iic_anx9804.c

static int i2cB_clock( void )
{
	int sample = 0;

	sunxi_lcd_delay_us(5);
	IIC_SCLB_HIGH();
	sunxi_lcd_delay_us(5);
	IIC_SCLB_LOW();
	return (sample);
}

inline void IIC_SCLB_HIGH(void)
{
	sunxi_lcd_gpio_set_direction(0, LCD_GPIO_SCLB, 0);
}

inline void IIC_SDAB_LOW(void)
{
	sunxi_lcd_gpio_set_direction(0, LCD_GPIO_SDAB, 1);
	sunxi_lcd_gpio_set_value(0, LCD_GPIO_SDAB, 0);
}

000000000001dc48 <i2cB_clock>:
   1dc48:	a9be7bfd 	stp	x29, x30, [sp,#-32]!
   1dc4c:	910003fd 	mov	x29, sp
   1dc50:	f9000bf3 	str	x19, [sp,#16]
   1dc54:	aa1e03e0 	mov	x0, x30
   1dc58:	90000013 	adrp	x19, 0 <disp_sys_store>
   1dc5c:	94000000 	bl	0 <_mcount>
   1dc60:	528000a0 	mov	w0, #0x5                   	// #5
   1dc64:	94000000 	bl	17e08 <sunxi_lcd_delay_us>
   1dc68:	f9400260 	ldr	x0, [x19]
   1dc6c:	91001000 	add	x0, x0, #0x4
   1dc70:	b9400000 	ldr	w0, [x0]
   1dc74:	d5033d9f 	dsb	ld
   1dc78:	d5033e9f 	dsb	st
   1dc7c:	f9400261 	ldr	x1, [x19]
   1dc80:	121d7000 	and	w0, w0, #0xfffffff8
   1dc84:	91001021 	add	x1, x1, #0x4
   1dc88:	b9000020 	str	w0, [x1]
   1dc8c:	528000a0 	mov	w0, #0x5                   	// #5
   1dc90:	94000000 	bl	17e08 <sunxi_lcd_delay_us>
   1dc94:	f9400260 	ldr	x0, [x19]
   1dc98:	91001000 	add	x0, x0, #0x4
   1dc9c:	b9400000 	ldr	w0, [x0]
   1dca0:	d5033d9f 	dsb	ld
   1dca4:	121d7000 	and	w0, w0, #0xfffffff8
   1dca8:	d5033e9f 	dsb	st
   1dcac:	f9400261 	ldr	x1, [x19]
   1dcb0:	32000000 	orr	w0, w0, #0x1
   1dcb4:	91001022 	add	x2, x1, #0x4
   1dcb8:	b9000040 	str	w0, [x2]
   1dcbc:	91004021 	add	x1, x1, #0x10
   1dcc0:	b9400021 	ldr	w1, [x1]
   1dcc4:	d5033d9f 	dsb	ld
   1dcc8:	d5033e9f 	dsb	st
   1dccc:	f9400260 	ldr	x0, [x19]
   1dcd0:	12177821 	and	w1, w1, #0xfffffeff
   1dcd4:	91004000 	add	x0, x0, #0x10
   1dcd8:	b9000001 	str	w1, [x0]
   1dcdc:	52800000 	mov	w0, #0x0                   	// #0
   1dce0:	f9400bf3 	ldr	x19, [sp,#16]
   1dce4:	a8c27bfd 	ldp	x29, x30, [sp],#32
   1dce8:	d65f03c0 	ret