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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h3600.c (3502B)


      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Support for Compaq iPAQ H3600 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 h3600_lcd_gpio[] = {
     28	{ H3XXX_EGPIO_LCD_ON,	GPIOF_OUT_INIT_LOW,	"LCD power" },
     29	{ H3600_EGPIO_LCD_PCI,	GPIOF_OUT_INIT_LOW,	"LCD control" },
     30	{ H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW,	"LCD 5v" },
     31	{ H3600_EGPIO_LVDD_ON,	GPIOF_OUT_INIT_LOW,	"LCD 9v/-6.5v" },
     32};
     33
     34static bool h3600_lcd_request(void)
     35{
     36	static bool h3600_lcd_ok;
     37	int rc;
     38
     39	if (h3600_lcd_ok)
     40		return true;
     41
     42	rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio));
     43	if (rc)
     44		pr_err("%s: can't request GPIOs\n", __func__);
     45	else
     46		h3600_lcd_ok = true;
     47
     48	return h3600_lcd_ok;
     49}
     50
     51static void h3600_lcd_power(int enable)
     52{
     53	if (!h3600_lcd_request())
     54		return;
     55
     56	gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable);
     57	gpio_direction_output(H3600_EGPIO_LCD_PCI, enable);
     58	gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable);
     59	gpio_direction_output(H3600_EGPIO_LVDD_ON, enable);
     60}
     61
     62static const struct sa1100fb_rgb h3600_rgb_16 = {
     63	.red	= { .offset = 12, .length = 4, },
     64	.green	= { .offset = 7,  .length = 4, },
     65	.blue	= { .offset = 1,  .length = 4, },
     66	.transp	= { .offset = 0,  .length = 0, },
     67};
     68
     69static struct sa1100fb_mach_info h3600_lcd_info = {
     70	.pixclock	= 174757, 	.bpp		= 16,
     71	.xres		= 320,		.yres		= 240,
     72
     73	.hsync_len	= 3,		.vsync_len	= 3,
     74	.left_margin	= 12,		.upper_margin	= 10,
     75	.right_margin	= 17,		.lower_margin	= 1,
     76
     77	.cmap_static	= 1,
     78
     79	.lccr0		= LCCR0_Color | LCCR0_Sngl | LCCR0_Act,
     80	.lccr3		= LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2),
     81
     82	.rgb[RGB_16] = &h3600_rgb_16,
     83
     84	.lcd_power = h3600_lcd_power,
     85};
     86
     87
     88static void __init h3600_map_io(void)
     89{
     90	h3xxx_map_io();
     91}
     92
     93/*
     94 * This turns the IRDA power on or off on the Compaq H3600
     95 */
     96static struct gpio h3600_irda_gpio[] = {
     97	{ H3600_EGPIO_IR_ON,	GPIOF_OUT_INIT_LOW, "IrDA power" },
     98	{ H3600_EGPIO_IR_FSEL,	GPIOF_OUT_INIT_LOW, "IrDA fsel" },
     99};
    100
    101static int h3600_irda_set_power(struct device *dev, unsigned int state)
    102{
    103	gpio_set_value(H3600_EGPIO_IR_ON, state);
    104	return 0;
    105}
    106
    107static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
    108{
    109	gpio_set_value(H3600_EGPIO_IR_FSEL, !(speed < 4000000));
    110}
    111
    112static int h3600_irda_startup(struct device *dev)
    113{
    114	return gpio_request_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
    115}
    116
    117static void h3600_irda_shutdown(struct device *dev)
    118{
    119	return gpio_free_array(h3600_irda_gpio, sizeof(h3600_irda_gpio));
    120}
    121
    122static struct irda_platform_data h3600_irda_data = {
    123	.set_power	= h3600_irda_set_power,
    124	.set_speed	= h3600_irda_set_speed,
    125	.startup	= h3600_irda_startup,
    126	.shutdown	= h3600_irda_shutdown,
    127};
    128
    129static void __init h3600_mach_init(void)
    130{
    131	h3xxx_mach_init();
    132
    133	sa11x0_register_lcd(&h3600_lcd_info);
    134	sa11x0_register_irda(&h3600_irda_data);
    135}
    136
    137MACHINE_START(H3600, "Compaq iPAQ H3600")
    138	.atag_offset	= 0x100,
    139	.map_io		= h3600_map_io,
    140	.nr_irqs	= SA1100_NR_IRQS,
    141	.init_irq	= sa1100_init_irq,
    142	.init_time	= sa1100_timer_init,
    143	.init_machine	= h3600_mach_init,
    144	.init_late	= sa11x0_init_late,
    145	.restart	= sa11x0_restart,
    146MACHINE_END
    147