66 строки
1.4 KiB
C
66 строки
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* arch/arm/mach-netx/fb.c
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*
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* Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*/
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/dma-mapping.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/err.h>
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#include <linux/gfp.h>
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#include <asm/irq.h>
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#include <mach/netx-regs.h>
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#include <mach/hardware.h>
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static struct clcd_panel *netx_panel;
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void netx_clcd_enable(struct clcd_fb *fb)
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{
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}
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int netx_clcd_setup(struct clcd_fb *fb)
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{
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dma_addr_t dma;
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fb->panel = netx_panel;
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fb->fb.screen_base = dma_alloc_wc(&fb->dev->dev, 1024 * 1024, &dma,
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GFP_KERNEL);
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if (!fb->fb.screen_base) {
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printk(KERN_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 = 1024*1024;
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return 0;
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}
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int netx_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 netx_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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static AMBA_AHB_DEVICE(fb, "fb", 0, 0x00104000, { NETX_IRQ_LCD }, NULL);
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int netx_fb_init(struct clcd_board *board, struct clcd_panel *panel)
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{
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netx_panel = panel;
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fb_device.dev.platform_data = board;
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return amba_device_register(&fb_device, &iomem_resource);
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}
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