cregit-Linux how code gets into the kernel

Release 4.11 arch/arm/mach-pxa/idp.c

/*
 *  linux/arch/arm/mach-pxa/idp.c
 *
 *  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.
 *
 *  Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
 *
 *  2001-09-13: Cliff Brake <cbrake@accelent.com>
 *              Initial code
 *
 *  2005-02-15: Cliff Brake <cliff.brake@gmail.com>
 *              <http://www.vibren.com> <http://bec-systems.com>
 *              Updated for 2.6 kernel
 *
 */

#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/fb.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include "pxa25x.h"
#include "idp.h"
#include <linux/platform_data/video-pxafb.h>
#include <mach/bitfield.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/smc91x.h>

#include "generic.h"
#include "devices.h"

/* TODO:
 * - add pxa2xx_audio_ops_t device structure
 * - Ethernet interrupt
 */


static unsigned long idp_pin_config[] __initdata = {
	/* LCD */
	GPIOxx_LCD_DSTN_16BPP,

	/* BTUART */
	GPIO42_BTUART_RXD,
	GPIO43_BTUART_TXD,
	GPIO44_BTUART_CTS,
	GPIO45_BTUART_RTS,

	/* STUART */
	GPIO46_STUART_RXD,
	GPIO47_STUART_TXD,

	/* MMC */
	GPIO6_MMC_CLK,
	GPIO8_MMC_CS0,

	/* Ethernet */
	GPIO33_nCS_5,	/* Ethernet CS */
	GPIO4_GPIO,	/* Ethernet IRQ */
};


static struct resource smc91x_resources[] = {
	[0] = {
		.start	= (IDP_ETH_PHYS + 0x300),
		.end	= (IDP_ETH_PHYS + 0xfffff),
		.flags	= IORESOURCE_MEM,
        },
	[1] = {
		.start	= PXA_GPIO_TO_IRQ(4),
		.end	= PXA_GPIO_TO_IRQ(4),
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
        }
};


static struct smc91x_platdata smc91x_platdata = {
	.flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
		 SMC91X_USE_DMA | SMC91X_NOWAIT,
	.pxa_u16_align4 = true,
};


static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
	.dev.platform_data = &smc91x_platdata,
};


static void idp_backlight_power(int on) { if (on) { IDP_CPLD_LCD |= (1<<1); } else { IDP_CPLD_LCD &= ~(1<<1); } }

Contributors

PersonTokensPropCommitsCommitProp
Cliff Brake3497.14%150.00%
Nico Pitre12.86%150.00%
Total35100.00%2100.00%


static void idp_vlcd(int on) { if (on) { IDP_CPLD_LCD |= (1<<2); } else { IDP_CPLD_LCD &= ~(1<<2); } }

Contributors

PersonTokensPropCommitsCommitProp
Cliff Brake3497.14%150.00%
Nico Pitre12.86%150.00%
Total35100.00%2100.00%


static void idp_lcd_power(int on, struct fb_var_screeninfo *var) { if (on) { IDP_CPLD_LCD |= (1<<0); } else { IDP_CPLD_LCD &= ~(1<<0); } /* call idp_vlcd for now as core driver does not support * both power and vlcd hooks. Note, this is not technically * the correct sequence, but seems to work. Disclaimer: * this may eventually damage the display. */ idp_vlcd(on); }

Contributors

PersonTokensPropCommitsCommitProp
Cliff Brake3882.61%133.33%
Richard Purdie510.87%133.33%
Nico Pitre36.52%133.33%
Total46100.00%3100.00%

static struct pxafb_mode_info sharp_lm8v31_mode = { .pixclock = 270000, .xres = 640, .yres = 480, .bpp = 16, .hsync_len = 1, .left_margin = 3, .right_margin = 3, .vsync_len = 1, .upper_margin = 0, .lower_margin = 0, .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, .cmap_greyscale = 0, }; static struct pxafb_mach_info sharp_lm8v31 = { .modes = &sharp_lm8v31_mode, .num_modes = 1, .cmap_inverse = 0, .cmap_static = 0, .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL | LCD_AC_BIAS_FREQ(255), .pxafb_backlight_power = &idp_backlight_power, .pxafb_lcd_power = &idp_lcd_power }; static struct pxamci_platform_data idp_mci_platform_data = { .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, .gpio_card_detect = -1, .gpio_card_ro = -1, .gpio_power = -1, };
static void __init idp_init(void) { printk("idp_init()\n"); pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config)); pxa_set_ffuart_info(NULL); pxa_set_btuart_info(NULL); pxa_set_stuart_info(NULL); platform_device_register(&smc91x_device); //platform_device_register(&mst_audio_device); pxa_set_fb_info(NULL, &sharp_lm8v31); pxa_set_mci_info(&idp_mci_platform_data); }

Contributors

PersonTokensPropCommitsCommitProp
Cliff Brake1831.03%116.67%
Russell King1831.03%233.33%
Nico Pitre1322.41%116.67%
Eric Miao813.79%116.67%
David Brownell11.72%116.67%
Total58100.00%6100.00%

static struct map_desc idp_io_desc[] __initdata = { { .virtual = IDP_COREVOLT_VIRT, .pfn = __phys_to_pfn(IDP_COREVOLT_PHYS), .length = IDP_COREVOLT_SIZE, .type = MT_DEVICE }, { .virtual = IDP_CPLD_VIRT, .pfn = __phys_to_pfn(IDP_CPLD_PHYS), .length = IDP_CPLD_SIZE, .type = MT_DEVICE } };
static void __init idp_map_io(void) { pxa25x_map_io(); iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc)); }

Contributors

PersonTokensPropCommitsCommitProp
Nico Pitre1672.73%133.33%
Russell King522.73%133.33%
Marek Vašut14.55%133.33%
Total22100.00%3100.00%

/* LEDs */ #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) struct idp_led { struct led_classdev cdev; u8 mask; }; /* * The triggers lines up below will only be used if the * LED triggers are compiled in. */ static const struct { const char *name; const char *trigger; } idp_leds[] = { { "idp:green", "heartbeat", }, { "idp:red", "cpu0", }, };
static void idp_led_set(struct led_classdev *cdev, enum led_brightness b) { struct idp_led *led = container_of(cdev, struct idp_led, cdev); u32 reg = IDP_CPLD_LED_CONTROL; if (b != LED_OFF) reg &= ~led->mask; else reg |= led->mask; IDP_CPLD_LED_CONTROL = reg; }

Contributors

PersonTokensPropCommitsCommitProp
Bryan Wu59100.00%1100.00%
Total59100.00%1100.00%


static enum led_brightness idp_led_get(struct led_classdev *cdev) { struct idp_led *led = container_of(cdev, struct idp_led, cdev); return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL; }

Contributors

PersonTokensPropCommitsCommitProp
Bryan Wu40100.00%1100.00%
Total40100.00%1100.00%


static int __init idp_leds_init(void) { int i; if (!machine_is_pxa_idp()) return -ENODEV; for (i = 0; i < ARRAY_SIZE(idp_leds); i++) { struct idp_led *led; led = kzalloc(sizeof(*led), GFP_KERNEL); if (!led) break; led->cdev.name = idp_leds[i].name; led->cdev.brightness_set = idp_led_set; led->cdev.brightness_get = idp_led_get; led->cdev.default_trigger = idp_leds[i].trigger; if (i == 0) led->mask = IDP_HB_LED; else led->mask = IDP_BUSY_LED; if (led_classdev_register(NULL, &led->cdev) < 0) { kfree(led); break; } } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Bryan Wu150100.00%1100.00%
Total150100.00%1100.00%

/* * Since we may have triggers on any subsystem, defer registration * until after subsystem_init. */ fs_initcall(idp_leds_init); #endif MACHINE_START(PXA_IDP, "Vibren PXA255 IDP") /* Maintainer: Vibren Technologies */ .map_io = idp_map_io, .nr_irqs = PXA_NR_IRQS, .init_irq = pxa25x_init_irq, .handle_irq = pxa25x_handle_irq, .init_time = pxa_timer_init, .init_machine = idp_init, .restart = pxa_restart, MACHINE_END

Overall Contributors

PersonTokensPropCommitsCommitProp
Cliff Brake32732.77%12.78%
Bryan Wu31431.46%12.78%
Nico Pitre11011.02%25.56%
Russell King616.11%1130.56%
Eric Miao606.01%616.67%
Arnd Bergmann343.41%513.89%
Deepak Saxena303.01%12.78%
Richard Purdie252.51%12.78%
Robert Jarzmik232.30%25.56%
Rob Herring50.50%12.78%
Thomas Gleixner30.30%12.78%
Haojian Zhuang20.20%12.78%
Stephen Warren20.20%12.78%
David Brownell10.10%12.78%
Marek Vašut10.10%12.78%
Total998100.00%36100.00%
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