170 lines
3.4 KiB
C
Executable File
170 lines
3.4 KiB
C
Executable File
/*
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* (C) Copyright 2007-2013
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* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
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* Jerry Wang <wangflord@allwinnertech.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/key.h>
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#include <asm/arch/sys_proto.h>
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#include <sys_config.h>
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#include <power/sunxi/pmu.h>
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#include <fdt_support.h>
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__attribute__((section(".data")))
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static uint32_t keyen_flag = 1;
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__weak int sunxi_key_clock_open(void)
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{
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return 0;
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}
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__weak int sunxi_key_clock_close(void)
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{
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return 0;
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}
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int sunxi_key_init(void)
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{
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struct sunxi_lradc *sunxi_key_base = (struct sunxi_lradc *)SUNXI_KEYADC_BASE;
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uint reg_val = 0;
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int nodeoffset;
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sunxi_key_clock_open();
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reg_val = sunxi_key_base->ctrl;
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reg_val &= ~((7<<1) | (0xffU << 24));
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reg_val |= LRADC_HOLD_EN;
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reg_val |= LRADC_EN;
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sunxi_key_base->ctrl = reg_val;
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/* disable all key irq */
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sunxi_key_base->intc = 0;
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sunxi_key_base->ints = 0x1f1f;
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nodeoffset = fdt_path_offset(working_fdt,FDT_PATH_KEY_DETECT);
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if(nodeoffset > 0)
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{
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fdt_getprop_u32(working_fdt,nodeoffset,"keyen_flag",&keyen_flag);
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}
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return 0;
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}
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int sunxi_key_exit(void)
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{
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struct sunxi_lradc *sunxi_key_base = (struct sunxi_lradc *)SUNXI_KEYADC_BASE;
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sunxi_key_base->ctrl = 0;
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/* disable all key irq */
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sunxi_key_base->intc = 0;
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sunxi_key_base->ints = 0x1f1f;
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sunxi_key_clock_close();
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return 0;
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}
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int sunxi_key_read(void)
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{
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u32 ints;
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int key = -1;
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struct sunxi_lradc *sunxi_key_base = (struct sunxi_lradc *)SUNXI_KEYADC_BASE;
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if(!keyen_flag)
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{
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return -1;
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}
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ints = sunxi_key_base->ints;
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/* clear the pending data */
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sunxi_key_base->ints |= (ints & 0x1f);
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/* if there is already data pending,
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read it */
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if( ints & ADC0_KEYDOWN_PENDING)
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{
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if(ints & ADC0_DATA_PENDING)
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{
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key = sunxi_key_base->data0 & 0x3f;
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if(!key)
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{
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key = -1;
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}
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}
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}
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else if(ints & ADC0_DATA_PENDING)
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{
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key = sunxi_key_base->data0 & 0x3f;
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if(!key)
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{
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key = -1;
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}
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}
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if(key > 0)
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{
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printf("key pressed value=0x%x\n", key);
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}
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return key;
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}
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int do_key_test(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct sunxi_lradc *sunxi_key_base = (struct sunxi_lradc *)SUNXI_KEYADC_BASE;
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u32 power_key = 0;
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int nodeoffset;
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nodeoffset = fdt_path_offset(working_fdt,FDT_PATH_KEY_DETECT);
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if(nodeoffset > 0)
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{
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fdt_getprop_u32(working_fdt,nodeoffset,"keyen_flag",&keyen_flag);
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}
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if(!keyen_flag)
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{
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puts("warnning: not support,please set keyen_flag=1 in sys_config.fex\n");
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return -1;
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}
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puts(" press a key:\n");
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sunxi_key_base->ints = 0x1f1f;
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while(!ctrlc())
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{
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sunxi_key_read();
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power_key = axp_probe_key();
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if(power_key > 0) {
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break;
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}
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}
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return 0;
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}
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U_BOOT_CMD(
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key_test, 1, 0, do_key_test,
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"Test the key value\n",
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""
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);
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