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 static bool h3600_lcd_request(void) 24 { 25 static bool h3600_lcd_ok; 26 int rc; 27 28 if (h3600_lcd_ok) 29 return true; 30 31 rc = gpio_request(H3XXX_EGPIO_LCD_ON, "LCD power"); 32 if (rc) 33 goto out; 34 rc = gpio_direction_output(H3XXX_EGPIO_LCD_ON, 0); 35 if (rc) 36 goto out_free_on; 37 rc = gpio_request(H3600_EGPIO_LCD_PCI, "LCD control"); 38 if (rc) 39 goto out_free_on; 40 rc = gpio_direction_output(H3600_EGPIO_LCD_PCI, 0); 41 if (rc) 42 goto out_free_pci; 43 rc = gpio_request(H3600_EGPIO_LCD_5V_ON, "LCD 5v"); 44 if (rc) 45 goto out_free_pci; 46 rc = gpio_direction_output(H3600_EGPIO_LCD_5V_ON, 0); 47 if (rc) 48 goto out_free_5v_on; 49 rc = gpio_request(H3600_EGPIO_LVDD_ON, "LCD 9v/-6.5v"); 50 if (rc) 51 goto out_free_5v_on; 52 rc = gpio_direction_output(H3600_EGPIO_LVDD_ON, 0); 53 if (rc) 54 goto out_free_lvdd_on; 55 56 goto out; 57 58 out_free_lvdd_on: 59 gpio_free(H3600_EGPIO_LVDD_ON); 60 out_free_5v_on: 61 gpio_free(H3600_EGPIO_LCD_5V_ON); 62 out_free_pci: 63 gpio_free(H3600_EGPIO_LCD_PCI); 64 out_free_on: 65 gpio_free(H3XXX_EGPIO_LCD_ON); 66 out: 67 if (rc) 68 pr_err("%s: can't request GPIOs\n", __func__); 69 else 70 h3600_lcd_ok = true; 71 72 return h3600_lcd_ok; 73 } 74 75 static void h3600_lcd_power(int enable) 76 { 77 if (!h3600_lcd_request()) 78 return; 79 80 gpio_direction_output(H3XXX_EGPIO_LCD_ON, enable); 81 gpio_direction_output(H3600_EGPIO_LCD_PCI, enable); 82 gpio_direction_output(H3600_EGPIO_LCD_5V_ON, enable); 83 gpio_direction_output(H3600_EGPIO_LVDD_ON, enable); 84 } 85 86 static const struct sa1100fb_rgb h3600_rgb_16 = { 87 .red = { .offset = 12, .length = 4, }, 88 .green = { .offset = 7, .length = 4, }, 89 .blue = { .offset = 1, .length = 4, }, 90 .transp = { .offset = 0, .length = 0, }, 91 }; 92 93 static struct sa1100fb_mach_info h3600_lcd_info = { 94 .pixclock = 174757, .bpp = 16, 95 .xres = 320, .yres = 240, 96 97 .hsync_len = 3, .vsync_len = 3, 98 .left_margin = 12, .upper_margin = 10, 99 .right_margin = 17, .lower_margin = 1, 100 101 .cmap_static = 1, 102 103 .lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act, 104 .lccr3 = LCCR3_OutEnH | LCCR3_PixRsEdg | LCCR3_ACBsDiv(2), 105 106 .rgb[RGB_16] = &h3600_rgb_16, 107 108 .lcd_power = h3600_lcd_power, 109 }; 110 111 112 static void __init h3600_map_io(void) 113 { 114 h3xxx_map_io(); 115 } 116 117 static void __init h3600_mach_init(void) 118 { 119 h3xxx_mach_init(); 120 121 sa11x0_register_lcd(&h3600_lcd_info); 122 } 123 124 MACHINE_START(H3600, "Compaq iPAQ H3600") 125 .atag_offset = 0x100, 126 .map_io = h3600_map_io, 127 .nr_irqs = SA1100_NR_IRQS, 128 .init_irq = sa1100_init_irq, 129 .init_time = sa1100_timer_init, 130 .init_machine = h3600_mach_init, 131 .init_late = sa11x0_init_late, 132 .restart = sa11x0_restart, 133 MACHINE_END 134 135