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alistair23-linux/arch/arm/mach-pxa/littleton.c
Russell King e7b3dc7ef1 [NET] smc91x: Make smc91x use IRQ resource trigger flags 
smc91x is shared between many different platforms.  Each platform needs
to specify the interrupt type, and in some cases the irq type depends
on more than just the build configuration - it depends on runtime
checks.

Rather than throwing this code into the SMC_IRQ_FLAGS definition, provide
a way for these flags to be passed via the IRQ resource itself.

Note that IRQF_TRIGGER_* constants are intentionally defined to correspond
with the IORESOURCE_IRQ_* interrupt type flags, in much the same way that
the low bits of PCI iomem resources correspond with the BAR flag bits.

Also provide a way to configure smc91x to read the IRQ flags from the
resource.  Once all platforms have been converted over (signified
by all definitions of SMC_IRQ_FLAGS being -1) SMC_IRQ_FLAGS should
be removed.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
2008-01-28 13:13:19 +00:00

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/*
* linux/arch/arm/mach-pxa/littleton.c
*
* Support for the Marvell Littleton Development Platform.
*
* Author: Jason Chagas (largely modified code)
* Created: Nov 20, 2006
* Copyright: (C) Copyright 2006 Marvell International Ltd.
*
* 2007-11-22 modified to align with latest kernel
* eric miao <eric.miao@marvell.com>
*
* 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
* publishhed by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/mfp-pxa300.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pxafb.h>
#include <asm/arch/ssp.h>
#include <asm/arch/littleton.h>
#include "generic.h"
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
/* Littleton MFP configurations */
static mfp_cfg_t littleton_mfp_cfg[] __initdata = {
/* LCD */
GPIO54_LCD_LDD_0,
GPIO55_LCD_LDD_1,
GPIO56_LCD_LDD_2,
GPIO57_LCD_LDD_3,
GPIO58_LCD_LDD_4,
GPIO59_LCD_LDD_5,
GPIO60_LCD_LDD_6,
GPIO61_LCD_LDD_7,
GPIO62_LCD_LDD_8,
GPIO63_LCD_LDD_9,
GPIO64_LCD_LDD_10,
GPIO65_LCD_LDD_11,
GPIO66_LCD_LDD_12,
GPIO67_LCD_LDD_13,
GPIO68_LCD_LDD_14,
GPIO69_LCD_LDD_15,
GPIO70_LCD_LDD_16,
GPIO71_LCD_LDD_17,
GPIO72_LCD_FCLK,
GPIO73_LCD_LCLK,
GPIO74_LCD_PCLK,
GPIO75_LCD_BIAS,
/* SSP2 */
GPIO25_SSP2_SCLK,
GPIO17_SSP2_FRM,
GPIO27_SSP2_TXD,
/* Debug Ethernet */
GPIO90_GPIO,
};
static struct resource smc91x_resources[] = {
[0] = {
.start = (LITTLETON_ETH_PHYS + 0x300),
.end = (LITTLETON_ETH_PHYS + 0xfffff),
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_GPIO(mfp_to_gpio(MFP_PIN_GPIO90)),
.end = IRQ_GPIO(mfp_to_gpio(MFP_PIN_GPIO90)),
.flags = IORESOURCE_IRQ | IRQF_TRIGGER_FALLING,
}
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = 0,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
};
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULES)
/* use bit 30, 31 as the indicator of command parameter number */
#define CMD0(x) ((0x00000000) | ((x) << 9))
#define CMD1(x, x1) ((0x40000000) | ((x) << 9) | 0x100 | (x1))
#define CMD2(x, x1, x2) ((0x80000000) | ((x) << 18) | 0x20000 |\
((x1) << 9) | 0x100 | (x2))
static uint32_t lcd_panel_reset[] = {
CMD0(0x1), /* reset */
CMD0(0x0), /* nop */
CMD0(0x0), /* nop */
CMD0(0x0), /* nop */
};
static uint32_t lcd_panel_on[] = {
CMD0(0x29), /* Display ON */
CMD2(0xB8, 0xFF, 0xF9), /* Output Control */
CMD0(0x11), /* Sleep out */
CMD1(0xB0, 0x16), /* Wake */
};
static uint32_t lcd_panel_off[] = {
CMD0(0x28), /* Display OFF */
CMD2(0xB8, 0x80, 0x02), /* Output Control */
CMD0(0x10), /* Sleep in */
CMD1(0xB0, 0x00), /* Deep stand by in */
};
static uint32_t lcd_vga_pass_through[] = {
CMD1(0xB0, 0x16),
CMD1(0xBC, 0x80),
CMD1(0xE1, 0x00),
CMD1(0x36, 0x50),
CMD1(0x3B, 0x00),
};
static uint32_t lcd_qvga_pass_through[] = {
CMD1(0xB0, 0x16),
CMD1(0xBC, 0x81),
CMD1(0xE1, 0x00),
CMD1(0x36, 0x50),
CMD1(0x3B, 0x22),
};
static uint32_t lcd_vga_transfer[] = {
CMD1(0xcf, 0x02), /* Blanking period control (1) */
CMD2(0xd0, 0x08, 0x04), /* Blanking period control (2) */
CMD1(0xd1, 0x01), /* CKV timing control on/off */
CMD2(0xd2, 0x14, 0x00), /* CKV 1,2 timing control */
CMD2(0xd3, 0x1a, 0x0f), /* OEV timing control */
CMD2(0xd4, 0x1f, 0xaf), /* ASW timing control (1) */
CMD1(0xd5, 0x14), /* ASW timing control (2) */
CMD0(0x21), /* Invert for normally black display */
CMD0(0x29), /* Display on */
};
static uint32_t lcd_qvga_transfer[] = {
CMD1(0xd6, 0x02), /* Blanking period control (1) */
CMD2(0xd7, 0x08, 0x04), /* Blanking period control (2) */
CMD1(0xd8, 0x01), /* CKV timing control on/off */
CMD2(0xd9, 0x00, 0x08), /* CKV 1,2 timing control */
CMD2(0xde, 0x05, 0x0a), /* OEV timing control */
CMD2(0xdf, 0x0a, 0x19), /* ASW timing control (1) */
CMD1(0xe0, 0x0a), /* ASW timing control (2) */
CMD0(0x21), /* Invert for normally black display */
CMD0(0x29), /* Display on */
};
static uint32_t lcd_panel_config[] = {
CMD2(0xb8, 0xff, 0xf9), /* Output control */
CMD0(0x11), /* sleep out */
CMD1(0xba, 0x01), /* Display mode (1) */
CMD1(0xbb, 0x00), /* Display mode (2) */
CMD1(0x3a, 0x60), /* Display mode 18-bit RGB */
CMD1(0xbf, 0x10), /* Drive system change control */
CMD1(0xb1, 0x56), /* Booster operation setup */
CMD1(0xb2, 0x33), /* Booster mode setup */
CMD1(0xb3, 0x11), /* Booster frequency setup */
CMD1(0xb4, 0x02), /* Op amp/system clock */
CMD1(0xb5, 0x35), /* VCS voltage */
CMD1(0xb6, 0x40), /* VCOM voltage */
CMD1(0xb7, 0x03), /* External display signal */
CMD1(0xbd, 0x00), /* ASW slew rate */
CMD1(0xbe, 0x00), /* Dummy data for QuadData operation */
CMD1(0xc0, 0x11), /* Sleep out FR count (A) */
CMD1(0xc1, 0x11), /* Sleep out FR count (B) */
CMD1(0xc2, 0x11), /* Sleep out FR count (C) */
CMD2(0xc3, 0x20, 0x40), /* Sleep out FR count (D) */
CMD2(0xc4, 0x60, 0xc0), /* Sleep out FR count (E) */
CMD2(0xc5, 0x10, 0x20), /* Sleep out FR count (F) */
CMD1(0xc6, 0xc0), /* Sleep out FR count (G) */
CMD2(0xc7, 0x33, 0x43), /* Gamma 1 fine tuning (1) */
CMD1(0xc8, 0x44), /* Gamma 1 fine tuning (2) */
CMD1(0xc9, 0x33), /* Gamma 1 inclination adjustment */
CMD1(0xca, 0x00), /* Gamma 1 blue offset adjustment */
CMD2(0xec, 0x01, 0xf0), /* Horizontal clock cycles */
};
static void ssp_reconfig(struct ssp_dev *dev, int nparam)
{
static int last_nparam = -1;
/* check if it is necessary to re-config SSP */
if (nparam == last_nparam)
return;
ssp_disable(dev);
ssp_config(dev, (nparam == 2) ? 0x0010058a : 0x00100581, 0x18, 0, 0);
last_nparam = nparam;
}
static void ssp_send_cmd(uint32_t *cmd, int num)
{
static int ssp_initialized;
static struct ssp_dev ssp2;
int i;
if (!ssp_initialized) {
ssp_init(&ssp2, 2, SSP_NO_IRQ);
ssp_initialized = 1;
}
clk_enable(ssp2.ssp->clk);
for (i = 0; i < num; i++, cmd++) {
ssp_reconfig(&ssp2, (*cmd >> 30) & 0x3);
ssp_write_word(&ssp2, *cmd & 0x3fffffff);
/* FIXME: ssp_flush() is mandatory here to work */
ssp_flush(&ssp2);
}
clk_disable(ssp2.ssp->clk);
}
static void littleton_lcd_power(int on, struct fb_var_screeninfo *var)
{
if (on) {
ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_on));
ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_reset));
if (var->xres > 240) {
/* VGA */
ssp_send_cmd(ARRAY_AND_SIZE(lcd_vga_pass_through));
ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_config));
ssp_send_cmd(ARRAY_AND_SIZE(lcd_vga_transfer));
} else {
/* QVGA */
ssp_send_cmd(ARRAY_AND_SIZE(lcd_qvga_pass_through));
ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_config));
ssp_send_cmd(ARRAY_AND_SIZE(lcd_qvga_transfer));
}
} else
ssp_send_cmd(ARRAY_AND_SIZE(lcd_panel_off));
}
static struct pxafb_mode_info tpo_tdo24mtea1_modes[] = {
[0] = {
/* VGA */
.pixclock = 38250,
.xres = 480,
.yres = 640,
.bpp = 16,
.hsync_len = 8,
.left_margin = 8,
.right_margin = 24,
.vsync_len = 2,
.upper_margin = 2,
.lower_margin = 4,
.sync = 0,
},
[1] = {
/* QVGA */
.pixclock = 153000,
.xres = 240,
.yres = 320,
.bpp = 16,
.hsync_len = 8,
.left_margin = 8,
.right_margin = 88,
.vsync_len = 2,
.upper_margin = 2,
.lower_margin = 2,
.sync = 0,
},
};
static struct pxafb_mach_info littleton_lcd_info = {
.modes = tpo_tdo24mtea1_modes,
.num_modes = 2,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_HSP | LCCR3_VSP,
.pxafb_lcd_power = littleton_lcd_power,
};
static void littleton_init_lcd(void)
{
set_pxa_fb_info(&littleton_lcd_info);
}
#else
static inline void littleton_init_lcd(void) {};
#endif /* CONFIG_FB_PXA || CONFIG_FB_PXA_MODULES */
static void __init littleton_init(void)
{
/* initialize MFP configurations */
pxa3xx_mfp_config(ARRAY_AND_SIZE(littleton_mfp_cfg));
/*
* Note: we depend bootloader set the correct
* value to MSC register for SMC91x.
*/
platform_device_register(&smc91x_device);
littleton_init_lcd();
}
MACHINE_START(LITTLETON, "Marvell Form Factor Development Platform (aka Littleton)")
.phys_io = 0x40000000,
.boot_params = 0xa0000100,
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
.map_io = pxa_map_io,
.init_irq = pxa3xx_init_irq,
.timer = &pxa_timer,
.init_machine = littleton_init,
MACHINE_END
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