#include <asm/blackfin.h> -#include <asm/irq.h> -#include <asm/dma-mapping.h> -#include <asm/dma.h> -#include <asm/portmux.h> -#include <asm/gptimers.h> - -#define NO_BL_SUPPORT - -#define LCD_X_RES 320 /* Horizontal Resolution */ -#define LCD_Y_RES 240 /* Vertical Resolution */ -#define LCD_BPP 24 /* Bit Per Pixel */ - -#define DMA_BUS_SIZE 16 -#define LCD_CLK (12*1000*1000) /* 12MHz */ - -#define CLOCKS_PER_PIX 3 - - /* - * HS and VS timing parameters (all in number of PPI clk ticks) - */ - -#define U_LINE 1 /* Blanking Lines */ - -#define H_ACTPIX (LCD_X_RES * CLOCKS_PER_PIX) /* active horizontal pixel */ -#define H_PERIOD (408 * CLOCKS_PER_PIX) /* HS period */ -#define H_PULSE 90 /* HS pulse width */ -#define H_START 204 /* first valid pixel */ - -#define V_LINES (LCD_Y_RES + U_LINE) /* total vertical lines */ -#define V_PULSE (3 * H_PERIOD) /* VS pulse width (1-5 H_PERIODs) */ -#define V_PERIOD (H_PERIOD * V_LINES) /* VS period */ - -#define ACTIVE_VIDEO_MEM_OFFSET (U_LINE * H_ACTPIX) - -#define BFIN_LCD_NBR_PALETTE_ENTRIES 256 - -#define DRIVER_NAME "bfin-t350mcqb" -static char driver_name[] = DRIVER_NAME; - -struct bfin_t350mcqbfb_info { - struct fb_info *fb; - struct device *dev; - unsigned char *fb_buffer; /* RGB Buffer */ - dma_addr_t dma_handle; - int lq043_open_cnt; - int irq; - spinlock_t lock; /* lock */ - u32 pseudo_pal[16]; -}; - -static int nocursor; -module_param(nocursor, int, 0644); -MODULE_PARM_DESC(nocursor, "cursor enable/disable"); - -#define PPI_TX_MODE 0x2 -#define PPI_XFER_TYPE_11 0xC -#define PPI_PORT_CFG_01 0x10 -#define PPI_PACK_EN 0x80 -#define PPI_POLS_1 0x8000 - -static void bfin_t350mcqb_config_ppi(struct bfin_t350mcqbfb_info *fbi) -{ - bfin_write_PPI_DELAY(H_START); - bfin_write_PPI_COUNT(H_ACTPIX-1); - bfin_write_PPI_FRAME(V_LINES); - - bfin_write_PPI_CONTROL(PPI_TX_MODE | /* output mode , PORT_DIR */ - PPI_XFER_TYPE_11 | /* sync mode XFR_TYPE */ - PPI_PORT_CFG_01 | /* two frame sync PORT_CFG */ - PPI_PACK_EN | /* packing enabled PACK_EN */ - PPI_POLS_1); /* faling edge syncs POLS */ -} - -static inline void bfin_t350mcqb_disable_ppi(void) -{ - bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN); -} - -static inline void bfin_t350mcqb_enable_ppi(void) -{ - bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN); -} - -static void bfin_t350mcqb_start_timers(void) -{ - unsigned long flags; - - local_irq_save(flags); - enable_gptimers(TIMER1bit); - enable_gptimers(TIMER0bit); - local_irq_restore(flags); -} - -static void bfin_t350mcqb_stop_timers(void) -{ - disable_gptimers(TIMER0bit | TIMER1bit); - - set_gptimer_status(0, TIMER_STATUS_TRUN0 | TIMER_STATUS_TRUN1 | - TIMER_STATUS_TIMIL0 | TIMER_STATUS_TIMIL1 | - TIMER_STATUS_TOVF0 | TIMER_STATUS_TOVF1); - -} - -static void bfin_t350mcqb_init_timers(void) -{ - - bfin_t350mcqb_stop_timers(); - - set_gptimer_period(TIMER0_id, H_PERIOD); - set_gptimer_pwidth(TIMER0_id, H_PULSE); - set_gptimer_config(TIMER0_id, TIMER_MODE_PWM | TIMER_PERIOD_CNT | - TIMER_TIN_SEL | TIMER_CLK_SEL| - TIMER_EMU_RUN); - - set_gptimer_period(TIMER1_id, V_PERIOD); - set_gptimer_pwidth(TIMER1_id, V_PULSE); - set_gptimer_config(TIMER1_id, TIMER_MODE_PWM | TIMER_PERIOD_CNT | - TIMER_TIN_SEL | TIMER_CLK_SEL | - TIMER_EMU_RUN); - -} - -static void bfin_t350mcqb_config_dma(struct bfin_t350mcqbfb_info *fbi) -{ - - set_dma_config(CH_PPI, - set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO, - INTR_DISABLE, DIMENSION_2D, - DATA_SIZE_16, - DMA_NOSYNC_KEEP_DMA_BUF)); - set_dma_x_count(CH_PPI, (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE); - set_dma_x_modify(CH_PPI, DMA_BUS_SIZE / 8); - set_dma_y_count(CH_PPI, V_LINES); - - set_dma_y_modify(CH_PPI, DMA_BUS_SIZE / 8); - set_dma_start_addr(CH_PPI, (unsigned long)fbi->fb_buffer); - -} - -static u16 ppi0_req_8[] = {P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2, - P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, - P_PPI0_D3, P_PPI0_D4, P_PPI0_D5, - P_PPI0_D6, P_PPI0_D7, 0}; - -static int bfin_t350mcqb_request_ports(int action) -{ - if (action) { - if (peripheral_request_list(ppi0_req_8, DRIVER_NAME)) { - printk(KERN_ERR "Requesting Peripherals failed\n"); - return -EFAULT; - } - } else - peripheral_free_list(ppi0_req_8); - - return 0; -} - -static int bfin_t350mcqb_fb_open(struct fb_info *info, int user) -{ - struct bfin_t350mcqbfb_info *fbi = info->par; - - spin_lock(&fbi->lock); - fbi->lq043_open_cnt++; - - if (fbi->lq043_open_cnt <= 1) { - - bfin_t350mcqb_disable_ppi(); - SSYNC(); - - bfin_t350mcqb_config_dma(fbi); - bfin_t350mcqb_config_ppi(fbi); - bfin_t350mcqb_init_timers(); - - /* start dma */ - enable_dma(CH_PPI); - bfin_t350mcqb_enable_ppi(); - bfin_t350mcqb_start_timers(); - } - - spin_unlock(&fbi->lock); - - return 0; -} - -static int bfin_t350mcqb_fb_release(struct fb_info *info, int user) -{ - struct bfin_t350mcqbfb_info *fbi = info->par; - - spin_lock(&fbi->lock); - - fbi->lq043_open_cnt--; - - if (fbi->lq043_open_cnt <= 0) { - bfin_t350mcqb_disable_ppi(); - SSYNC(); - disable_dma(CH_PPI); - bfin_t350mcqb_stop_timers(); - } - - spin_unlock(&fbi->lock); - - return 0; -} - -static int bfin_t350mcqb_fb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - - switch (var->bits_per_pixel) { - case 24:/* TRUECOLOUR, 16m */ - var->red.offset = 0; - var->green.offset = 8; - var->blue.offset = 16; - var->red.length = var->green.length = var->blue.length = 8; - var->transp.offset = 0; - var->transp.length = 0; - var->transp.msb_right = 0; - var->red.msb_right = 0; - var->green.msb_right = 0; - var->blue.msb_right = 0; - break; - default: - pr_debug("%s: depth not supported: %u BPP\n", __func__, - var->bits_per_pixel); - return -EINVAL; - } - - if (info->var.xres != var->xres || info->var.yres != var->yres || - info->var.xres_virtual != var->xres_virtual || - info->var.yres_virtual != var->yres_virtual) { - pr_debug("%s: Resolution not supported: X%u x Y%u \n", - __func__, var->xres, var->yres); - return -EINVAL; - } - - /* - * Memory limit - */ - - if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) { - pr_debug("%s: Memory Limit requested yres_virtual = %u\n", - __func__, var->yres_virtual); - return -ENOMEM; - } - - return 0; -} - -int bfin_t350mcqb_fb_cursor(struct fb_info *info, struct fb_cursor *cursor) -{ - if (nocursor) - return 0; - else - return -EINVAL; /* just to force soft_cursor() call */ -} - -static int bfin_t350mcqb_fb_setcolreg(u_int regno, u_int red, u_int green, - u_int blue, u_int transp, - struct fb_info *info) -{ - if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES) - return -EINVAL; - - if (info->var.grayscale) { - /* grayscale = 0.30*R + 0.59*G + 0.11*B */ - red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; - } - - if (info->fix.visual == FB_VISUAL_TRUECOLOR) { - - u32 value; - /* Place color in the pseudopalette */ - if (regno > 16) - return -EINVAL; - - red >>= (16 - info->var.red.length); - green >>= (16 - info->var.green.length); - blue >>= (16 - info->var.blue.length); - - value = (red << info->var.red.offset) | - (green << info->var.green.offset) | - (blue << info->var.blue.offset); - value &= 0xFFFFFF; - - ((u32 *) (info->pseudo_palette))[regno] = value; - - } - - return 0; -} - -static struct fb_ops bfin_t350mcqb_fb_ops = { - .owner = THIS_MODULE, - .fb_open = bfin_t350mcqb_fb_open, - .fb_release = bfin_t350mcqb_fb_release, - .fb_check_var = bfin_t350mcqb_fb_check_var, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_cursor = bfin_t350mcqb_fb_cursor, - .fb_setcolreg = bfin_t350mcqb_fb_setcolreg, -}; - -#ifndef NO_BL_SUPPORT -static int bl_get_brightness(struct backlight_device *bd) -{ - return 0; -} - -static const struct backlight_ops bfin_lq043fb_bl_ops = { - .get_brightness = bl_get_brightness, -}; - -static struct backlight_device *bl_dev; - -static int bfin_lcd_get_power(struct lcd_device *dev) -{ - return 0; -} - -static int bfin_lcd_set_power(struct lcd_device *dev, int power) -{ - return 0; -} - -static int bfin_lcd_get_contrast(struct lcd_device *dev) -{ - return 0; -} - -static int bfin_lcd_set_contrast(struct lcd_device *dev, int contrast) -{ - - return 0; -} - -static int bfin_lcd_check_fb(struct lcd_device *dev, struct fb_info *fi) -{ - if (!fi || (fi == &bfin_t350mcqb_fb)) - return 1; - return 0; -} - -static struct lcd_ops bfin_lcd_ops = { - .get_power = bfin_lcd_get_power, - .set_power = bfin_lcd_set_power, - .get_contrast = bfin_lcd_get_contrast, - .set_contrast = bfin_lcd_set_contrast, - .check_fb = bfin_lcd_check_fb, -}; - -static struct lcd_device *lcd_dev; -#endif - -static irqreturn_t bfin_t350mcqb_irq_error(int irq, void *dev_id) -{ - /*struct bfin_t350mcqbfb_info *info = (struct bfin_t350mcqbfb_info *)dev_id;*/ - - u16 status = bfin_read_PPI_STATUS(); - bfin_write_PPI_STATUS(0xFFFF); - - if (status) { - bfin_t350mcqb_disable_ppi(); - disable_dma(CH_PPI); - - /* start dma */ - enable_dma(CH_PPI); - bfin_t350mcqb_enable_ppi(); - bfin_write_PPI_STATUS(0xFFFF); - } - - return IRQ_HANDLED; -} - -static int bfin_t350mcqb_probe(struct platform_device *pdev) -{ -#ifndef NO_BL_SUPPORT - struct backlight_properties props; -#endif - struct bfin_t350mcqbfb_info *info; - struct fb_info *fbinfo; - int ret; - - printk(KERN_INFO DRIVER_NAME ": %dx%d %d-bit RGB FrameBuffer initializing...\n", - LCD_X_RES, LCD_Y_RES, LCD_BPP); - - if (request_dma(CH_PPI, "CH_PPI") < 0) { - printk(KERN_ERR DRIVER_NAME - ": couldn't request CH_PPI DMA\n"); - ret = -EFAULT; - goto out1; - } - - fbinfo = - framebuffer_alloc(sizeof(struct bfin_t350mcqbfb_info), &pdev->dev); - if (!fbinfo) { - ret = -ENOMEM; - goto out2; - } - - info = fbinfo->par; - info->fb = fbinfo; - info->dev = &pdev->dev; - spin_lock_init(&info->lock); - - platform_set_drvdata(pdev, fbinfo); - - strcpy(fbinfo->fix.id, driver_name); - - 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_NONE; - fbinfo->fix.visual = FB_VISUAL_TRUECOLOR; - - fbinfo->var.nonstd = 0; - fbinfo->var.activate = FB_ACTIVATE_NOW; - fbinfo->var.height = 53; - fbinfo->var.width = 70; - fbinfo->var.accel_flags = 0; - fbinfo->var.vmode = FB_VMODE_NONINTERLACED; - - fbinfo->var.xres = LCD_X_RES; - fbinfo->var.xres_virtual = LCD_X_RES; - fbinfo->var.yres = LCD_Y_RES; - fbinfo->var.yres_virtual = LCD_Y_RES; - fbinfo->var.bits_per_pixel = LCD_BPP; - - fbinfo->var.red.offset = 0; - fbinfo->var.green.offset = 8; - fbinfo->var.blue.offset = 16; - fbinfo->var.transp.offset = 0; - fbinfo->var.red.length = 8; - fbinfo->var.green.length = 8; - fbinfo->var.blue.length = 8; - fbinfo->var.transp.length = 0; - fbinfo->fix.smem_len = LCD_X_RES * LCD_Y_RES * LCD_BPP / 8; - - fbinfo->fix.line_length = fbinfo->var.xres_virtual * - fbinfo->var.bits_per_pixel / 8; - - - fbinfo->fbops = &bfin_t350mcqb_fb_ops; - fbinfo->flags = FBINFO_FLAG_DEFAULT; - - info->fb_buffer = dma_alloc_coherent(NULL, fbinfo->fix.smem_len + - ACTIVE_VIDEO_MEM_OFFSET, - &info->dma_handle, GFP_KERNEL); - - if (NULL == info->fb_buffer) { - printk(KERN_ERR DRIVER_NAME - ": couldn't allocate dma buffer.\n"); - ret = -ENOMEM; - goto out3; - } - - fbinfo->screen_base = (void *)info->fb_buffer + ACTIVE_VIDEO_MEM_OFFSET; - fbinfo->fix.smem_start = (int)info->fb_buffer + ACTIVE_VIDEO_MEM_OFFSET; - - fbinfo->fbops = &bfin_t350mcqb_fb_ops; - - fbinfo->pseudo_palette = &info->pseudo_pal; - - if (fb_alloc_cmap(&fbinfo->cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) - < 0) { - printk(KERN_ERR DRIVER_NAME - "Fail to allocate colormap (%d entries)\n", - BFIN_LCD_NBR_PALETTE_ENTRIES); - ret = -EFAULT; - goto out4; - } - - if (bfin_t350mcqb_request_ports(1)) { - printk(KERN_ERR DRIVER_NAME ": couldn't request gpio port.\n"); - ret = -EFAULT; - goto out6; - } - - info->irq = platform_get_irq(pdev, 0); - if (info->irq < 0) { - ret = -EINVAL; - goto out7; - } - - ret = request_irq(info->irq, bfin_t350mcqb_irq_error, 0, - "PPI ERROR", info); - if (ret < 0) { - printk(KERN_ERR DRIVER_NAME - ": unable to request PPI ERROR IRQ\n"); - goto out7; - } - - if (register_framebuffer(fbinfo) < 0) { - printk(KERN_ERR DRIVER_NAME - ": unable to register framebuffer.\n"); - ret = -EINVAL; - goto out8; - } -#ifndef NO_BL_SUPPORT - memset(&props, 0, sizeof(struct backlight_properties)); - props.type = BACKLIGHT_RAW; - props.max_brightness = 255; - bl_dev = backlight_device_register("bf52x-bl", NULL, NULL, - &bfin_lq043fb_bl_ops, &props); - if (IS_ERR(bl_dev)) { - printk(KERN_ERR DRIVER_NAME - ": unable to register backlight.\n"); - ret = -EINVAL; - unregister_framebuffer(fbinfo); - goto out8; - } - - lcd_dev = lcd_device_register(DRIVER_NAME, NULL, &bfin_lcd_ops); - lcd_dev->props.max_contrast = 255, printk(KERN_INFO "Done.\n"); -#endif - - return 0; - -out8: - free_irq(info->irq, info); -out7: - bfin_t350mcqb_request_ports(0); -out6: - fb_dealloc_cmap(&fbinfo->cmap); -out4: - dma_free_coherent(NULL, fbinfo->fix.smem_len + ACTIVE_VIDEO_MEM_OFFSET, - info->fb_buffer, info->dma_handle); -out3: - framebuffer_release(fbinfo); -out2: - free_dma(CH_PPI); -out1: - - return ret; -} - -static int bfin_t350mcqb_remove(struct platform_device *pdev) -{ - - struct fb_info *fbinfo = platform_get_drvdata(pdev); - struct bfin_t350mcqbfb_info *info = fbinfo->par; - - unregister_framebuffer(fbinfo); - - free_dma(CH_PPI); - free_irq(info->irq, info); - - if (info->fb_buffer != NULL) - dma_free_coherent(NULL, fbinfo->fix.smem_len + - ACTIVE_VIDEO_MEM_OFFSET, info->fb_buffer, - info->dma_handle); - - fb_dealloc_cmap(&fbinfo->cmap); - -#ifndef NO_BL_SUPPORT - lcd_device_unregister(lcd_dev); - backlight_device_unregister(bl_dev); -#endif - - bfin_t350mcqb_request_ports(0); - - framebuffer_release(fbinfo); - - printk(KERN_INFO DRIVER_NAME ": Unregister LCD driver.\n"); - - return 0; -} - -#ifdef CONFIG_PM -static int bfin_t350mcqb_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct fb_info *fbinfo = platform_get_drvdata(pdev); - struct bfin_t350mcqbfb_info *fbi = fbinfo->par; - - if (fbi->lq043_open_cnt) { - bfin_t350mcqb_disable_ppi(); - disable_dma(CH_PPI); - bfin_t350mcqb_stop_timers(); - bfin_write_PPI_STATUS(-1); - } - - - return 0; -} - -static int bfin_t350mcqb_resume(struct platform_device *pdev) -{ - struct fb_info *fbinfo = platform_get_drvdata(pdev); - struct bfin_t350mcqbfb_info *fbi = fbinfo->par; - - if (fbi->lq043_open_cnt) { - bfin_t350mcqb_config_dma(fbi); - bfin_t350mcqb_config_ppi(fbi); - bfin_t350mcqb_init_timers(); - - /* start dma */ - enable_dma(CH_PPI); - bfin_t350mcqb_enable_ppi(); - bfin_t350mcqb_start_timers(); - } - - return 0; -} -#else -#define bfin_t350mcqb_suspend NULL -#define bfin_t350mcqb_resume NULL -#endif - -static struct platform_driver bfin_t350mcqb_driver = { - .probe = bfin_t350mcqb_probe, - .remove = bfin_t350mcqb_remove, - .suspend = bfin_t350mcqb_suspend, - .resume = bfin_t350mcqb_resume, - .driver = { - .name = DRIVER_NAME, - }, -}; -module_platform_driver(bfin_t350mcqb_driver); - -MODULE_DESCRIPTION("Blackfin TFT LCD Driver"); -MODULE_LICENSE("GPL"); |