| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dmitry Eremin-Solenikov | 4801 | 97.92% | 2 | 14.29% |
| Alan Cox | 34 | 0.69% | 1 | 7.14% |
| Andres Salomon | 28 | 0.57% | 3 | 21.43% |
| Jingoo Han | 18 | 0.37% | 1 | 7.14% |
| Samuel Ortiz | 6 | 0.12% | 1 | 7.14% |
| Torben Hohn | 5 | 0.10% | 1 | 7.14% |
| Kay Sievers | 4 | 0.08% | 1 | 7.14% |
| Joe Perches | 3 | 0.06% | 1 | 7.14% |
| Andrew Morton | 2 | 0.04% | 1 | 7.14% |
| Lucas De Marchi | 1 | 0.02% | 1 | 7.14% |
| Yong Zhang | 1 | 0.02% | 1 | 7.14% |
| Total | 4903 | 14 |
/* * Frame Buffer Device for Toshiba Mobile IO(TMIO) controller * * Copyright(C) 2005-2006 Chris Humbert * Copyright(C) 2005 Dirk Opfer * Copytight(C) 2007,2008 Dmitry Baryshkov * * Based on: * drivers/video/w100fb.c * code written by Sharp/Lineo for 2.4 kernels * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation; * * 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. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/fb.h> #include <linux/interrupt.h> #include <linux/delay.h> /* Why should fb driver call console functions? because console_lock() */ #include <linux/console.h> #include <linux/mfd/core.h> #include <linux/mfd/tmio.h> #include <linux/uaccess.h> /* * accelerator commands */ #define TMIOFB_ACC_CSADR(x) (0x00000000 | ((x) & 0x001ffffe)) #define TMIOFB_ACC_CHPIX(x) (0x01000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_CVPIX(x) (0x02000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_PSADR(x) (0x03000000 | ((x) & 0x00fffffe)) #define TMIOFB_ACC_PHPIX(x) (0x04000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_PVPIX(x) (0x05000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_PHOFS(x) (0x06000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_PVOFS(x) (0x07000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_POADR(x) (0x08000000 | ((x) & 0x00fffffe)) #define TMIOFB_ACC_RSTR(x) (0x09000000 | ((x) & 0x000000ff)) #define TMIOFB_ACC_TCLOR(x) (0x0A000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_FILL(x) (0x0B000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_DSADR(x) (0x0C000000 | ((x) & 0x00fffffe)) #define TMIOFB_ACC_SSADR(x) (0x0D000000 | ((x) & 0x00fffffe)) #define TMIOFB_ACC_DHPIX(x) (0x0E000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_DVPIX(x) (0x0F000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_SHPIX(x) (0x10000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_SVPIX(x) (0x11000000 | ((x) & 0x000003ff)) #define TMIOFB_ACC_LBINI(x) (0x12000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_LBK2(x) (0x13000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_SHBINI(x) (0x14000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_SHBK2(x) (0x15000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_SVBINI(x) (0x16000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_SVBK2(x) (0x17000000 | ((x) & 0x0000ffff)) #define TMIOFB_ACC_CMGO 0x20000000 #define TMIOFB_ACC_CMGO_CEND 0x00000001 #define TMIOFB_ACC_CMGO_INT 0x00000002 #define TMIOFB_ACC_CMGO_CMOD 0x00000010 #define TMIOFB_ACC_CMGO_CDVRV 0x00000020 #define TMIOFB_ACC_CMGO_CDHRV 0x00000040 #define TMIOFB_ACC_CMGO_RUND 0x00008000 #define TMIOFB_ACC_SCGO 0x21000000 #define TMIOFB_ACC_SCGO_CEND 0x00000001 #define TMIOFB_ACC_SCGO_INT 0x00000002 #define TMIOFB_ACC_SCGO_ROP3 0x00000004 #define TMIOFB_ACC_SCGO_TRNS 0x00000008 #define TMIOFB_ACC_SCGO_DVRV 0x00000010 #define TMIOFB_ACC_SCGO_DHRV 0x00000020 #define TMIOFB_ACC_SCGO_SVRV 0x00000040 #define TMIOFB_ACC_SCGO_SHRV 0x00000080 #define TMIOFB_ACC_SCGO_DSTXY 0x00008000 #define TMIOFB_ACC_SBGO 0x22000000 #define TMIOFB_ACC_SBGO_CEND 0x00000001 #define TMIOFB_ACC_SBGO_INT 0x00000002 #define TMIOFB_ACC_SBGO_DVRV 0x00000010 #define TMIOFB_ACC_SBGO_DHRV 0x00000020 #define TMIOFB_ACC_SBGO_SVRV 0x00000040 #define TMIOFB_ACC_SBGO_SHRV 0x00000080 #define TMIOFB_ACC_SBGO_SBMD 0x00000100 #define TMIOFB_ACC_FLGO 0x23000000 #define TMIOFB_ACC_FLGO_CEND 0x00000001 #define TMIOFB_ACC_FLGO_INT 0x00000002 #define TMIOFB_ACC_FLGO_ROP3 0x00000004 #define TMIOFB_ACC_LDGO 0x24000000 #define TMIOFB_ACC_LDGO_CEND 0x00000001 #define TMIOFB_ACC_LDGO_INT 0x00000002 #define TMIOFB_ACC_LDGO_ROP3 0x00000004 #define TMIOFB_ACC_LDGO_ENDPX 0x00000008 #define TMIOFB_ACC_LDGO_LVRV 0x00000010 #define TMIOFB_ACC_LDGO_LHRV 0x00000020 #define TMIOFB_ACC_LDGO_LDMOD 0x00000040 /* a FIFO is always allocated, even if acceleration is not used */ #define TMIOFB_FIFO_SIZE 512 /* * LCD Host Controller Configuration Register * * This iomem area supports only 16-bit IO. */ #define CCR_CMD 0x04 /* Command */ #define CCR_REVID 0x08 /* Revision ID */ #define CCR_BASEL 0x10 /* LCD Control Reg Base Addr Low */ #define CCR_BASEH 0x12 /* LCD Control Reg Base Addr High */ #define CCR_UGCC 0x40 /* Unified Gated Clock Control */ #define CCR_GCC 0x42 /* Gated Clock Control */ #define CCR_USC 0x50 /* Unified Software Clear */ #define CCR_VRAMRTC 0x60 /* VRAM Timing Control */ /* 0x61 VRAM Refresh Control */ #define CCR_VRAMSAC 0x62 /* VRAM Access Control */ /* 0x63 VRAM Status */ #define CCR_VRAMBC 0x64 /* VRAM Block Control */ /* * LCD Control Register * * This iomem area supports only 16-bit IO. */ #define LCR_UIS 0x000 /* Unified Interrupt Status */ #define LCR_VHPN 0x008 /* VRAM Horizontal Pixel Number */ #define LCR_CFSAL 0x00a /* Command FIFO Start Address Low */ #define LCR_CFSAH 0x00c /* Command FIFO Start Address High */ #define LCR_CFS 0x00e /* Command FIFO Size */ #define LCR_CFWS 0x010 /* Command FIFO Writeable Size */ #define LCR_BBIE 0x012 /* BitBLT Interrupt Enable */ #define LCR_BBISC 0x014 /* BitBLT Interrupt Status and Clear */ #define LCR_CCS 0x016 /* Command Count Status */ #define LCR_BBES 0x018 /* BitBLT Execution Status */ #define LCR_CMDL 0x01c /* Command Low */ #define LCR_CMDH 0x01e /* Command High */ #define LCR_CFC 0x022 /* Command FIFO Clear */ #define LCR_CCIFC 0x024 /* CMOS Camera IF Control */ #define LCR_HWT 0x026 /* Hardware Test */ #define LCR_LCDCCRC 0x100 /* LCDC Clock and Reset Control */ #define LCR_LCDCC 0x102 /* LCDC Control */ #define LCR_LCDCOPC 0x104 /* LCDC Output Pin Control */ #define LCR_LCDIS 0x108 /* LCD Interrupt Status */ #define LCR_LCDIM 0x10a /* LCD Interrupt Mask */ #define LCR_LCDIE 0x10c /* LCD Interrupt Enable */ #define LCR_GDSAL 0x122 /* Graphics Display Start Address Low */ #define LCR_GDSAH 0x124 /* Graphics Display Start Address High */ #define LCR_VHPCL 0x12a /* VRAM Horizontal Pixel Count Low */ #define LCR_VHPCH 0x12c /* VRAM Horizontal Pixel Count High */ #define LCR_GM 0x12e /* Graphic Mode(VRAM access enable) */ #define LCR_HT 0x140 /* Horizontal Total */ #define LCR_HDS 0x142 /* Horizontal Display Start */ #define LCR_HSS 0x144 /* H-Sync Start */ #define LCR_HSE 0x146 /* H-Sync End */ #define LCR_HNP 0x14c /* Horizontal Number of Pixels */ #define LCR_VT 0x150 /* Vertical Total */ #define LCR_VDS 0x152 /* Vertical Display Start */ #define LCR_VSS 0x154 /* V-Sync Start */ #define LCR_VSE 0x156 /* V-Sync End */ #define LCR_CDLN 0x160 /* Current Display Line Number */ #define LCR_ILN 0x162 /* Interrupt Line Number */ #define LCR_SP 0x164 /* Sync Polarity */ #define LCR_MISC 0x166 /* MISC(RGB565 mode) */ #define LCR_VIHSS 0x16a /* Video Interface H-Sync Start */ #define LCR_VIVS 0x16c /* Video Interface Vertical Start */ #define LCR_VIVE 0x16e /* Video Interface Vertical End */ #define LCR_VIVSS 0x170 /* Video Interface V-Sync Start */ #define LCR_VCCIS 0x17e /* Video / CMOS Camera Interface Select */ #define LCR_VIDWSAL 0x180 /* VI Data Write Start Address Low */ #define LCR_VIDWSAH 0x182 /* VI Data Write Start Address High */ #define LCR_VIDRSAL 0x184 /* VI Data Read Start Address Low */ #define LCR_VIDRSAH 0x186 /* VI Data Read Start Address High */ #define LCR_VIPDDST 0x188 /* VI Picture Data Display Start Timing */ #define LCR_VIPDDET 0x186 /* VI Picture Data Display End Timing */ #define LCR_VIE 0x18c /* Video Interface Enable */ #define LCR_VCS 0x18e /* Video/Camera Select */ #define LCR_VPHWC 0x194 /* Video Picture Horizontal Wait Count */ #define LCR_VPHS 0x196 /* Video Picture Horizontal Size */ #define LCR_VPVWC 0x198 /* Video Picture Vertical Wait Count */ #define LCR_VPVS 0x19a /* Video Picture Vertical Size */ #define LCR_PLHPIX 0x1a0 /* PLHPIX */ #define LCR_XS 0x1a2 /* XStart */ #define LCR_XCKHW 0x1a4 /* XCK High Width */ #define LCR_STHS 0x1a8 /* STH Start */ #define LCR_VT2 0x1aa /* Vertical Total */ #define LCR_YCKSW 0x1ac /* YCK Start Wait */ #define LCR_YSTS 0x1ae /* YST Start */ #define LCR_PPOLS 0x1b0 /* #PPOL Start */ #define LCR_PRECW 0x1b2 /* PREC Width */ #define LCR_VCLKHW 0x1b4 /* VCLK High Width */ #define LCR_OC 0x1b6 /* Output Control */ static char *mode_option; struct tmiofb_par { u32 pseudo_palette[16]; #ifdef CONFIG_FB_TMIO_ACCELL wait_queue_head_t wait_acc; bool use_polling; #endif void __iomem *ccr; void __iomem *lcr; }; /*--------------------------------------------------------------------------*/ /* * reasons for an interrupt: * uis bbisc lcdis * 0100 0001 accelerator command completed * 2000 0001 vsync start * 2000 0002 display start * 2000 0004 line number match(0x1ff mask???) */ static irqreturn_t tmiofb_irq(int irq, void *__info) { struct fb_info *info = __info; struct tmiofb_par *par = info->par; unsigned int bbisc = tmio_ioread16(par->lcr + LCR_BBISC); tmio_iowrite16(bbisc, par->lcr + LCR_BBISC); #ifdef CONFIG_FB_TMIO_ACCELL /* * We were in polling mode and now we got correct irq. * Switch back to IRQ-based sync of command FIFO */ if (unlikely(par->use_polling && irq != -1)) { printk(KERN_INFO "tmiofb: switching to waitq\n"); par->use_polling = false; } if (bbisc & 1) wake_up(&par->wait_acc); #endif return IRQ_HANDLED; } /*--------------------------------------------------------------------------*/ /* * Turns off the LCD controller and LCD host controller. */ static int tmiofb_hw_stop(struct platform_device *dev) { struct tmio_fb_data *data = dev_get_platdata(&dev->dev); struct fb_info *info = platform_get_drvdata(dev); struct tmiofb_par *par = info->par; tmio_iowrite16(0, par->ccr + CCR_UGCC); tmio_iowrite16(0, par->lcr + LCR_GM); data->lcd_set_power(dev, 0); tmio_iowrite16(0x0010, par->lcr + LCR_LCDCCRC); return 0; } /* * Initializes the LCD host controller. */ static int tmiofb_hw_init(struct platform_device *dev) { const struct mfd_cell *cell = mfd_get_cell(dev); struct fb_info *info = platform_get_drvdata(dev); struct tmiofb_par *par = info->par; const struct resource *nlcr = &cell->resources[0]; const struct resource *vram = &cell->resources[2]; unsigned long base; if (nlcr == NULL || vram == NULL) return -EINVAL; base = nlcr->start; tmio_iowrite16(0x003a, par->ccr + CCR_UGCC); tmio_iowrite16(0x003a, par->ccr + CCR_GCC); tmio_iowrite16(0x3f00, par->ccr + CCR_USC); msleep(2); /* wait for device to settle */ tmio_iowrite16(0x0000, par->ccr + CCR_USC); tmio_iowrite16(base >> 16, par->ccr + CCR_BASEH); tmio_iowrite16(base, par->ccr + CCR_BASEL); tmio_iowrite16(0x0002, par->ccr + CCR_CMD); /* base address enable */ tmio_iowrite16(0x40a8, par->ccr + CCR_VRAMRTC); /* VRAMRC, VRAMTC */ tmio_iowrite16(0x0018, par->ccr + CCR_VRAMSAC); /* VRAMSTS, VRAMAC */ tmio_iowrite16(0x0002, par->ccr + CCR_VRAMBC); msleep(2); /* wait for device to settle */ tmio_iowrite16(0x000b, par->ccr + CCR_VRAMBC); base = vram->start + info->screen_size; tmio_iowrite16(base >> 16, par->lcr + LCR_CFSAH); tmio_iowrite16(base, par->lcr + LCR_CFSAL); tmio_iowrite16(TMIOFB_FIFO_SIZE - 1, par->lcr + LCR_CFS); tmio_iowrite16(1, par->lcr + LCR_CFC); tmio_iowrite16(1, par->lcr + LCR_BBIE); tmio_iowrite16(0, par->lcr + LCR_CFWS); return 0; } /* * Sets the LCD controller's output resolution and pixel clock */ static void tmiofb_hw_mode(struct platform_device *dev) { struct tmio_fb_data *data = dev_get_platdata(&dev->dev); struct fb_info *info = platform_get_drvdata(dev); struct fb_videomode *mode = info->mode; struct tmiofb_par *par = info->par; unsigned int i; tmio_iowrite16(0, par->lcr + LCR_GM); data->lcd_set_power(dev, 0); tmio_iowrite16(0x0010, par->lcr + LCR_LCDCCRC); data->lcd_mode(dev, mode); data->lcd_set_power(dev, 1); tmio_iowrite16(info->fix.line_length, par->lcr + LCR_VHPN); tmio_iowrite16(0, par->lcr + LCR_GDSAH); tmio_iowrite16(0, par->lcr + LCR_GDSAL); tmio_iowrite16(info->fix.line_length >> 16, par->lcr + LCR_VHPCH); tmio_iowrite16(info->fix.line_length, par->lcr + LCR_VHPCL); tmio_iowrite16(i = 0, par->lcr + LCR_HSS); tmio_iowrite16(i += mode->hsync_len, par->lcr + LCR_HSE); tmio_iowrite16(i += mode->left_margin, par->lcr + LCR_HDS); tmio_iowrite16(i += mode->xres + mode->right_margin, par->lcr + LCR_HT); tmio_iowrite16(mode->xres, par->lcr + LCR_HNP); tmio_iowrite16(i = 0, par->lcr + LCR_VSS); tmio_iowrite16(i += mode->vsync_len, par->lcr + LCR_VSE); tmio_iowrite16(i += mode->upper_margin, par->lcr + LCR_VDS); tmio_iowrite16(i += mode->yres, par->lcr + LCR_ILN); tmio_iowrite16(i += mode->lower_margin, par->lcr + LCR_VT); tmio_iowrite16(3, par->lcr + LCR_MISC); /* RGB565 mode */ tmio_iowrite16(1, par->lcr + LCR_GM); /* VRAM enable */ tmio_iowrite16(0x4007, par->lcr + LCR_LCDCC); tmio_iowrite16(3, par->lcr + LCR_SP); /* sync polarity */ tmio_iowrite16(0x0010, par->lcr + LCR_LCDCCRC); msleep(5); /* wait for device to settle */ tmio_iowrite16(0x0014, par->lcr + LCR_LCDCCRC); /* STOP_CKP */ msleep(5); /* wait for device to settle */ tmio_iowrite16(0x0015, par->lcr + LCR_LCDCCRC); /* STOP_CKP|SOFT_RESET*/ tmio_iowrite16(0xfffa, par->lcr + LCR_VCS); } /*--------------------------------------------------------------------------*/ #ifdef CONFIG_FB_TMIO_ACCELL static int __must_check tmiofb_acc_wait(struct fb_info *info, unsigned int ccs) { struct tmiofb_par *par = info->par; /* * This code can be called with interrupts disabled. * So instead of relaying on irq to trigger the event, * poll the state till the necessary command is executed. */ if (irqs_disabled() || par->use_polling) { int i = 0; while (tmio_ioread16(par->lcr + LCR_CCS) > ccs) { udelay(1); i++; if (i > 10000) { pr_err("tmiofb: timeout waiting for %d\n", ccs); return -ETIMEDOUT; } tmiofb_irq(-1, info); } } else { if (!wait_event_interruptible_timeout(par->wait_acc, tmio_ioread16(par->lcr + LCR_CCS) <= ccs, 1000)) { pr_err("tmiofb: timeout waiting for %d\n", ccs); return -ETIMEDOUT; } } return 0; } /* * Writes an accelerator command to the accelerator's FIFO. */ static int tmiofb_acc_write(struct fb_info *info, const u32 *cmd, unsigned int count) { struct tmiofb_par *par = info->par; int ret; ret = tmiofb_acc_wait(info, TMIOFB_FIFO_SIZE - count); if (ret) return ret; for (; count; count--, cmd++) { tmio_iowrite16(*cmd >> 16, par->lcr + LCR_CMDH); tmio_iowrite16(*cmd, par->lcr + LCR_CMDL); } return ret; } /* * Wait for the accelerator to finish its operations before writing * to the framebuffer for consistent display output. */ static int tmiofb_sync(struct fb_info *fbi) { struct tmiofb_par *par = fbi->par; int ret; int i = 0; ret = tmiofb_acc_wait(fbi, 0); while (tmio_ioread16(par->lcr + LCR_BBES) & 2) { /* blit active */ udelay(1); i++ ; if (i > 10000) { printk(KERN_ERR "timeout waiting for blit to end!\n"); return -ETIMEDOUT; } } return ret; } static void tmiofb_fillrect(struct fb_info *fbi, const struct fb_fillrect *rect) { const u32 cmd[] = { TMIOFB_ACC_DSADR((rect->dy * fbi->mode->xres + rect->dx) * 2), TMIOFB_ACC_DHPIX(rect->width - 1), TMIOFB_ACC_DVPIX(rect->height - 1), TMIOFB_ACC_FILL(rect->color), TMIOFB_ACC_FLGO, }; if (fbi->state != FBINFO_STATE_RUNNING || fbi->flags & FBINFO_HWACCEL_DISABLED) { cfb_fillrect(fbi, rect); return; } tmiofb_acc_write(fbi, cmd, ARRAY_SIZE(cmd)); } static void tmiofb_copyarea(struct fb_info *fbi, const struct fb_copyarea *area) { const u32 cmd[] = { TMIOFB_ACC_DSADR((area->dy * fbi->mode->xres + area->dx) * 2), TMIOFB_ACC_DHPIX(area->width - 1), TMIOFB_ACC_DVPIX(area->height - 1), TMIOFB_ACC_SSADR((area->sy * fbi->mode->xres + area->sx) * 2), TMIOFB_ACC_SCGO, }; if (fbi->state != FBINFO_STATE_RUNNING || fbi->flags & FBINFO_HWACCEL_DISABLED) { cfb_copyarea(fbi, area); return; } tmiofb_acc_write(fbi, cmd, ARRAY_SIZE(cmd)); } #endif static void tmiofb_clearscreen(struct fb_info *info) { const struct fb_fillrect rect = { .dx = 0, .dy = 0, .width = info->mode->xres, .height = info->mode->yres, .color = 0, .rop = ROP_COPY, }; info->fbops->fb_fillrect(info, &rect); } static int tmiofb_vblank(struct fb_info *fbi, struct fb_vblank *vblank) { struct tmiofb_par *par = fbi->par; struct fb_videomode *mode = fbi->mode; unsigned int vcount = tmio_ioread16(par->lcr + LCR_CDLN); unsigned int vds = mode->vsync_len + mode->upper_margin; vblank->vcount = vcount; vblank->flags = FB_VBLANK_HAVE_VBLANK | FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC; if (vcount < mode->vsync_len) vblank->flags |= FB_VBLANK_VSYNCING; if (vcount < vds || vcount > vds + mode->yres) vblank->flags |= FB_VBLANK_VBLANKING; return 0; } static int tmiofb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg) { switch (cmd) { case FBIOGET_VBLANK: { struct fb_vblank vblank = {0}; void __user *argp = (void __user *) arg; tmiofb_vblank(fbi, &vblank); if (copy_to_user(argp, &vblank, sizeof vblank)) return -EFAULT; return 0; } #ifdef CONFIG_FB_TMIO_ACCELL case FBIO_TMIO_ACC_SYNC: tmiofb_sync(fbi); return 0; case FBIO_TMIO_ACC_WRITE: { u32 __user *argp = (void __user *) arg; u32 len; u32 acc[16]; if (get_user(len, argp)) return -EFAULT; if (len > ARRAY_SIZE(acc)) return -EINVAL; if (copy_from_user(acc, argp + 1, sizeof(u32) * len)) return -EFAULT; return tmiofb_acc_write(fbi, acc, len); } #endif } return -ENOTTY; } /*--------------------------------------------------------------------------*/ /* Select the smallest mode that allows the desired resolution to be * displayed. If desired, the x and y parameters can be rounded up to * match the selected mode. */ static struct fb_videomode * tmiofb_find_mode(struct fb_info *info, struct fb_var_screeninfo *var) { struct tmio_fb_data *data = dev_get_platdata(info->device); struct fb_videomode *best = NULL; int i; for (i = 0; i < data->num_modes; i++) { struct fb_videomode *mode = data->modes + i; if (mode->xres >= var->xres && mode->yres >= var->yres && (!best || (mode->xres < best->xres && mode->yres < best->yres))) best = mode; } return best; } static int tmiofb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) { struct fb_videomode *mode; struct tmio_fb_data *data = dev_get_platdata(info->device); mode = tmiofb_find_mode(info, var); if (!mode || var->bits_per_pixel > 16) return -EINVAL; fb_videomode_to_var(var, mode); var->xres_virtual = mode->xres; var->yres_virtual = info->screen_size / (mode->xres * 2); if (var->yres_virtual < var->yres) return -EINVAL; var->xoffset = 0; var->yoffset = 0; var->bits_per_pixel = 16; var->grayscale = 0; var->red.offset = 11; var->red.length = 5; var->green.offset = 5; var->green.length = 6; var->blue.offset = 0; var->blue.length = 5; var->transp.offset = 0; var->transp.length = 0; var->nonstd = 0; var->height = data->height; /* mm */ var->width = data->width; /* mm */ var->rotate = 0; return 0; } static int tmiofb_set_par(struct fb_info *info) { struct fb_var_screeninfo *var = &info->var; struct fb_videomode *mode; mode = tmiofb_find_mode(info, var); if (!mode) return -EINVAL; info->mode = mode; info->fix.line_length = info->mode->xres * var->bits_per_pixel / 8; tmiofb_hw_mode(to_platform_device(info->device)); tmiofb_clearscreen(info); return 0; } static int tmiofb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct tmiofb_par *par = info->par; if (regno < ARRAY_SIZE(par->pseudo_palette)) { par->pseudo_palette[regno] = ((red & 0xf800)) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); return 0; } return -EINVAL; } static int tmiofb_blank(int blank, struct fb_info *info) { /* * everything is done in lcd/bl drivers. * this is purely to make sysfs happy and work. */ return 0; } static struct fb_ops tmiofb_ops = { .owner = THIS_MODULE, .fb_ioctl = tmiofb_ioctl, .fb_check_var = tmiofb_check_var, .fb_set_par = tmiofb_set_par, .fb_setcolreg = tmiofb_setcolreg, .fb_blank = tmiofb_blank, .fb_imageblit = cfb_imageblit, #ifdef CONFIG_FB_TMIO_ACCELL .fb_sync = tmiofb_sync, .fb_fillrect = tmiofb_fillrect, .fb_copyarea = tmiofb_copyarea, #else .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, #endif }; /*--------------------------------------------------------------------------*/ static int tmiofb_probe(struct platform_device *dev) { const struct mfd_cell *cell = mfd_get_cell(dev); struct tmio_fb_data *data = dev_get_platdata(&dev->dev); struct resource *ccr = platform_get_resource(dev, IORESOURCE_MEM, 1); struct resource *lcr = platform_get_resource(dev, IORESOURCE_MEM, 0); struct resource *vram = platform_get_resource(dev, IORESOURCE_MEM, 2); int irq = platform_get_irq(dev, 0); struct fb_info *info; struct tmiofb_par *par; int retval; /* * This is the only way ATM to disable the fb */ if (data == NULL) { dev_err(&dev->dev, "NULL platform data!\n"); return -EINVAL; } if (ccr == NULL || lcr == NULL || vram == NULL || irq < 0) { dev_err(&dev->dev, "missing resources\n"); return -EINVAL; } info = framebuffer_alloc(sizeof(struct tmiofb_par), &dev->dev); if (!info) return -ENOMEM; par = info->par; #ifdef CONFIG_FB_TMIO_ACCELL init_waitqueue_head(&par->wait_acc); par->use_polling = true; info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; #else info->flags = FBINFO_DEFAULT; #endif info->fbops = &tmiofb_ops; strcpy(info->fix.id, "tmio-fb"); info->fix.smem_start = vram->start; info->fix.smem_len = resource_size(vram); info->fix.type = FB_TYPE_PACKED_PIXELS; info->fix.visual = FB_VISUAL_TRUECOLOR; info->fix.mmio_start = lcr->start; info->fix.mmio_len = resource_size(lcr); info->fix.accel = FB_ACCEL_NONE; info->screen_size = info->fix.smem_len - (4 * TMIOFB_FIFO_SIZE); info->pseudo_palette = par->pseudo_palette; par->ccr = ioremap(ccr->start, resource_size(ccr)); if (!par->ccr) { retval = -ENOMEM; goto err_ioremap_ccr; } par->lcr = ioremap(info->fix.mmio_start, info->fix.mmio_len); if (!par->lcr) { retval = -ENOMEM; goto err_ioremap_lcr; } info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); if (!info->screen_base) { retval = -ENOMEM; goto err_ioremap_vram; } retval = request_irq(irq, &tmiofb_irq, 0, dev_name(&dev->dev), info); if (retval) goto err_request_irq; platform_set_drvdata(dev, info); retval = fb_find_mode(&info->var, info, mode_option, data->modes, data->num_modes, data->modes, 16); if (!retval) { retval = -EINVAL; goto err_find_mode; } if (cell->enable) { retval = cell->enable(dev); if (retval) goto err_enable; } retval = tmiofb_hw_init(dev); if (retval) goto err_hw_init; fb_videomode_to_modelist(data->modes, data->num_modes, &info->modelist); retval = register_framebuffer(info); if (retval < 0) goto err_register_framebuffer; fb_info(info, "%s frame buffer device\n", info->fix.id); return 0; err_register_framebuffer: /*err_set_par:*/ tmiofb_hw_stop(dev); err_hw_init: if (cell->disable) cell->disable(dev); err_enable: err_find_mode: free_irq(irq, info); err_request_irq: iounmap(info->screen_base); err_ioremap_vram: iounmap(par->lcr); err_ioremap_lcr: iounmap(par->ccr); err_ioremap_ccr: framebuffer_release(info); return retval; } static int tmiofb_remove(struct platform_device *dev) { const struct mfd_cell *cell = mfd_get_cell(dev); struct fb_info *info = platform_get_drvdata(dev); int irq = platform_get_irq(dev, 0); struct tmiofb_par *par; if (info) { par = info->par; unregister_framebuffer(info); tmiofb_hw_stop(dev); if (cell->disable) cell->disable(dev); free_irq(irq, info); iounmap(info->screen_base); iounmap(par->lcr); iounmap(par->ccr); framebuffer_release(info); } return 0; } #ifdef DEBUG static void tmiofb_dump_regs(struct platform_device *dev) { struct fb_info *info = platform_get_drvdata(dev); struct tmiofb_par *par = info->par; printk(KERN_DEBUG "lhccr:\n"); #define CCR_PR(n) printk(KERN_DEBUG "\t" #n " = \t%04x\n",\ tmio_ioread16(par->ccr + CCR_ ## n)); CCR_PR(CMD); CCR_PR(REVID); CCR_PR(BASEL); CCR_PR(BASEH); CCR_PR(UGCC); CCR_PR(GCC); CCR_PR(USC); CCR_PR(VRAMRTC); CCR_PR(VRAMSAC); CCR_PR(VRAMBC); #undef CCR_PR printk(KERN_DEBUG "lcr: \n"); #define LCR_PR(n) printk(KERN_DEBUG "\t" #n " = \t%04x\n",\ tmio_ioread16(par->lcr + LCR_ ## n)); LCR_PR(UIS); LCR_PR(VHPN); LCR_PR(CFSAL); LCR_PR(CFSAH); LCR_PR(CFS); LCR_PR(CFWS); LCR_PR(BBIE); LCR_PR(BBISC); LCR_PR(CCS); LCR_PR(BBES); LCR_PR(CMDL); LCR_PR(CMDH); LCR_PR(CFC); LCR_PR(CCIFC); LCR_PR(HWT); LCR_PR(LCDCCRC); LCR_PR(LCDCC); LCR_PR(LCDCOPC); LCR_PR(LCDIS); LCR_PR(LCDIM); LCR_PR(LCDIE); LCR_PR(GDSAL); LCR_PR(GDSAH); LCR_PR(VHPCL); LCR_PR(VHPCH); LCR_PR(GM); LCR_PR(HT); LCR_PR(HDS); LCR_PR(HSS); LCR_PR(HSE); LCR_PR(HNP); LCR_PR(VT); LCR_PR(VDS); LCR_PR(VSS); LCR_PR(VSE); LCR_PR(CDLN); LCR_PR(ILN); LCR_PR(SP); LCR_PR(MISC); LCR_PR(VIHSS); LCR_PR(VIVS); LCR_PR(VIVE); LCR_PR(VIVSS); LCR_PR(VCCIS); LCR_PR(VIDWSAL); LCR_PR(VIDWSAH); LCR_PR(VIDRSAL); LCR_PR(VIDRSAH); LCR_PR(VIPDDST); LCR_PR(VIPDDET); LCR_PR(VIE); LCR_PR(VCS); LCR_PR(VPHWC); LCR_PR(VPHS); LCR_PR(VPVWC); LCR_PR(VPVS); LCR_PR(PLHPIX); LCR_PR(XS); LCR_PR(XCKHW); LCR_PR(STHS); LCR_PR(VT2); LCR_PR(YCKSW); LCR_PR(YSTS); LCR_PR(PPOLS); LCR_PR(PRECW); LCR_PR(VCLKHW); LCR_PR(OC); #undef LCR_PR } #endif #ifdef CONFIG_PM static int tmiofb_suspend(struct platform_device *dev, pm_message_t state) { struct fb_info *info = platform_get_drvdata(dev); #ifdef CONFIG_FB_TMIO_ACCELL struct tmiofb_par *par = info->par; #endif const struct mfd_cell *cell = mfd_get_cell(dev); int retval = 0; console_lock(); fb_set_suspend(info, 1); if (info->fbops->fb_sync) info->fbops->fb_sync(info); #ifdef CONFIG_FB_TMIO_ACCELL /* * The fb should be usable even if interrupts are disabled (and they are * during suspend/resume). Switch temporary to forced polling. */ printk(KERN_INFO "tmiofb: switching to polling\n"); par->use_polling = true; #endif tmiofb_hw_stop(dev); if (cell->suspend) retval = cell->suspend(dev); console_unlock(); return retval; } static int tmiofb_resume(struct platform_device *dev) { struct fb_info *info = platform_get_drvdata(dev); const struct mfd_cell *cell = mfd_get_cell(dev); int retval = 0; console_lock(); if (cell->resume) { retval = cell->resume(dev); if (retval) goto out; } tmiofb_irq(-1, info); tmiofb_hw_init(dev); tmiofb_hw_mode(dev); fb_set_suspend(info, 0); out: console_unlock(); return retval; } #else #define tmiofb_suspend NULL #define tmiofb_resume NULL #endif static struct platform_driver tmiofb_driver = { .driver.name = "tmio-fb", .driver.owner = THIS_MODULE, .probe = tmiofb_probe, .remove = tmiofb_remove, .suspend = tmiofb_suspend, .resume = tmiofb_resume, }; /*--------------------------------------------------------------------------*/ #ifndef MODULE static void __init tmiofb_setup(char *options) { char *this_opt; if (!options || !*options) return; while ((this_opt = strsep(&options, ",")) != NULL) { if (!*this_opt) continue; /* * FIXME */ } } #endif static int __init tmiofb_init(void) { #ifndef MODULE char *option = NULL; if (fb_get_options("tmiofb", &option)) return -ENODEV; tmiofb_setup(option); #endif return platform_driver_register(&tmiofb_driver); } static void __exit tmiofb_cleanup(void) { platform_driver_unregister(&tmiofb_driver); } module_init(tmiofb_init); module_exit(tmiofb_cleanup); MODULE_DESCRIPTION("TMIO framebuffer driver"); MODULE_AUTHOR("Chris Humbert, Dirk Opfer, Dmitry Baryshkov"); MODULE_LICENSE("GPL");
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