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[ARM] 3572/1: netX: framebuffer driver for Hilscher netX

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Patch from Sascha Hauer

This patch adds framebuffer support for Hilscher's netX network
processors.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Sascha Hauer 2006-06-19 13:30:58 +01:00 committed by Russell King
parent ab76fb13d7
commit 3095faf529
2 changed files with 138 additions and 0 deletions
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114
arch/arm/mach-netx/fb.c Normal file
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/*
* arch/arm/mach-netx/fb.c
*
* Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/device.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
#include <asm/arch/netx-regs.h>
#include <asm/arch/hardware.h>
struct clk {};
static struct clk fb_clk;
static struct clcd_panel *netx_panel;
void netx_clcd_enable(struct clcd_fb *fb)
{
}
int netx_clcd_setup(struct clcd_fb *fb)
{
dma_addr_t dma;
fb->panel = netx_panel;
fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, 1024*1024,
&dma, GFP_KERNEL);
if (!fb->fb.screen_base) {
printk(KERN_ERR "CLCD: unable to map framebuffer\n");
return -ENOMEM;
}
fb->fb.fix.smem_start = dma;
fb->fb.fix.smem_len = 1024*1024;
return 0;
}
int netx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
{
return dma_mmap_writecombine(&fb->dev->dev, vma,
fb->fb.screen_base,
fb->fb.fix.smem_start,
fb->fb.fix.smem_len);
}
void netx_clcd_remove(struct clcd_fb *fb)
{
dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len,
fb->fb.screen_base, fb->fb.fix.smem_start);
}
void clk_disable(struct clk *clk)
{
}
int clk_set_rate(struct clk *clk, unsigned long rate)
{
return 0;
}
int clk_enable(struct clk *clk)
{
return 0;
}
struct clk *clk_get(struct device *dev, const char *id)
{
return &fb_clk;
}
void clk_put(struct clk *clk)
{
}
static struct amba_device fb_device = {
.dev = {
.bus_id = "fb",
.coherent_dma_mask = ~0,
},
.res = {
.start = 0x00104000,
.end = 0x00104fff,
.flags = IORESOURCE_MEM,
},
.irq = { NETX_IRQ_LCD, NO_IRQ },
.periphid = 0x10112400,
};
int netx_fb_init(struct clcd_board *board, struct clcd_panel *panel)
{
netx_panel = panel;
fb_device.dev.platform_data = board;
return amba_device_register(&fb_device, &iomem_resource);
}

24
arch/arm/mach-netx/fb.h Normal file
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/*
* arch/arm/mach-netx/fb.h
*
* Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
void netx_clcd_enable(struct clcd_fb *fb);
int netx_clcd_setup(struct clcd_fb *fb);
int netx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma);
void netx_clcd_remove(struct clcd_fb *fb);
int netx_fb_init(struct clcd_board *board, struct clcd_panel *panel);