diff options
Diffstat (limited to 'drivers/video/fbdev/bf537-lq035.c')
| -rw-r--r-- | drivers/video/fbdev/bf537-lq035.c | 891 |
1 files changed, 0 insertions, 891 deletions
diff --git a/drivers/video/fbdev/bf537-lq035.c b/drivers/video/fbdev/bf537-lq035.c deleted file mode 100644 index ef29fb425122..000000000000 --- a/drivers/video/fbdev/bf537-lq035.c +++ /dev/null @@ -1,891 +0,0 @@ -/* - * Analog Devices Blackfin(BF537 STAMP) + SHARP TFT LCD. - * http://docs.blackfin.uclinux.org/doku.php?id=hw:cards:tft-lcd - * - * Copyright 2006-2010 Analog Devices Inc. - * Licensed under the GPL-2. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/ioport.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/gpio.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/i2c.h> -#include <linux/spinlock.h> -#include <linux/dma-mapping.h> -#include <linux/slab.h> -#include <linux/platform_device.h> - -#include <asm/blackfin.h> -#include <asm/irq.h> -#include <asm/dpmc.h> -#include <asm/dma.h> -#include <asm/portmux.h> - -#define NO_BL 1 - -#define MAX_BRIGHENESS 95 -#define MIN_BRIGHENESS 5 -#define NBR_PALETTE 256 - -static const unsigned short ppi_pins[] = { - P_PPI0_CLK, 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, 0 -}; - -static unsigned char *fb_buffer; /* RGB Buffer */ -static unsigned long *dma_desc_table; -static int t_conf_done, lq035_open_cnt; -static DEFINE_SPINLOCK(bfin_lq035_lock); - -static int landscape; -module_param(landscape, int, 0); -MODULE_PARM_DESC(landscape, - "LANDSCAPE use 320x240 instead of Native 240x320 Resolution"); - -static int bgr; -module_param(bgr, int, 0); -MODULE_PARM_DESC(bgr, - "BGR use 16-bit BGR-565 instead of RGB-565"); - -static int nocursor = 1; -module_param(nocursor, int, 0644); -MODULE_PARM_DESC(nocursor, "cursor enable/disable"); - -static unsigned long current_brightness; /* backlight */ - -/* AD5280 vcomm */ -static unsigned char vcomm_value = 150; -static struct i2c_client *ad5280_client; - -static void set_vcomm(void) -{ - int nr; - - if (!ad5280_client) - return; - - nr = i2c_smbus_write_byte_data(ad5280_client, 0x00, vcomm_value); - if (nr) - pr_err("i2c_smbus_write_byte_data fail: %d\n", nr); -} - -static int ad5280_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int ret; - if (!i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_BYTE_DATA)) { - dev_err(&client->dev, "SMBUS Byte Data not Supported\n"); - return -EIO; - } - - ret = i2c_smbus_write_byte_data(client, 0x00, vcomm_value); - if (ret) { - dev_err(&client->dev, "write fail: %d\n", ret); - return ret; - } - - ad5280_client = client; - - return 0; -} - -static int ad5280_remove(struct i2c_client *client) -{ - ad5280_client = NULL; - return 0; -} - -static const struct i2c_device_id ad5280_id[] = { - {"bf537-lq035-ad5280", 0}, - {} -}; - -MODULE_DEVICE_TABLE(i2c, ad5280_id); - -static struct i2c_driver ad5280_driver = { - .driver = { - .name = "bf537-lq035-ad5280", - }, - .probe = ad5280_probe, - .remove = ad5280_remove, - .id_table = ad5280_id, -}; - -#ifdef CONFIG_PNAV10 -#define MOD GPIO_PH13 - -#define bfin_write_TIMER_LP_CONFIG bfin_write_TIMER0_CONFIG -#define bfin_write_TIMER_LP_WIDTH bfin_write_TIMER0_WIDTH -#define bfin_write_TIMER_LP_PERIOD bfin_write_TIMER0_PERIOD -#define bfin_read_TIMER_LP_COUNTER bfin_read_TIMER0_COUNTER -#define TIMDIS_LP TIMDIS0 -#define TIMEN_LP TIMEN0 - -#define bfin_write_TIMER_SPS_CONFIG bfin_write_TIMER1_CONFIG -#define bfin_write_TIMER_SPS_WIDTH bfin_write_TIMER1_WIDTH -#define bfin_write_TIMER_SPS_PERIOD bfin_write_TIMER1_PERIOD -#define TIMDIS_SPS TIMDIS1 -#define TIMEN_SPS TIMEN1 - -#define bfin_write_TIMER_SP_CONFIG bfin_write_TIMER5_CONFIG -#define bfin_write_TIMER_SP_WIDTH bfin_write_TIMER5_WIDTH -#define bfin_write_TIMER_SP_PERIOD bfin_write_TIMER5_PERIOD -#define TIMDIS_SP TIMDIS5 -#define TIMEN_SP TIMEN5 - -#define bfin_write_TIMER_PS_CLS_CONFIG bfin_write_TIMER2_CONFIG -#define bfin_write_TIMER_PS_CLS_WIDTH bfin_write_TIMER2_WIDTH -#define bfin_write_TIMER_PS_CLS_PERIOD bfin_write_TIMER2_PERIOD -#define TIMDIS_PS_CLS TIMDIS2 -#define TIMEN_PS_CLS TIMEN2 - -#define bfin_write_TIMER_REV_CONFIG bfin_write_TIMER3_CONFIG -#define bfin_write_TIMER_REV_WIDTH bfin_write_TIMER3_WIDTH -#define bfin_write_TIMER_REV_PERIOD bfin_write_TIMER3_PERIOD -#define TIMDIS_REV TIMDIS3 -#define TIMEN_REV TIMEN3 -#define bfin_read_TIMER_REV_COUNTER bfin_read_TIMER3_COUNTER - -#define FREQ_PPI_CLK (5*1024*1024) /* PPI_CLK 5MHz */ - -#define TIMERS {P_TMR0, P_TMR1, P_TMR2, P_TMR3, P_TMR5, 0} - -#else - -#define UD GPIO_PF13 /* Up / Down */ -#define MOD GPIO_PF10 -#define LBR GPIO_PF14 /* Left Right */ - -#define bfin_write_TIMER_LP_CONFIG bfin_write_TIMER6_CONFIG -#define bfin_write_TIMER_LP_WIDTH bfin_write_TIMER6_WIDTH -#define bfin_write_TIMER_LP_PERIOD bfin_write_TIMER6_PERIOD -#define bfin_read_TIMER_LP_COUNTER bfin_read_TIMER6_COUNTER -#define TIMDIS_LP TIMDIS6 -#define TIMEN_LP TIMEN6 - -#define bfin_write_TIMER_SPS_CONFIG bfin_write_TIMER1_CONFIG -#define bfin_write_TIMER_SPS_WIDTH bfin_write_TIMER1_WIDTH -#define bfin_write_TIMER_SPS_PERIOD bfin_write_TIMER1_PERIOD -#define TIMDIS_SPS TIMDIS1 -#define TIMEN_SPS TIMEN1 - -#define bfin_write_TIMER_SP_CONFIG bfin_write_TIMER0_CONFIG -#define bfin_write_TIMER_SP_WIDTH bfin_write_TIMER0_WIDTH -#define bfin_write_TIMER_SP_PERIOD bfin_write_TIMER0_PERIOD -#define TIMDIS_SP TIMDIS0 -#define TIMEN_SP TIMEN0 - -#define bfin_write_TIMER_PS_CLS_CONFIG bfin_write_TIMER7_CONFIG -#define bfin_write_TIMER_PS_CLS_WIDTH bfin_write_TIMER7_WIDTH -#define bfin_write_TIMER_PS_CLS_PERIOD bfin_write_TIMER7_PERIOD -#define TIMDIS_PS_CLS TIMDIS7 -#define TIMEN_PS_CLS TIMEN7 - -#define bfin_write_TIMER_REV_CONFIG bfin_write_TIMER5_CONFIG -#define bfin_write_TIMER_REV_WIDTH bfin_write_TIMER5_WIDTH -#define bfin_write_TIMER_REV_PERIOD bfin_write_TIMER5_PERIOD -#define TIMDIS_REV TIMDIS5 -#define TIMEN_REV TIMEN5 -#define bfin_read_TIMER_REV_COUNTER bfin_read_TIMER5_COUNTER - -#define FREQ_PPI_CLK (6*1000*1000) /* PPI_CLK 6MHz */ -#define TIMERS {P_TMR0, P_TMR1, P_TMR5, P_TMR6, P_TMR7, 0} - -#endif - -#define LCD_X_RES 240 /* Horizontal Resolution */ -#define LCD_Y_RES 320 /* Vertical Resolution */ - -#define LCD_BBP 16 /* Bit Per Pixel */ - -/* the LCD and the DMA start counting differently; - * since one starts at 0 and the other starts at 1, - * we have a difference of 1 between START_LINES - * and U_LINES. - */ -#define START_LINES 8 /* lines for field flyback or field blanking signal */ -#define U_LINES 9 /* number of undisplayed blanking lines */ - -#define FRAMES_PER_SEC (60) - -#define DCLKS_PER_FRAME (FREQ_PPI_CLK/FRAMES_PER_SEC) -#define DCLKS_PER_LINE (DCLKS_PER_FRAME/(LCD_Y_RES+U_LINES)) - -#define PPI_CONFIG_VALUE (PORT_DIR|XFR_TYPE|DLEN_16|POLS) -#define PPI_DELAY_VALUE (0) -#define TIMER_CONFIG (PWM_OUT|PERIOD_CNT|TIN_SEL|CLK_SEL) - -#define ACTIVE_VIDEO_MEM_OFFSET (LCD_X_RES*START_LINES*(LCD_BBP/8)) -#define ACTIVE_VIDEO_MEM_SIZE (LCD_Y_RES*LCD_X_RES*(LCD_BBP/8)) -#define TOTAL_VIDEO_MEM_SIZE ((LCD_Y_RES+U_LINES)*LCD_X_RES*(LCD_BBP/8)) -#define TOTAL_DMA_DESC_SIZE (2 * sizeof(u32) * (LCD_Y_RES + U_LINES)) - -static void start_timers(void) /* CHECK with HW */ -{ - unsigned long flags; - - local_irq_save(flags); - - bfin_write_TIMER_ENABLE(TIMEN_REV); - SSYNC(); - - while (bfin_read_TIMER_REV_COUNTER() <= 11) - continue; - bfin_write_TIMER_ENABLE(TIMEN_LP); - SSYNC(); - - while (bfin_read_TIMER_LP_COUNTER() < 3) - continue; - bfin_write_TIMER_ENABLE(TIMEN_SP|TIMEN_SPS|TIMEN_PS_CLS); - SSYNC(); - t_conf_done = 1; - local_irq_restore(flags); -} - -static void config_timers(void) -{ - /* Stop timers */ - bfin_write_TIMER_DISABLE(TIMDIS_SP|TIMDIS_SPS|TIMDIS_REV| - TIMDIS_LP|TIMDIS_PS_CLS); - SSYNC(); - - /* LP, timer 6 */ - bfin_write_TIMER_LP_CONFIG(TIMER_CONFIG|PULSE_HI); - bfin_write_TIMER_LP_WIDTH(1); - - bfin_write_TIMER_LP_PERIOD(DCLKS_PER_LINE); - SSYNC(); - - /* SPS, timer 1 */ - bfin_write_TIMER_SPS_CONFIG(TIMER_CONFIG|PULSE_HI); - bfin_write_TIMER_SPS_WIDTH(DCLKS_PER_LINE*2); - bfin_write_TIMER_SPS_PERIOD((DCLKS_PER_LINE * (LCD_Y_RES+U_LINES))); - SSYNC(); - - /* SP, timer 0 */ - bfin_write_TIMER_SP_CONFIG(TIMER_CONFIG|PULSE_HI); - bfin_write_TIMER_SP_WIDTH(1); - bfin_write_TIMER_SP_PERIOD(DCLKS_PER_LINE); - SSYNC(); - - /* PS & CLS, timer 7 */ - bfin_write_TIMER_PS_CLS_CONFIG(TIMER_CONFIG); - bfin_write_TIMER_PS_CLS_WIDTH(LCD_X_RES + START_LINES); - bfin_write_TIMER_PS_CLS_PERIOD(DCLKS_PER_LINE); - - SSYNC(); - -#ifdef NO_BL - /* REV, timer 5 */ - bfin_write_TIMER_REV_CONFIG(TIMER_CONFIG|PULSE_HI); - - bfin_write_TIMER_REV_WIDTH(DCLKS_PER_LINE); - bfin_write_TIMER_REV_PERIOD(DCLKS_PER_LINE*2); - - SSYNC(); -#endif -} - -static void config_ppi(void) -{ - bfin_write_PPI_DELAY(PPI_DELAY_VALUE); - bfin_write_PPI_COUNT(LCD_X_RES-1); - /* 0x10 -> PORT_CFG -> 2 or 3 frame syncs */ - bfin_write_PPI_CONTROL((PPI_CONFIG_VALUE|0x10) & (~POLS)); -} - -static int config_dma(void) -{ - u32 i; - - if (landscape) { - - for (i = 0; i < U_LINES; ++i) { - /* blanking lines point to first line of fb_buffer */ - dma_desc_table[2*i] = (unsigned long)&dma_desc_table[2*i+2]; - dma_desc_table[2*i+1] = (unsigned long)fb_buffer; - } - - for (i = U_LINES; i < U_LINES + LCD_Y_RES; ++i) { - /* visible lines */ - dma_desc_table[2*i] = (unsigned long)&dma_desc_table[2*i+2]; - dma_desc_table[2*i+1] = (unsigned long)fb_buffer + - (LCD_Y_RES+U_LINES-1-i)*2; - } - - /* last descriptor points to first */ - dma_desc_table[2*(LCD_Y_RES+U_LINES-1)] = (unsigned long)&dma_desc_table[0]; - - set_dma_x_count(CH_PPI, LCD_X_RES); - set_dma_x_modify(CH_PPI, LCD_Y_RES * (LCD_BBP / 8)); - set_dma_y_count(CH_PPI, 0); - set_dma_y_modify(CH_PPI, 0); - set_dma_next_desc_addr(CH_PPI, (void *)dma_desc_table[0]); - set_dma_config(CH_PPI, DMAFLOW_LARGE | NDSIZE_4 | WDSIZE_16); - - } else { - - 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); - set_dma_x_modify(CH_PPI, LCD_BBP / 8); - set_dma_y_count(CH_PPI, LCD_Y_RES+U_LINES); - set_dma_y_modify(CH_PPI, LCD_BBP / 8); - set_dma_start_addr(CH_PPI, (unsigned long) fb_buffer); - } - - return 0; -} - -static int request_ports(void) -{ - u16 tmr_req[] = TIMERS; - - /* - UD: PF13 - MOD: PF10 - LBR: PF14 - PPI_CLK: PF15 - */ - - if (peripheral_request_list(ppi_pins, KBUILD_MODNAME)) { - pr_err("requesting PPI peripheral failed\n"); - return -EBUSY; - } - - if (peripheral_request_list(tmr_req, KBUILD_MODNAME)) { - peripheral_free_list(ppi_pins); - pr_err("requesting timer peripheral failed\n"); - return -EBUSY; - } - -#if (defined(UD) && defined(LBR)) - if (gpio_request_one(UD, GPIOF_OUT_INIT_LOW, KBUILD_MODNAME)) { - pr_err("requesting GPIO %d failed\n", UD); - return -EBUSY; - } - - if (gpio_request_one(LBR, GPIOF_OUT_INIT_HIGH, KBUILD_MODNAME)) { - pr_err("requesting GPIO %d failed\n", LBR); - gpio_free(UD); - return -EBUSY; - } -#endif - - if (gpio_request_one(MOD, GPIOF_OUT_INIT_HIGH, KBUILD_MODNAME)) { - pr_err("requesting GPIO %d failed\n", MOD); -#if (defined(UD) && defined(LBR)) - gpio_free(LBR); - gpio_free(UD); -#endif - return -EBUSY; - } - - SSYNC(); - return 0; -} - -static void free_ports(void) -{ - u16 tmr_req[] = TIMERS; - - peripheral_free_list(ppi_pins); - peripheral_free_list(tmr_req); - -#if defined(UD) && defined(LBR) - gpio_free(LBR); - gpio_free(UD); -#endif - gpio_free(MOD); -} - -static struct fb_info bfin_lq035_fb; - -static struct fb_var_screeninfo bfin_lq035_fb_defined = { - .bits_per_pixel = LCD_BBP, - .activate = FB_ACTIVATE_TEST, - .xres = LCD_X_RES, /*default portrait mode RGB*/ - .yres = LCD_Y_RES, - .xres_virtual = LCD_X_RES, - .yres_virtual = LCD_Y_RES, - .height = -1, - .width = -1, - .left_margin = 0, - .right_margin = 0, - .upper_margin = 0, - .lower_margin = 0, - .red = {11, 5, 0}, - .green = {5, 6, 0}, - .blue = {0, 5, 0}, - .transp = {0, 0, 0}, -}; - -static struct fb_fix_screeninfo bfin_lq035_fb_fix = { - .id = KBUILD_MODNAME, - .smem_len = ACTIVE_VIDEO_MEM_SIZE, - .type = FB_TYPE_PACKED_PIXELS, - .visual = FB_VISUAL_TRUECOLOR, - .xpanstep = 0, - .ypanstep = 0, - .line_length = LCD_X_RES*(LCD_BBP/8), - .accel = FB_ACCEL_NONE, -}; - - -static int bfin_lq035_fb_open(struct fb_info *info, int user) -{ - unsigned long flags; - - spin_lock_irqsave(&bfin_lq035_lock, flags); - lq035_open_cnt++; - spin_unlock_irqrestore(&bfin_lq035_lock, flags); - - if (lq035_open_cnt <= 1) { - bfin_write_PPI_CONTROL(0); - SSYNC(); - - set_vcomm(); - config_dma(); - config_ppi(); - - /* start dma */ - enable_dma(CH_PPI); - SSYNC(); - bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN); - SSYNC(); - - if (!t_conf_done) { - config_timers(); - start_timers(); - } - /* gpio_set_value(MOD,1); */ - } - - return 0; -} - -static int bfin_lq035_fb_release(struct fb_info *info, int user) -{ - unsigned long flags; - - spin_lock_irqsave(&bfin_lq035_lock, flags); - lq035_open_cnt--; - spin_unlock_irqrestore(&bfin_lq035_lock, flags); - - - if (lq035_open_cnt <= 0) { - - bfin_write_PPI_CONTROL(0); - SSYNC(); - - disable_dma(CH_PPI); - } - - return 0; -} - - -static int bfin_lq035_fb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - switch (var->bits_per_pixel) { - case 16:/* DIRECTCOLOUR, 64k */ - var->red.offset = info->var.red.offset; - var->green.offset = info->var.green.offset; - var->blue.offset = info->var.blue.offset; - var->red.length = info->var.red.length; - var->green.length = info->var.green.length; - var->blue.length = info->var.blue.length; - 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; -} - -static int bfin_lq035_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_lq035_fb_setcolreg(u_int regno, u_int red, u_int green, - u_int blue, u_int transp, - struct fb_info *info) -{ - if (regno >= NBR_PALETTE) - 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 &= 0xFFFF; - - ((u32 *) (info->pseudo_palette))[regno] = value; - - } - - return 0; -} - -static struct fb_ops bfin_lq035_fb_ops = { - .owner = THIS_MODULE, - .fb_open = bfin_lq035_fb_open, - .fb_release = bfin_lq035_fb_release, - .fb_check_var = bfin_lq035_fb_check_var, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_cursor = bfin_lq035_fb_cursor, - .fb_setcolreg = bfin_lq035_fb_setcolreg, -}; - -static int bl_get_brightness(struct backlight_device *bd) -{ - return current_brightness; -} - -static const struct backlight_ops bfin_lq035fb_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 (int)vcomm_value; -} - -static int bfin_lcd_set_contrast(struct lcd_device *dev, int contrast) -{ - if (contrast > 255) - contrast = 255; - if (contrast < 0) - contrast = 0; - - vcomm_value = (unsigned char)contrast; - set_vcomm(); - return 0; -} - -static int bfin_lcd_check_fb(struct lcd_device *lcd, struct fb_info *fi) -{ - if (!fi || (fi == &bfin_lq035_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; - -static int bfin_lq035_probe(struct platform_device *pdev) -{ - struct backlight_properties props; - dma_addr_t dma_handle; - int ret; - - if (request_dma(CH_PPI, KBUILD_MODNAME)) { - pr_err("couldn't request PPI DMA\n"); - return -EFAULT; - } - - if (request_ports()) { - pr_err("couldn't request gpio port\n"); - ret = -EFAULT; - goto out_ports; - } - - fb_buffer = dma_alloc_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, - &dma_handle, GFP_KERNEL); - if (fb_buffer == NULL) { - pr_err("couldn't allocate dma buffer\n"); - ret = -ENOMEM; - goto out_dma_coherent; - } - - if (L1_DATA_A_LENGTH) - dma_desc_table = l1_data_sram_zalloc(TOTAL_DMA_DESC_SIZE); - else - dma_desc_table = dma_alloc_coherent(NULL, TOTAL_DMA_DESC_SIZE, - &dma_handle, 0); - - if (dma_desc_table == NULL) { - pr_err("couldn't allocate dma descriptor\n"); - ret = -ENOMEM; - goto out_table; - } - - bfin_lq035_fb.screen_base = (void *)fb_buffer; - bfin_lq035_fb_fix.smem_start = (int)fb_buffer; - if (landscape) { - bfin_lq035_fb_defined.xres = LCD_Y_RES; - bfin_lq035_fb_defined.yres = LCD_X_RES; - bfin_lq035_fb_defined.xres_virtual = LCD_Y_RES; - bfin_lq035_fb_defined.yres_virtual = LCD_X_RES; - - bfin_lq035_fb_fix.line_length = LCD_Y_RES*(LCD_BBP/8); - } else { - bfin_lq035_fb.screen_base += ACTIVE_VIDEO_MEM_OFFSET; - bfin_lq035_fb_fix.smem_start += ACTIVE_VIDEO_MEM_OFFSET; - } - - bfin_lq035_fb_defined.green.msb_right = 0; - bfin_lq035_fb_defined.red.msb_right = 0; - bfin_lq035_fb_defined.blue.msb_right = 0; - bfin_lq035_fb_defined.green.offset = 5; - bfin_lq035_fb_defined.green.length = 6; - bfin_lq035_fb_defined.red.length = 5; - bfin_lq035_fb_defined.blue.length = 5; - - if (bgr) { - bfin_lq035_fb_defined.red.offset = 0; - bfin_lq035_fb_defined.blue.offset = 11; - } else { - bfin_lq035_fb_defined.red.offset = 11; - bfin_lq035_fb_defined.blue.offset = 0; - } - - bfin_lq035_fb.fbops = &bfin_lq035_fb_ops; - bfin_lq035_fb.var = bfin_lq035_fb_defined; - - bfin_lq035_fb.fix = bfin_lq035_fb_fix; - bfin_lq035_fb.flags = FBINFO_DEFAULT; - - - bfin_lq035_fb.pseudo_palette = devm_kzalloc(&pdev->dev, - sizeof(u32) * 16, - GFP_KERNEL); - if (bfin_lq035_fb.pseudo_palette == NULL) { - pr_err("failed to allocate pseudo_palette\n"); - ret = -ENOMEM; - goto out_table; - } - - if (fb_alloc_cmap(&bfin_lq035_fb.cmap, NBR_PALETTE, 0) < 0) { - pr_err("failed to allocate colormap (%d entries)\n", - NBR_PALETTE); - ret = -EFAULT; - goto out_table; - } - - if (register_framebuffer(&bfin_lq035_fb) < 0) { - pr_err("unable to register framebuffer\n"); - ret = -EINVAL; - goto out_reg; - } - - i2c_add_driver(&ad5280_driver); - - memset(&props, 0, sizeof(props)); - props.type = BACKLIGHT_RAW; - props.max_brightness = MAX_BRIGHENESS; - bl_dev = backlight_device_register("bf537-bl", NULL, NULL, - &bfin_lq035fb_bl_ops, &props); - - lcd_dev = lcd_device_register(KBUILD_MODNAME, &pdev->dev, NULL, - &bfin_lcd_ops); - if (IS_ERR(lcd_dev)) { - pr_err("unable to register lcd\n"); - ret = PTR_ERR(lcd_dev); - goto out_lcd; - } - lcd_dev->props.max_contrast = 255, - - pr_info("initialized"); - - return 0; -out_lcd: - unregister_framebuffer(&bfin_lq035_fb); -out_reg: - fb_dealloc_cmap(&bfin_lq035_fb.cmap); -out_table: - dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0); - fb_buffer = NULL; -out_dma_coherent: - free_ports(); -out_ports: - free_dma(CH_PPI); - return ret; -} - -static int bfin_lq035_remove(struct platform_device *pdev) -{ - if (fb_buffer != NULL) - dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0); - - if (L1_DATA_A_LENGTH) - l1_data_sram_free(dma_desc_table); - else - dma_free_coherent(NULL, TOTAL_DMA_DESC_SIZE, NULL, 0); - - bfin_write_TIMER_DISABLE(TIMEN_SP|TIMEN_SPS|TIMEN_PS_CLS| - TIMEN_LP|TIMEN_REV); - t_conf_done = 0; - - free_dma(CH_PPI); - - - fb_dealloc_cmap(&bfin_lq035_fb.cmap); - - - lcd_device_unregister(lcd_dev); - backlight_device_unregister(bl_dev); - - unregister_framebuffer(&bfin_lq035_fb); - i2c_del_driver(&ad5280_driver); - - free_ports(); - - pr_info("unregistered LCD driver\n"); - - return 0; -} - -#ifdef CONFIG_PM -static int bfin_lq035_suspend(struct platform_device *pdev, pm_message_t state) -{ - if (lq035_open_cnt > 0) { - bfin_write_PPI_CONTROL(0); - SSYNC(); - disable_dma(CH_PPI); - } - - return 0; -} - -static int bfin_lq035_resume(struct platform_device *pdev) -{ - if (lq035_open_cnt > 0) { - bfin_write_PPI_CONTROL(0); - SSYNC(); - - config_dma(); - config_ppi(); - - enable_dma(CH_PPI); - bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN); - SSYNC(); - - config_timers(); - start_timers(); - } else { - t_conf_done = 0; - } - - return 0; -} -#else -# define bfin_lq035_suspend NULL -# define bfin_lq035_resume NULL -#endif - -static struct platform_driver bfin_lq035_driver = { - .probe = bfin_lq035_probe, - .remove = bfin_lq035_remove, - .suspend = bfin_lq035_suspend, - .resume = bfin_lq035_resume, - .driver = { - .name = KBUILD_MODNAME, - }, -}; - -static int __init bfin_lq035_driver_init(void) -{ - request_module("i2c-bfin-twi"); - return platform_driver_register(&bfin_lq035_driver); -} -module_init(bfin_lq035_driver_init); - -static void __exit bfin_lq035_driver_cleanup(void) -{ - platform_driver_unregister(&bfin_lq035_driver); -} -module_exit(bfin_lq035_driver_cleanup); - -MODULE_DESCRIPTION("SHARP LQ035Q7DB03 TFT LCD Driver"); -MODULE_LICENSE("GPL"); |