The patch titled pxafb: move parallel LCD timing setup into dedicate function has been added to the -mm tree. Its filename is pxafb-move-parallel-lcd-timing-setup-into-dedicate-function.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: pxafb: move parallel LCD timing setup into dedicate function From: Eric Miao <eric.miao@xxxxxxxxxxx> the new_regs stuff has been removed, and all the setup (modification to those fbi->reg_*) is protected with IRQ disabled * disable IRQ is too heavy here, provided that no IRQ context will touch the fbi->reg_* and the only possible contending place is in the CPUFREQ_POSTCHANGE (task context), a mutex will be better, leave this for future improvement Signed-off-by: eric miao <eric.miao@xxxxxxxxxxx> Cc: "Antonino A. Daplas" <adaplas@xxxxxxx> Cc: Russell King <rmk@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/video/pxafb.c | 89 +++++++++++++++++++++------------------- drivers/video/pxafb.h | 8 --- 2 files changed, 47 insertions(+), 50 deletions(-) diff -puN drivers/video/pxafb.c~pxafb-move-parallel-lcd-timing-setup-into-dedicate-function drivers/video/pxafb.c --- a/drivers/video/pxafb.c~pxafb-move-parallel-lcd-timing-setup-into-dedicate-function +++ a/drivers/video/pxafb.c @@ -585,6 +585,43 @@ static int setup_frame_dma(struct pxafb_ return 0; } +static void setup_parallel_timing(struct pxafb_info *fbi, + struct fb_var_screeninfo *var) +{ + unsigned int lines_per_panel, pcd = get_pcd(fbi, var->pixclock); + + fbi->reg_lccr1 = + LCCR1_DisWdth(var->xres) + + LCCR1_HorSnchWdth(var->hsync_len) + + LCCR1_BegLnDel(var->left_margin) + + LCCR1_EndLnDel(var->right_margin); + + /* + * If we have a dual scan LCD, we need to halve + * the YRES parameter. + */ + lines_per_panel = var->yres; + if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) + lines_per_panel /= 2; + + fbi->reg_lccr2 = + LCCR2_DisHght(lines_per_panel) + + LCCR2_VrtSnchWdth(var->vsync_len) + + LCCR2_BegFrmDel(var->upper_margin) + + LCCR2_EndFrmDel(var->lower_margin); + + fbi->reg_lccr3 = fbi->lccr3 | + (var->sync & FB_SYNC_HOR_HIGH_ACT ? + LCCR3_HorSnchH : LCCR3_HorSnchL) | + (var->sync & FB_SYNC_VERT_HIGH_ACT ? + LCCR3_VrtSnchH : LCCR3_VrtSnchL); + + if (pcd) { + fbi->reg_lccr3 |= LCCR3_PixClkDiv(pcd); + set_hsync_time(fbi, pcd); + } +} + /* * pxafb_activate_var(): * Configures LCD Controller based on entries in var parameter. @@ -593,9 +630,7 @@ static int setup_frame_dma(struct pxafb_ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *fbi) { - struct pxafb_lcd_reg new_regs; u_long flags; - u_int lines_per_panel, pcd = get_pcd(fbi, var->pixclock); size_t nbytes; #if DEBUG_VAR @@ -636,61 +671,31 @@ static int pxafb_activate_var(struct fb_ printk(KERN_ERR "%s: invalid lower_margin %d\n", fbi->fb.fix.id, var->lower_margin); #endif + /* Update shadow copy atomically */ + local_irq_save(flags); + + setup_parallel_timing(fbi, var); - new_regs.lccr0 = fbi->lccr0 | + fbi->reg_lccr0 = fbi->lccr0 | (LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM | LCCR0_QDM | LCCR0_BM | LCCR0_OUM); - new_regs.lccr1 = - LCCR1_DisWdth(var->xres) + - LCCR1_HorSnchWdth(var->hsync_len) + - LCCR1_BegLnDel(var->left_margin) + - LCCR1_EndLnDel(var->right_margin); - - /* - * If we have a dual scan LCD, we need to halve - * the YRES parameter. - */ - lines_per_panel = var->yres; - if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) - lines_per_panel /= 2; - - new_regs.lccr2 = - LCCR2_DisHght(lines_per_panel) + - LCCR2_VrtSnchWdth(var->vsync_len) + - LCCR2_BegFrmDel(var->upper_margin) + - LCCR2_EndFrmDel(var->lower_margin); + fbi->reg_lccr3 |= pxafb_bpp_to_lccr3(var); - new_regs.lccr3 = fbi->lccr3 | - pxafb_bpp_to_lccr3(var) | - (var->sync & FB_SYNC_HOR_HIGH_ACT ? - LCCR3_HorSnchH : LCCR3_HorSnchL) | - (var->sync & FB_SYNC_VERT_HIGH_ACT ? - LCCR3_VrtSnchH : LCCR3_VrtSnchL); + nbytes = var->yres * fbi->fb.fix.line_length; - if (pcd) - new_regs.lccr3 |= LCCR3_PixClkDiv(pcd); - - /* Update shadow copy atomically */ - local_irq_save(flags); - - nbytes = lines_per_panel * fbi->fb.fix.line_length; - - if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) + if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) { + nbytes = nbytes / 2; setup_frame_dma(fbi, DMA_LOWER, PAL_NONE, nbytes, nbytes); + } if (var->bits_per_pixel >= 16) setup_frame_dma(fbi, DMA_BASE, PAL_NONE, 0, nbytes); else setup_frame_dma(fbi, DMA_BASE, PAL_BASE, 0, nbytes); - fbi->reg_lccr0 = new_regs.lccr0; - fbi->reg_lccr1 = new_regs.lccr1; - fbi->reg_lccr2 = new_regs.lccr2; - fbi->reg_lccr3 = new_regs.lccr3; fbi->reg_lccr4 = lcd_readl(fbi, LCCR4) & ~LCCR4_PAL_FOR_MASK; fbi->reg_lccr4 |= (fbi->lccr4 & LCCR4_PAL_FOR_MASK); - set_hsync_time(fbi, pcd); local_irq_restore(flags); /* diff -puN drivers/video/pxafb.h~pxafb-move-parallel-lcd-timing-setup-into-dedicate-function drivers/video/pxafb.h --- a/drivers/video/pxafb.h~pxafb-move-parallel-lcd-timing-setup-into-dedicate-function +++ a/drivers/video/pxafb.h @@ -21,14 +21,6 @@ * for more details. */ -/* Shadows for LCD controller registers */ -struct pxafb_lcd_reg { - unsigned int lccr0; - unsigned int lccr1; - unsigned int lccr2; - unsigned int lccr3; -}; - /* PXA LCD DMA descriptor */ struct pxafb_dma_descriptor { unsigned int fdadr; _ Patches currently in -mm which might be from eric.miao@xxxxxxxxxxx are git-arm.patch pxafb-un-nest-pxafb_parse_options-to-cleanup-the-coding-style-issue.patch pxafb-fix-various-coding-style-issues-for-pxafb.patch pxafb-purge-unnecessary-pr_debug-and-comments-from-pxafb.patch pxafb-sanitize-the-usage-of-ifdef-processing-pxafb-parameters.patch pxafb-convert-fb-driver-to-use-ioremap-and-__raw_readl-writel.patch pxafb-introduce-struct-pxafb_dma_buff-for-palette-and-dma-descriptors.patch pxafb-introduce-register-independent-lcd-connection-type-for-pxafb.patch pxafb-make-lubbock-mainstone-zylonite-littleton-to-use-new-lcd-connection-type.patch pxafb-introduce-lcd_readwritel-to-wrap-the-__raw_readwritel.patch pxafb-use-completion-for-lcd-disable-wait-code.patch pxafb-move-parallel-lcd-timing-setup-into-dedicate-function.patch pxafb-preliminary-smart-panel-interface-support.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html