diff options
Diffstat (limited to 'drivers/video/mxc/mxcfb_seiko_wvga.c')
| -rw-r--r-- | drivers/video/mxc/mxcfb_seiko_wvga.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/drivers/video/mxc/mxcfb_seiko_wvga.c b/drivers/video/mxc/mxcfb_seiko_wvga.c new file mode 100644 index 000000000000..9b3e9fddafe7 --- /dev/null +++ b/drivers/video/mxc/mxcfb_seiko_wvga.c @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * 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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +/*! + * @defgroup Framebuffer Framebuffer Driver for SDC and ADC. + */ + +/*! + * @file mxcfb_seiko_wvga.c + * + * @brief MXC Frame buffer driver for SDC + * + * @ingroup Framebuffer + */ + +/*! + * Include files + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/fb.h> +#include <linux/fsl_devices.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/mxcfb.h> +#include <linux/regulator/consumer.h> +#include <mach/hardware.h> + +static void lcd_poweron(void); +static void lcd_poweroff(void); + +static struct platform_device *plcd_dev; +static struct regulator *io_reg; +static struct regulator *core_reg; +static int lcd_on; + +static struct fb_videomode video_modes[] = { + { + /* 800x480 @ 57 Hz , pixel clk @ 32MHz */ + "SEIKO-WVGA", 60, 800, 480, 29850, 99, 164, 33, 10, 10, 10, + FB_SYNC_CLK_LAT_FALL, + FB_VMODE_NONINTERLACED, + 0,}, +}; + +static void lcd_init_fb(struct fb_info *info) +{ + struct fb_var_screeninfo var; + + memset(&var, 0, sizeof(var)); + + fb_videomode_to_var(&var, &video_modes[0]); + + var.activate = FB_ACTIVATE_ALL; + var.yres_virtual = var.yres * 3; + + acquire_console_sem(); + info->flags |= FBINFO_MISC_USEREVENT; + fb_set_var(info, &var); + info->flags &= ~FBINFO_MISC_USEREVENT; + release_console_sem(); +} + +static int lcd_fb_event(struct notifier_block *nb, unsigned long val, void *v) +{ + struct fb_event *event = v; + + if (strcmp(event->info->fix.id, "mxc_elcdif_fb")) + return 0; + + switch (val) { + case FB_EVENT_FB_REGISTERED: + lcd_init_fb(event->info); + fb_show_logo(event->info, 0); + lcd_poweron(); + break; + case FB_EVENT_BLANK: + if ((event->info->var.xres != 800) || + (event->info->var.yres != 480)) { + break; + } + if (*((int *)event->data) == FB_BLANK_UNBLANK) + lcd_poweron(); + else + lcd_poweroff(); + break; + } + return 0; +} + +static struct notifier_block nb = { + .notifier_call = lcd_fb_event, +}; + +/*! + * This function is called whenever the platform device is detected. + * + * @param pdev the platform device + * + * @return Returns 0 on SUCCESS and error on FAILURE. + */ +static int __devinit lcd_probe(struct platform_device *pdev) +{ + int i; + struct mxc_lcd_platform_data *plat = pdev->dev.platform_data; + + if (plat) { + if (plat->reset) + plat->reset(); + + io_reg = regulator_get(&pdev->dev, plat->io_reg); + if (IS_ERR(io_reg)) + io_reg = NULL; + core_reg = regulator_get(&pdev->dev, plat->core_reg); + if (!IS_ERR(core_reg)) + regulator_set_voltage(io_reg, 1800000, 1800000); + else + core_reg = NULL; + } + + for (i = 0; i < num_registered_fb; i++) { + if (strcmp(registered_fb[i]->fix.id, "mxc_elcdif_fb") == 0) { + lcd_init_fb(registered_fb[i]); + fb_show_logo(registered_fb[i], 0); + lcd_poweron(); + } + } + + fb_register_client(&nb); + + plcd_dev = pdev; + + return 0; +} + +static int __devexit lcd_remove(struct platform_device *pdev) +{ + fb_unregister_client(&nb); + lcd_poweroff(); + if (io_reg) + regulator_put(io_reg); + if (core_reg) + regulator_put(core_reg); + + return 0; +} + +#ifdef CONFIG_PM +static int lcd_suspend(struct platform_device *pdev, pm_message_t state) +{ + return 0; +} + +static int lcd_resume(struct platform_device *pdev) +{ + return 0; +} +#else +#define lcd_suspend NULL +#define lcd_resume NULL +#endif + +/*! + * platform driver structure for SEIKO WVGA + */ +static struct platform_driver lcd_driver = { + .driver = { + .name = "lcd_seiko"}, + .probe = lcd_probe, + .remove = __devexit_p(lcd_remove), + .suspend = lcd_suspend, + .resume = lcd_resume, +}; + +/* + * Send Power + * + */ +static void lcd_poweron(void) +{ + if (lcd_on) + return; + + dev_dbg(&plcd_dev->dev, "turning on LCD\n"); + if (core_reg) + regulator_enable(core_reg); + if (io_reg) + regulator_enable(io_reg); + lcd_on = 1; +} + +/* + * Send Power Off + * + */ +static void lcd_poweroff(void) +{ + lcd_on = 0; + dev_dbg(&plcd_dev->dev, "turning off LCD\n"); + if (io_reg) + regulator_disable(io_reg); + if (core_reg) + regulator_disable(core_reg); +} + +static int __init seiko_wvga_lcd_init(void) +{ + return platform_driver_register(&lcd_driver); +} + +static void __exit seiko_wvga_lcd_exit(void) +{ + platform_driver_unregister(&lcd_driver); +} + +module_init(seiko_wvga_lcd_init); +module_exit(seiko_wvga_lcd_exit); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("SEIKO WVGA LCD init driver"); +MODULE_LICENSE("GPL"); |