Unverified Commit 0b003749 authored by Paul Burton's avatar Paul Burton
Browse files

MIPS: malta: Use img-ascii-lcd driver for LCD display 



Remove the Malta display platform code in favour of probing the
img-ascii-lcd driver via device tree. This reduces the amount of
platform code & the img-ascii-lcd driver offers us advantages in terms
of code sharing with other boards & functionality such as changing the
displayed message via sysfs. Defconfigs are untouched because the driver
already defaults y on when CONFIG_MIPS_MALTA=y.

Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21182/
Cc: linux-mips@linux-mips.org
parent 3cd64083

arch/mips/boot/dts/mti/malta.dts

+5 −0
Original line number Diff line number Diff line
@@ -87,6 +87,11 @@ 
		reg = <0x1f000000 0x1000>;

		native-endian;



		lcd@410 {

			compatible = "mti,malta-lcd";

			offset = <0x410>;

		};



		reboot {

			compatible = "syscon-reboot";

			regmap = <&fpga_regs>;

arch/mips/mti-malta/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -6,7 +6,6 @@ 
# Copyright (C) 2008 Wind River Systems, Inc.

#   written by Ralf Baechle <ralf@linux-mips.org>

#

obj-y				+= malta-display.o

obj-y				+= malta-dt.o

obj-y				+= malta-dtshim.o

obj-y				+= malta-init.o

arch/mips/mti-malta/malta-display.c

deleted100644 → 0
+0 −56
Original line number Diff line number Diff line 
/*

 * 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.

 *

 * Display routines for display messages in MIPS boards ascii display.

 *

 * Copyright (C) 1999,2000,2012  MIPS Technologies, Inc.

 * All rights reserved.

 * Authors: Carsten Langgaard <carstenl@mips.com>

 *          Steven J. Hill <sjhill@mips.com>

 */

#include <linux/compiler.h>

#include <linux/timer.h>

#include <linux/io.h>



#include <asm/mips-boards/generic.h>



extern const char display_string[];

static unsigned int display_count;

static unsigned int max_display_count;



void mips_display_message(const char *str)

{

	static unsigned int __iomem *display = NULL;

	int i;



	if (unlikely(display == NULL))

		display = ioremap(ASCII_DISPLAY_POS_BASE, 16*sizeof(int));



	for (i = 0; i <= 14; i += 2) {

		if (*str)

			__raw_writel(*str++, display + i);

		else

			__raw_writel(' ', display + i);

	}

}



static void scroll_display_message(struct timer_list *unused);

static DEFINE_TIMER(mips_scroll_timer, scroll_display_message);



static void scroll_display_message(struct timer_list *unused)

{

	mips_display_message(&display_string[display_count++]);

	if (display_count == max_display_count)

		display_count = 0;



	mod_timer(&mips_scroll_timer, jiffies + HZ);

}



void mips_scroll_message(void)

{

	del_timer_sync(&mips_scroll_timer);

	max_display_count = strlen(display_string) + 1 - 8;

	mod_timer(&mips_scroll_timer, jiffies + 1);

}

arch/mips/mti-malta/malta-init.c

+0 −3
Original line number Diff line number Diff line
@@ -118,8 +118,6 @@ phys_addr_t mips_cpc_default_phys_base(void) 


void __init prom_init(void)

{

	mips_display_message("LINUX");



	/*

	 * early setup of _pcictrl_bonito so that we can determine

	 * the system controller on a CORE_EMUL board
@@ -277,7 +275,6 @@ mips_pci_controller: 


	default:

		/* Unknown system controller */

		mips_display_message("SC Error");

		while (1);	/* We die here... */

	}

	board_nmi_handler_setup = mips_nmi_setup;

arch/mips/mti-malta/malta-setup.c

+0 −2
Original line number Diff line number Diff line
@@ -81,8 +81,6 @@ const char *get_system_type(void) 
	return "MIPS Malta";

}



const char display_string[] = "	       LINUX ON MALTA	    ";



#ifdef CONFIG_BLK_DEV_FD

static void __init fd_activate(void)

{

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