Skip to main content

Browse the archive

Revision c9cc8e771cb62e495765793e4b7d06016ae1b525 authored by Linus Torvalds on 30 January 2007, 16:29:05 UTC, committed by Linus Torvalds on 30 January 2007, 16:29:05 UTC 
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
 
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4117/1: S3C2412: Fix writel() usage in selection code
  [ARM] 4111/1: Allow VFP to work with thread migration on SMP
  [ARM] 4112/1: Only ioremap to supersections if DOMAIN_IO is zero
  [ARM] 4106/1: S3C2410: typo fixes in register definitions
  [ARM] 4102/1: Allow for PHYS_OFFSET on any valid 2MiB address
  [ARM] Fix AMBA serial drivers for non-first serial ports
  [ARM] 4100/1: iop3xx: fix cpu mask for iop333
  [ARM] Update mach-types
  [ARM] Fix show_mem() for discontigmem
  [ARM] 4096/1: S3C24XX: change return code form s3c2410_gpio_getcfg()
  [ARM] 4095/1: S3C24XX: Fix GPIO set for Bank A
  [ARM] 4092/1: i.MX/MX1 CPU Frequency scaling latency definition
  [ARM] 4089/1: AT91: GPIO wake IRQ cleanup
  [ARM] 4088/1: AT91: Unbalanced IRQ in serial driver suspend/resume
  [ARM] 4087/1: AT91: CPU reset for SAM9x processors
  [ARM] 4086/1: AT91: Whitespace cleanup
  [ARM] 4085/1: AT91: Header fixes.
  [ARM] 4084/1: Remove CONFIG_DEBUG_WAITQ
2 parent s 59df323 + b9d1902
Raw File
bt455.h 
/*
 *	linux/drivers/video/bt455.h
 *
 *	Copyright 2003  Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
 *
 *	This file is subject to the terms and conditions of the GNU General
 *	Public License. See the file COPYING in the main directory of this
 *	archive for more details.
 */
#include <linux/types.h>
#include <asm/system.h>

/*
 * Bt455 byte-wide registers, 32-bit aligned.
 */
struct bt455_regs {
	volatile u8 addr_cmap;
	u8 pad0[3];
	volatile u8 addr_cmap_data;
	u8 pad1[3];
	volatile u8 addr_clr;
	u8 pad2[3];
	volatile u8 addr_ovly;
	u8 pad3[3];
};

static inline void bt455_select_reg(struct bt455_regs *regs, int ir)
{
	mb();
	regs->addr_cmap = ir & 0x0f;
}

/*
 * Read/write to a Bt455 color map register.
 */
static inline void bt455_read_cmap_entry(struct bt455_regs *regs, int cr,
					 u8* red, u8* green, u8* blue)
{
	bt455_select_reg(regs, cr);
	mb();
	*red = regs->addr_cmap_data & 0x0f;
	rmb();
	*green = regs->addr_cmap_data & 0x0f;
	rmb();
	*blue = regs->addr_cmap_data & 0x0f;
}

static inline void bt455_write_cmap_entry(struct bt455_regs *regs, int cr,
					  u8 red, u8 green, u8 blue)
{
	bt455_select_reg(regs, cr);
	wmb();
	regs->addr_cmap_data = red & 0x0f;
	wmb();
	regs->addr_cmap_data = green & 0x0f;
	wmb();
	regs->addr_cmap_data = blue & 0x0f;
}

static inline void bt455_write_ovly_entry(struct bt455_regs *regs, int cr,
					  u8 red, u8 green, u8 blue)
{
	bt455_select_reg(regs, cr);
	wmb();
	regs->addr_ovly = red & 0x0f;
	wmb();
	regs->addr_ovly = green & 0x0f;
	wmb();
	regs->addr_ovly = blue & 0x0f;
}

static inline void bt455_set_cursor(struct bt455_regs *regs)
{
	mb();
	regs->addr_ovly = 0x0f;
	wmb();
	regs->addr_ovly = 0x0f;
	wmb();
	regs->addr_ovly = 0x0f;
}

static inline void bt455_erase_cursor(struct bt455_regs *regs)
{
	/* bt455_write_cmap_entry(regs, 8, 0x00, 0x00, 0x00); */
	/* bt455_write_cmap_entry(regs, 9, 0x00, 0x00, 0x00); */
	bt455_write_ovly_entry(regs, 8, 0x03, 0x03, 0x03);
	bt455_write_ovly_entry(regs, 9, 0x07, 0x07, 0x07);

	wmb();
	regs->addr_ovly = 0x09;
	wmb();
	regs->addr_ovly = 0x09;
	wmb();
	regs->addr_ovly = 0x09;
}
back to top