f6e45661f9
Rename dma_*_writecombine() to dma_*_wc(), so that the naming is coherent across the various write-combining APIs. Keep the old names for compatibility for a while, these can be removed at a later time. A guard is left to enable backporting of the rename, and later remove of the old mapping defines seemlessly. Build tested successfully with allmodconfig. The following Coccinelle SmPL patch was used for this simple transformation: @ rename_dma_alloc_writecombine @ expression dev, size, dma_addr, gfp; @@ -dma_alloc_writecombine(dev, size, dma_addr, gfp) +dma_alloc_wc(dev, size, dma_addr, gfp) @ rename_dma_free_writecombine @ expression dev, size, cpu_addr, dma_addr; @@ -dma_free_writecombine(dev, size, cpu_addr, dma_addr) +dma_free_wc(dev, size, cpu_addr, dma_addr) @ rename_dma_mmap_writecombine @ expression dev, vma, cpu_addr, dma_addr, size; @@ -dma_mmap_writecombine(dev, vma, cpu_addr, dma_addr, size) +dma_mmap_wc(dev, vma, cpu_addr, dma_addr, size) We also keep the old names as compatibility helpers, and guard against their definition to make backporting easier. Generated-by: Coccinelle SmPL Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bhelgaas@google.com Cc: bp@suse.de Cc: dan.j.williams@intel.com Cc: daniel.vetter@ffwll.ch Cc: dhowells@redhat.com Cc: julia.lawall@lip6.fr Cc: konrad.wilk@oracle.com Cc: linux-fbdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: luto@amacapital.net Cc: mst@redhat.com Cc: tomi.valkeinen@ti.com Cc: toshi.kani@hp.com Cc: vinod.koul@intel.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1453516462-4844-1-git-send-email-mcgrof@do-not-panic.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/*
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* linux/arch/arm/mach-nspire/clcd.c
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*
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* Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2, as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/amba/bus.h>
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#include <linux/amba/clcd.h>
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#include <linux/dma-mapping.h>
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static struct clcd_panel nspire_cx_lcd_panel = {
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.mode = {
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.name = "Color LCD",
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.refresh = 60,
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.xres = 320,
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.yres = 240,
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.sync = 0,
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.vmode = FB_VMODE_NONINTERLACED,
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.pixclock = 1,
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.hsync_len = 6,
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.vsync_len = 1,
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.right_margin = 50,
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.left_margin = 38,
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.lower_margin = 3,
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.upper_margin = 17,
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},
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.width = 65, /* ~6.50 cm */
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.height = 49, /* ~4.87 cm */
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.tim2 = TIM2_IPC,
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.cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1),
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.bpp = 16,
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.caps = CLCD_CAP_565,
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};
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static struct clcd_panel nspire_classic_lcd_panel = {
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.mode = {
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.name = "Grayscale LCD",
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.refresh = 60,
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.xres = 320,
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.yres = 240,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.vmode = FB_VMODE_NONINTERLACED,
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.pixclock = 1,
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.hsync_len = 6,
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.vsync_len = 1,
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.right_margin = 6,
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.left_margin = 6,
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},
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.width = 71, /* 7.11cm */
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.height = 53, /* 5.33cm */
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.tim2 = 0x80007d0,
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.cntl = CNTL_LCDMONO8,
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.bpp = 8,
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.grayscale = 1,
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.caps = CLCD_CAP_5551,
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};
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int nspire_clcd_setup(struct clcd_fb *fb)
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{
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struct clcd_panel *panel;
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size_t panel_size;
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const char *type;
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dma_addr_t dma;
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int err;
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BUG_ON(!fb->dev->dev.of_node);
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err = of_property_read_string(fb->dev->dev.of_node, "lcd-type", &type);
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if (err) {
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pr_err("CLCD: Could not find lcd-type property\n");
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return err;
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}
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if (!strcmp(type, "cx")) {
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panel = &nspire_cx_lcd_panel;
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} else if (!strcmp(type, "classic")) {
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panel = &nspire_classic_lcd_panel;
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} else {
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pr_err("CLCD: Unknown lcd-type %s\n", type);
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return -EINVAL;
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}
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panel_size = ((panel->mode.xres * panel->mode.yres) * panel->bpp) / 8;
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panel_size = ALIGN(panel_size, PAGE_SIZE);
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fb->fb.screen_base = dma_alloc_wc(&fb->dev->dev, panel_size, &dma,
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GFP_KERNEL);
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if (!fb->fb.screen_base) {
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pr_err("CLCD: unable to map framebuffer\n");
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return -ENOMEM;
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}
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fb->fb.fix.smem_start = dma;
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fb->fb.fix.smem_len = panel_size;
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fb->panel = panel;
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return 0;
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}
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int nspire_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
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{
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return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,
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fb->fb.fix.smem_start, fb->fb.fix.smem_len);
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}
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void nspire_clcd_remove(struct clcd_fb *fb)
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{
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dma_free_wc(&fb->dev->dev, fb->fb.fix.smem_len, fb->fb.screen_base,
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fb->fb.fix.smem_start);
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}
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