80 lines
2.1 KiB
C
Executable File
80 lines
2.1 KiB
C
Executable File
#include "pm_types.h"
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#include "pm_i.h"
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/*
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*********************************************************************************************************
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* MEM gpio INITIALISE
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*
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* Description: mem gpio initialise.
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*
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* Arguments : none.
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*
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* Returns : 0/-1;
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*********************************************************************************************************
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*/
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__s32 mem_gpio_save(struct gpio_state *pgpio_state)
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{
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int i=0;
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/*save all the gpio reg*/
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for(i=0; i<(GPIO_REG_LENGTH); i++){
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pgpio_state->gpio_reg_back[i] = *(volatile __u32 *)(IO_ADDRESS(SUNXI_PIO_PBASE) + i*0x04);
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}
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return 0;
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}
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/*
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*********************************************************************************************************
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* MEM gpio INITIALISE
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*
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* Description: mem gpio initialise.
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*
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* Arguments : none.
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*
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* Returns : 0/-1;
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*********************************************************************************************************
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*/
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__s32 mem_gpio_restore(struct gpio_state *pgpio_state)
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{
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int i=0;
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/*restore all the gpio reg*/
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for(i=0; i<(GPIO_REG_LENGTH); i++){
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*(volatile __u32 *)(IO_ADDRESS(SUNXI_PIO_PBASE) + i*0x04) = pgpio_state->gpio_reg_back[i];
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}
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#ifdef CONFIG_ARCH_SUN8IW1P1
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/* restore watch-dog registers, to avoid IC's bug */
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*(volatile __u32 *)IO_ADDRESS(0x1C20CD8) = 0;
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*(volatile __u32 *)IO_ADDRESS(0x1C20CF8) = 0;
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*(volatile __u32 *)IO_ADDRESS(0x1C20D18) = 0;
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#endif
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return 0;
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}
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#if defined(CONFIG_ARCH_SUN9IW1P1) || defined(CONFIG_ARCH_SUN8IW6P1) \
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|| defined(CONFIG_ARCH_SUN8IW8P1) || defined(CONFIG_ARCH_SUN8IW9P1)
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void config_gpio_clk(__u32 mmu_flag)
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{
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static __u32 gpio_clk_inited = 0;
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__u32 gpio_apb0_gating_reg = 0;
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if(0 == gpio_clk_inited){
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if(mmu_flag){
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gpio_apb0_gating_reg = (__u32)(IO_ADDRESS(AW_CCM_MOD_BASE + AW_CCM_PIO_BUS_GATE_REG_OFFSET));
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}else{
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gpio_apb0_gating_reg = (__u32)((AW_CCM_MOD_BASE + AW_CCM_PIO_BUS_GATE_REG_OFFSET));
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}
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//first: release gpio gating,then u can opererate gpio.
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writel(readl(gpio_apb0_gating_reg) | (0x1 << 5), gpio_apb0_gating_reg);
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gpio_clk_inited = 1;
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}
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return;
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}
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#endif
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