/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mdp.h" #include "msm_fb.h" #include "mddihost.h" static uint32 mdp_last_dma2_update_width; static uint32 mdp_last_dma2_update_height; static uint32 mdp_curr_dma2_update_width; static uint32 mdp_curr_dma2_update_height; ktime_t mdp_dma2_last_update_time = { 0 }; int mdp_lcd_rd_cnt_offset_slow = 20; int mdp_lcd_rd_cnt_offset_fast = 20; int mdp_vsync_usec_wait_line_too_short = 5; uint32 mdp_dma2_update_time_in_usec; uint32 mdp_total_vdopkts; extern u32 msm_fb_debug_enabled; extern struct workqueue_struct *mdp_dma_wq; int vsync_start_y_adjust = 4; static void mdp_dma2_update_lcd(struct msm_fb_data_type *mfd) { MDPIBUF *iBuf = &mfd->ibuf; int mddi_dest = FALSE; uint32 outBpp = iBuf->bpp; uint32 dma2_cfg_reg; uint8 *src; uint32 mddi_ld_param; uint16 mddi_vdo_packet_reg; struct msm_fb_panel_data *pdata = (struct msm_fb_panel_data *)mfd->pdev->dev.platform_data; uint32 ystride = mfd->fbi->fix.line_length; dma2_cfg_reg = DMA_PACK_TIGHT | DMA_PACK_ALIGN_LSB | DMA_OUT_SEL_AHB | DMA_IBUF_NONCONTIGUOUS; #ifdef CONFIG_FB_MSM_MDP30 /* * Software workaround: On 7x25/7x27, the MDP will not * respond if dma_w is 1 pixel. Set the update width to * 2 pixels and adjust the x offset if needed. */ if (iBuf->dma_w == 1) { iBuf->dma_w = 2; if (iBuf->dma_x == (iBuf->ibuf_width - 2)) iBuf->dma_x--; } #endif if (mfd->fb_imgType == MDP_BGR_565) dma2_cfg_reg |= DMA_PACK_PATTERN_BGR; else dma2_cfg_reg |= DMA_PACK_PATTERN_RGB; if (outBpp == 4) dma2_cfg_reg |= DMA_IBUF_C3ALPHA_EN; if (outBpp == 2) dma2_cfg_reg |= DMA_IBUF_FORMAT_RGB565; mddi_ld_param = 0; mddi_vdo_packet_reg = mfd->panel_info.mddi.vdopkt; if ((mfd->panel_info.type == MDDI_PANEL) || (mfd->panel_info.type == EXT_MDDI_PANEL)) { dma2_cfg_reg |= DMA_OUT_SEL_MDDI; mddi_dest = TRUE; if (mfd->panel_info.type == MDDI_PANEL) { mdp_total_vdopkts++; if (mfd->panel_info.pdest == DISPLAY_1) { dma2_cfg_reg |= DMA_MDDI_DMAOUT_LCD_SEL_PRIMARY; mddi_ld_param = 0; #ifdef MDDI_HOST_WINDOW_WORKAROUND mddi_window_adjust(mfd, iBuf->dma_x, iBuf->dma_w - 1, iBuf->dma_y, iBuf->dma_h - 1); #endif } else { dma2_cfg_reg |= DMA_MDDI_DMAOUT_LCD_SEL_SECONDARY; mddi_ld_param = 1; #ifdef MDDI_HOST_WINDOW_WORKAROUND mddi_window_adjust(mfd, iBuf->dma_x, iBuf->dma_w - 1, iBuf->dma_y, iBuf->dma_h - 1); #endif } } else { dma2_cfg_reg |= DMA_MDDI_DMAOUT_LCD_SEL_EXTERNAL; mddi_ld_param = 2; } } else { if (mfd->panel_info.pdest == DISPLAY_1) { dma2_cfg_reg |= DMA_AHBM_LCD_SEL_PRIMARY; outp32(MDP_EBI2_LCD0, mfd->data_port_phys); } else { dma2_cfg_reg |= DMA_AHBM_LCD_SEL_SECONDARY; outp32(MDP_EBI2_LCD1, mfd->data_port_phys); } } dma2_cfg_reg |= DMA_DITHER_EN; src = (uint8 *) iBuf->buf; /* starting input address */ src += iBuf->dma_x * outBpp + iBuf->dma_y * ystride; mdp_curr_dma2_update_width = iBuf->dma_w; mdp_curr_dma2_update_height = iBuf->dma_h; /* MDP cmd block enable */ mdp_pipe_ctrl(MDP_CMD_BLOCK, MDP_BLOCK_POWER_ON, FALSE); #ifdef CONFIG_FB_MSM_MDP22 MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x0184, (iBuf->dma_h << 16 | iBuf->dma_w)); MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x0188, src); MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x018C, ystride); #else MDP_OUTP(MDP_BASE + 0x90004, (iBuf->dma_h << 16 | iBuf->dma_w)); MDP_OUTP(MDP_BASE + 0x90008, src); MDP_OUTP(MDP_BASE + 0x9000c, ystride); #endif if (mfd->panel_info.bpp == 18) { dma2_cfg_reg |= DMA_DSTC0G_6BITS | /* 666 18BPP */ DMA_DSTC1B_6BITS | DMA_DSTC2R_6BITS; } else { dma2_cfg_reg |= DMA_DSTC0G_6BITS | /* 565 16BPP */ DMA_DSTC1B_5BITS | DMA_DSTC2R_5BITS; } if (mddi_dest) { #ifdef CONFIG_FB_MSM_MDP22 MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x0194, (iBuf->dma_y << 16) | iBuf->dma_x); MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x01a0, mddi_ld_param); MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x01a4, (MDDI_VDO_PACKET_DESC << 16) | mddi_vdo_packet_reg); #else MDP_OUTP(MDP_BASE + 0x90010, (iBuf->dma_y << 16) | iBuf->dma_x); MDP_OUTP(MDP_BASE + 0x00090, mddi_ld_param); MDP_OUTP(MDP_BASE + 0x00094, (MDDI_VDO_PACKET_DESC << 16) | mddi_vdo_packet_reg); #endif } else { /* setting EBI2 LCDC write window */ pdata->set_rect(iBuf->dma_x, iBuf->dma_y, iBuf->dma_w, iBuf->dma_h); } /* dma2 config register */ #ifdef MDP_HW_VSYNC MDP_OUTP(MDP_BASE + 0x90000, dma2_cfg_reg); if ((mfd->use_mdp_vsync) && (mfd->ibuf.vsync_enable) && (mfd->panel_info.lcd.vsync_enable)) { uint32 start_y; if (vsync_start_y_adjust <= iBuf->dma_y) start_y = iBuf->dma_y - vsync_start_y_adjust; else start_y = (mfd->total_lcd_lines - 1) - (vsync_start_y_adjust - iBuf->dma_y); /* * MDP VSYNC clock must be On by now so, we don't have to * re-enable it */ MDP_OUTP(MDP_BASE + 0x210, start_y); MDP_OUTP(MDP_BASE + 0x20c, 1); /* enable prim vsync */ } else { MDP_OUTP(MDP_BASE + 0x20c, 0); /* disable prim vsync */ } #else #ifdef CONFIG_FB_MSM_MDP22 MDP_OUTP(MDP_CMD_DEBUG_ACCESS_BASE + 0x0180, dma2_cfg_reg); #else MDP_OUTP(MDP_BASE + 0x90000, dma2_cfg_reg); #endif #endif /* MDP_HW_VSYNC */ /* MDP cmd block disable */ mdp_pipe_ctrl(MDP_CMD_BLOCK, MDP_BLOCK_POWER_OFF, FALSE); } static ktime_t vt = { 0 }; int mdp_usec_diff_threshold = 100; int mdp_expected_usec_wait; enum hrtimer_restart mdp_dma2_vsync_hrtimer_handler(struct hrtimer *ht) { struct msm_fb_data_type *mfd = NULL; mfd = container_of(ht, struct msm_fb_data_type, dma_hrtimer); mdp_pipe_kickoff(MDP_DMA2_TERM, mfd); if (msm_fb_debug_enabled) { ktime_t t; int usec_diff; int actual_wait; t = ktime_get_real(); actual_wait = (t.tv.sec - vt.tv.sec) * 1000000 + (t.tv.nsec - vt.tv.nsec) / 1000; usec_diff = actual_wait - mdp_expected_usec_wait; if ((mdp_usec_diff_threshold < usec_diff) || (usec_diff < 0)) MSM_FB_DEBUG ("HRT Diff = %d usec Exp=%d usec Act=%d usec\n", usec_diff, mdp_expected_usec_wait, actual_wait); } return HRTIMER_NORESTART; } static void mdp_dma_schedule(struct msm_fb_data_type *mfd, uint32 term) { /* * dma2 configure VSYNC block * vsync supported on Primary LCD only for now */ int32 mdp_lcd_rd_cnt; uint32 usec_wait_time; uint32 start_y; /* * ToDo: if we can move HRT timer callback to workqueue, we can * move DMA2 power on under mdp_pipe_kickoff(). * This will save a power for hrt time wait. * However if the latency for context switch (hrt irq -> workqueue) * is too big, we will miss the vsync timing. */ if (term == MDP_DMA2_TERM) mdp_pipe_ctrl(MDP_DMA2_BLOCK, MDP_BLOCK_POWER_ON, FALSE); mdp_dma2_update_time_in_usec = MDP_KTIME2USEC(mdp_dma2_last_update_time); if ((!mfd->ibuf.vsync_enable) || (!mfd->panel_info.lcd.vsync_enable) || (mfd->use_mdp_vsync)) { mdp_pipe_kickoff(term, mfd); return; } /* SW vsync logic starts here */ /* get current rd counter */ mdp_lcd_rd_cnt = mdp_get_lcd_line_counter(mfd); if (mdp_dma2_update_time_in_usec != 0) { uint32 num, den; /* * roi width boundary calculation to know the size of pixel * width that MDP can send faster or slower than LCD read * pointer */ num = mdp_last_dma2_update_width * mdp_last_dma2_update_height; den = (((mfd->panel_info.lcd.refx100 * mfd->total_lcd_lines) / 1000) * (mdp_dma2_update_time_in_usec / 100)) / 1000; if (den == 0) mfd->vsync_width_boundary[mdp_last_dma2_update_width] = mfd->panel_info.xres + 1; else mfd->vsync_width_boundary[mdp_last_dma2_update_width] = (int)(num / den); } if (mfd->vsync_width_boundary[mdp_last_dma2_update_width] > mdp_curr_dma2_update_width) { /* MDP wrp is faster than LCD rdp */ mdp_lcd_rd_cnt += mdp_lcd_rd_cnt_offset_fast; } else { /* MDP wrp is slower than LCD rdp */ mdp_lcd_rd_cnt -= mdp_lcd_rd_cnt_offset_slow; } if (mdp_lcd_rd_cnt < 0) mdp_lcd_rd_cnt = mfd->total_lcd_lines + mdp_lcd_rd_cnt; else if (mdp_lcd_rd_cnt > mfd->total_lcd_lines) mdp_lcd_rd_cnt = mdp_lcd_rd_cnt - mfd->total_lcd_lines - 1; /* get wrt pointer position */ start_y = mfd->ibuf.dma_y; /* measure line difference between start_y and rd counter */ if (start_y > mdp_lcd_rd_cnt) { /* * *100 for lcd_ref_hzx100 was already multiplied by 100 * *1000000 is for usec conversion */ if ((start_y - mdp_lcd_rd_cnt) <= mdp_vsync_usec_wait_line_too_short) usec_wait_time = 0; else usec_wait_time = ((start_y - mdp_lcd_rd_cnt) * 1000000) / ((mfd->total_lcd_lines * mfd->panel_info.lcd.refx100) / 100); } else { if ((start_y + (mfd->total_lcd_lines - mdp_lcd_rd_cnt)) <= mdp_vsync_usec_wait_line_too_short) usec_wait_time = 0; else usec_wait_time = ((start_y + (mfd->total_lcd_lines - mdp_lcd_rd_cnt)) * 1000000) / ((mfd->total_lcd_lines * mfd->panel_info.lcd.refx100) / 100); } mdp_last_dma2_update_width = mdp_curr_dma2_update_width; mdp_last_dma2_update_height = mdp_curr_dma2_update_height; if (usec_wait_time == 0) { mdp_pipe_kickoff(term, mfd); } else { ktime_t wait_time; wait_time.tv.sec = 0; wait_time.tv.nsec = usec_wait_time * 1000; if (msm_fb_debug_enabled) { vt = ktime_get_real(); mdp_expected_usec_wait = usec_wait_time; } hrtimer_start(&mfd->dma_hrtimer, wait_time, HRTIMER_MODE_REL); } } #ifdef MDDI_HOST_WINDOW_WORKAROUND void mdp_dma2_update(struct msm_fb_data_type *mfd) { MDPIBUF *iBuf; uint32 upper_height; if (mfd->panel.type == EXT_MDDI_PANEL) { mdp_dma2_update_sub(mfd); return; } iBuf = &mfd->ibuf; upper_height = (uint32) mddi_assign_pkt_height((uint16) iBuf->dma_w, (uint16) iBuf->dma_h, 18); if (upper_height >= iBuf->dma_h) { mdp_dma2_update_sub(mfd); } else { MDPIBUF lower_height; /* sending the upper region first */ lower_height = iBuf->dma_h - upper_height; iBuf->dma_h = upper_height; mdp_dma2_update_sub(mfd); /* sending the lower region second */ iBuf->dma_h = lower_height; iBuf->dma_y += lower_height; iBuf->vsync_enable = FALSE; mdp_dma2_update_sub(mfd); } } void mdp_dma2_update_sub(struct msm_fb_data_type *mfd) #else void mdp_dma2_update(struct msm_fb_data_type *mfd) #endif { down(&mfd->dma->mutex); if ((mfd) && (!mfd->dma->busy) && (mfd->panel_power_on)) { down(&mfd->sem); mfd->ibuf_flushed = TRUE; mdp_dma2_update_lcd(mfd); mdp_enable_irq(MDP_DMA2_TERM); mfd->dma->busy = TRUE; INIT_COMPLETION(mfd->dma->comp); /* schedule DMA to start */ mdp_dma_schedule(mfd, MDP_DMA2_TERM); up(&mfd->sem); /* wait until DMA finishes the current job */ wait_for_completion_killable(&mfd->dma->comp); mdp_disable_irq(MDP_DMA2_TERM); /* signal if pan function is waiting for the update completion */ if (mfd->pan_waiting) { mfd->pan_waiting = FALSE; complete(&mfd->pan_comp); } } up(&mfd->dma->mutex); } void mdp_lcd_update_workqueue_handler(struct work_struct *work) { struct msm_fb_data_type *mfd = NULL; mfd = container_of(work, struct msm_fb_data_type, dma_update_worker); if (mfd) mfd->dma_fnc(mfd); } void mdp_set_dma_pan_info(struct fb_info *info, struct mdp_dirty_region *dirty, boolean sync) { struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par; MDPIBUF *iBuf; int bpp = info->var.bits_per_pixel / 8; down(&mfd->sem); iBuf = &mfd->ibuf; iBuf->buf = (uint8 *) info->fix.smem_start; iBuf->buf += info->var.xoffset * bpp + info->var.yoffset * info->fix.line_length; iBuf->ibuf_width = info->var.xres_virtual; iBuf->bpp = bpp; iBuf->vsync_enable = sync; if (dirty) { /* * ToDo: dirty region check inside var.xoffset+xres * <-> var.yoffset+yres */ iBuf->dma_x = dirty->xoffset % info->var.xres; iBuf->dma_y = dirty->yoffset % info->var.yres; iBuf->dma_w = dirty->width; iBuf->dma_h = dirty->height; } else { iBuf->dma_x = 0; iBuf->dma_y = 0; iBuf->dma_w = info->var.xres; iBuf->dma_h = info->var.yres; } mfd->ibuf_flushed = FALSE; up(&mfd->sem); } void mdp_set_offset_info(struct fb_info *info, uint32 addr, uint32 sync) { struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par; MDPIBUF *iBuf; int bpp = info->var.bits_per_pixel / 8; down(&mfd->sem); iBuf = &mfd->ibuf; iBuf->ibuf_width = info->var.xres_virtual; iBuf->bpp = bpp; iBuf->vsync_enable = sync; iBuf->dma_x = 0; iBuf->dma_y = 0; iBuf->dma_w = info->var.xres; iBuf->dma_h = info->var.yres; iBuf->buf = (uint8 *) addr; mfd->ibuf_flushed = FALSE; up(&mfd->sem); } void mdp_dma_pan_update(struct fb_info *info) { struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par; MDPIBUF *iBuf; iBuf = &mfd->ibuf; if (mfd->sw_currently_refreshing) { /* we need to wait for the pending update */ mfd->pan_waiting = TRUE; if (!mfd->ibuf_flushed) { wait_for_completion_killable(&mfd->pan_comp); } /* waiting for this update to complete */ mfd->pan_waiting = TRUE; wait_for_completion_killable(&mfd->pan_comp); } else mfd->dma_fnc(mfd); } void mdp_refresh_screen(unsigned long data) { struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)data; if ((mfd->sw_currently_refreshing) && (mfd->sw_refreshing_enable)) { init_timer(&mfd->refresh_timer); mfd->refresh_timer.function = mdp_refresh_screen; mfd->refresh_timer.data = data; if (mfd->dma->busy) /* come back in 1 msec */ mfd->refresh_timer.expires = jiffies + (HZ / 1000); else mfd->refresh_timer.expires = jiffies + mfd->refresh_timer_duration; add_timer(&mfd->refresh_timer); if (!mfd->dma->busy) { if (!queue_work(mdp_dma_wq, &mfd->dma_update_worker)) { MSM_FB_DEBUG("mdp_dma: can't queue_work! -> \ MDP/MDDI/LCD clock speed needs to be increased\n"); } } } else { if (!mfd->hw_refresh) complete(&mfd->refresher_comp); } }