Commit ca6d73f9 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

video: fbdev: remove dead old CLPS711x LCD support driver 



Since commit c86f5173 ("ARM: clps711x: Switch to MULTIPLATFORM")
ARCH_CLPS711X depends on ARCH_MULTIPLATFORM to be enabled so the old
CLPS711x LCD support driver (enabled by the FB_CLPS711X_OLD config
option) can't be selected any longer. Remove all FB_CLPS711XX_OLD
code as it has been dead for over 2 years now. Please note that the
new CLPS711x LCD support driver (enabled by the FB_CLPS711X config
option) is still available in the kernel tree.

Reviewed-by: default avatarAlexander Shiyan <shc_work@mail.ru>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
parent 64f83a81

drivers/video/fbdev/Kconfig

+0 −7
Original line number Diff line number Diff line
@@ -8,12 +8,6 @@ config FB_CMDLINE 
config FB_NOTIFY

	bool



config FB_CLPS711X_OLD

	tristate

	select FB_CFB_FILLRECT

	select FB_CFB_COPYAREA

	select FB_CFB_IMAGEBLIT



menuconfig FB

	tristate "Support for frame buffer devices"

	select FB_CMDLINE
@@ -338,7 +332,6 @@ config FB_ACORN 
config FB_CLPS711X

	tristate "CLPS711X LCD support"

	depends on FB && (ARCH_CLPS711X || COMPILE_TEST)

	select FB_CLPS711X_OLD if ARCH_CLPS711X && !ARCH_MULTIPLATFORM

	select BACKLIGHT_LCD_SUPPORT

	select FB_MODE_HELPERS

	select FB_SYS_FILLRECT

drivers/video/fbdev/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -14,7 +14,6 @@ obj-$(CONFIG_FB_WMT_GE_ROPS) += wmt_ge_rops.o 
obj-$(CONFIG_FB_AMIGA)            += amifb.o c2p_planar.o

obj-$(CONFIG_FB_ARC)              += arcfb.o

obj-$(CONFIG_FB_CLPS711X)	  += clps711x-fb.o

obj-$(CONFIG_FB_CLPS711X_OLD)	  += clps711xfb.o

obj-$(CONFIG_FB_CYBER2000)        += cyber2000fb.o

obj-$(CONFIG_FB_GRVGA)            += grvga.o

obj-$(CONFIG_FB_PM2)              += pm2fb.o

drivers/video/fbdev/clps711xfb.c

deleted100644 → 0
+0 −314
Original line number Diff line number Diff line 
/*

 *  linux/drivers/video/clps711xfb.c

 *

 *  Copyright (C) 2000-2001 Deep Blue Solutions Ltd.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * 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

 *

 *  Framebuffer driver for the CLPS7111 and EP7212 processors.

 */

#include <linux/mm.h>

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/slab.h>

#include <linux/fb.h>

#include <linux/init.h>

#include <linux/delay.h>

#include <linux/platform_device.h>



#include <mach/hardware.h>

#include <asm/mach-types.h>

#include <linux/uaccess.h>



struct fb_info	*cfb;



#define CMAP_MAX_SIZE	16



/*

 * LCD AC Prescale.  This comes from the LCD panel manufacturers specifications.

 * This determines how many clocks + 1 of CL1 before the M signal toggles.

 * The number of lines on the display must not be divisible by this number.

 */

static unsigned int lcd_ac_prescale = 13;



/*

 *    Set a single color register. Return != 0 for invalid regno.

 */

static int

clps7111fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,

		     u_int transp, struct fb_info *info)

{

	unsigned int level, mask, shift, pal;



	if (regno >= (1 << info->var.bits_per_pixel))

		return 1;



	/* gray = 0.30*R + 0.58*G + 0.11*B */

	level = (red * 77 + green * 151 + blue * 28) >> 20;



	/*

	 * On an LCD, a high value is dark, while a low value is light. 

	 * So we invert the level.

	 *

	 * This isn't true on all machines, so we only do it on EDB7211.

	 *  --rmk

	 */

	if (machine_is_edb7211()) {

		level = 15 - level;

	}



	shift = 4 * (regno & 7);

	level <<= shift;

	mask  = 15 << shift;

	level &= mask;



	regno = regno < 8 ? PALLSW : PALMSW;



	pal = clps_readl(regno);

	pal = (pal & ~mask) | level;

	clps_writel(pal, regno);



	return 0;

}



/*

 * Validate the purposed mode.

 */	

static int

clps7111fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)

{

	var->transp.msb_right	= 0;

	var->transp.offset	= 0;

	var->transp.length	= 0;

	var->red.msb_right	= 0;

	var->red.offset		= 0;

	var->red.length		= var->bits_per_pixel;

	var->green		= var->red;

	var->blue		= var->red;



	if (var->bits_per_pixel > 4) 

		return -EINVAL;



	return 0;

}



/*

 * Set the hardware state.

 */ 

static int 

clps7111fb_set_par(struct fb_info *info)

{

	unsigned int lcdcon, syscon, pixclock;



	switch (info->var.bits_per_pixel) {

	case 1:

		info->fix.visual = FB_VISUAL_MONO01;

		break;

	case 2:

		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;

		break;

	case 4:

		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;

		break;

	}



	info->fix.line_length = info->var.xres_virtual * info->var.bits_per_pixel / 8;



	lcdcon = (info->var.xres_virtual * info->var.yres_virtual * info->var.bits_per_pixel) / 128 - 1;

	lcdcon |= ((info->var.xres_virtual / 16) - 1) << 13;

	lcdcon |= lcd_ac_prescale << 25;



	/*

	 * Calculate pixel prescale value from the pixclock.  This is:

	 *  36.864MHz / pixclock_mhz - 1.

	 * However, pixclock is in picoseconds, so this ends up being:

	 *  36864000 * pixclock_ps / 10^12 - 1

	 * and this will overflow the 32-bit math.  We perform this as

	 * (9 * 4096000 == 36864000):

	 *  pixclock_ps * 9 * (4096000 / 10^12) - 1

	 */

	pixclock = 9 * info->var.pixclock / 244140 - 1;

	lcdcon |= pixclock << 19;



	if (info->var.bits_per_pixel == 4)

		lcdcon |= LCDCON_GSMD;

	if (info->var.bits_per_pixel >= 2)

		lcdcon |= LCDCON_GSEN;



	/*

	 * LCDCON must only be changed while the LCD is disabled

	 */

	syscon = clps_readl(SYSCON1);

	clps_writel(syscon & ~SYSCON1_LCDEN, SYSCON1);

	clps_writel(lcdcon, LCDCON);

	clps_writel(syscon | SYSCON1_LCDEN, SYSCON1);

	return 0;

}



static int clps7111fb_blank(int blank, struct fb_info *info)

{

	/* Enable/Disable LCD controller. */

	if (blank)

		clps_writel(clps_readl(SYSCON1) & ~SYSCON1_LCDEN, SYSCON1);

	else

		clps_writel(clps_readl(SYSCON1) | SYSCON1_LCDEN, SYSCON1);



	return 0;

}



static struct fb_ops clps7111fb_ops = {

	.owner		= THIS_MODULE,

	.fb_check_var	= clps7111fb_check_var,

	.fb_set_par	= clps7111fb_set_par,

	.fb_setcolreg	= clps7111fb_setcolreg,

	.fb_blank	= clps7111fb_blank,

	.fb_fillrect	= cfb_fillrect,

	.fb_copyarea	= cfb_copyarea,

	.fb_imageblit	= cfb_imageblit,

};



static void clps711x_guess_lcd_params(struct fb_info *info)

{

	unsigned int lcdcon, syscon, size;

	unsigned long phys_base = PAGE_OFFSET;

	void *virt_base = (void *)PAGE_OFFSET;



	info->var.xres_virtual	 = 640;

	info->var.yres_virtual	 = 240;

	info->var.bits_per_pixel = 4;

	info->var.activate	 = FB_ACTIVATE_NOW;

	info->var.height	 = -1;

	info->var.width		 = -1;

	info->var.pixclock	 = 93006; /* 10.752MHz pixel clock */



	/*

	 * If the LCD controller is already running, decode the values

	 * in LCDCON to xres/yres/bpp/pixclock/acprescale

	 */

	syscon = clps_readl(SYSCON1);

	if (syscon & SYSCON1_LCDEN) {

		lcdcon = clps_readl(LCDCON);



		/*

		 * Decode GSMD and GSEN bits to bits per pixel

		 */

		switch (lcdcon & (LCDCON_GSMD | LCDCON_GSEN)) {

		case LCDCON_GSMD | LCDCON_GSEN:

			info->var.bits_per_pixel = 4;

			break;



		case LCDCON_GSEN:

			info->var.bits_per_pixel = 2;

			break;



		default:

			info->var.bits_per_pixel = 1;

			break;

		}



		/*

		 * Decode xres/yres

		 */

		info->var.xres_virtual = (((lcdcon >> 13) & 0x3f) + 1) * 16;

		info->var.yres_virtual = (((lcdcon & 0x1fff) + 1) * 128) /

					  (info->var.xres_virtual *

					   info->var.bits_per_pixel);



		/*

		 * Calculate pixclock

		 */

		info->var.pixclock = (((lcdcon >> 19) & 0x3f) + 1) * 244140 / 9;



		/*

		 * Grab AC prescale

		 */

		lcd_ac_prescale = (lcdcon >> 25) & 0x1f;

	}



	info->var.xres = info->var.xres_virtual;

	info->var.yres = info->var.yres_virtual;

	info->var.grayscale = info->var.bits_per_pixel > 1;



	size = info->var.xres * info->var.yres * info->var.bits_per_pixel / 8;



	/*

	 * Might be worth checking to see if we can use the on-board

	 * RAM if size here...

	 * CLPS7110 - no on-board SRAM

	 * EP7212   - 38400 bytes

	 */

	if (size <= 38400) {

		printk(KERN_INFO "CLPS711xFB: could use on-board SRAM?\n");

	}



	if ((syscon & SYSCON1_LCDEN) == 0) {

		/*

		 * The display isn't running.  Ensure that

		 * the display memory is empty.

		 */

		memset(virt_base, 0, size);

	}



	info->screen_base    = virt_base;

	info->fix.smem_start = phys_base;

	info->fix.smem_len   = PAGE_ALIGN(size);

	info->fix.type       = FB_TYPE_PACKED_PIXELS;

}



static int clps711x_fb_probe(struct platform_device *pdev)

{

	int err = -ENOMEM;



	if (fb_get_options("clps711xfb", NULL))

		return -ENODEV;



	cfb = kzalloc(sizeof(*cfb), GFP_KERNEL);

	if (!cfb)

		goto out;



	strcpy(cfb->fix.id, "clps711x");



	cfb->fbops		= &clps7111fb_ops;

	cfb->flags		= FBINFO_DEFAULT;



	clps711x_guess_lcd_params(cfb);



	fb_alloc_cmap(&cfb->cmap, CMAP_MAX_SIZE, 0);



	err = register_framebuffer(cfb);



out:	return err;

}



static int clps711x_fb_remove(struct platform_device *pdev)

{

	unregister_framebuffer(cfb);

	kfree(cfb);



	return 0;

}



static struct platform_driver clps711x_fb_driver = {

	.driver	= {

		.name	= "video-clps711x",

	},

	.probe	= clps711x_fb_probe,

	.remove	= clps711x_fb_remove,

};

module_platform_driver(clps711x_fb_driver);



MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");

MODULE_DESCRIPTION("CLPS711X framebuffer driver");

MODULE_LICENSE("GPL");

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