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 18 #include <mach/h3xxx.h> 19 #include <mach/irqs.h> 20 21 #include "generic.h" 22 23 /* 24 * helper for sa1100fb 25 */ 26 static struct gpio h3600_lcd_gpio[] = { 27 { H3XXX_EGPIO_LCD_ON, GPIOF_OUT_INIT_LOW, "LCD power" }, 28 { H3600_EGPIO_LCD_PCI, GPIOF_OUT_INIT_LOW, "LCD control" }, 29 { H3600_EGPIO_LCD_5V_ON, GPIOF_OUT_INIT_LOW, "LCD 5v" }, 30 { H3600_EGPIO_LVDD_ON, GPIOF_OUT_INIT_LOW, "LCD 9v/-6.5v" }, 31 }; 32 33 static bool h3600_lcd_request(void) 34 { 35 static bool h3600_lcd_ok; 36 int rc; 37 38 if (h3600_lcd_ok) 39 return true; 40 41 rc = gpio_request_array(h3600_lcd_gpio, ARRAY_SIZE(h3600_lcd_gpio)); 42 if (rc) 43 pr_err("%s: can't request GPIOs\n", __func__); 44 else 45 h3600_lcd_ok = true; 46 47 return h3600_lcd_ok; 48 } 49 50 static void h3600_lcd_power(int enable) 51 { 52 if (!h3600_lcd_request()) 53 return; 54 55 gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); 56 gpio_direction_output(H3600_EGPIO_LCD_PCI, enable); 57 gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable); 58 gpio_direction_output(H3600_EGPIO_LVDD_ON, enable); 59 } 60 61 static const struct sa1100fb_rgb h3600_rgb_16 = { 62 .red = { .offset = 12, .length = 4, }, 63 .green = { .offset = 7, .length = 4, }, 64 .blue = { .offset = 1, .length = 4, }, 65 .transp = { .offset = 0, .length = 0, }, 66 }; 67 68 static struct sa1100fb_mach_info h3600_lcd_info = { 69 .pixclock = 174757, .bpp = 16, 70 .xres = 320, .yres = 240, 71 72 .hsync_len = 3, .vsync_len = 3, 73 .left_margin = 12, .upper_margin = 10, 74 .right_margin = 17, .lower_margin = 1, 75 76 .cmap_static = 1, 77 78 .lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, 79 .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), 80 81 .rgb[RGB_16] = &h3600_rgb_16, 82 83 .lcd_power = h3600_lcd_power, 84 }; 85 86 87 static void __init h3600_map_io(void) 88 { 89 h3xxx_map_io(); 90 } 91 92 static void __init h3600_mach_init(void) 93 { 94 h3xxx_mach_init(); 95 96 sa11x0_register_lcd(&h3600_lcd_info); 97 } 98 99 MACHINE_START(H3600, "Compaq iPAQ H3600") 100 .atag_offset = 0x100, 101 .map_io = h3600_map_io, 102 .nr_irqs = SA1100_NR_IRQS, 103 .init_irq = sa1100_init_irq, 104 .init_time = sa1100_timer_init, 105 .init_machine = h3600_mach_init, 106 .init_late = sa11x0_init_late, 107 .restart = sa11x0_restart, 108 MACHINE_END 109 110