1 /* 2 * MiniPC board late initialisation, based on uboot-xburst and xburst-tools. 3 * 4 * Copyright (C) 2000-2009 Wolfgang Denk, DENX Software Engineering, <wd@denx.de> 5 * Copyright (C) 2005-2006 Ingenic Semiconductor, <jlwei@ingenic.cn> 6 * Copyright (C) Xiangfu Liu <xiangfu.z@gmail.com> 7 * Copyright (C) 2015, 2016 Paul Boddie <paul@boddie.org.uk> 8 * 9 * This program is free software: you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation, either version 3 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program. If not, see <http://www.gnu.org/licenses/>. 21 */ 22 23 #include "board.h" 24 #include "minipc.h" 25 26 /* Later initialisation functions. */ 27 28 void gpio_init2() 29 { 30 /* LED enable. */ 31 32 __gpio_as_output(GPIO_LED_EN); 33 __gpio_set_pin(GPIO_LED_EN); 34 35 __harb_usb0_uhc(); 36 __gpio_as_emc(); 37 __gpio_as_dma(); 38 39 /* Initialise LCD pins. */ 40 41 __gpio_as_lcd_master(); 42 43 /* Initialise MSC pins. */ 44 45 __gpio_as_msc(); 46 47 /* Initialise other pins. */ 48 49 unsigned short i; 50 51 for (i = 0; i < GPIO_KEYIN_COUNT; i++) { 52 __gpio_as_input(GPIO_KEYIN_BASE + i); 53 __gpio_enable_pull(GPIO_KEYIN_BASE + i); 54 } 55 56 for (i = 0; i < GPIO_KEYOUT_COUNT; i++) { 57 __gpio_as_output(GPIO_KEYOUT_BASE + i); 58 __gpio_clear_pin(GPIO_KEYOUT_BASE + i); 59 } 60 } 61 62 void cpm_init() 63 { 64 __cpm_stop_all(); 65 } 66 67 void rtc_init() 68 { 69 /* NOTE: May only be accessible via I2C. */ 70 } 71 72 /* Timer routines. */ 73 74 unsigned long timestamp; 75 unsigned long lastdec; 76 77 /* 78 * Timer without interrupts. 79 */ 80 81 int timer_init() 82 { 83 __ost_set_clock(TIMER_CHAN, OST_TCSR_CKS_PCLK_256); 84 __ost_set_reload(TIMER_CHAN, TIMER_FDATA); 85 __ost_set_count(TIMER_CHAN, TIMER_FDATA); 86 __ost_enable_channel(TIMER_CHAN); 87 88 __cpm_start_ost(); 89 90 lastdec = TIMER_FDATA; 91 timestamp = 0; 92 93 return 0; 94 } 95 96 /* Timer interrupt activation. */ 97 98 void timer_init_irq() 99 { 100 __ost_enable_interrupt(TIMER_CHAN); 101 /* NOTE: Need flag clearing? */ 102 __intc_unmask_irq(TIMER_CHAN_IRQ); 103 } 104 105 void timer_clear() 106 { 107 __intc_ack_irq(TIMER_CHAN_IRQ); 108 __ost_clear_uf(TIMER_CHAN); 109 } 110 111 /* GPIO interrupt activation. */ 112 113 void gpio_init_irq() 114 { 115 __gpio_as_irq_low_level(GPIO_POWER); 116 __intc_unmask_irq(GPIO_IRQ); 117 } 118 119 int gpio_have_irq(u8 gpio) 120 { 121 return (REG_GPIO_GPFR(gpio / 32) & (1 << (gpio % 32))); 122 } 123 124 /* Board startup detection. */ 125 126 int is_started() 127 { 128 return REG_CPM_MSCR != 0; 129 }