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fb.c

/*
 * 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 <linux/err.h>
#include <linux/gfp.h>

#include <asm/irq.h>

#include <mach/netx-regs.h>
#include <mach/hardware.h>

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 dev && strcmp(dev_name(dev), "fb") == 0 ? NULL : ERR_PTR(-ENOENT);
}

void clk_put(struct clk *clk)
{
}

static struct amba_device fb_device = {
      .dev        = {
            .init_name = "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);
}

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