源码路径：
kernel-3.18/arch/arm/boot/dts/mt6580.dtsi
kernel-3.18/drivers/misc/mediatek/video/common/mtkfb.c
kernel-3.18/drivers/misc/mediatek/video/mt6580/primary_display.c
kernel-3.18/drivers/misc/mediatek/video/mt6580/disp_lcm.c
kernel-3.18/drivers/misc/mediatek/lcm/mt65xx_lcm_list.c
kernel-3.18/drivers/misc/mediatek/lcm/s6d77a1a01_fwvga_dsi_vdo/s6d77a1a01_fwvga_dsi_vdo.c（这个因IC而异）
一、 添加DTS节点
mtkfb: mtkfb@0 { compatible = "mediatek,mtkfb"; };
二、mtkfb驱动
/* * Copyright (C) 2015 MediaTek Inc. * * 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/module.h> #include <linux/mm.h> #include <linux/init.h> #include <linux/fb.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/kthread.h> #include <linux/vmalloc.h> #include <linux/semaphore.h> #include <linux/mutex.h> #include <linux/suspend.h> #include <linux/of_fdt.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/dma-buf.h> #include <linux/uaccess.h> #include <linux/atomic.h> #include <asm/cacheflush.h> #include <linux/io.h> #include <mt-plat/dma.h> #include <linux/compat.h> #include <linux/dma-mapping.h> #if defined(COMMON_DISP_LOG) #include "disp_log.h" #include "disp_debug.h" #include "disp_recorder.h" #include "mtkfb_debug.h" #else #include "debug.h" #include "ddp_log.h" #include "disp_drv_log.h" #include "display_recorder.h" #endif #include "disp_assert_layer.h" #include "ddp_hal.h" #include "disp_lcm.h" #include "mtkfb.h" #include "mtkfb_console.h" #include "mtkfb_fence.h" #include "mtkfb_info.h" #include "ddp_ovl.h" #include "disp_drv_platform.h" #include "primary_display.h" #include "ddp_dump.h" #include "fbconfig_kdebug.h" #include "ddp_manager.h" #include "mtk_ovl.h" #include "ion_drv.h" #include "ddp_drv.h" #ifdef DISP_GPIO_DTS #include "disp_dts_gpio.h" /* set gpio via DTS */ #endif #include "disp_helper.h" #define ALIGN_TO(x, n) (((x) + ((n) - 1)) & ~((n) - 1)) /* xuecheng, remove this because we use session now */ /* mtk_dispif_info_t dispif_info[MTKFB_MAX_DISPLAY_COUNT]; */ struct notifier_block pm_nb; unsigned int EnableVSyncLog = 0; static u32 MTK_FB_XRES; static u32 MTK_FB_YRES; static u32 MTK_FB_BPP; static u32 MTK_FB_PAGES; static u32 fb_xres_update; static u32 fb_yres_update; static bool no_update; #define MTK_FB_XRESV (ALIGN_TO(MTK_FB_XRES, MTK_FB_ALIGNMENT)) #define MTK_FB_YRESV (MTK_FB_YRES * MTK_FB_PAGES) /* For page flipping */ #define MTK_FB_BYPP ((MTK_FB_BPP + 7) >> 3) #define MTK_FB_LINE (ALIGN_TO(MTK_FB_XRES, MTK_FB_ALIGNMENT) * MTK_FB_BYPP) #define MTK_FB_SIZE (MTK_FB_LINE * MTK_FB_YRES) #define MTK_FB_SIZEV (MTK_FB_LINE * MTK_FB_YRES * MTK_FB_PAGES) #define CHECK_RET(expr) \ do { \ int ret = (expr); \ ASSERT(0 == ret); \ } while (0) static size_t mtkfb_log_on = true; #define MTKFB_LOG(fmt, arg...) \ do { \ if (mtkfb_log_on) \ pr_debug("DISP/MTKFB " fmt, ##arg); \ } while (0) /* always show this debug info while the global debug log is off */ #define MTKFB_LOG_DBG(fmt, arg...) \ do { \ if (!mtkfb_log_on) \ DISPMSG(fmt, ##arg); \ } while (0) #define MTKFB_FUNC() \ do { \ if (mtkfb_log_on) \ DISPMSG("[Func]%s\n", __func__); \ } while (0) #define PRNWARN(fmt, args...) pr_warn("DISP/MTKFB " fmt, ##args) #define PRNERR(fmt, args...) pr_err("DISP/MTKFB " fmt, ##args) void mtkfb_log_enable(int enable) { mtkfb_log_on = enable; MTKFB_LOG("mtkfb log %s\n", enable ? "enabled" : "disabled"); } /* --------------------------------------------------------------------------- */ /* local variables */ /* --------------------------------------------------------------------------- */ unsigned long fb_pa = 0; static const struct timeval FRAME_INTERVAL = { 0, 30000 }; /* 33ms */ atomic_t has_pending_update = ATOMIC_INIT(0); struct fb_overlay_layer video_layerInfo; uint32_t dbr_backup = 0; uint32_t dbg_backup = 0; uint32_t dbb_backup = 0; bool fblayer_dither_needed = false; bool is_ipoh_bootup = false; struct fb_info *mtkfb_fbi; struct fb_overlay_layer fb_layer_context; mtk_dispif_info_t dispif_info[MTKFB_MAX_DISPLAY_COUNT]; unsigned int FB_LAYER = 2; bool is_early_suspended = false; char mtkfb_lcm_name[256] = { 0 }; /** * This mutex is used to prevent tearing due to page flipping when adbd is * reading the front buffer */ DEFINE_SEMAPHORE(sem_flipping); DEFINE_SEMAPHORE(sem_early_suspend); DEFINE_SEMAPHORE(sem_overlay_buffer); DEFINE_MUTEX(OverlaySettingMutex); atomic_t OverlaySettingDirtyFlag = ATOMIC_INIT(0); atomic_t OverlaySettingApplied = ATOMIC_INIT(0); unsigned int PanDispSettingPending = 0; unsigned int PanDispSettingDirty = 0; unsigned int PanDispSettingApplied = 0; DECLARE_WAIT_QUEUE_HEAD(reg_update_wq); unsigned int need_esd_check = 0; DECLARE_WAIT_QUEUE_HEAD(esd_check_wq); /* extern unsigned int disp_running; */ /* extern wait_queue_head_t disp_done_wq; */ DEFINE_MUTEX(ScreenCaptureMutex); static int sem_flipping_cnt = 1; static int sem_early_suspend_cnt = 1; static int vsync_cnt; /* extern BOOL is_engine_in_suspend_mode; */ /* extern BOOL is_lcm_in_suspend_mode; */ /* --------------------------------------------------------------------------- */ /* local function declarations */ /* --------------------------------------------------------------------------- */ static int init_framebuffer(struct fb_info *info); static int mtkfb_get_overlay_layer_info(struct fb_overlay_layer_info *layerInfo); /* --------------------------------------------------------------------------- */ /* Timer Routines */ /* --------------------------------------------------------------------------- */ unsigned int lcd_fps = 6000; wait_queue_head_t screen_update_wq; /* * --------------------------------------------------------------------------- * fbdev framework callbacks and the ioctl interface * --------------------------------------------------------------------------- */ /* Called each time the mtkfb device is opened */ static int mtkfb_open(struct fb_info *info, int user) { /* NOT_REFERENCED(info); */ /* NOT_REFERENCED(user); */ /* DISPFUNC();*/ DISPMSG("%s\n", __func__); MSG_FUNC_ENTER(); MSG_FUNC_LEAVE(); return 0; } /* Called when the mtkfb device is closed. We make sure that any pending * gfx DMA operations are ended, before we return. */ static int mtkfb_release(struct fb_info *info, int user) { /* NOT_REFERENCED(info); */ /* NOT_REFERENCED(user); */ DISPFUNC(); MSG_FUNC_ENTER(); MSG_FUNC_LEAVE(); return 0; } /* Store a single color palette entry into a pseudo palette or the hardware * palette if one is available. For now we support only 16bpp and thus store * the entry only to the pseudo palette. */ static int mtkfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, u_int transp, struct fb_info *info) { int r = 0; unsigned bpp, m; /* NOT_REFERENCED(transp); */ MSG_FUNC_ENTER(); bpp = info->var.bits_per_pixel; m = 1 << bpp; if (regno >= m) { r = -EINVAL; goto exit; } switch (bpp) { case 16: /* RGB 565 */ ((u32 *) (info->pseudo_palette))[regno] = ((red & 0xF800) | ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11)); break; case 32: /* ARGB8888 */ ((u32 *) (info->pseudo_palette))[regno] = (0xff000000) | ((red & 0xFF00) << 8) | ((green & 0xFF00)) | ((blue & 0xFF00) >> 8); break; /* TODO: RGB888, BGR888, ABGR8888 */ default: ASSERT(0); } exit: MSG_FUNC_LEAVE(); return r; } int mtkfb_set_backlight_level(unsigned int level) { MTKFB_FUNC(); DISPMSG("mtkfb_set_backlight_level:%d Start\n", level); primary_display_setbacklight(level); DISPMSG("mtkfb_set_backlight_level End\n"); return 0; } EXPORT_SYMBOL(mtkfb_set_backlight_level); int mtkfb_set_backlight_mode(unsigned int mode) { MTKFB_FUNC(); if (down_interruptible(&sem_flipping)) { DISPERR("[FB Driver] can't get semaphore:%d\n", __LINE__); return -ERESTARTSYS; } sem_flipping_cnt--; if (down_interruptible(&sem_early_suspend)) { DISPERR("[FB Driver] can't get semaphore:%d\n", __LINE__); sem_flipping_cnt++; up(&sem_flipping); return -ERESTARTSYS; } sem_early_suspend_cnt--; if (primary_display_is_sleepd()) goto End; /* DISP_SetBacklight_mode(mode); */ End: sem_flipping_cnt++; sem_early_suspend_cnt++; up(&sem_early_suspend); up(&sem_flipping); return 0; } EXPORT_SYMBOL(mtkfb_set_backlight_mode); int mtkfb_set_backlight_pwm(int div) { MTKFB_FUNC(); if (down_interruptible(&sem_flipping)) { DISPERR("[FB Driver] can't get semaphore:%d\n", __LINE__); return -ERESTARTSYS; } sem_flipping_cnt--; if (down_interruptible(&sem_early_suspend)) { DISPERR("[FB Driver] can't get semaphore:%d\n", __LINE__); sem_flipping_cnt++; up(&sem_flipping); return -ERESTARTSYS; } sem_early_suspend_cnt--; if (primary_display_is_sleepd()) goto End; /* DISP_SetPWM(div); */ End: sem_flipping_cnt++; sem_early_suspend_cnt++; up(&sem_early_suspend); up(&sem_flipping); return 0; } EXPORT_SYMBOL(mtkfb_set_backlight_pwm); int mtkfb_get_backlight_pwm(int div, unsigned int *freq) { /* DISP_GetPWM(div, freq); */ return 0; } EXPORT_SYMBOL(mtkfb_get_backlight_pwm); void mtkfb_waitVsync(void) { if (primary_display_is_sleepd()) { DISPMSG("[MTKFB_VSYNC]:mtkfb has suspend, return directly\n"); msleep(20); return; } vsync_cnt++; #ifdef CONFIG_FPGA_EARLY_PORTING msleep(20); #else primary_display_wait_for_vsync(NULL); #endif vsync_cnt--; } EXPORT_SYMBOL(mtkfb_waitVsync); static int _convert_fb_layer_to_disp_input(struct fb_overlay_layer *src, disp_input_config *dst) { dst->layer_id = src->layer_id; dst->dirty_roi_num = 0; if (!src->layer_enable) { dst->layer_enable = 0; return 0; } switch (src->src_fmt) { case MTK_FB_FORMAT_YUV422: dst->src_fmt = DISP_FORMAT_YUV422; break; case MTK_FB_FORMAT_RGB565: dst->src_fmt = DISP_FORMAT_RGB565; break; case MTK_FB_FORMAT_RGB888: dst->src_fmt = DISP_FORMAT_RGB888; break; case MTK_FB_FORMAT_BGR888: dst->src_fmt = DISP_FORMAT_BGR888; break; case MTK_FB_FORMAT_ARGB8888: dst->src_fmt = DISP_FORMAT_ARGB8888; break; case MTK_FB_FORMAT_ABGR8888: dst->src_fmt = DISP_FORMAT_ABGR8888; break; case MTK_FB_FORMAT_XRGB8888: dst->src_fmt = DISP_FORMAT_XRGB8888; break; case MTK_FB_FORMAT_XBGR8888: dst->src_fmt = DISP_FORMAT_XBGR8888; break; case MTK_FB_FORMAT_UYVY: dst->src_fmt = DISP_FORMAT_UYVY; break; case MTK_FB_FORMAT_BGRA8888: dst->src_fmt = DISP_FORMAT_BGRA8888; break; case MTK_FB_FORMAT_RGBX8888: dst->src_fmt = DISP_FORMAT_RGBX8888; break; default: DISPERR("Invalid color format: 0x%x\n", src->src_fmt); return -1; } dst->src_base_addr = src->src_base_addr; dst->security = src->security; dst->src_phy_addr = src->src_phy_addr; DISPMSG("_convert_fb_layer_to_disp_input, dst->addr=0xlx\n", (unsigned long)(dst->src_phy_addr)); dst->isTdshp = src->isTdshp; dst->next_buff_idx = src->next_buff_idx; dst->identity = src->identity; dst->connected_type = src->connected_type; /* set Alpha blending */ dst->alpha = src->alpha; if (MTK_FB_FORMAT_ARGB8888 == src->src_fmt || MTK_FB_FORMAT_ABGR8888 == src->src_fmt) dst->alpha_enable = true; else dst->alpha_enable = false; /* set src width, src height */ dst->src_offset_x = src->src_offset_x; dst->src_offset_y = src->src_offset_y; dst->src_width = src->src_width; dst->src_height = src->src_height; dst->tgt_offset_x = src->tgt_offset_x; dst->tgt_offset_y = src->tgt_offset_y; dst->tgt_width = src->tgt_width; dst->tgt_height = src->tgt_height; if (dst->tgt_width > dst->src_width) dst->tgt_width = dst->src_width; if (dst->tgt_height > dst->src_height) dst->tgt_height = dst->src_height; dst->src_pitch = src->src_pitch; /* set color key */ dst->src_color_key = src->src_color_key; dst->src_use_color_key = src->src_use_color_key; /* data transferring is triggerred in MTKFB_TRIG_OVERLAY_OUT */ dst->layer_enable = src->layer_enable; #if 1 DISPMSG("_convert_fb_layer_to_disp_input():id=%u, en=%u, next_idx=%u, vaddr=%p, paddr=%p,\n", dst->layer_id, dst->layer_enable, dst->next_buff_idx, dst->src_base_addr, dst->src_phy_addr); DISPMSG("src fmt=%u, dst fmt=%u, pitch=%u, xoff=%u, yoff=%u, w=%u, h=%u\n", src->src_fmt, dst->src_fmt, dst->src_pitch, dst->src_offset_x, dst->src_offset_y, dst->src_width, dst->src_height); DISPMSG("_convert_fb_layer_to_disp_input():target xoff=%u, target yoff=%u, target w=%u, target h=%u, aen=%u\n", dst->tgt_offset_x, dst->tgt_offset_y, dst->tgt_width, dst->tgt_height, dst->alpha_enable); #endif return 0; } static int mtkfb_pan_display_impl(struct fb_var_screeninfo *var, struct fb_info *info) { uint32_t offset = 0; uint32_t paStart = 0; char *vaStart = NULL, *vaEnd = NULL; int ret = 0; unsigned int src_pitch = 0; disp_session_input_config *session_input; disp_input_config *input; /* DISPFUNC(); */ if (no_update) { DISPMSG("FB_ACTIVATE_NO_UPDATE flag found, ignore mtkfb_pan_display_impl\n"); no_update = false; return ret; } DISPMSG("pan_display: offset(%u,%u), res(%u,%u), resv(%u,%u)\n", var->xoffset, var->yoffset, info->var.xres, info->var.yres, info->var.xres_virtual, info->var.yres_virtual); info->var.yoffset = var->yoffset; offset = var->yoffset * info->fix.line_length; paStart = fb_pa + offset; vaStart = info->screen_base + offset; vaEnd = vaStart + info->var.yres * info->fix.line_length; session_input = kzalloc(sizeof(*session_input), GFP_KERNEL); if (!session_input) ASSERT(0); /* pan display use layer 0 */ input = &session_input->config[0]; input->layer_id = 0; input->src_phy_addr = (void *)((unsigned long)paStart); input->src_base_addr = (void *)((unsigned long)vaStart); input->layer_id = primary_display_get_option("FB_LAYER"); input->layer_enable = 1; input->src_offset_x = 0; input->src_offset_y = 0; input->src_width = var->xres; input->src_height = var->yres; input->tgt_offset_x = 0; input->tgt_offset_y = 0; input->tgt_width = var->xres; input->tgt_height = var->yres; switch (var->bits_per_pixel) { case 16: input->src_fmt = DISP_FORMAT_RGB565; break; case 24: input->src_fmt = DISP_FORMAT_RGB888; break; case 32: input->src_fmt = (0 == var->blue.offset) ? DISP_FORMAT_BGRA8888 : DISP_FORMAT_RGBX8888; break; default: DISPERR("Invalid color format bpp: 0x%d\n", var->bits_per_pixel); kfree(session_input); return -1; } input->alpha_enable = false; input->alpha = 0xFF; input->next_buff_idx = -1; src_pitch = ALIGN_TO(var->xres, MTK_FB_ALIGNMENT); input->src_pitch = src_pitch; session_input->config_layer_num++; if (!is_DAL_Enabled()) { /* disable font layer(layer3) drawed in lk */ session_input->config[1].layer_id = primary_display_get_option("ASSERT_LAYER"); session_input->config[1].next_buff_idx = -1; session_input->config[1].layer_enable = 0; session_input->config_layer_num++; } ret = primary_display_config_input_multiple(session_input); ret = primary_display_trigger(true, NULL, 0); kfree(session_input); return ret; } /** * Set fb_info.fix fields and also updates fbdev. * When calling this fb_info.var must be set up already. */ static void set_fb_fix(struct mtkfb_device *fbdev) { struct fb_info *fbi = fbdev->fb_info; struct fb_fix_screeninfo *fix = &fbi->fix; struct fb_var_screeninfo *var = &fbi->var; struct fb_ops *fbops = fbi->fbops; strncpy(fix->id, MTKFB_DRIVER, sizeof(fix->id)); fix->type = FB_TYPE_PACKED_PIXELS; switch (var->bits_per_pixel) { case 16: case 24: case 32: fix->visual = FB_VISUAL_TRUECOLOR; break; case 1: case 2: case 4: case 8: fix->visual = FB_VISUAL_PSEUDOCOLOR; break; default: ASSERT(0); } fix->accel = FB_ACCEL_NONE; fix->line_length = ALIGN_TO(var->xres_virtual, MTK_FB_ALIGNMENT) * var->bits_per_pixel / 8; fix->smem_len = fbdev->fb_size_in_byte; fix->smem_start = fbdev->fb_pa_base; fix->xpanstep = 0; fix->ypanstep = 1; fbops->fb_fillrect = cfb_fillrect; fbops->fb_copyarea = cfb_copyarea; fbops->fb_imageblit = cfb_imageblit; } /** * Check values in var, try to adjust them in case of out of bound values if * possible, or return error. */ static int mtkfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) { unsigned int bpp; unsigned long max_frame_size; unsigned long line_size; struct mtkfb_device *fbdev = (struct mtkfb_device *)fbi->par; /* DISPFUNC(); */ DISPMSG("mtkfb_check_var, xres=%u, yres=%u, xres_virtual=%u, yres_virtual=%u,\n", var->xres, var->yres, var->xres_virtual, var->yres_virtual); DISPMSG("xoffset=%u, yoffset=%u, bits_per_pixel=%u\n", var->xoffset, var->yoffset, var->bits_per_pixel); bpp = var->bits_per_pixel; if (bpp != 16 && bpp != 24 && bpp != 32) { MTKFB_LOG("[%s]unsupported bpp: %d", __func__, bpp); return -1; } switch (var->rotate) { case 0: case 180: var->xres = MTK_FB_XRES; var->yres = MTK_FB_YRES; break; case 90: case 270: var->xres = MTK_FB_YRES; var->yres = MTK_FB_XRES; break; default: return -1; } if (var->xres_virtual < var->xres) var->xres_virtual = var->xres; if (var->yres_virtual < var->yres) var->yres_virtual = var->yres; max_frame_size = fbdev->fb_size_in_byte; DISPMSG("fbdev->fb_size_in_byte=0xlx\n", fbdev->fb_size_in_byte); line_size = var->xres_virtual * bpp / 8; if (line_size * var->yres_virtual > max_frame_size) { /* Try to keep yres_virtual first */ line_size = max_frame_size / var->yres_virtual; var->xres_virtual = line_size * 8 / bpp; if (var->xres_virtual < var->xres) { /* Still doesn't fit. Shrink yres_virtual too */ var->xres_virtual = var->xres; line_size = var->xres * bpp / 8; var->yres_virtual = max_frame_size / line_size; } } DISPMSG("mtkfb_check_var, xres=%u, yres=%u, xres_virtual=%u, yres_virtual=%u,\n", var->xres, var->yres, var->xres_virtual, var->yres_virtual); DISPMSG("xoffset=%u, yoffset=%u, bits_per_pixel=%u\n", var->xoffset, var->yoffset, var->bits_per_pixel); if (var->xres + var->xoffset > var->xres_virtual) var->xoffset = var->xres_virtual - var->xres; if (var->yres + var->yoffset > var->yres_virtual) var->yoffset = var->yres_virtual - var->yres; DISPMSG("mtkfb_check_var, xres=%u, yres=%u, xres_virtual=%u, yres_virtual=%u,\n", var->xres, var->yres, var->xres_virtual, var->yres_virtual); DISPMSG("xoffset=%u, yoffset=%u, bits_per_pixel=%u\n", var->xoffset, var->yoffset, var->bits_per_pixel); if (16 == bpp) { 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; } else if (24 == bpp) { var->red.length = var->green.length = var->blue.length = 8; var->transp.length = 0; /* Check if format is RGB565 or BGR565 */ ASSERT(8 == var->green.offset); ASSERT(16 == var->red.offset + var->blue.offset); ASSERT(16 == var->red.offset || 0 == var->red.offset); } else if (32 == bpp) { var->red.length = var->green.length = var->blue.length = var->transp.length = 8; /* Check if format is ARGB565 or ABGR565 */ ASSERT(8 == var->green.offset && 24 == var->transp.offset); ASSERT(16 == var->red.offset + var->blue.offset); ASSERT(16 == var->red.offset || 0 == var->red.offset); } var->red.msb_right = 0; var->green.msb_right = 0; var->blue.msb_right = 0; var->transp.msb_right = 0; if (var->activate & FB_ACTIVATE_NO_UPDATE) no_update = true; else no_update = false; var->activate = FB_ACTIVATE_NOW; var->height = UINT_MAX; var->width = UINT_MAX; var->grayscale = 0; var->nonstd = 0; var->pixclock = UINT_MAX; var->left_margin = UINT_MAX; var->right_margin = UINT_MAX; var->upper_margin = UINT_MAX; var->lower_margin = UINT_MAX; var->hsync_len = UINT_MAX; var->vsync_len = UINT_MAX; var->vmode = FB_VMODE_NONINTERLACED; var->sync = 0; MSG_FUNC_LEAVE(); return 0; } /* Switch to a new mode. The parameters for it has been check already by * mtkfb_check_var. */ static int mtkfb_set_par(struct fb_info *fbi) { struct fb_var_screeninfo *var = &fbi->var; struct mtkfb_device *fbdev = (struct mtkfb_device *)fbi->par; struct fb_overlay_layer fb_layer; u32 bpp = var->bits_per_pixel; disp_session_input_config *session_input; disp_input_config *input; /* DISPFUNC(); */ memset(&fb_layer, 0, sizeof(struct fb_overlay_layer)); switch (bpp) { case 16: fb_layer.src_fmt = MTK_FB_FORMAT_RGB565; fb_layer.src_use_color_key = 1; fb_layer.src_color_key = 0xFF000000; break; case 24: fb_layer.src_use_color_key = 1; fb_layer.src_fmt = (0 == var->blue.offset) ? MTK_FB_FORMAT_RGB888 : MTK_FB_FORMAT_BGR888; fb_layer.src_color_key = 0xFF000000; break; case 32: fb_layer.src_use_color_key = 0; DISPMSG("set_par,var->blue.offset=%d\n", var->blue.offset); fb_layer.src_fmt = (0 == var->blue.offset) ? MTK_FB_FORMAT_BGRA8888 : MTK_FB_FORMAT_RGBX8888; fb_layer.src_color_key = 0; break; default: fb_layer.src_fmt = MTK_FB_FORMAT_UNKNOWN; DISPERR("[%s]unsupported bpp: %d", __func__, bpp); return -1; } set_fb_fix(fbdev); fb_layer.layer_id = primary_display_get_option("FB_LAYER"); fb_layer.layer_enable = 1; fb_layer.src_base_addr = (void *)((unsigned long)fbdev->fb_va_base + var->yoffset * fbi->fix.line_length); DISPMSG("fb_pa=0xlx, var->yoffset=0xx,fbi->fix.line_length=0xx\n", fb_pa, var->yoffset, fbi->fix.line_length); fb_layer.src_phy_addr = (void *)(fb_pa + var->yoffset * fbi->fix.line_length); fb_layer.src_direct_link = 0; fb_layer.src_offset_x = fb_layer.src_offset_y = 0; fb_layer.src_pitch = ALIGN_TO(var->xres, MTK_FB_ALIGNMENT); fb_layer.src_width = fb_layer.tgt_width = var->xres; fb_layer.src_height = fb_layer.tgt_height = var->yres; fb_layer.tgt_offset_x = fb_layer.tgt_offset_y = 0; fb_layer.alpha = 0xff; /* fb_layer.src_color_key = 0; */ fb_layer.layer_rotation = MTK_FB_ORIENTATION_0; fb_layer.layer_type = LAYER_2D; DISPMSG("mtkfb_set_par, fb_layer.src_fmt=%x\n", fb_layer.src_fmt); session_input = kzalloc(sizeof(*session_input), GFP_KERNEL); if (!session_input) goto out; session_input->config_layer_num = 0; if (!isAEEEnabled) { /* DISPCHECK("AEE is not enabled, will disable layer 3\n"); */ input = &session_input->config[session_input->config_layer_num++]; input->layer_id = primary_display_get_option("ASSERT_LAYER"); input->layer_enable = 0; } else { DISPMSG("AEE is enabled, should not disable layer 3\n"); } input = &session_input->config[session_input->config_layer_num++]; _convert_fb_layer_to_disp_input(&fb_layer, input); primary_display_config_input_multiple(session_input); kfree(session_input); out: /* backup fb_layer information. */ memcpy(&fb_layer_context, &fb_layer, sizeof(fb_layer)); MSG_FUNC_LEAVE(); return 0; } static int mtkfb_soft_cursor(struct fb_info *info, struct fb_cursor *cursor) { /* NOT_REFERENCED(info); */ /* NOT_REFERENCED(cursor); */ return 0; } static int mtkfb_get_overlay_layer_info(struct fb_overlay_layer_info *layerInfo) { return 0; } void mtkfb_dump_layer_info(void) { } static disp_session_input_config session_input; static int mtkfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; DISP_STATUS ret = 0; int r = 0; DISPFUNC(); DISPMSG("mtkfb_ioctl, info=%p, cmd nr=0xx, cmd size=0xx\n", info, (unsigned int)_IOC_NR(cmd), (unsigned int)_IOC_SIZE(cmd)); switch (cmd) { case MTKFB_GET_FRAMEBUFFER_MVA: return copy_to_user(argp, &fb_pa, sizeof(fb_pa)) ? -EFAULT : 0; /* remain this for engineer mode dfo multiple resolution */ case MTKFB_GET_DISPLAY_IF_INFORMATION: { int displayid = 0; if (copy_from_user(&displayid, (void __user *)arg, sizeof(displayid))) { MTKFB_LOG("[FB]: copy_from_user failed! line:%d\n", __LINE__); return -EFAULT; } if (displayid > MTKFB_MAX_DISPLAY_COUNT) { DISPERR("[FB]: invalid display id:%d\n", displayid); return -EFAULT; } if (displayid == 0) { dispif_info[displayid].displayWidth = primary_display_get_width(); dispif_info[displayid].displayHeight = primary_display_get_height(); dispif_info[displayid].lcmOriginalWidth = primary_display_get_original_width(); dispif_info[displayid].lcmOriginalHeight = primary_display_get_original_height(); dispif_info[displayid].displayMode = primary_display_is_video_mode() ? 0 : 1; } else { DISPERR("information for displayid: %d is not available now\n", displayid); } if (copy_to_user((void __user *)arg, &(dispif_info[displayid]), sizeof(mtk_dispif_info_t))) { MTKFB_LOG("[FB]: copy_to_user failed! line:%d\n", __LINE__); r = -EFAULT; } return r; } case MTKFB_POWEROFF: { MTKFB_FUNC(); if (primary_display_is_sleepd()) { PRNWARN("[FB Driver] Still in MTKFB_POWEROFF!!!\n"); return r; } PRNWARN("[FB Driver] enter MTKFB_POWEROFF\n"); ret = primary_display_suspend(); if (ret < 0) DISPERR("primary display suspend failed\n"); PRNWARN("[FB Driver] leave MTKFB_POWEROFF\n"); is_early_suspended = true; /* no care */ return r; } case MTKFB_POWERON: { MTKFB_FUNC(); if (primary_display_is_alive()) { DISPMSG("[FB Driver] Still in MTKFB_POWERON!!!\n"); return r; } PRNWARN("[FB Driver] enter MTKFB_POWERON\n"); primary_display_resume(); PRNWARN("[FB Driver] leave MTKFB_POWERON\n"); is_early_suspended = false; /* no care */ return r; } case MTKFB_GET_POWERSTATE: { int power_state; if (primary_display_is_sleepd()) power_state = 0; else power_state = 1; if (copy_to_user(argp, &power_state, sizeof(power_state))) { DISPERR("[FB]: MTKFB_GET_POWERSTATE failed!\n"); return -EFAULT; } return 0; } case MTKFB_CONFIG_IMMEDIATE_UPDATE: { MTKFB_LOG("[%s] MTKFB_CONFIG_IMMEDIATE_UPDATE, enable = %lu\n", __func__, arg); if (down_interruptible(&sem_early_suspend)) { MTKFB_LOG("[mtkfb_ioctl] can't get semaphore:%d\n", __LINE__); return -ERESTARTSYS; } sem_early_suspend_cnt--; /* DISP_WaitForLCDNotBusy(); */ /* ret = DISP_ConfigImmediateUpdate((BOOL)arg); */ /* sem_early_suspend_cnt++; */ up(&sem_early_suspend); return r; } case MTKFB_CAPTURE_FRAMEBUFFER: { unsigned long dst_pbuf = 0; unsigned long *src_pbuf = 0; unsigned int pixel_bpp = info->var.bits_per_pixel / 8; unsigned int fbsize = DISP_GetScreenHeight() * DISP_GetScreenWidth() * pixel_bpp; if (copy_from_user(&dst_pbuf, (void __user *)arg, sizeof(dst_pbuf))) { DISPERR("[FB]: copy_from_user failed! line:%d\n", __LINE__); r = -EFAULT; } else { src_pbuf = vmalloc(fbsize); if (!src_pbuf) { DISPERR("[FB]: vmalloc capture src_pbuf failed! line:%d\n", __LINE__); r = -EFAULT; } else { dprec_logger_start(DPREC_LOGGER_WDMA_DUMP, 0, 0); primary_display_capture_framebuffer_ovl((unsigned long)src_pbuf, MTK_FB_FORMAT_BGRA8888); dprec_logger_done(DPREC_LOGGER_WDMA_DUMP, 0, 0); if (copy_to_user((unsigned long *)dst_pbuf, src_pbuf, fbsize)) { DISPERR("[FB]: copy_to_user failed! line:%d\n", __LINE__); r = -EFAULT; } vfree(src_pbuf); } } return r; } case MTKFB_SLT_AUTO_CAPTURE: { struct fb_slt_catpure capConfig; char *dst_buffer; unsigned int fb_size; DISPMSG("MTKFB_SLT_AUTO_CAPTURE\n"); if (copy_from_user(&capConfig, (void __user *)arg, sizeof(capConfig))) { MTKFB_LOG("[FB]: copy_from_user failed! line:%d\n", __LINE__); r = -EFAULT; } else { dst_buffer = (char *)capConfig.outputBuffer; fb_size = DISP_GetScreenWidth() * DISP_GetScreenHeight() * 4; if (!capConfig.outputBuffer) { DISPERR("[FB]: vmalloc capture outputBuffer failed! line:%d\n", __LINE__); r = -EFAULT; } else { capConfig.outputBuffer = vmalloc(fb_size); primary_display_capture_framebuffer_ovl((unsigned long)capConfig.outputBuffer, capConfig.format); if (copy_to_user(dst_buffer, (char *)capConfig.outputBuffer, fb_size)) { DISPERR("[FB]: copy_to_user failed! line:%d\n", __LINE__); r = -EFAULT; } vfree((char *)capConfig.outputBuffer); } } return r; } case MTKFB_GET_OVERLAY_LAYER_INFO: { struct fb_overlay_layer_info layerInfo; MTKFB_LOG(" mtkfb_ioctl():MTKFB_GET_OVERLAY_LAYER_INFO\n"); if (copy_from_user(&layerInfo, (void __user *)arg, sizeof(layerInfo))) { MTKFB_LOG("[FB]: copy_from_user failed! line:%d\n", __LINE__); return -EFAULT; } if (mtkfb_get_overlay_layer_info(&layerInfo) < 0) { MTKFB_LOG("[FB]: Failed to get overlay layer info\n"); return -EFAULT; } if (copy_to_user((void __user *)arg, &layerInfo, sizeof(layerInfo))) { MTKFB_LOG("[FB]: copy_to_user failed! line:%d\n", __LINE__); r = -EFAULT; } return r; } case MTKFB_SET_OVERLAY_LAYER: { struct fb_overlay_layer *layerInfo; layerInfo = kmalloc(sizeof(*layerInfo), GFP_KERNEL); if (!layerInfo) return -ENOMEM; if (copy_from_user(layerInfo, (void __user *)arg, sizeof(*layerInfo))) { MTKFB_LOG("[FB]: copy_from_user failed! line:%d\n", __LINE__); r = -EFAULT; } else { disp_input_config *input; /* in early suspend mode ,will not update buffer index, info SF by return value */ if (primary_display_is_sleepd()) { DISPMSG ("[FB] error, set overlay in early suspend ,skip!\n"); kfree(layerInfo); return MTKFB_ERROR_IS_EARLY_SUSPEND; } memset((void *)&session_input, 0, sizeof(session_input)); if (layerInfo->layer_id >= TOTAL_OVL_LAYER_NUM) { DISPERR("MTKFB_SET_OVERLAY_LAYER, layer_id invalid=%d\n", layerInfo->layer_id); } else { input = &session_input.config[session_input.config_layer_num++]; _convert_fb_layer_to_disp_input(layerInfo, input); } primary_display_config_input_multiple(&session_input); primary_display_trigger(1, NULL, 0); } kfree(layerInfo); return r; } case MTKFB_ERROR_INDEX_UPDATE_TIMEOUT: { DISPMSG("[DDP] mtkfb_ioctl():MTKFB_ERROR_INDEX_UPDATE_TIMEOUT\n"); /* call info dump function here */ /* mtkfb_dump_layer_info(); */ return r; } case MTKFB_ERROR_INDEX_UPDATE_TIMEOUT_AEE: { DISPMSG("[DDP] mtkfb_ioctl():MTKFB_ERROR_INDEX_UPDATE_TIMEOUT\n"); return r; } case MTKFB_SET_VIDEO_LAYERS: { struct mmp_fb_overlay_layers { struct fb_overlay_layer Layer0; struct fb_overlay_layer Layer1; struct fb_overlay_layer Layer2; struct fb_overlay_layer Layer3; }; struct fb_overlay_layer *layerInfo; int layerInfo_size = sizeof(struct fb_overlay_layer) * VIDEO_LAYER_COUNT; MTKFB_LOG(" mtkfb_ioctl():MTKFB_SET_VIDEO_LAYERS\n"); layerInfo = kmalloc(layerInfo_size, GFP_KERNEL); if (!layerInfo) return -ENOMEM; if (copy_from_user(layerInfo, (void __user *)arg, layerInfo_size)) { MTKFB_LOG("[FB]: copy_from_user failed! line:%d\n", __LINE__); r = -EFAULT; } else { int32_t i; disp_input_config *input; memset((void *)&session_input, 0, sizeof(session_input)); for (i = 0; i < VIDEO_LAYER_COUNT; ++i) { if (layerInfo[i].layer_id >= TOTAL_OVL_LAYER_NUM) { DISPERR ("MTKFB_SET_VIDEO_LAYERS, layer_id invalid=%d\n", layerInfo[i].layer_id); continue; } input = &session_input.config[session_input.config_layer_num++]; _convert_fb_layer_to_disp_input(&layerInfo[i], input); } primary_display_config_input_multiple(&session_input); primary_display_trigger(1, NULL, 0); } kfree(layerInfo); return r; } case MTKFB_TRIG_OVERLAY_OUT: { MTKFB_LOG(" mtkfb_ioctl():MTKFB_TRIG_OVERLAY_OUT\n"); primary_display_trigger(1, NULL, 0); return 0; } case MTKFB_META_RESTORE_SCREEN: { struct fb_var_screeninfo var; if (copy_from_user(&var, argp, sizeof(var))) return -EFAULT; info->var.yoffset = var.yoffset; init_framebuffer(info); return mtkfb_pan_display_impl(&var, info); } case MTKFB_GET_DEFAULT_UPDATESPEED: { unsigned int speed; MTKFB_LOG("[MTKFB] get default update speed\n"); /* DISP_Get_Default_UpdateSpeed(&speed); */ DISPMSG("[MTKFB EM]MTKFB_GET_DEFAULT_UPDATESPEED is %d\n", speed); return copy_to_user(argp, &speed, sizeof(speed)) ? -EFAULT : 0; } case MTKFB_GET_CURR_UPDATESPEED: { unsigned int speed; MTKFB_LOG("[MTKFB] get current update speed\n"); /* DISP_Get_Current_UpdateSpeed(&speed); */ DISPMSG("[MTKFB EM]MTKFB_GET_CURR_UPDATESPEED is %d\n", speed); return copy_to_user(argp, &speed, sizeof(speed)) ? -EFAULT : 0; } case MTKFB_CHANGE_UPDATESPEED: { unsigned int speed; MTKFB_LOG("[MTKFB] change update speed\n"); if (copy_from_user(&speed, (void __user *)arg, sizeof(speed))) { MTKFB_LOG("[FB]: copy_from_user failed! line:%d\n", __LINE__); r = -EFAULT; } else { /* DISP_Change_Update(speed); */ DISPMSG("[MTKFB EM]MTKFB_CHANGE_UPDATESPEED is %d\n", speed); } return r; } case MTKFB_AEE_LAYER_EXIST: { /* pr_debug("[MTKFB] isAEEEnabled=%d\n", isAEEEnabled); */ return copy_to_user(argp, &isAEEEnabled, sizeof(isAEEEnabled)) ? -EFAULT : 0; } case MTKFB_LOCK_FRONT_BUFFER: return 0; case MTKFB_UNLOCK_FRONT_BUFFER: return 0; case MTKFB_FACTORY_AUTO_TEST: { unsigned int result = 0; DISPMSG("factory mode: lcm auto test\n"); result = mtkfb_fm_auto_test(); return copy_to_user(argp, &result, sizeof(result)) ? -EFAULT : 0; } case MTKFB_META_SHOW_BOOTLOGO: { struct mtkfb_device *fbdev = (struct mtkfb_device *)mtkfb_fbi->par; int i; disp_input_config *input; DISPMSG("MTKFB_META_SHOW_BOOTLOGO\n"); memset((void *)&session_input, 0, sizeof(session_input)); for (i = 0; i < 2; i++) { input = &session_input.config[session_input.config_layer_num++]; input->layer_enable = 1; input->src_fmt = DISP_FORMAT_RGBA8888; input->src_offset_x = 0; input->src_offset_y = 0; input->src_width = MTK_FB_XRES; input->src_height = MTK_FB_YRES; input->tgt_offset_x = 0; input->tgt_offset_y = 0; input->tgt_width = MTK_FB_XRES; input->tgt_height = MTK_FB_YRES; input->src_pitch = ALIGN_TO(MTK_FB_XRES, MTK_FB_ALIGNMENT) * 4; input->alpha_enable = 1; input->alpha = 0xff; input->next_buff_idx = -1; } input = &session_input.config[0]; input->layer_id = 0; input->src_phy_addr = (void *)(fbdev->fb_pa_base); input = &session_input.config[1]; input->layer_id = 3; input->src_phy_addr = (void *)(fbdev->fb_pa_base + (ALIGN_TO(MTK_FB_XRES, MTK_FB_ALIGNMENT) * ALIGN_TO(MTK_FB_YRES, MTK_FB_ALIGNMENT) * 4)); primary_display_config_input_multiple(&session_input); primary_display_trigger(1, NULL, 0); return 0; } default: DISPMSG("mtkfb_ioctl Not support, info=%p, cmd=0xx, arg=0x%lx\n", info, (unsigned int)cmd, arg); return -EINVAL; } } #ifdef CONFIG_COMPAT static void compat_convert(struct compat_fb_overlay_layer *compat_info, struct fb_overlay_layer *info) { info->layer_id = compat_info->layer_id; info->layer_enable = compat_info->layer_enable; info->src_base_addr = (void *)((unsigned long)compat_info->src_base_addr); info->src_phy_addr = (void *)((unsigned long)compat_info->src_phy_addr); info->src_direct_link = compat_info->src_direct_link; info->src_fmt = compat_info->src_fmt; info->src_use_color_key = compat_info->src_use_color_key; info->src_color_key = compat_info->src_color_key; info->src_pitch = compat_info->src_pitch; info->src_offset_x = compat_info->src_offset_x; info->src_offset_y = compat_info->src_offset_y; info->src_width = compat_info->src_width; info->src_height = compat_info->src_height; info->tgt_offset_x = compat_info->tgt_offset_x; info->tgt_offset_y = compat_info->tgt_offset_y; info->tgt_width = compat_info->tgt_width; info->tgt_height = compat_info->tgt_height; info->layer_rotation = compat_info->layer_rotation; info->layer_type = compat_info->layer_type; info->video_rotation = compat_info->video_rotation; info->isTdshp = compat_info->isTdshp; info->next_buff_idx = compat_info->next_buff_idx; info->identity = compat_info->identity; info->connected_type = compat_info->connected_type; info->security = compat_info->security; info->alpha_enable = compat_info->alpha_enable; info->alpha = compat_info->alpha; info->fence_fd = compat_info->fence_fd; info->ion_fd = compat_info->ion_fd; } static int mtkfb_compat_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct fb_overlay_layer layerInfo; long ret = 0; pr_debug("[FB Driver] mtkfb_compat_ioctl, cmd=0xx, cmd nr=0xx, cmd size=0xx\n", cmd, (unsigned int)_IOC_NR(cmd), (unsigned int)_IOC_SIZE(cmd)); switch (cmd) { case COMPAT_MTKFB_GET_FRAMEBUFFER_MVA: { compat_uint_t __user *data32; __u32 data; data32 = compat_ptr(arg); data = (__u32) fb_pa; if (put_user(data, data32)) { pr_err("MTKFB_FRAMEBUFFER_MVA failed\n"); ret = -EFAULT; } pr_debug("MTKFB_FRAMEBUFFER_MVA success 0x%lx\n", fb_pa); return ret; } case COMPAT_MTKFB_GET_DISPLAY_IF_INFORMATION: { compat_uint_t __user *data32; compat_uint_t displayid = 0; data32 = compat_ptr(arg); if (get_user(displayid, data32)) { pr_err("COMPAT_MTKFB_GET_DISPLAY_IF_INFORMATION failed\n"); return -EFAULT; } if (displayid > MTKFB_MAX_DISPLAY_COUNT) { pr_err("[FB]: invalid display id:%d\n", displayid); return -EFAULT; } if (displayid == 0) { dispif_info[displayid].displayWidth = primary_display_get_width(); dispif_info[displayid].displayHeight = primary_display_get_height(); dispif_info[displayid].lcmOriginalWidth = primary_display_get_original_width(); dispif_info[displayid].lcmOriginalHeight = primary_display_get_original_height(); dispif_info[displayid].displayMode = primary_display_is_video_mode() ? 0 : 1; } else { DISPERR("information for displayid: %d is not available now\n", displayid); } if (copy_to_user((void __user *)arg, &(dispif_info[displayid]), sizeof(compat_mtk_dispif_info_t))) { pr_err("[FB]: copy_to_user failed! line:%d\n", __LINE__); return -EFAULT; } break; } case COMPAT_MTKFB_POWEROFF: { ret = mtkfb_ioctl(info, MTKFB_POWEROFF, arg); break; } case COMPAT_MTKFB_POWERON: { ret = mtkfb_ioctl(info, MTKFB_POWERON, arg); break; } case COMPAT_MTKFB_GET_POWERSTATE: { compat_uint_t __user *data32; int power_state = 0; data32 = compat_ptr(arg); if (primary_display_is_sleepd()) power_state = 0; else power_state = 1; if (put_user(power_state, data32)) { pr_err("MTKFB_GET_POWERSTATE failed\n"); ret = -EFAULT; } pr_debug("MTKFB_GET_POWERSTATE success %d\n", power_state); break; } case COMPAT_MTKFB_CAPTURE_FRAMEBUFFER: { compat_ulong_t __user *data32; unsigned long *pbuf; unsigned int pixel_bpp = info->var.bits_per_pixel / 8; unsigned int fbsize = DISP_GetScreenHeight() * DISP_GetScreenWidth() * pixel_bpp; unsigned long dest; data32 = compat_ptr(arg); pbuf = compat_alloc_user_space(fbsize); if (!pbuf) { DISPERR("[FB]: vmalloc capture src_pbuf failed! line:%d\n", __LINE__); ret = -EFAULT; } else { dprec_logger_start(DPREC_LOGGER_WDMA_DUMP, 0, 0); primary_display_capture_framebuffer_ovl((unsigned long)pbuf, MTK_FB_FORMAT_BGRA8888); dprec_logger_done(DPREC_LOGGER_WDMA_DUMP, 0, 0); ret = get_user(dest, data32); if (copy_in_user((unsigned long *)dest, pbuf, fbsize/2)) { DISPERR("[FB]: copy_to_user failed! line:%d\n", __LINE__); ret = -EFAULT; } } break; } case COMPAT_MTKFB_TRIG_OVERLAY_OUT: { arg = (unsigned long)compat_ptr(arg); ret = mtkfb_ioctl(info, MTKFB_TRIG_OVERLAY_OUT, arg); break; } case COMPAT_MTKFB_META_RESTORE_SCREEN: { arg = (unsigned long)compat_ptr(arg); ret = mtkfb_ioctl(info, MTKFB_META_RESTORE_SCREEN, arg); break; } case COMPAT_MTKFB_SET_OVERLAY_LAYER: { struct compat_fb_overlay_layer *compat_layerInfo; compat_layerInfo = kmalloc(sizeof(*compat_layerInfo), GFP_KERNEL); if (!compat_layerInfo) return -ENOMEM; MTKFB_LOG(" mtkfb_compat_ioctl():MTKFB_SET_OVERLAY_LAYER\n"); arg = (unsigned long)compat_ptr(arg); if (copy_from_user(compat_layerInfo, (void __user *)arg, sizeof(*compat_layerInfo))) { MTKFB_LOG("[FB Driver]: copy_from_user failed! line:%d\n", __LINE__); ret = -EFAULT; } else { disp_input_config *input; compat_convert(compat_layerInfo, &layerInfo); /* in early suspend mode ,will not update buffer index, info SF by return value */ if (primary_display_is_sleepd()) { pr_debug("[FB Driver] error, set overlay in early suspend ,skip!\n"); kfree(compat_layerInfo); return MTKFB_ERROR_IS_EARLY_SUSPEND; } memset((void *)&session_input, 0, sizeof(session_input)); if (layerInfo.layer_id >= TOTAL_OVL_LAYER_NUM) { DISPERR ("COMPAT_MTKFB_SET_OVERLAY_LAYER, layer_id invalid=%d\n", layerInfo.layer_id); } else { input = &session_input.config[session_input.config_layer_num++]; _convert_fb_layer_to_disp_input(&layerInfo, input); } primary_display_config_input_multiple(&session_input); /* primary_display_trigger(1, NULL, 0); */ } kfree(compat_layerInfo); break; } case COMPAT_MTKFB_SET_VIDEO_LAYERS: { struct compat_fb_overlay_layer *compat_layerInfo; int compat_layerInfo_size = sizeof(struct compat_fb_overlay_layer) * VIDEO_LAYER_COUNT; compat_layerInfo = kmalloc(compat_layerInfo_size, GFP_KERNEL); if (!compat_layerInfo) return -ENOMEM; MTKFB_LOG(" mtkfb_compat_ioctl():MTKFB_SET_VIDEO_LAYERS\n"); if (copy_from_user(compat_layerInfo, (void __user *)arg, compat_layerInfo_size)) { MTKFB_LOG("[FB Driver]: copy_from_user failed! line:%d\n", __LINE__); ret = -EFAULT; } else { int32_t i; /* mutex_lock(&OverlaySettingMutex); */ disp_input_config *input; memset((void *)&session_input, 0, sizeof(session_input)); for (i = 0; i < VIDEO_LAYER_COUNT; ++i) { compat_convert(&compat_layerInfo[i], &layerInfo); if (layerInfo.layer_id >= TOTAL_OVL_LAYER_NUM) { DISPERR ("COMPAT_MTKFB_SET_VIDEO_LAYERS, layer_id invalid=%d\n", layerInfo.layer_id); continue; } input = &session_input.config[session_input.config_layer_num++]; _convert_fb_layer_to_disp_input(&layerInfo, input); } /* is_ipoh_bootup = false; */ /* atomic_set(&OverlaySettingDirtyFlag, 1); */ /* atomic_set(&OverlaySettingApplied, 0); */ /* mutex_unlock(&OverlaySettingMutex); */ /* MMProfileLogStructure(MTKFB_MMP_Events.SetOverlayLayers, MMProfileFlagEnd, layerInfo, struct mmp_fb_overlay_layers); */ primary_display_config_input_multiple(&session_input); /* primary_display_trigger(1, NULL, 0); */ } kfree(compat_layerInfo); break; } case COMPAT_MTKFB_AEE_LAYER_EXIST: { int dal_en = is_DAL_Enabled(); compat_ulong_t __user *data32; data32 = compat_ptr(arg); if (put_user(dal_en, data32)) { pr_err("MTKFB_GET_POWERSTATE failed\n"); ret = -EFAULT; } break; } case COMPAT_MTKFB_FACTORY_AUTO_TEST: { unsigned long result = 0; compat_ulong_t __user *data32; DISPMSG("factory mode: lcm auto test\n"); result = mtkfb_fm_auto_test(); data32 = compat_ptr(arg); if (put_user(result, data32)) { pr_err("MTKFB_GET_POWERSTATE failed\n"); ret = -EFAULT; } break; /*return copy_to_user(argp, &result, sizeof(result)) ? -EFAULT : 0;*/ } case COMPAT_MTKFB_META_SHOW_BOOTLOGO: { arg = (unsigned long)compat_ptr(arg); ret = mtkfb_ioctl(info, MTKFB_META_SHOW_BOOTLOGO, arg); break; } default: /* NOTHING DIFFERENCE with standard ioctl calling */ arg = (unsigned long)compat_ptr(arg); ret = mtkfb_ioctl(info, cmd, arg); break; } return ret; } #endif static int mtkfb_pan_display_proxy(struct fb_var_screeninfo *var, struct fb_info *info) { #ifdef CONFIG_MTPROF_APPLAUNCH /* eng enable, user disable */ pr_debug("AppLaunch " "mtkfb_pan_display_proxy.\n"); #endif return mtkfb_pan_display_impl(var, info); } static void mtkfb_blank_suspend(void); static void mtkfb_blank_resume(void); #if defined(CONFIG_PM_AUTOSLEEP) static int mtkfb_blank(int blank_mode, struct fb_info *info) { switch (blank_mode) { case FB_BLANK_UNBLANK: case FB_BLANK_NORMAL: mtkfb_blank_resume(); case FB_BLANK_VSYNC_SUSPEND: case FB_BLANK_HSYNC_SUSPEND: break; case FB_BLANK_POWERDOWN: mtkfb_blank_suspend(); break; default: return -EINVAL; } return 0; } #endif /* Callback table for the frame buffer framework. Some of these pointers * will be changed according to the current setting of fb_info->accel_flags. */ static struct fb_ops mtkfb_ops = { .owner = THIS_MODULE, .fb_open = mtkfb_open, .fb_release = mtkfb_release, .fb_setcolreg = mtkfb_setcolreg, .fb_pan_display = mtkfb_pan_display_proxy, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, .fb_cursor = mtkfb_soft_cursor, .fb_check_var = mtkfb_check_var, .fb_set_par = mtkfb_set_par, .fb_ioctl = mtkfb_ioctl, #ifdef CONFIG_COMPAT .fb_compat_ioctl = mtkfb_compat_ioctl, #endif #if defined(CONFIG_PM_AUTOSLEEP) .fb_blank = mtkfb_blank, #endif }; /** * --------------------------------------------------------------------------- * Sysfs interface * --------------------------------------------------------------------------- */ static int mtkfb_register_sysfs(struct mtkfb_device *fbdev) { /* NOT_REFERENCED(fbdev); */ return 0; } static void mtkfb_unregister_sysfs(struct mtkfb_device *fbdev) { /* NOT_REFERENCED(fbdev); */ } /** * --------------------------------------------------------------------------- * LDM callbacks * --------------------------------------------------------------------------- */ /* Initialize system fb_info object and set the default video mode. * The frame buffer memory already allocated by lcddma_init */ static int mtkfb_fbinfo_init(struct fb_info *info) { struct mtkfb_device *fbdev = (struct mtkfb_device *)info->par; struct fb_var_screeninfo var; int r = 0; /*DISPFUNC(); */ BUG_ON(!fbdev->fb_va_base); info->fbops = &mtkfb_ops; info->flags = FBINFO_FLAG_DEFAULT; info->screen_base = (char *)fbdev->fb_va_base; info->screen_size = fbdev->fb_size_in_byte; info->pseudo_palette = fbdev->pseudo_palette; r = fb_alloc_cmap(&info->cmap, 32, 0); if (r != 0) DISPERR("unable to allocate color map memory\n"); /* setup the initial video mode (RGB565) */ memset(&var, 0, sizeof(var)); var.xres = MTK_FB_XRES; var.yres = MTK_FB_YRES; var.xres_virtual = MTK_FB_XRESV; var.yres_virtual = MTK_FB_YRESV; DISPMSG("FB_XRES=%d, FB_YRES=%d, FB_XRES_V=%d, FB_YRES_V=%d, BPP=%d, FB_PAGES=%d, FB_LINE=%d, FB_SIZEV=%d\n", MTK_FB_XRES, MTK_FB_YRES, MTK_FB_XRESV, MTK_FB_YRESV, MTK_FB_BPP, MTK_FB_PAGES, MTK_FB_LINE, MTK_FB_SIZEV); /* use 32 bit framebuffer as default */ var.bits_per_pixel = 32; var.transp.offset = 24; var.red.length = 8; #if 0 var.red.offset = 16; var.red.length = 8; var.green.offset = 8; var.green.length = 8; var.blue.offset = 0; var.blue.length = 8; #else var.red.offset = 0; var.red.length = 8; var.green.offset = 8; var.green.length = 8; var.blue.offset = 16; var.blue.length = 8; #endif var.width = DISP_GetActiveWidth(); var.height = DISP_GetActiveHeight(); var.activate = FB_ACTIVATE_NOW; r = mtkfb_check_var(&var, info); if (r != 0) DISPERR("failed to mtkfb_check_var\n"); info->var = var; r = mtkfb_set_par(info); if (r != 0) DISPERR("failed to mtkfb_set_par\n"); MSG_FUNC_LEAVE(); return r; } /* Release the fb_info object */ static void mtkfb_fbinfo_cleanup(struct mtkfb_device *fbdev) { MSG_FUNC_ENTER(); fb_dealloc_cmap(&fbdev->fb_info->cmap); MSG_FUNC_LEAVE(); } /* fast memset for hw test tool */ void DISP_memset_io(volatile void __iomem *dst, int c, size_t count) { u32 qc = (u8)c; qc |= qc << 8; qc |= qc << 16; while (count && !IS_ALIGNED((unsigned long)dst, 8)) { __raw_writeb(c, dst); dst++; count--; } while (count >= 4) { __raw_writel(qc, dst); dst += 4; count -= 4; } while (count) { __raw_writeb(c, dst); dst++; count--; } } /* Init frame buffer content as 3 R/G/B color bars for debug */ static int init_framebuffer(struct fb_info *info) { void *buffer = info->screen_base + info->var.yoffset * info->fix.line_length; /* clean whole frame buffer as black */ int size = info->var.xres_virtual * info->var.yres * info->var.bits_per_pixel/8; DISP_memset_io(buffer, 0, size); return 0; } /** * Free driver resources. Can be called to rollback an aborted initialization * sequence. */ static void mtkfb_free_resources(struct mtkfb_device *fbdev, int state) { int r = 0; switch (state) { case MTKFB_ACTIVE: r = unregister_framebuffer(fbdev->fb_info); ASSERT(0 == r); /* lint -fallthrough */ case 5: mtkfb_unregister_sysfs(fbdev); /* lint -fallthrough */ case 4: mtkfb_fbinfo_cleanup(fbdev); /* lint -fallthrough */ case 3: /* DISP_CHECK_RET(DISP_Deinit()); */ /* lint -fallthrough */ case 2: #ifndef CONFIG_FPGA_EARLY_PORTING dma_free_coherent(0, fbdev->fb_size_in_byte, fbdev->fb_va_base, fbdev->fb_pa_base); #endif /* lint -fallthrough */ case 1: dev_set_drvdata(fbdev->dev, NULL); framebuffer_release(fbdev->fb_info); /* lint -fallthrough */ case 0: /* nothing to free */ break; default: BUG(); } } void disp_get_fb_address(unsigned long *fbVirAddr, unsigned long *fbPhysAddr) { struct mtkfb_device *fbdev = (struct mtkfb_device *)mtkfb_fbi->par; *fbVirAddr = (unsigned long)fbdev->fb_va_base + mtkfb_fbi->var.yoffset * mtkfb_fbi->fix.line_length; *fbPhysAddr = (unsigned long)fbdev->fb_pa_base + mtkfb_fbi->var.yoffset * mtkfb_fbi->fix.line_length; } #ifdef CONFIG_OF struct tag_videolfb { u64 fb_base; u32 islcmfound; u32 fps; u32 vram; char lcmname[1]; /* this is the minimum size */ }; unsigned int islcmconnected = 0; unsigned int is_lcm_inited = 0; unsigned int vramsize = 0; phys_addr_t fb_base = 0; static int is_videofb_parse_done; static int fb_early_init_dt_get_chosen(unsigned long node, const char *uname, int depth, void *data) { if (depth != 1 || (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0)) return 0; *(unsigned long *)data = node; return 1; } static int __parse_tag_videolfb_extra(unsigned long node) { void *prop; unsigned long size = 0; u32 fb_base_h, fb_base_l; prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-fb_base_h", NULL); if (!prop) return -1; fb_base_h = of_read_number(prop, 1); prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-fb_base_l", NULL); if (!prop) return -1; fb_base_l = of_read_number(prop, 1); fb_base = ((u64) fb_base_h << 32) | (u64) fb_base_l; prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-islcmfound", NULL); if (!prop) return -1; islcmconnected = of_read_number(prop, 1); prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-islcm_inited", NULL); if (!prop) is_lcm_inited = 1; else is_lcm_inited = of_read_number(prop, 1); prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-fps", NULL); if (!prop) return -1; lcd_fps = of_read_number(prop, 1); if (0 == lcd_fps) lcd_fps = 6000; prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-vramSize", NULL); if (!prop) return -1; vramsize = of_read_number(prop, 1); prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-fb_base_l", NULL); if (!prop) return -1; fb_base_l = of_read_number(prop, 1); prop = (void *)of_get_flat_dt_prop(node, "atag,videolfb-lcmname", (int *)&size); if (!prop) return -1; if (size >= sizeof(mtkfb_lcm_name)) { DISPMSG("%s: error to get lcmname size=%ld\n", __func__, size); return -1; } memset((void *)mtkfb_lcm_name, 0, sizeof(mtkfb_lcm_name)); strncpy((char *)mtkfb_lcm_name, prop, sizeof(mtkfb_lcm_name)); mtkfb_lcm_name[size] = '\0'; pr_debug("__parse_tag_videolfb_extra done\n"); return 0; } static int __parse_tag_videolfb(unsigned long node) { struct tag_videolfb *videolfb_tag = NULL; unsigned long size = 0; videolfb_tag = (struct tag_videolfb *)of_get_flat_dt_prop(node, "atag,videolfb", (int *)&size); if (videolfb_tag) { memset((void *)mtkfb_lcm_name, 0, sizeof(mtkfb_lcm_name)); strcpy((char *)mtkfb_lcm_name, videolfb_tag->lcmname); mtkfb_lcm_name[strlen(videolfb_tag->lcmname)] = '\0'; lcd_fps = videolfb_tag->fps; if (0 == lcd_fps) lcd_fps = 6000; islcmconnected = videolfb_tag->islcmfound; vramsize = videolfb_tag->vram; fb_base = videolfb_tag->fb_base; is_lcm_inited = 1; return 0; } DISPMSG("[DT][videolfb] videolfb_tag not found\n"); return -1; } /* Retrun value: 0: success, 1: fail */ int _parse_tag_videolfb(void) { int ret; unsigned long node = 0; if (is_videofb_parse_done) return 0; #ifdef MTK_NO_DISP_IN_LK DISPMSG("[DT][videolfb] zaikuo, workaround for LK not ready\n"); /* after LK ready, remove this code */ return 1; #endif if (of_scan_flat_dt(fb_early_init_dt_get_chosen, &node) > 0) { ret = __parse_tag_videolfb(node); if (ret) __parse_tag_videolfb_extra(node); if (!ret) { is_videofb_parse_done = 1; DISPMSG("[DT][videolfb] lcmfound=%d, fps=%d, fb_base=%p, vram=%d, lcmname=%s\n", islcmconnected, lcd_fps, (void *)fb_base, vramsize, mtkfb_lcm_name); return 0; } DISPMSG("[DT][videolfb] videolfb_tag not found\n"); return 1; } DISPMSG("[DT][videolfb] of_chosen not found\n"); return 1; } phys_addr_t mtkfb_get_fb_base(void) { _parse_tag_videolfb(); return fb_base; } EXPORT_SYMBOL(mtkfb_get_fb_base); size_t mtkfb_get_fb_size(void) { _parse_tag_videolfb(); return vramsize; } EXPORT_SYMBOL(mtkfb_get_fb_size); #endif char *mtkfb_find_lcm_driver(void) { #ifdef CONFIG_OF if (1 == _parse_tag_videolfb()) { DISPMSG("[mtkfb] not found LCM driver, return NULL\n"); return NULL; } #else { char *p, *q; p = strstr(saved_command_line, "lcm="); /* we can't find lcm string in the command line, the uboot should be old version */ if (p == NULL) return NULL; p += 6; if ((p - saved_command_line) > strlen(saved_command_line + 1)) return NULL; pr_debug("%s, %s\n", __func__, p); q = p; while (*q != ' ' && *q != '\0') q++; memset((void *)mtkfb_lcm_name, 0, sizeof(mtkfb_lcm_name)); strncpy((char *)mtkfb_lcm_name, (const char *)p, (int)(q - p)); mtkfb_lcm_name[q - p + 1] = '\0'; } #endif /* printk("%s, %s\n", __func__, mtkfb_lcm_name); */ return mtkfb_lcm_name; } uint32_t color = 0; unsigned int mtkfb_fm_auto_test(void) { unsigned int result = 0; unsigned int i = 0; unsigned long fbVirAddr; uint32_t fbsize; int r = 0; unsigned int *fb_buffer; struct mtkfb_device *fbdev = (struct mtkfb_device *)mtkfb_fbi->par; struct fb_var_screeninfo var; fbVirAddr = (unsigned long)fbdev->fb_va_base; fb_buffer = (unsigned int *)fbVirAddr; memcpy(&var, &(mtkfb_fbi->var), sizeof(var)); var.activate = FB_ACTIVATE_NOW; var.bits_per_pixel = 32; var.transp.offset = 24; var.transp.length = 8; var.red.offset = 16; var.red.length = 8; var.green.offset = 8; var.green.length = 8; var.blue.offset = 0; var.blue.length = 8; r = mtkfb_check_var(&var, mtkfb_fbi); if (r != 0) PRNERR("failed to mtkfb_check_var\n"); mtkfb_fbi->var = var; #if 0 r = mtkfb_set_par(mtkfb_fbi); if (r != 0) PRNERR("failed to mtkfb_set_par\n"); #endif if (color == 0) color = 0xFF00FF00; fbsize = ALIGN_TO(DISP_GetScreenWidth(), MTK_FB_ALIGNMENT) * DISP_GetScreenHeight() * MTK_FB_PAGES; for (i = 0; i < fbsize; i++) *fb_buffer++ = color; #if 0 if (!primary_display_is_video_mode()) primary_display_trigger(1, NULL, 0); #endif mtkfb_pan_display_impl(&mtkfb_fbi->var, mtkfb_fbi); msleep(100); result = primary_display_lcm_ATA(); if (result == 0) DISPERR("ATA LCM failed\n"); else DISPMSG("ATA LCM passed\n"); return result; } static void _mtkfb_draw_block(unsigned long addr, unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned int color) { int i = 0; int j = 0; unsigned long start_addr = addr + MTK_FB_XRESV * 4 * y + x * 4; for (j = 0; j < h; j++) { for (i = 0; i < w; i++) mt_reg_sync_writel(color, (start_addr + i * 4 + j * MTK_FB_XRESV * 4)); } } #if 0 static long int get_current_time_us(void) { struct timeval t; do_gettimeofday(&t); return (t.tv_sec & 0xFFF) * 1000000 + t.tv_usec; } #endif static int _mtkfb_internal_test(unsigned long va, unsigned int w, unsigned int h) { /* this is for debug, used in bring up day */ unsigned int i = 0; unsigned int color = 0; int _internal_test_block_size = 120; for (i = 0; i < w * h / _internal_test_block_size / _internal_test_block_size; i++) { color = (i & 0x1) * 0xff; /* color += ((i&0x2)>>1)*0xff00; */ /* color += ((i&0x4)>>2)*0xff0000; */ color += 0xff000000U; _mtkfb_draw_block(va, i % (w / _internal_test_block_size) * _internal_test_block_size, i / (w / _internal_test_block_size) * _internal_test_block_size, _internal_test_block_size, _internal_test_block_size, color); } /* unsigned long ttt = get_current_time_us(); */ /* for (i = 0; i < 1000; i++) */ primary_display_trigger(1, NULL, 0); /* ttt = get_current_time_us() - ttt; */ /* DISPMSG("%s, update 1000 times, fps=-.-\n", __func__, (1000*100/(ttt/1000/1000))/100, (1000*100/(ttt/1000/1000))0); */ /* return 0; */ _internal_test_block_size = 20; for (i = 0; i < w * h / _internal_test_block_size / _internal_test_block_size; i++) { color = (i & 0x1) * 0xff; color += ((i & 0x2) >> 1) * 0xff00; color += ((i & 0x4) >> 2) * 0xff0000; color += 0xff000000U; _mtkfb_draw_block(va, i % (w / _internal_test_block_size) * _internal_test_block_size, i / (w / _internal_test_block_size) * _internal_test_block_size, _internal_test_block_size, _internal_test_block_size, color); } primary_display_trigger(1, NULL, 0); _internal_test_block_size = 30; for (i = 0; i < w * h / _internal_test_block_size / _internal_test_block_size; i++) { color = (i & 0x1) * 0xff; color += ((i & 0x2) >> 1) * 0xff00; color += ((i & 0x4) >> 2) * 0xff0000; color += 0xff000000U; _mtkfb_draw_block(va, i % (w / _internal_test_block_size) * _internal_test_block_size, i / (w / _internal_test_block_size) * _internal_test_block_size, _internal_test_block_size, _internal_test_block_size, color); } primary_display_trigger(1, NULL, 0); return 0; } /* used when early porting, test pan display*/ int pan_display_test(int frame_num, int bpp) { int i, j; int Bpp = bpp / 8; unsigned char *fb_va; unsigned long fb_pa; unsigned int fb_size; int w, h, fb_h; int yoffset_max; int yoffset; mtkfb_fbi->var.yoffset = 0; disp_get_fb_address((unsigned long *)&fb_va, &fb_pa); fb_size = mtkfb_fbi->fix.smem_len; w = mtkfb_fbi->var.xres; h = mtkfb_fbi->var.yres; fb_h = fb_size / (w * Bpp) - 10; DISPMSG("%s: frame_num=%d,bpp=%d, w=%d,h=%d,fb_h=%d\n", __func__, frame_num, bpp, w, h, fb_h); for (i = 0; i < fb_h; i++) for (j = 0; j < w; j++) { int x = (i * w + j) * Bpp; fb_va[x++] = (i + j) % 256; fb_va[x++] = (i + j) % 256; fb_va[x++] = (i + j) % 256; if (Bpp == 4) fb_va[x++] = 255; } mtkfb_fbi->var.bits_per_pixel = bpp; yoffset_max = fb_h - h; yoffset = 0; for (i = 0; i < frame_num; i++, yoffset += 10) { if (yoffset >= yoffset_max) yoffset = 0; mtkfb_fbi->var.xoffset = 0; mtkfb_fbi->var.yoffset = yoffset; mtkfb_pan_display_impl(&mtkfb_fbi->var, mtkfb_fbi); } return 0; } /* #define FPGA_DEBUG_PAN */ #ifdef FPGA_DEBUG_PAN static int update_test_kthread(void *data) { /* struct sched_param param = { .sched_priority = RTPM_PRIO_SCRN_UPDATE }; */ /* sched_setscheduler(current, SCHED_RR, ¶m); */ unsigned int i = 0, j = 0; unsigned long fb_va; unsigned long fb_pa; unsigned int *fb_start; unsigned int fbsize = primary_display_get_height() * primary_display_get_width(); mtkfb_fbi->var.yoffset = 0; disp_get_fb_address(&fb_va, &fb_pa); for (;;) { if (kthread_should_stop()) break; msleep(1000); /* 2s */ pr_debug("update test thread work,offset = %d\n", i); mtkfb_fbi->var.yoffset = 0; disp_get_fb_address(&fb_va, &fb_pa); fb_start = (unsigned int *)fb_va; for (j = 0; j < fbsize; j++) { *fb_start = (0x55) << ((i % 4) * 8); fb_start++; } mtkfb_pan_display_impl(&mtkfb_fbi->var, mtkfb_fbi); i++; } MTKFB_LOG("exit esd_recovery_kthread()\n"); return 0; } #endif static int mtkfb_probe(struct device *dev) { struct mtkfb_device *fbdev = NULL; struct fb_info *fbi; int init_state; int r = 0; #ifdef DISP_GPIO_DTS struct platform_device *pdev; long dts_gpio_state = 0; #endif /* DISPFUNC(); */ DISPMSG("%s\n", __func__); #ifdef CONFIG_OF _parse_tag_videolfb(); /* of_scan_flat_dt函数扫描整个设备树， 获取lcm信息， 如果lk初始化过后，将获取的lcm的信息 */ #else { char *p = NULL; pr_debug("%s, %s\n", __func__, saved_command_line); p = strstr(saved_command_line, "fps="); if (p == NULL) { lcd_fps = 6000; pr_debug("[FB driver]can not get fps from uboot\n"); } else { p += 4; r = kstrtol(p, 10, &lcd_fps); if (r) pr_err("DISP/%s: errno %d\n", __func__, r); if (0 == lcd_fps) lcd_fps = 6000; } } #endif init_state = 0; #ifdef DISP_GPIO_DTS pdev = to_platform_device(dev); /* repo call DTS gpio module, if not necessary, invoke nothing */ dts_gpio_state = disp_dts_gpio_init_repo(pdev); if (dts_gpio_state != 0) dev_err(&pdev->dev, "retrieve GPIO DTS failed."); #endif fbi = framebuffer_alloc(sizeof(struct mtkfb_device), dev);//分配framebuffer fbi if (!fbi) { DISPERR("unable to allocate memory for device info\n"); r = -ENOMEM; goto cleanup; } fbdev = (struct mtkfb_device *)fbi->par; fbdev->fb_info = fbi; fbdev->dev = dev; dev_set_drvdata(dev, fbdev); { #ifndef MTK_NO_DISP_IN_LK #ifdef CONFIG_OF /* printk("mtkfb_probe:get FB MEM REG\n"); */ _parse_tag_videolfb(); /* printk("mtkfb_probe: fb_pa = %p\n",(void *)fb_base); */ disp_hal_allocate_framebuffer(fb_base, (fb_base + vramsize - 1), (unsigned long *)&fbdev->fb_va_base, &fb_pa); fbdev->fb_pa_base = fb_base; #else struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); vramsize = res->end - res->start + 1; /* ASSERT(DISP_GetVRamSize() <= (res->end - res->start + 1)); */ disp_hal_allocate_framebuffer(res->start, res->end, (unsigned int *)&fbdev->fb_va_base, &fb_pa); fbdev->fb_pa_base = res->start; #endif #else { struct resource res; unsigned long fb_mem_addr_pa = 0; unsigned long fb_mem_addr_va = 0; pr_debug("mtkfb_probe:get FB MEM REG\n"); if (0 != of_address_to_resource(dev->of_node, 0, &res)) { r = -ENOMEM; goto cleanup; } fb_mem_addr_pa = res.start; fb_mem_addr_va = (unsigned long)of_iomap(dev->of_node, 0); pr_debug("mtkfb_probe: fb_pa = 0x%lx, fb_va = 0x%lx\n", fb_mem_addr_pa, fb_mem_addr_va); disp_hal_allocate_framebuffer(res.start, res.end, (unsigned int *)&fbdev->fb_va_base, &fb_pa); fbdev->fb_pa_base = res.start; fbdev->fb_va_base = fb_mem_addr_va; } #endif } primary_display_set_frame_buffer_address((unsigned long)fbdev->fb_va_base, fb_pa); /* mtkfb should parse lcm name from kernel boot command line */ primary_display_init(mtkfb_find_lcm_driver(), lcd_fps, is_lcm_inited);//显示系统初始化，而具体的IC初始化也是在这一步做的 init_state++; /* 1 */ MTK_FB_XRES = primary_display_get_width(); MTK_FB_YRES = primary_display_get_height(); fb_xres_update = MTK_FB_XRES; fb_yres_update = MTK_FB_YRES; MTK_FB_BPP = primary_display_get_bpp(); MTK_FB_PAGES = primary_display_get_pages(); DISPMSG("MTK_FB_XRES=%d, MTKFB_YRES=%d, MTKFB_BPP=%d, MTK_FB_PAGES=%d, MTKFB_LINE=%d, MTKFB_SIZEV=%d\n", MTK_FB_XRES, MTK_FB_YRES, MTK_FB_BPP, MTK_FB_PAGES, MTK_FB_LINE, MTK_FB_SIZEV); fbdev->fb_size_in_byte = MTK_FB_SIZEV; /* Allocate and initialize video frame buffer */ DISPMSG("[FB Driver] fbdev->fb_pa_base = %p, fbdev->fb_va_base = %p\n", &(fbdev->fb_pa_base), fbdev->fb_va_base); if (!fbdev->fb_va_base) { DISPERR("unable to allocate memory for frame buffer\n"); r = -ENOMEM; goto cleanup; } init_state++; /* 2 */ /* Register to system */ r = mtkfb_fbinfo_init(fbi); if (r) { DISPERR("mtkfb_fbinfo_init fail, r = %d\n", r); goto cleanup; } init_state++; /* 4 */ mtkfb_fbi = fbi; if (disp_helper_get_stage() == DISP_HELPER_STAGE_NORMAL) { /* dal_init should after mtkfb_fbinfo_init, otherwise layer 3 will show dal background color */ DAL_STATUS ret; unsigned long fbVA = (unsigned long)fbdev->fb_va_base; unsigned long fbPA = fb_pa; /* DAL init here */ fbVA += DISP_GetFBRamSize(); fbPA += DISP_GetFBRamSize(); ret = DAL_Init(fbVA, fbPA); } if (disp_helper_get_stage() != DISP_HELPER_STAGE_NORMAL) _mtkfb_internal_test((unsigned long)(fbdev->fb_va_base), MTK_FB_XRES, MTK_FB_YRES); r = mtkfb_register_sysfs(fbdev); if (r) { DISPERR("mtkfb_register_sysfs fail, r = %d\n", r); goto cleanup; } init_state++; /* 5 */ r = register_framebuffer(fbi); if (r != 0) { DISPERR("register_framebuffer failed\n"); goto cleanup; } if (disp_helper_get_stage() != DISP_HELPER_STAGE_NORMAL) primary_display_diagnose(); /* this function will get fb_heap base address to ion for management frame buffer */ ion_drv_create_FB_heap(mtkfb_get_fb_base(), mtkfb_get_fb_size() - DAL_GetLayerSize()); fbdev->state = MTKFB_ACTIVE; #ifdef FPGA_DEBUG_PAN { struct task_struct *update_test_task = NULL; update_test_task = kthread_create(update_test_kthread, NULL, "update_test_kthread"); if (IS_ERR(update_test_task)) MTKFB_LOG("update test task create fail\n"); else wake_up_process(update_test_task); } #endif MSG_FUNC_LEAVE(); return 0; cleanup: mtkfb_free_resources(fbdev, init_state); /* printk("mtkfb_probe end\n"); */ return r; } /* Called when the device is being detached from the driver */ static int mtkfb_remove(struct device *dev) { struct mtkfb_device *fbdev = dev_get_drvdata(dev); enum mtkfb_state saved_state = fbdev->state; MSG_FUNC_ENTER(); /* FIXME: wait till completion of pending events */ fbdev->state = MTKFB_DISABLED; mtkfb_free_resources(fbdev, saved_state); MSG_FUNC_LEAVE(); return 0; } /* PM suspend */ static int mtkfb_suspend(struct device *pdev, pm_message_t mesg) { /* NOT_REFERENCED(pdev); */ MSG_FUNC_ENTER(); MTKFB_LOG("[FB Driver] mtkfb_suspend(): 0x%x\n", mesg.event); ovl2mem_wait_done(); MSG_FUNC_LEAVE(); return 0; } bool mtkfb_is_suspend(void) { return primary_display_is_sleepd(); } EXPORT_SYMBOL(mtkfb_is_suspend); int mtkfb_ipoh_restore(struct notifier_block *nb, unsigned long val, void *ign) { switch (val) { case PM_RESTORE_PREPARE: primary_display_ipoh_restore(); pr_debug("[FB Driver] mtkfb_ipoh_restore PM_RESTORE_PREPARE\n"); return NOTIFY_DONE; case PM_POST_RESTORE: primary_display_ipoh_recover(); pr_debug("[FB Driver] %s pm_event: %lu\n", __func__, val); return NOTIFY_DONE; } return NOTIFY_OK; } int mtkfb_ipo_init(void) { pm_nb.notifier_call = mtkfb_ipoh_restore; pm_nb.priority = 0; register_pm_notifier(&pm_nb); return 0; } static void mtkfb_shutdown(struct device *pdev) { PRNWARN("[FB Driver] mtkfb_shutdown()\n"); /* mt65xx_leds_brightness_set(MT65XX_LED_TYPE_LCD, LED_OFF); */ if (!lcd_fps) msleep(30); else msleep(2 * 100000 / lcd_fps); /* Delay 2 frames. */ if (primary_display_is_sleepd()) { PRNWARN("mtkfb has been power off\n"); return; } primary_display_suspend(); PRNWARN("[FB Driver] leave mtkfb_shutdown\n"); } void mtkfb_clear_lcm(void) { } static void mtkfb_blank_suspend(void) { int ret = 0; MSG_FUNC_ENTER(); if (disp_helper_get_stage() != DISP_HELPER_STAGE_NORMAL) return; #ifdef CONFIG_SINGLE_PANEL_OUTPUT is_early_suspended = true; #endif DISPMSG("[FB Driver] enter early_suspend\n"); #ifdef CONFIG_MTK_LEDS /* mt65xx_leds_brightness_set(MT65XX_LED_TYPE_LCD, LED_OFF); */ #endif msleep(30); ret = primary_display_suspend(); if (ret < 0) { DISPERR("primary display suspend failed\n"); return; } DISPMSG("[FB Driver] leave early_suspend\n"); } /* PM resume */ static int mtkfb_resume(struct device *pdev) { /* NOT_REFERENCED(pdev); */ MSG_FUNC_ENTER(); MTKFB_LOG("[FB Driver] mtkfb_resume()\n"); MSG_FUNC_LEAVE(); return 0; } static void mtkfb_blank_resume(void) { int ret = 0; MSG_FUNC_ENTER(); if (disp_helper_get_stage() != DISP_HELPER_STAGE_NORMAL) return; PRNWARN("[FB Driver] enter late_resume\n"); #ifdef CONFIG_SINGLE_PANEL_OUTPUT is_early_suspended = false; #endif ret = primary_display_resume(); if (ret) { DISPERR("primary display resume failed\n"); return; } PRNWARN("[FB Driver] leave late_resume\n"); } /*---------------------------------------------------------------------------*/ #ifdef CONFIG_PM /*---------------------------------------------------------------------------*/ int mtkfb_pm_suspend(struct device *device) { /* pr_debug("calling %s()\n", __func__); */ struct platform_device *pdev = to_platform_device(device); BUG_ON(pdev == NULL); return mtkfb_suspend((struct device *)pdev, PMSG_SUSPEND); } int mtkfb_pm_resume(struct device *device) { /* pr_debug("calling %s()\n", __func__); */ struct platform_device *pdev = to_platform_device(device); BUG_ON(pdev == NULL); return mtkfb_resume((struct device *)pdev); } int mtkfb_pm_freeze(struct device *device) { primary_display_esd_check_enable(0); return 0; } int mtkfb_pm_restore_noirq(struct device *device) { DISPMSG("%s: %d\n", __func__, __LINE__); is_ipoh_bootup = true; #ifndef CONFIG_MTK_CLKMGR dpmgr_path_power_on(primary_get_dpmgr_handle(), CMDQ_DISABLE); #endif return 0; } /*---------------------------------------------------------------------------*/ #else /*CONFIG_PM */ /*---------------------------------------------------------------------------*/ #define mtkfb_pm_suspend NULL #define mtkfb_pm_resume NULL #define mtkfb_pm_restore_noirq NULL #define mtkfb_pm_freeze NULL /*---------------------------------------------------------------------------*/ #endif /*CONFIG_PM */ /*---------------------------------------------------------------------------*/ static const struct of_device_id mtkfb_of_ids[] = { {.compatible = "mediatek,mtkfb",}, {} }; const struct dev_pm_ops mtkfb_pm_ops = { .suspend = mtkfb_pm_suspend, .resume = mtkfb_pm_resume, .freeze = mtkfb_pm_freeze, .thaw = mtkfb_pm_resume, .poweroff = mtkfb_pm_suspend, .restore = mtkfb_pm_resume, .restore_noirq = mtkfb_pm_restore_noirq, }; static struct platform_driver mtkfb_driver = { .driver = { .name = MTKFB_DRIVER, #ifdef CONFIG_PM .pm = &mtkfb_pm_ops, #endif .bus = &platform_bus_type, .probe = mtkfb_probe,//众所周知这个是驱动的最重要和功能实现的部分 .remove = mtkfb_remove, .suspend = mtkfb_suspend, .resume = mtkfb_resume, .shutdown = mtkfb_shutdown, .of_match_table = mtkfb_of_ids, //这个就是为了与设备树匹配的部分 }, }; #if 0 #ifdef CONFIG_HAS_EARLYSUSPEND static struct early_suspend mtkfb_early_suspend_handler = { .level = EARLY_SUSPEND_LEVEL_DISABLE_FB, .suspend = mtkfb_early_suspend, .resume = mtkfb_late_resume, }; #endif #endif int mtkfb_get_debug_state(char *stringbuf, int buf_len) { int len = 0; struct mtkfb_device *fbdev = (struct mtkfb_device *)mtkfb_fbi->par; unsigned long va = (unsigned long)fbdev->fb_va_base; unsigned long mva = (unsigned long)fbdev->fb_pa_base; unsigned long pa = fbdev->fb_pa_base; unsigned int resv_size = vramsize; len += scnprintf(stringbuf + len, buf_len - len, "|--------------------------------------------------------------------------------------|\n"); /* len += scnprintf(stringbuf+len, buf_len - len, "********MTKFB Driver General Information********\n"); */ len += scnprintf(stringbuf + len, buf_len - len, "|Framebuffer VA:0x%lx, PA:0x%lx, MVA:0x%lx, Reserved Size:0xx|%d\n", va, pa, mva, resv_size, resv_size); len += scnprintf(stringbuf + len, buf_len - len, "|xoffset=%d, yoffset=%d\n", mtkfb_fbi->var.xoffset, mtkfb_fbi->var.yoffset); len += scnprintf(stringbuf + len, buf_len - len, "|framebuffer line alignment(for gpu)=%d\n", MTK_FB_ALIGNMENT); len += scnprintf(stringbuf + len, buf_len - len, "|xres=%d, yres=%d,bpp=%d,pages=%d,linebytes=%d,total size=%d\n", MTK_FB_XRES, MTK_FB_YRES, MTK_FB_BPP, MTK_FB_PAGES, MTK_FB_LINE, MTK_FB_SIZEV); /* use extern in case DAL_LOCK is hold, then can't get any debug info */ len += scnprintf(stringbuf + len, buf_len - len, "|AEE Layer is %s\n", isAEEEnabled ? "enabled" : "disabled"); return len; } /* Register both the driver and the device */ int __init mtkfb_init(void) { int r = 0; MSG_FUNC_ENTER(); if (platform_driver_register(&mtkfb_driver)) {//注册MTKFB platform驱动 PRNERR("failed to register mtkfb driver\n"); r = -ENODEV; goto exit; } #if 0 #ifdef CONFIG_HAS_EARLYSUSPEND register_early_suspend(&mtkfb_early_suspend_handler); #endif #endif /* FIXME: find definition */ PanelMaster_Init(); DBG_Init(); mtkfb_ipo_init(); exit: MSG_FUNC_LEAVE(); return r; } static void __exit mtkfb_cleanup(void) { MSG_FUNC_ENTER(); platform_driver_unregister(&mtkfb_driver); #if 0 #ifdef CONFIG_HAS_EARLYSUSPEND unregister_early_suspend(&mtkfb_early_suspend_handler); #endif #endif /* FIXME: find definition of PanelMaster_Deinit */ /* PanelMaster_Deinit(); */ DBG_Deinit(); MSG_FUNC_LEAVE(); } module_init(mtkfb_init);//驱动入口 module_exit(mtkfb_cleanup); MODULE_DESCRIPTION("MEDIATEK framebuffer driver"); MODULE_AUTHOR("Xuecheng Zhang <Xuecheng.Zhang@mediatek.com>"); MODULE_LICENSE("GPL"); 没有做完。 下次补充吧！
