diff options
Diffstat (limited to 'drivers/video/fbdev/bf54x-lq043fb.c')
| -rw-r--r-- | drivers/video/fbdev/bf54x-lq043fb.c | 764 |
1 files changed, 0 insertions, 764 deletions
diff --git a/drivers/video/fbdev/bf54x-lq043fb.c b/drivers/video/fbdev/bf54x-lq043fb.c deleted file mode 100644 index 8f1f97c75619..000000000000 --- a/drivers/video/fbdev/bf54x-lq043fb.c +++ /dev/null @@ -1,764 +0,0 @@ -/* - * File: drivers/video/bf54x-lq043.c - * Based on: - * Author: Michael Hennerich <hennerich@blackfin.uclinux.org> - * - * Created: - * Description: ADSP-BF54x Framebuffer driver - * - * - * Modified: - * Copyright 2007-2008 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/mm.h> -#include <linux/tty.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/ioport.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/interrupt.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/device.h> -#include <linux/backlight.h> -#include <linux/lcd.h> -#include <linux/spinlock.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> - -#include <asm/blackfin.h> -#include <asm/irq.h> -#include <asm/dpmc.h> -#include <asm/dma-mapping.h> -#include <asm/dma.h> -#include <asm/portmux.h> - -#include <mach/bf54x-lq043.h> - -#define NO_BL_SUPPORT - -#define DRIVER_NAME "bf54x-lq043" -static char driver_name[] = DRIVER_NAME; - -#define BFIN_LCD_NBR_PALETTE_ENTRIES 256 - -#define EPPI0_18 {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, P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, \ - P_PPI0_D11, P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15, P_PPI0_D16, P_PPI0_D17, 0} - -#define EPPI0_24 {P_PPI0_D18, P_PPI0_D19, P_PPI0_D20, P_PPI0_D21, P_PPI0_D22, P_PPI0_D23, 0} - -struct bfin_bf54xfb_info { - struct fb_info *fb; - struct device *dev; - - struct bfin_bf54xfb_mach_info *mach_info; - - unsigned char *fb_buffer; /* RGB Buffer */ - - dma_addr_t dma_handle; - int lq043_open_cnt; - int irq; - spinlock_t lock; /* lock */ -}; - -static int nocursor; -module_param(nocursor, int, 0644); -MODULE_PARM_DESC(nocursor, "cursor enable/disable"); - -static int outp_rgb666; -module_param(outp_rgb666, int, 0); -MODULE_PARM_DESC(outp_rgb666, "Output 18-bit RGB666"); - -#define LCD_X_RES 480 /*Horizontal Resolution */ -#define LCD_Y_RES 272 /* Vertical Resolution */ - -#define LCD_BPP 24 /* Bit Per Pixel */ -#define DMA_BUS_SIZE 32 - -/* -- Horizontal synchronizing -- - * - * Timing characteristics taken from the SHARP LQ043T1DG01 datasheet - * (LCY-W-06602A Page 9 of 22) - * - * Clock Frequency 1/Tc Min 7.83 Typ 9.00 Max 9.26 MHz - * - * Period TH - 525 - Clock - * Pulse width THp - 41 - Clock - * Horizontal period THd - 480 - Clock - * Back porch THb - 2 - Clock - * Front porch THf - 2 - Clock - * - * -- Vertical synchronizing -- - * Period TV - 286 - Line - * Pulse width TVp - 10 - Line - * Vertical period TVd - 272 - Line - * Back porch TVb - 2 - Line - * Front porch TVf - 2 - Line - */ - -#define LCD_CLK (8*1000*1000) /* 8MHz */ - -/* # active data to transfer after Horizontal Delay clock */ -#define EPPI_HCOUNT LCD_X_RES - -/* # active lines to transfer after Vertical Delay clock */ -#define EPPI_VCOUNT LCD_Y_RES - -/* Samples per Line = 480 (active data) + 45 (padding) */ -#define EPPI_LINE 525 - -/* Lines per Frame = 272 (active data) + 14 (padding) */ -#define EPPI_FRAME 286 - -/* FS1 (Hsync) Width (Typical)*/ -#define EPPI_FS1W_HBL 41 - -/* FS1 (Hsync) Period (Typical) */ -#define EPPI_FS1P_AVPL EPPI_LINE - -/* Horizontal Delay clock after assertion of Hsync (Typical) */ -#define EPPI_HDELAY 43 - -/* FS2 (Vsync) Width = FS1 (Hsync) Period * 10 */ -#define EPPI_FS2W_LVB (EPPI_LINE * 10) - - /* FS2 (Vsync) Period = FS1 (Hsync) Period * Lines per Frame */ -#define EPPI_FS2P_LAVF (EPPI_LINE * EPPI_FRAME) - -/* Vertical Delay after assertion of Vsync (2 Lines) */ -#define EPPI_VDELAY 12 - -#define EPPI_CLIP 0xFF00FF00 - -/* EPPI Control register configuration value for RGB out - * - EPPI as Output - * GP 2 frame sync mode, - * Internal Clock generation disabled, Internal FS generation enabled, - * Receives samples on EPPI_CLK raising edge, Transmits samples on EPPI_CLK falling edge, - * FS1 & FS2 are active high, - * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out) - * DMA Unpacking disabled when RGB Formating is enabled, otherwise DMA unpacking enabled - * Swapping Enabled, - * One (DMA) Channel Mode, - * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output - * Regular watermark - when FIFO is 100% full, - * Urgent watermark - when FIFO is 75% full - */ - -#define EPPI_CONTROL (0x20136E2E | SWAPEN) - -static inline u16 get_eppi_clkdiv(u32 target_ppi_clk) -{ - u32 sclk = get_sclk(); - - /* EPPI_CLK = (SCLK) / (2 * (EPPI_CLKDIV[15:0] + 1)) */ - - return (((sclk / target_ppi_clk) / 2) - 1); -} - -static void config_ppi(struct bfin_bf54xfb_info *fbi) -{ - - u16 eppi_clkdiv = get_eppi_clkdiv(LCD_CLK); - - bfin_write_EPPI0_FS1W_HBL(EPPI_FS1W_HBL); - bfin_write_EPPI0_FS1P_AVPL(EPPI_FS1P_AVPL); - bfin_write_EPPI0_FS2W_LVB(EPPI_FS2W_LVB); - bfin_write_EPPI0_FS2P_LAVF(EPPI_FS2P_LAVF); - bfin_write_EPPI0_CLIP(EPPI_CLIP); - - bfin_write_EPPI0_FRAME(EPPI_FRAME); - bfin_write_EPPI0_LINE(EPPI_LINE); - - bfin_write_EPPI0_HCOUNT(EPPI_HCOUNT); - bfin_write_EPPI0_HDELAY(EPPI_HDELAY); - bfin_write_EPPI0_VCOUNT(EPPI_VCOUNT); - bfin_write_EPPI0_VDELAY(EPPI_VDELAY); - - bfin_write_EPPI0_CLKDIV(eppi_clkdiv); - -/* - * DLEN = 6 (24 bits for RGB888 out) or 5 (18 bits for RGB666 out) - * RGB Formatting Enabled for RGB666 output, disabled for RGB888 output - */ - if (outp_rgb666) - bfin_write_EPPI0_CONTROL((EPPI_CONTROL & ~DLENGTH) | DLEN_18 | - RGB_FMT_EN); - else - bfin_write_EPPI0_CONTROL(((EPPI_CONTROL & ~DLENGTH) | DLEN_24) & - ~RGB_FMT_EN); - - -} - -static int config_dma(struct bfin_bf54xfb_info *fbi) -{ - - set_dma_config(CH_EPPI0, - set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO, - INTR_DISABLE, DIMENSION_2D, - DATA_SIZE_32, - DMA_NOSYNC_KEEP_DMA_BUF)); - set_dma_x_count(CH_EPPI0, (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE); - set_dma_x_modify(CH_EPPI0, DMA_BUS_SIZE / 8); - set_dma_y_count(CH_EPPI0, LCD_Y_RES); - set_dma_y_modify(CH_EPPI0, DMA_BUS_SIZE / 8); - set_dma_start_addr(CH_EPPI0, (unsigned long)fbi->fb_buffer); - - return 0; -} - -static int request_ports(struct bfin_bf54xfb_info *fbi) -{ - - u16 eppi_req_18[] = EPPI0_18; - u16 disp = fbi->mach_info->disp; - - if (gpio_request_one(disp, GPIOF_OUT_INIT_HIGH, DRIVER_NAME)) { - printk(KERN_ERR "Requesting GPIO %d failed\n", disp); - return -EFAULT; - } - - if (peripheral_request_list(eppi_req_18, DRIVER_NAME)) { - printk(KERN_ERR "Requesting Peripherals failed\n"); - gpio_free(disp); - return -EFAULT; - } - - if (!outp_rgb666) { - - u16 eppi_req_24[] = EPPI0_24; - - if (peripheral_request_list(eppi_req_24, DRIVER_NAME)) { - printk(KERN_ERR "Requesting Peripherals failed\n"); - peripheral_free_list(eppi_req_18); - gpio_free(disp); - return -EFAULT; - } - } - - return 0; -} - -static void free_ports(struct bfin_bf54xfb_info *fbi) -{ - - u16 eppi_req_18[] = EPPI0_18; - - gpio_free(fbi->mach_info->disp); - - peripheral_free_list(eppi_req_18); - - if (!outp_rgb666) { - u16 eppi_req_24[] = EPPI0_24; - peripheral_free_list(eppi_req_24); - } -} - -static int bfin_bf54x_fb_open(struct fb_info *info, int user) -{ - struct bfin_bf54xfb_info *fbi = info->par; - - spin_lock(&fbi->lock); - fbi->lq043_open_cnt++; - - if (fbi->lq043_open_cnt <= 1) { - - bfin_write_EPPI0_CONTROL(0); - SSYNC(); - - config_dma(fbi); - config_ppi(fbi); - - /* start dma */ - enable_dma(CH_EPPI0); - bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN); - } - - spin_unlock(&fbi->lock); - - return 0; -} - -static int bfin_bf54x_fb_release(struct fb_info *info, int user) -{ - struct bfin_bf54xfb_info *fbi = info->par; - - spin_lock(&fbi->lock); - - fbi->lq043_open_cnt--; - - if (fbi->lq043_open_cnt <= 0) { - - bfin_write_EPPI0_CONTROL(0); - SSYNC(); - disable_dma(CH_EPPI0); - } - - spin_unlock(&fbi->lock); - - return 0; -} - -static int bfin_bf54x_fb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - - switch (var->bits_per_pixel) { - case 24:/* TRUECOLOUR, 16m */ - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - 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_bf54x_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_bf54x_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_bf54x_fb_ops = { - .owner = THIS_MODULE, - .fb_open = bfin_bf54x_fb_open, - .fb_release = bfin_bf54x_fb_release, - .fb_check_var = bfin_bf54x_fb_check_var, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_cursor = bfin_bf54x_fb_cursor, - .fb_setcolreg = bfin_bf54x_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_bf54x_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_bf54x_irq_error(int irq, void *dev_id) -{ - /*struct bfin_bf54xfb_info *info = dev_id;*/ - - u16 status = bfin_read_EPPI0_STATUS(); - - bfin_write_EPPI0_STATUS(0xFFFF); - - if (status) { - bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN); - disable_dma(CH_EPPI0); - - /* start dma */ - enable_dma(CH_EPPI0); - bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN); - bfin_write_EPPI0_STATUS(0xFFFF); - } - - return IRQ_HANDLED; -} - -static int bfin_bf54x_probe(struct platform_device *pdev) -{ -#ifndef NO_BL_SUPPORT - struct backlight_properties props; -#endif - struct bfin_bf54xfb_info *info; - struct fb_info *fbinfo; - int ret; - - printk(KERN_INFO DRIVER_NAME ": FrameBuffer initializing...\n"); - - if (request_dma(CH_EPPI0, "CH_EPPI0") < 0) { - printk(KERN_ERR DRIVER_NAME - ": couldn't request CH_EPPI0 DMA\n"); - ret = -EFAULT; - goto out1; - } - - fbinfo = - framebuffer_alloc(sizeof(struct bfin_bf54xfb_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); - - info->mach_info = pdev->dev.platform_data; - - if (info->mach_info == NULL) { - dev_err(&pdev->dev, - "no platform data for lcd, cannot attach\n"); - ret = -EINVAL; - goto out3; - } - - 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 = info->mach_info->height; - fbinfo->var.width = info->mach_info->width; - fbinfo->var.accel_flags = 0; - fbinfo->var.vmode = FB_VMODE_NONINTERLACED; - - fbinfo->fbops = &bfin_bf54x_fb_ops; - fbinfo->flags = FBINFO_FLAG_DEFAULT; - - fbinfo->var.xres = info->mach_info->xres.defval; - fbinfo->var.xres_virtual = info->mach_info->xres.defval; - fbinfo->var.yres = info->mach_info->yres.defval; - fbinfo->var.yres_virtual = info->mach_info->yres.defval; - fbinfo->var.bits_per_pixel = info->mach_info->bpp.defval; - - fbinfo->var.upper_margin = 0; - fbinfo->var.lower_margin = 0; - fbinfo->var.vsync_len = 0; - - fbinfo->var.left_margin = 0; - fbinfo->var.right_margin = 0; - fbinfo->var.hsync_len = 0; - - fbinfo->var.red.offset = 16; - fbinfo->var.green.offset = 8; - fbinfo->var.blue.offset = 0; - 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 = info->mach_info->xres.max * - info->mach_info->yres.max * info->mach_info->bpp.max / 8; - - fbinfo->fix.line_length = fbinfo->var.xres_virtual * - fbinfo->var.bits_per_pixel / 8; - - info->fb_buffer = - dma_alloc_coherent(NULL, fbinfo->fix.smem_len, &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; - fbinfo->fix.smem_start = (int)info->fb_buffer; - - fbinfo->fbops = &bfin_bf54x_fb_ops; - - fbinfo->pseudo_palette = devm_kzalloc(&pdev->dev, sizeof(u32) * 16, - GFP_KERNEL); - if (!fbinfo->pseudo_palette) { - printk(KERN_ERR DRIVER_NAME - "Fail to allocate pseudo_palette\n"); - - ret = -ENOMEM; - goto out4; - } - - 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 (request_ports(info)) { - 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; - } - - if (request_irq(info->irq, bfin_bf54x_irq_error, 0, - "PPI ERROR", info) < 0) { - printk(KERN_ERR DRIVER_NAME - ": unable to request PPI ERROR IRQ\n"); - ret = -EFAULT; - 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("bf54x-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, &pdev->dev, 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: - free_ports(info); -out6: - fb_dealloc_cmap(&fbinfo->cmap); -out4: - dma_free_coherent(NULL, fbinfo->fix.smem_len, info->fb_buffer, - info->dma_handle); -out3: - framebuffer_release(fbinfo); -out2: - free_dma(CH_EPPI0); -out1: - - return ret; -} - -static int bfin_bf54x_remove(struct platform_device *pdev) -{ - - struct fb_info *fbinfo = platform_get_drvdata(pdev); - struct bfin_bf54xfb_info *info = fbinfo->par; - - free_dma(CH_EPPI0); - free_irq(info->irq, info); - - if (info->fb_buffer != NULL) - dma_free_coherent(NULL, fbinfo->fix.smem_len, 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 - - unregister_framebuffer(fbinfo); - - free_ports(info); - - printk(KERN_INFO DRIVER_NAME ": Unregister LCD driver.\n"); - - return 0; -} - -#ifdef CONFIG_PM -static int bfin_bf54x_suspend(struct platform_device *pdev, pm_message_t state) -{ - bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN); - disable_dma(CH_EPPI0); - bfin_write_EPPI0_STATUS(0xFFFF); - - return 0; -} - -static int bfin_bf54x_resume(struct platform_device *pdev) -{ - struct fb_info *fbinfo = platform_get_drvdata(pdev); - struct bfin_bf54xfb_info *info = fbinfo->par; - - if (info->lq043_open_cnt) { - - bfin_write_EPPI0_CONTROL(0); - SSYNC(); - - config_dma(info); - config_ppi(info); - - /* start dma */ - enable_dma(CH_EPPI0); - bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN); - } - - return 0; -} -#else -#define bfin_bf54x_suspend NULL -#define bfin_bf54x_resume NULL -#endif - -static struct platform_driver bfin_bf54x_driver = { - .probe = bfin_bf54x_probe, - .remove = bfin_bf54x_remove, - .suspend = bfin_bf54x_suspend, - .resume = bfin_bf54x_resume, - .driver = { - .name = DRIVER_NAME, - }, -}; -module_platform_driver(bfin_bf54x_driver); - -MODULE_DESCRIPTION("Blackfin BF54x TFT LCD Driver"); -MODULE_LICENSE("GPL"); |