/*
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* * Copyright 2000-2009
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* * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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* *
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* * SPDX-License-Identifier: GPL-2.0+
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* */
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#include <common.h>
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#include <asm/io.h>
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#include <physical_key.h>
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#include <sys_config.h>
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#include <fdt_support.h>
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#include <console.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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__weak int axp_probe_key(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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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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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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if (ints & ADC0_DATA_PENDING) {
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key = sunxi_key_base->data0 & 0x3f;
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if (!key) {
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key = -1;
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}
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}
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} else if (ints & ADC0_DATA_PENDING) {
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key = sunxi_key_base->data0 & 0x3f;
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if (!key) {
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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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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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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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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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sunxi_key_init();
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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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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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