diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/video/fbdev/Makefile | 1 | ||||
| -rw-r--r-- | drivers/video/fbdev/atafb.c | 42 | ||||
| -rw-r--r-- | drivers/video/fbdev/da8xx-fb.c | 118 | ||||
| -rw-r--r-- | drivers/video/fbdev/nuc900fb.c | 760 | ||||
| -rw-r--r-- | drivers/video/fbdev/nuc900fb.h | 51 |
6 files changed, 86 insertions, 900 deletions
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index 6b2de93bd302..5f83cd715387 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -1924,20 +1924,6 @@ config FB_S3C2410_DEBUG Turn on debugging messages. Note that you can set/unset at run time through sysfs -config FB_NUC900 - tristate "NUC900 LCD framebuffer support" - depends on FB && ARCH_W90X900 - select FB_CFB_FILLRECT - select FB_CFB_COPYAREA - select FB_CFB_IMAGEBLIT - ---help--- - Frame buffer driver for the built-in LCD controller in the Nuvoton - NUC900 processor - -config GPM1040A0_320X240 - bool "Giantplus Technology GPM1040A0 320x240 Color TFT LCD" - depends on FB_NUC900 - config FB_SM501 tristate "Silicon Motion SM501 framebuffer support" depends on FB && MFD_SM501 diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile index 7dc4861a93e6..aab7155884ea 100644 --- a/drivers/video/fbdev/Makefile +++ b/drivers/video/fbdev/Makefile @@ -116,7 +116,6 @@ obj-y += omap2/ obj-$(CONFIG_XEN_FBDEV_FRONTEND) += xen-fbfront.o obj-$(CONFIG_FB_CARMINE) += carminefb.o obj-$(CONFIG_FB_MB862XX) += mb862xx/ -obj-$(CONFIG_FB_NUC900) += nuc900fb.o obj-$(CONFIG_FB_JZ4740) += jz4740_fb.o obj-$(CONFIG_FB_PUV3_UNIGFX) += fb-puv3.o obj-$(CONFIG_FB_HYPERV) += hyperv_fb.o diff --git a/drivers/video/fbdev/atafb.c b/drivers/video/fbdev/atafb.c index fc9dfb0a95af..51f5d1c56fd9 100644 --- a/drivers/video/fbdev/atafb.c +++ b/drivers/video/fbdev/atafb.c @@ -763,17 +763,17 @@ static void tt_get_par(struct atafb_par *par) { unsigned long addr; par->hw.tt.mode = shifter_tt.tt_shiftmode; - par->hw.tt.sync = shifter.syncmode; - addr = ((shifter.bas_hi & 0xff) << 16) | - ((shifter.bas_md & 0xff) << 8) | - ((shifter.bas_lo & 0xff)); + par->hw.tt.sync = shifter_st.syncmode; + addr = ((shifter_st.bas_hi & 0xff) << 16) | + ((shifter_st.bas_md & 0xff) << 8) | + ((shifter_st.bas_lo & 0xff)); par->screen_base = atari_stram_to_virt(addr); } static void tt_set_par(struct atafb_par *par) { shifter_tt.tt_shiftmode = par->hw.tt.mode; - shifter.syncmode = par->hw.tt.sync; + shifter_st.syncmode = par->hw.tt.sync; /* only set screen_base if really necessary */ if (current_par.screen_base != par->screen_base) fbhw->set_screen_base(par->screen_base); @@ -1543,7 +1543,7 @@ static void falcon_get_par(struct atafb_par *par) hw->f_shift = videl.f_shift; hw->vid_control = videl.control; hw->vid_mode = videl.mode; - hw->sync = shifter.syncmode & 0x1; + hw->sync = shifter_st.syncmode & 0x1; hw->xoffset = videl.xoffset & 0xf; hw->hht = videl.hht; hw->hbb = videl.hbb; @@ -1558,9 +1558,9 @@ static void falcon_get_par(struct atafb_par *par) hw->vde = videl.vde; hw->vss = videl.vss; - addr = (shifter.bas_hi & 0xff) << 16 | - (shifter.bas_md & 0xff) << 8 | - (shifter.bas_lo & 0xff); + addr = (shifter_st.bas_hi & 0xff) << 16 | + (shifter_st.bas_md & 0xff) << 8 | + (shifter_st.bas_lo & 0xff); par->screen_base = atari_stram_to_virt(addr); /* derived parameters */ @@ -1605,7 +1605,7 @@ static irqreturn_t falcon_vbl_switcher(int irq, void *dummy) /* Turn off external clocks. Read sets all output bits to 1. */ *(volatile unsigned short *)0xffff9202; } - shifter.syncmode = hw->sync; + shifter_st.syncmode = hw->sync; videl.hht = hw->hht; videl.hbb = hw->hbb; @@ -1952,18 +1952,18 @@ static void stste_get_par(struct atafb_par *par) { unsigned long addr; par->hw.st.mode = shifter_tt.st_shiftmode; - par->hw.st.sync = shifter.syncmode; - addr = ((shifter.bas_hi & 0xff) << 16) | - ((shifter.bas_md & 0xff) << 8); + par->hw.st.sync = shifter_st.syncmode; + addr = ((shifter_st.bas_hi & 0xff) << 16) | + ((shifter_st.bas_md & 0xff) << 8); if (ATARIHW_PRESENT(EXTD_SHIFTER)) - addr |= (shifter.bas_lo & 0xff); + addr |= (shifter_st.bas_lo & 0xff); par->screen_base = atari_stram_to_virt(addr); } static void stste_set_par(struct atafb_par *par) { shifter_tt.st_shiftmode = par->hw.st.mode; - shifter.syncmode = par->hw.st.sync; + shifter_st.syncmode = par->hw.st.sync; /* only set screen_base if really necessary */ if (current_par.screen_base != par->screen_base) fbhw->set_screen_base(par->screen_base); @@ -2018,10 +2018,10 @@ static void stste_set_screen_base(void *s_base) unsigned long addr; addr = atari_stram_to_phys(s_base); /* Setup Screen Memory */ - shifter.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); - shifter.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); + shifter_st.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); + shifter_st.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); if (ATARIHW_PRESENT(EXTD_SHIFTER)) - shifter.bas_lo = (unsigned char)(addr & 0x0000ff); + shifter_st.bas_lo = (unsigned char)(addr & 0x0000ff); } #endif /* ATAFB_STE */ @@ -2265,9 +2265,9 @@ static void set_screen_base(void *s_base) addr = atari_stram_to_phys(s_base); /* Setup Screen Memory */ - shifter.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); - shifter.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); - shifter.bas_lo = (unsigned char)(addr & 0x0000ff); + shifter_st.bas_hi = (unsigned char)((addr & 0xff0000) >> 16); + shifter_st.bas_md = (unsigned char)((addr & 0x00ff00) >> 8); + shifter_st.bas_lo = (unsigned char)(addr & 0x0000ff); } static int pan_display(struct fb_var_screeninfo *var, struct fb_info *info) diff --git a/drivers/video/fbdev/da8xx-fb.c b/drivers/video/fbdev/da8xx-fb.c index b1cf248f3291..2d3dcc52fcf3 100644 --- a/drivers/video/fbdev/da8xx-fb.c +++ b/drivers/video/fbdev/da8xx-fb.c @@ -19,6 +19,7 @@ #include <linux/clk.h> #include <linux/cpufreq.h> #include <linux/console.h> +#include <linux/regulator/consumer.h> #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/delay.h> @@ -164,7 +165,7 @@ struct da8xx_fb_par { struct notifier_block freq_transition; #endif unsigned int lcdc_clk_rate; - void (*panel_power_ctrl)(int); + struct regulator *lcd_supply; u32 pseudo_palette[16]; struct fb_videomode mode; struct lcd_ctrl_config cfg; @@ -1066,33 +1067,30 @@ static void lcd_da8xx_cpufreq_deregister(struct da8xx_fb_par *par) static int fb_remove(struct platform_device *dev) { struct fb_info *info = dev_get_drvdata(&dev->dev); - - if (info) { - struct da8xx_fb_par *par = info->par; + struct da8xx_fb_par *par = info->par; + int ret; #ifdef CONFIG_CPU_FREQ - lcd_da8xx_cpufreq_deregister(par); + lcd_da8xx_cpufreq_deregister(par); #endif - if (par->panel_power_ctrl) - par->panel_power_ctrl(0); + if (par->lcd_supply) { + ret = regulator_disable(par->lcd_supply); + if (ret) + return ret; + } - lcd_disable_raster(DA8XX_FRAME_WAIT); - lcdc_write(0, LCD_RASTER_CTRL_REG); + lcd_disable_raster(DA8XX_FRAME_WAIT); + lcdc_write(0, LCD_RASTER_CTRL_REG); - /* disable DMA */ - lcdc_write(0, LCD_DMA_CTRL_REG); + /* disable DMA */ + lcdc_write(0, LCD_DMA_CTRL_REG); - unregister_framebuffer(info); - fb_dealloc_cmap(&info->cmap); - dma_free_coherent(par->dev, PALETTE_SIZE, par->v_palette_base, - par->p_palette_base); - dma_free_coherent(par->dev, par->vram_size, par->vram_virt, - par->vram_phys); - pm_runtime_put_sync(&dev->dev); - pm_runtime_disable(&dev->dev); - framebuffer_release(info); + unregister_framebuffer(info); + fb_dealloc_cmap(&info->cmap); + pm_runtime_put_sync(&dev->dev); + pm_runtime_disable(&dev->dev); + framebuffer_release(info); - } return 0; } @@ -1179,15 +1177,21 @@ static int cfb_blank(int blank, struct fb_info *info) case FB_BLANK_UNBLANK: lcd_enable_raster(); - if (par->panel_power_ctrl) - par->panel_power_ctrl(1); + if (par->lcd_supply) { + ret = regulator_enable(par->lcd_supply); + if (ret) + return ret; + } break; case FB_BLANK_NORMAL: case FB_BLANK_VSYNC_SUSPEND: case FB_BLANK_HSYNC_SUSPEND: case FB_BLANK_POWERDOWN: - if (par->panel_power_ctrl) - par->panel_power_ctrl(0); + if (par->lcd_supply) { + ret = regulator_disable(par->lcd_supply); + if (ret) + return ret; + } lcd_disable_raster(DA8XX_FRAME_WAIT); break; @@ -1328,7 +1332,6 @@ static int fb_probe(struct platform_device *device) { struct da8xx_lcdc_platform_data *fb_pdata = dev_get_platdata(&device->dev); - struct resource *lcdc_regs; struct lcd_ctrl_config *lcd_cfg; struct fb_videomode *lcdc_info; struct fb_info *da8xx_fb_info; @@ -1346,8 +1349,7 @@ static int fb_probe(struct platform_device *device) if (lcdc_info == NULL) return -ENODEV; - lcdc_regs = platform_get_resource(device, IORESOURCE_MEM, 0); - da8xx_fb_reg_base = devm_ioremap_resource(&device->dev, lcdc_regs); + da8xx_fb_reg_base = devm_platform_ioremap_resource(device, 0); if (IS_ERR(da8xx_fb_reg_base)) return PTR_ERR(da8xx_fb_reg_base); @@ -1395,9 +1397,19 @@ static int fb_probe(struct platform_device *device) par->dev = &device->dev; par->lcdc_clk = tmp_lcdc_clk; par->lcdc_clk_rate = clk_get_rate(par->lcdc_clk); - if (fb_pdata->panel_power_ctrl) { - par->panel_power_ctrl = fb_pdata->panel_power_ctrl; - par->panel_power_ctrl(1); + + par->lcd_supply = devm_regulator_get_optional(&device->dev, "lcd"); + if (IS_ERR(par->lcd_supply)) { + if (PTR_ERR(par->lcd_supply) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto err_pm_runtime_disable; + } + + par->lcd_supply = NULL; + } else { + ret = regulator_enable(par->lcd_supply); + if (ret) + goto err_pm_runtime_disable; } fb_videomode_to_var(&da8xx_fb_var, lcdc_info); @@ -1411,10 +1423,10 @@ static int fb_probe(struct platform_device *device) par->vram_size = roundup(par->vram_size/8, ulcm); par->vram_size = par->vram_size * LCD_NUM_BUFFERS; - par->vram_virt = dma_alloc_coherent(par->dev, - par->vram_size, - &par->vram_phys, - GFP_KERNEL | GFP_DMA); + par->vram_virt = dmam_alloc_coherent(par->dev, + par->vram_size, + &par->vram_phys, + GFP_KERNEL | GFP_DMA); if (!par->vram_virt) { dev_err(&device->dev, "GLCD: kmalloc for frame buffer failed\n"); @@ -1432,20 +1444,20 @@ static int fb_probe(struct platform_device *device) da8xx_fb_fix.line_length - 1; /* allocate palette buffer */ - par->v_palette_base = dma_alloc_coherent(par->dev, PALETTE_SIZE, - &par->p_palette_base, - GFP_KERNEL | GFP_DMA); + par->v_palette_base = dmam_alloc_coherent(par->dev, PALETTE_SIZE, + &par->p_palette_base, + GFP_KERNEL | GFP_DMA); if (!par->v_palette_base) { dev_err(&device->dev, "GLCD: kmalloc for palette buffer failed\n"); ret = -EINVAL; - goto err_release_fb_mem; + goto err_release_fb; } par->irq = platform_get_irq(device, 0); if (par->irq < 0) { ret = -ENOENT; - goto err_release_pl_mem; + goto err_release_fb; } da8xx_fb_var.grayscale = @@ -1463,7 +1475,7 @@ static int fb_probe(struct platform_device *device) ret = fb_alloc_cmap(&da8xx_fb_info->cmap, PALETTE_SIZE, 0); if (ret) - goto err_release_pl_mem; + goto err_release_fb; da8xx_fb_info->cmap.len = par->palette_sz; /* initialize var_screeninfo */ @@ -1517,14 +1529,6 @@ err_cpu_freq: err_dealloc_cmap: fb_dealloc_cmap(&da8xx_fb_info->cmap); -err_release_pl_mem: - dma_free_coherent(par->dev, PALETTE_SIZE, par->v_palette_base, - par->p_palette_base); - -err_release_fb_mem: - dma_free_coherent(par->dev, par->vram_size, par->vram_virt, - par->vram_phys); - err_release_fb: framebuffer_release(da8xx_fb_info); @@ -1603,10 +1607,14 @@ static int fb_suspend(struct device *dev) { struct fb_info *info = dev_get_drvdata(dev); struct da8xx_fb_par *par = info->par; + int ret; console_lock(); - if (par->panel_power_ctrl) - par->panel_power_ctrl(0); + if (par->lcd_supply) { + ret = regulator_disable(par->lcd_supply); + if (ret) + return ret; + } fb_set_suspend(info, 1); lcd_disable_raster(DA8XX_FRAME_WAIT); @@ -1620,6 +1628,7 @@ static int fb_resume(struct device *dev) { struct fb_info *info = dev_get_drvdata(dev); struct da8xx_fb_par *par = info->par; + int ret; console_lock(); pm_runtime_get_sync(dev); @@ -1627,8 +1636,11 @@ static int fb_resume(struct device *dev) if (par->blank == FB_BLANK_UNBLANK) { lcd_enable_raster(); - if (par->panel_power_ctrl) - par->panel_power_ctrl(1); + if (par->lcd_supply) { + ret = regulator_enable(par->lcd_supply); + if (ret) + return ret; + } } fb_set_suspend(info, 0); diff --git a/drivers/video/fbdev/nuc900fb.c b/drivers/video/fbdev/nuc900fb.c deleted file mode 100644 index 4fd851598584..000000000000 --- a/drivers/video/fbdev/nuc900fb.c +++ /dev/null @@ -1,760 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * - * Copyright (c) 2009 Nuvoton technology corporation - * All rights reserved. - * - * Description: - * Nuvoton LCD Controller Driver - * Author: - * Wang Qiang (rurality.linux@gmail.com) 2009/12/11 - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/err.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/init.h> -#include <linux/dma-mapping.h> -#include <linux/interrupt.h> -#include <linux/workqueue.h> -#include <linux/wait.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/cpufreq.h> -#include <linux/io.h> -#include <linux/pm.h> -#include <linux/device.h> - -#include <mach/map.h> -#include <mach/regs-clock.h> -#include <mach/regs-ldm.h> -#include <linux/platform_data/video-nuc900fb.h> - -#include "nuc900fb.h" - - -/* - * Initialize the nuc900 video (dual) buffer address - */ -static void nuc900fb_set_lcdaddr(struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - void __iomem *regs = fbi->io; - unsigned long vbaddr1, vbaddr2; - - vbaddr1 = info->fix.smem_start; - vbaddr2 = info->fix.smem_start; - vbaddr2 += info->fix.line_length * info->var.yres; - - /* set frambuffer start phy addr*/ - writel(vbaddr1, regs + REG_LCM_VA_BADDR0); - writel(vbaddr2, regs + REG_LCM_VA_BADDR1); - - writel(fbi->regs.lcd_va_fbctrl, regs + REG_LCM_VA_FBCTRL); - writel(fbi->regs.lcd_va_scale, regs + REG_LCM_VA_SCALE); -} - -/* - * calculate divider for lcd div - */ -static unsigned int nuc900fb_calc_pixclk(struct nuc900fb_info *fbi, - unsigned long pixclk) -{ - unsigned long clk = fbi->clk_rate; - unsigned long long div; - - /* pixclk is in picseconds. our clock is in Hz*/ - /* div = (clk * pixclk)/10^12 */ - div = (unsigned long long)clk * pixclk; - div >>= 12; - do_div(div, 625 * 625UL * 625); - - dev_dbg(fbi->dev, "pixclk %ld, divisor is %lld\n", pixclk, div); - - return div; -} - -/* - * Check the video params of 'var'. - */ -static int nuc900fb_check_var(struct fb_var_screeninfo *var, - struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - struct nuc900fb_mach_info *mach_info = dev_get_platdata(fbi->dev); - struct nuc900fb_display *display = NULL; - struct nuc900fb_display *default_display = mach_info->displays + - mach_info->default_display; - int i; - - dev_dbg(fbi->dev, "check_var(var=%p, info=%p)\n", var, info); - - /* validate x/y resolution */ - /* choose default mode if possible */ - if (var->xres == default_display->xres && - var->yres == default_display->yres && - var->bits_per_pixel == default_display->bpp) - display = default_display; - else - for (i = 0; i < mach_info->num_displays; i++) - if (var->xres == mach_info->displays[i].xres && - var->yres == mach_info->displays[i].yres && - var->bits_per_pixel == mach_info->displays[i].bpp) { - display = mach_info->displays + i; - break; - } - - if (display == NULL) { - printk(KERN_ERR "wrong resolution or depth %dx%d at %d bit per pixel\n", - var->xres, var->yres, var->bits_per_pixel); - return -EINVAL; - } - - /* it should be the same size as the display */ - var->xres_virtual = display->xres; - var->yres_virtual = display->yres; - var->height = display->height; - var->width = display->width; - - /* copy lcd settings */ - var->pixclock = display->pixclock; - var->left_margin = display->left_margin; - var->right_margin = display->right_margin; - var->upper_margin = display->upper_margin; - var->lower_margin = display->lower_margin; - var->vsync_len = display->vsync_len; - var->hsync_len = display->hsync_len; - - var->transp.offset = 0; - var->transp.length = 0; - - fbi->regs.lcd_dccs = display->dccs; - fbi->regs.lcd_device_ctrl = display->devctl; - fbi->regs.lcd_va_fbctrl = display->fbctrl; - fbi->regs.lcd_va_scale = display->scale; - - /* set R/G/B possions */ - switch (var->bits_per_pixel) { - case 1: - case 2: - case 4: - case 8: - default: - var->red.offset = 0; - var->red.length = var->bits_per_pixel; - var->green = var->red; - var->blue = var->red; - break; - case 12: - var->red.length = 4; - var->green.length = 4; - var->blue.length = 4; - var->red.offset = 8; - var->green.offset = 4; - var->blue.offset = 0; - break; - case 16: - var->red.length = 5; - var->green.length = 6; - var->blue.length = 5; - var->red.offset = 11; - var->green.offset = 5; - var->blue.offset = 0; - break; - case 18: - var->red.length = 6; - var->green.length = 6; - var->blue.length = 6; - var->red.offset = 12; - var->green.offset = 6; - var->blue.offset = 0; - break; - case 32: - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->red.offset = 16; - var->green.offset = 8; - var->blue.offset = 0; - break; - } - - return 0; -} - -/* - * Calculate lcd register values from var setting & save into hw - */ -static void nuc900fb_calculate_lcd_regs(const struct fb_info *info, - struct nuc900fb_hw *regs) -{ - const struct fb_var_screeninfo *var = &info->var; - int vtt = var->height + var->upper_margin + var->lower_margin; - int htt = var->width + var->left_margin + var->right_margin; - int hsync = var->width + var->right_margin; - int vsync = var->height + var->lower_margin; - - regs->lcd_crtc_size = LCM_CRTC_SIZE_VTTVAL(vtt) | - LCM_CRTC_SIZE_HTTVAL(htt); - regs->lcd_crtc_dend = LCM_CRTC_DEND_VDENDVAL(var->height) | - LCM_CRTC_DEND_HDENDVAL(var->width); - regs->lcd_crtc_hr = LCM_CRTC_HR_EVAL(var->width + 5) | - LCM_CRTC_HR_SVAL(var->width + 1); - regs->lcd_crtc_hsync = LCM_CRTC_HSYNC_EVAL(hsync + var->hsync_len) | - LCM_CRTC_HSYNC_SVAL(hsync); - regs->lcd_crtc_vr = LCM_CRTC_VR_EVAL(vsync + var->vsync_len) | - LCM_CRTC_VR_SVAL(vsync); - -} - -/* - * Activate (set) the controller from the given framebuffer - * information - */ -static void nuc900fb_activate_var(struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - void __iomem *regs = fbi->io; - struct fb_var_screeninfo *var = &info->var; - int clkdiv; - - clkdiv = nuc900fb_calc_pixclk(fbi, var->pixclock) - 1; - if (clkdiv < 0) - clkdiv = 0; - - nuc900fb_calculate_lcd_regs(info, &fbi->regs); - - /* set the new lcd registers*/ - - dev_dbg(fbi->dev, "new lcd register set:\n"); - dev_dbg(fbi->dev, "dccs = 0x%08x\n", fbi->regs.lcd_dccs); - dev_dbg(fbi->dev, "dev_ctl = 0x%08x\n", fbi->regs.lcd_device_ctrl); - dev_dbg(fbi->dev, "crtc_size = 0x%08x\n", fbi->regs.lcd_crtc_size); - dev_dbg(fbi->dev, "crtc_dend = 0x%08x\n", fbi->regs.lcd_crtc_dend); - dev_dbg(fbi->dev, "crtc_hr = 0x%08x\n", fbi->regs.lcd_crtc_hr); - dev_dbg(fbi->dev, "crtc_hsync = 0x%08x\n", fbi->regs.lcd_crtc_hsync); - dev_dbg(fbi->dev, "crtc_vr = 0x%08x\n", fbi->regs.lcd_crtc_vr); - - writel(fbi->regs.lcd_device_ctrl, regs + REG_LCM_DEV_CTRL); - writel(fbi->regs.lcd_crtc_size, regs + REG_LCM_CRTC_SIZE); - writel(fbi->regs.lcd_crtc_dend, regs + REG_LCM_CRTC_DEND); - writel(fbi->regs.lcd_crtc_hr, regs + REG_LCM_CRTC_HR); - writel(fbi->regs.lcd_crtc_hsync, regs + REG_LCM_CRTC_HSYNC); - writel(fbi->regs.lcd_crtc_vr, regs + REG_LCM_CRTC_VR); - - /* set lcd address pointers */ - nuc900fb_set_lcdaddr(info); - - writel(fbi->regs.lcd_dccs, regs + REG_LCM_DCCS); -} - -/* - * Alters the hardware state. - * - */ -static int nuc900fb_set_par(struct fb_info *info) -{ - struct fb_var_screeninfo *var = &info->var; - - switch (var->bits_per_pixel) { - case 32: - case 24: - case 18: - case 16: - case 12: - info->fix.visual = FB_VISUAL_TRUECOLOR; - break; - case 1: - info->fix.visual = FB_VISUAL_MONO01; - break; - default: - info->fix.visual = FB_VISUAL_PSEUDOCOLOR; - break; - } - - info->fix.line_length = (var->xres_virtual * var->bits_per_pixel) / 8; - - /* activate this new configuration */ - nuc900fb_activate_var(info); - return 0; -} - -static inline unsigned int chan_to_field(unsigned int chan, - struct fb_bitfield *bf) -{ - chan &= 0xffff; - chan >>= 16 - bf->length; - return chan << bf->offset; -} - -static int nuc900fb_setcolreg(unsigned regno, - unsigned red, unsigned green, unsigned blue, - unsigned transp, struct fb_info *info) -{ - unsigned int val; - - switch (info->fix.visual) { - case FB_VISUAL_TRUECOLOR: - /* true-colour, use pseuo-palette */ - if (regno < 16) { - u32 *pal = info->pseudo_palette; - - val = chan_to_field(red, &info->var.red); - val |= chan_to_field(green, &info->var.green); - val |= chan_to_field(blue, &info->var.blue); - pal[regno] = val; - } - break; - - default: - return 1; /* unknown type */ - } - return 0; -} - -/** - * nuc900fb_blank - * - */ -static int nuc900fb_blank(int blank_mode, struct fb_info *info) -{ - - return 0; -} - -static struct fb_ops nuc900fb_ops = { - .owner = THIS_MODULE, - .fb_check_var = nuc900fb_check_var, - .fb_set_par = nuc900fb_set_par, - .fb_blank = nuc900fb_blank, - .fb_setcolreg = nuc900fb_setcolreg, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, -}; - - -static inline void modify_gpio(void __iomem *reg, - unsigned long set, unsigned long mask) -{ - unsigned long tmp; - tmp = readl(reg) & ~mask; - writel(tmp | set, reg); -} - -/* - * Initialise LCD-related registers - */ -static int nuc900fb_init_registers(struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - struct nuc900fb_mach_info *mach_info = dev_get_platdata(fbi->dev); - void __iomem *regs = fbi->io; - - /*reset the display engine*/ - writel(0, regs + REG_LCM_DCCS); - writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_ENG_RST, - regs + REG_LCM_DCCS); - ndelay(100); - writel(readl(regs + REG_LCM_DCCS) & (~LCM_DCCS_ENG_RST), - regs + REG_LCM_DCCS); - ndelay(100); - - writel(0, regs + REG_LCM_DEV_CTRL); - - /* config gpio output */ - modify_gpio(W90X900_VA_GPIO + 0x54, mach_info->gpio_dir, - mach_info->gpio_dir_mask); - modify_gpio(W90X900_VA_GPIO + 0x58, mach_info->gpio_data, - mach_info->gpio_data_mask); - - return 0; -} - - -/* - * Alloc the SDRAM region of NUC900 for the frame buffer. - * The buffer should be a non-cached, non-buffered, memory region - * to allow palette and pixel writes without flushing the cache. - */ -static int nuc900fb_map_video_memory(struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - dma_addr_t map_dma; - unsigned long map_size = PAGE_ALIGN(info->fix.smem_len); - - dev_dbg(fbi->dev, "nuc900fb_map_video_memory(fbi=%p) map_size %lu\n", - fbi, map_size); - - info->screen_base = dma_alloc_wc(fbi->dev, map_size, &map_dma, - GFP_KERNEL); - - if (!info->screen_base) - return -ENOMEM; - - memset(info->screen_base, 0x00, map_size); - info->fix.smem_start = map_dma; - - return 0; -} - -static inline void nuc900fb_unmap_video_memory(struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - dma_free_wc(fbi->dev, PAGE_ALIGN(info->fix.smem_len), - info->screen_base, info->fix.smem_start); -} - -static irqreturn_t nuc900fb_irqhandler(int irq, void *dev_id) -{ - struct nuc900fb_info *fbi = dev_id; - void __iomem *regs = fbi->io; - void __iomem *irq_base = fbi->irq_base; - unsigned long lcdirq = readl(regs + REG_LCM_INT_CS); - - if (lcdirq & LCM_INT_CS_DISP_F_STATUS) { - writel(readl(irq_base) | 1<<30, irq_base); - - /* wait VA_EN low */ - if ((readl(regs + REG_LCM_DCCS) & - LCM_DCCS_SINGLE) == LCM_DCCS_SINGLE) - while ((readl(regs + REG_LCM_DCCS) & - LCM_DCCS_VA_EN) == LCM_DCCS_VA_EN) - ; - /* display_out-enable */ - writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_DISP_OUT_EN, - regs + REG_LCM_DCCS); - /* va-enable*/ - writel(readl(regs + REG_LCM_DCCS) | LCM_DCCS_VA_EN, - regs + REG_LCM_DCCS); - } else if (lcdirq & LCM_INT_CS_UNDERRUN_INT) { - writel(readl(irq_base) | LCM_INT_CS_UNDERRUN_INT, irq_base); - } else if (lcdirq & LCM_INT_CS_BUS_ERROR_INT) { - writel(readl(irq_base) | LCM_INT_CS_BUS_ERROR_INT, irq_base); - } - - return IRQ_HANDLED; -} - -#ifdef CONFIG_CPU_FREQ - -static int nuc900fb_cpufreq_transition(struct notifier_block *nb, - unsigned long val, void *data) -{ - struct nuc900fb_info *info; - struct fb_info *fbinfo; - long delta_f; - info = container_of(nb, struct nuc900fb_info, freq_transition); - fbinfo = dev_get_drvdata(info->dev); - - delta_f = info->clk_rate - clk_get_rate(info->clk); - - if ((val == CPUFREQ_POSTCHANGE && delta_f > 0) || - (val == CPUFREQ_PRECHANGE && delta_f < 0)) { - info->clk_rate = clk_get_rate(info->clk); - nuc900fb_activate_var(fbinfo); - } - - return 0; -} - -static inline int nuc900fb_cpufreq_register(struct nuc900fb_info *fbi) -{ - fbi->freq_transition.notifier_call = nuc900fb_cpufreq_transition; - return cpufreq_register_notifier(&fbi->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -} - -static inline void nuc900fb_cpufreq_deregister(struct nuc900fb_info *fbi) -{ - cpufreq_unregister_notifier(&fbi->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); -} -#else -static inline int nuc900fb_cpufreq_transition(struct notifier_block *nb, - unsigned long val, void *data) -{ - return 0; -} - -static inline int nuc900fb_cpufreq_register(struct nuc900fb_info *fbi) -{ - return 0; -} - -static inline void nuc900fb_cpufreq_deregister(struct nuc900fb_info *info) -{ -} -#endif - -static char driver_name[] = "nuc900fb"; - -static int nuc900fb_probe(struct platform_device *pdev) -{ - struct nuc900fb_info *fbi; - struct nuc900fb_display *display; - struct fb_info *fbinfo; - struct nuc900fb_mach_info *mach_info; - struct resource *res; - int ret; - int irq; - int i; - int size; - - dev_dbg(&pdev->dev, "devinit\n"); - mach_info = dev_get_platdata(&pdev->dev); - if (mach_info == NULL) { - dev_err(&pdev->dev, - "no platform data for lcd, cannot attach\n"); - return -EINVAL; - } - - if (mach_info->default_display > mach_info->num_displays) { - dev_err(&pdev->dev, - "default display No. is %d but only %d displays \n", - mach_info->default_display, mach_info->num_displays); - return -EINVAL; - } - - - display = mach_info->displays + mach_info->default_display; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "no irq for device\n"); - return -ENOENT; - } - - fbinfo = framebuffer_alloc(sizeof(struct nuc900fb_info), &pdev->dev); - if (!fbinfo) - return -ENOMEM; - - platform_set_drvdata(pdev, fbinfo); - - fbi = fbinfo->par; - fbi->dev = &pdev->dev; - -#ifdef CONFIG_CPU_NUC950 - fbi->drv_type = LCDDRV_NUC950; -#endif - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - size = resource_size(res); - fbi->mem = request_mem_region(res->start, size, pdev->name); - if (fbi->mem == NULL) { - dev_err(&pdev->dev, "failed to alloc memory region\n"); - ret = -ENOENT; - goto free_fb; - } - - fbi->io = ioremap(res->start, size); - if (fbi->io == NULL) { - dev_err(&pdev->dev, "ioremap() of lcd registers failed\n"); - ret = -ENXIO; - goto release_mem_region; - } - - fbi->irq_base = fbi->io + REG_LCM_INT_CS; - - - /* Stop the LCD */ - writel(0, fbi->io + REG_LCM_DCCS); - - /* fill the 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->var.nonstd = 0; - fbinfo->var.activate = FB_ACTIVATE_NOW; - fbinfo->var.accel_flags = 0; - fbinfo->var.vmode = FB_VMODE_NONINTERLACED; - fbinfo->fbops = &nuc900fb_ops; - fbinfo->flags = FBINFO_FLAG_DEFAULT; - fbinfo->pseudo_palette = &fbi->pseudo_pal; - - ret = request_irq(irq, nuc900fb_irqhandler, 0, pdev->name, fbi); - if (ret) { - dev_err(&pdev->dev, "cannot register irq handler %d -err %d\n", - irq, ret); - ret = -EBUSY; - goto release_regs; - } - - fbi->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(fbi->clk)) { - printk(KERN_ERR "nuc900-lcd:failed to get lcd clock source\n"); - ret = PTR_ERR(fbi->clk); - goto release_irq; - } - - clk_enable(fbi->clk); - dev_dbg(&pdev->dev, "got and enabled clock\n"); - - fbi->clk_rate = clk_get_rate(fbi->clk); - - /* calutate the video buffer size */ - for (i = 0; i < mach_info->num_displays; i++) { - unsigned long smem_len = mach_info->displays[i].xres; - smem_len *= mach_info->displays[i].yres; - smem_len *= mach_info->displays[i].bpp; - smem_len >>= 3; - if (fbinfo->fix.smem_len < smem_len) - fbinfo->fix.smem_len = smem_len; - } - - /* Initialize Video Memory */ - ret = nuc900fb_map_video_memory(fbinfo); - if (ret) { - printk(KERN_ERR "Failed to allocate video RAM: %x\n", ret); - goto release_clock; - } - - dev_dbg(&pdev->dev, "got video memory\n"); - - fbinfo->var.xres = display->xres; - fbinfo->var.yres = display->yres; - fbinfo->var.bits_per_pixel = display->bpp; - - nuc900fb_init_registers(fbinfo); - - nuc900fb_check_var(&fbinfo->var, fbinfo); - - ret = nuc900fb_cpufreq_register(fbi); - if (ret < 0) { - dev_err(&pdev->dev, "Failed to register cpufreq\n"); - goto free_video_memory; - } - - ret = register_framebuffer(fbinfo); - if (ret) { - printk(KERN_ERR "failed to register framebuffer device: %d\n", - ret); - goto free_cpufreq; - } - - fb_info(fbinfo, "%s frame buffer device\n", fbinfo->fix.id); - - return 0; - -free_cpufreq: - nuc900fb_cpufreq_deregister(fbi); -free_video_memory: - nuc900fb_unmap_video_memory(fbinfo); -release_clock: - clk_disable(fbi->clk); - clk_put(fbi->clk); -release_irq: - free_irq(irq, fbi); -release_regs: - iounmap(fbi->io); -release_mem_region: - release_mem_region(res->start, size); -free_fb: - framebuffer_release(fbinfo); - return ret; -} - -/* - * shutdown the lcd controller - */ -static void nuc900fb_stop_lcd(struct fb_info *info) -{ - struct nuc900fb_info *fbi = info->par; - void __iomem *regs = fbi->io; - - writel((~LCM_DCCS_DISP_INT_EN) | (~LCM_DCCS_VA_EN) | (~LCM_DCCS_OSD_EN), - regs + REG_LCM_DCCS); -} - -/* - * Cleanup - */ -static int nuc900fb_remove(struct platform_device *pdev) -{ - struct fb_info *fbinfo = platform_get_drvdata(pdev); - struct nuc900fb_info *fbi = fbinfo->par; - int irq; - - nuc900fb_stop_lcd(fbinfo); - msleep(1); - - unregister_framebuffer(fbinfo); - nuc900fb_cpufreq_deregister(fbi); - nuc900fb_unmap_video_memory(fbinfo); - - iounmap(fbi->io); - - irq = platform_get_irq(pdev, 0); - free_irq(irq, fbi); - - release_resource(fbi->mem); - kfree(fbi->mem); - - framebuffer_release(fbinfo); - - return 0; -} - -#ifdef CONFIG_PM - -/* - * suspend and resume support for the lcd controller - */ - -static int nuc900fb_suspend(struct platform_device *dev, pm_message_t state) -{ - struct fb_info *fbinfo = platform_get_drvdata(dev); - struct nuc900fb_info *info = fbinfo->par; - - nuc900fb_stop_lcd(fbinfo); - msleep(1); - clk_disable(info->clk); - return 0; -} - -static int nuc900fb_resume(struct platform_device *dev) -{ - struct fb_info *fbinfo = platform_get_drvdata(dev); - struct nuc900fb_info *fbi = fbinfo->par; - - printk(KERN_INFO "nuc900fb resume\n"); - - clk_enable(fbi->clk); - msleep(1); - - nuc900fb_init_registers(fbinfo); - nuc900fb_activate_var(fbinfo); - - return 0; -} - -#else -#define nuc900fb_suspend NULL -#define nuc900fb_resume NULL -#endif - -static struct platform_driver nuc900fb_driver = { - .probe = nuc900fb_probe, - .remove = nuc900fb_remove, - .suspend = nuc900fb_suspend, - .resume = nuc900fb_resume, - .driver = { - .name = "nuc900-lcd", - }, -}; - -module_platform_driver(nuc900fb_driver); - -MODULE_DESCRIPTION("Framebuffer driver for the NUC900"); -MODULE_LICENSE("GPL"); diff --git a/drivers/video/fbdev/nuc900fb.h b/drivers/video/fbdev/nuc900fb.h deleted file mode 100644 index 055ae9297931..000000000000 --- a/drivers/video/fbdev/nuc900fb.h +++ /dev/null @@ -1,51 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * - * Copyright (c) 2009 Nuvoton technology corporation - * All rights reserved. - * - * Author: - * Wang Qiang(rurality.linux@gmail.com) 2009/12/16 - */ - -#ifndef __NUC900FB_H -#define __NUC900FB_H - -#include <mach/map.h> -#include <linux/platform_data/video-nuc900fb.h> - -enum nuc900_lcddrv_type { - LCDDRV_NUC910, - LCDDRV_NUC930, - LCDDRV_NUC932, - LCDDRV_NUC950, - LCDDRV_NUC960, -}; - - -#define PALETTE_BUFFER_SIZE 256 -#define PALETTE_BUFF_CLEAR (0x80000000) /* entry is clear/invalid */ - -struct nuc900fb_info { - struct device *dev; - struct clk *clk; - - struct resource *mem; - void __iomem *io; - void __iomem *irq_base; - int drv_type; - struct nuc900fb_hw regs; - unsigned long clk_rate; - -#ifdef CONFIG_CPU_FREQ - struct notifier_block freq_transition; -#endif - - /* keep these registers in case we need to re-write palette */ - u32 palette_buffer[PALETTE_BUFFER_SIZE]; - u32 pseudo_pal[16]; -}; - -int nuc900fb_init(void); - -#endif /* __NUC900FB_H */ |