cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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h3100.c (3251B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Support for Compaq iPAQ H3100 handheld computer
      4 *
      5 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
      6 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
      7 */
      8
      9#include <linux/init.h>
     10#include <linux/kernel.h>
     11#include <linux/gpio.h>
     12
     13#include <video/sa1100fb.h>
     14
     15#include <asm/mach-types.h>
     16#include <asm/mach/arch.h>
     17#include <linux/platform_data/irda-sa11x0.h>
     18
     19#include <mach/h3xxx.h>
     20#include <mach/irqs.h>
     21
     22#include "generic.h"
     23
     24/*
     25 * helper for sa1100fb
     26 */
     27static struct gpio h3100_lcd_gpio[] = {
     28	{ H3100_GPIO_LCD_3V_ON, GPIOF_OUT_INIT_LOW, "LCD 3V" },
     29	{ H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD ON" },
     30};
     31
     32static bool h3100_lcd_request(void)
     33{
     34	static bool h3100_lcd_ok;
     35	int rc;
     36
     37	if (h3100_lcd_ok)
     38		return true;
     39
     40	rc = gpio_request_array(h3100_lcd_gpio, ARRAY_SIZE(h3100_lcd_gpio));
     41	if (rc)
     42		pr_err("%s: can't request GPIOs\n", __func__);
     43	else
     44		h3100_lcd_ok = true;
     45
     46	return h3100_lcd_ok;
     47}
     48
     49static void h3100_lcd_power(int enable)
     50{
     51	if (!h3100_lcd_request())
     52		return;
     53
     54	gpio_set_value(H3100_GPIO_LCD_3V_ON, enable);
     55	gpio_set_value(H3XXX_EGPIO_LCD_ON, enable);
     56}
     57
     58static struct sa1100fb_mach_info h3100_lcd_info = {
     59	.pixclock	= 406977, 	.bpp		= 4,
     60	.xres		= 320,		.yres		= 240,
     61
     62	.hsync_len	= 26,		.vsync_len	= 41,
     63	.left_margin	= 4,		.upper_margin	= 0,
     64	.right_margin	= 4,		.lower_margin	= 0,
     65
     66	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
     67	.cmap_greyscale	= 1,
     68	.cmap_inverse	= 1,
     69
     70	.lccr0		= LCCR0_Mono | LCCR0_4PixMono | LCCR0_Sngl | LCCR0_Pas,
     71	.lccr3		= LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
     72
     73	.lcd_power = h3100_lcd_power,
     74};
     75
     76static void __init h3100_map_io(void)
     77{
     78	h3xxx_map_io();
     79
     80	/* Older bootldrs put GPIO2-9 in alternate mode on the
     81	   assumption that they are used for video */
     82	GAFR &= ~0x000001fb;
     83}
     84
     85/*
     86 * This turns the IRDA power on or off on the Compaq H3100
     87 */
     88static struct gpio h3100_irda_gpio[] = {
     89	{ H3100_GPIO_IR_ON,	GPIOF_OUT_INIT_LOW, "IrDA power" },
     90	{ H3100_GPIO_IR_FSEL,	GPIOF_OUT_INIT_LOW, "IrDA fsel" },
     91};
     92
     93static int h3100_irda_set_power(struct device *dev, unsigned int state)
     94{
     95	gpio_set_value(H3100_GPIO_IR_ON, state);
     96	return 0;
     97}
     98
     99static void h3100_irda_set_speed(struct device *dev, unsigned int speed)
    100{
    101	gpio_set_value(H3100_GPIO_IR_FSEL, !(speed < 4000000));
    102}
    103
    104static int h3100_irda_startup(struct device *dev)
    105{
    106	return gpio_request_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
    107}
    108
    109static void h3100_irda_shutdown(struct device *dev)
    110{
    111	return gpio_free_array(h3100_irda_gpio, sizeof(h3100_irda_gpio));
    112}
    113
    114static struct irda_platform_data h3100_irda_data = {
    115	.set_power	= h3100_irda_set_power,
    116	.set_speed	= h3100_irda_set_speed,
    117	.startup	= h3100_irda_startup,
    118	.shutdown	= h3100_irda_shutdown,
    119};
    120
    121static void __init h3100_mach_init(void)
    122{
    123	h3xxx_mach_init();
    124
    125	sa11x0_register_pcmcia(-1, NULL);
    126	sa11x0_register_lcd(&h3100_lcd_info);
    127	sa11x0_register_irda(&h3100_irda_data);
    128}
    129
    130MACHINE_START(H3100, "Compaq iPAQ H3100")
    131	.atag_offset	= 0x100,
    132	.map_io		= h3100_map_io,
    133	.nr_irqs	= SA1100_NR_IRQS,
    134	.init_irq	= sa1100_init_irq,
    135	.init_time	= sa1100_timer_init,
    136	.init_machine	= h3100_mach_init,
    137	.init_late	= sa11x0_init_late,
    138	.restart	= sa11x0_restart,
    139MACHINE_END
    140