169 lines
3.7 KiB
C
169 lines
3.7 KiB
C
/*
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* Copyright (c) 2016 Linaro Limited
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <device.h>
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#include <init.h>
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#include <kernel.h>
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#include <drivers/pinmux.h>
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#include <soc.h>
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#include <sys/sys_io.h>
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#include <gpio/gpio_cmsdk_ahb.h>
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#include "pinmux/pinmux.h"
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/**
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* @brief Pinmux driver for ARM MPS2 AN385 Board
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*
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* The ARM MPS2 AN385 Board has 4 GPIO controllers. These controllers
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* are responsible for pin muxing, input/output, pull-up, etc.
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*
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* All GPIO controller pins are exposed via the following sequence of pin
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* numbers:
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* Pins 0 - 15 are for GPIO0
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* Pins 16 - 31 are for GPIO1
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* Pins 32 - 47 are for GPIO2
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* Pins 48 - 51 are for GPIO3
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*
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* For the GPIO controllers configuration ARM MPS2 AN385 Board follows the
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* Arduino compliant pin out.
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*/
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#define CMSDK_AHB_GPIO0_DEV \
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((volatile struct gpio_cmsdk_ahb *)DT_CMSDK_AHB_GPIO0)
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#define CMSDK_AHB_GPIO1_DEV \
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((volatile struct gpio_cmsdk_ahb *)DT_CMSDK_AHB_GPIO1)
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#define CMSDK_AHB_GPIO2_DEV \
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((volatile struct gpio_cmsdk_ahb *)DT_CMSDK_AHB_GPIO2)
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#define CMSDK_AHB_GPIO3_DEV \
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((volatile struct gpio_cmsdk_ahb *)DT_CMSDK_AHB_GPIO3)
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/*
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* This is the mapping from the ARM MPS2 AN385 Board pins to GPIO
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* controllers.
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*
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* D0 : EXT_0
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* D1 : EXT_4
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* D2 : EXT_2
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* D3 : EXT_3
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* D4 : EXT_1
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* D5 : EXT_6
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* D6 : EXT_7
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* D7 : EXT_8
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* D8 : EXT_9
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* D9 : EXT_10
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* D10 : EXT_12
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* D11 : EXT_13
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* D12 : EXT_14
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* D13 : EXT_11
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* D14 : EXT_15
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* D15 : EXT_5
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* D16 : EXT_16
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* D17 : EXT_17
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* D18 : EXT_18
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* D19 : EXT_19
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* D20 : EXT_20
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* D21 : EXT_21
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* D22 : EXT_22
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* D23 : EXT_23
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* D24 : EXT_24
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* D25 : EXT_25
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* D26 : EXT_26
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* D27 : EXT_30
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* D28 : EXT_28
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* D29 : EXT_29
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* D30 : EXT_27
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* D31 : EXT_32
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* D32 : EXT_33
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* D33 : EXT_34
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* D34 : EXT_35
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* D35 : EXT_36
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* D36 : EXT_38
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* D37 : EXT_39
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* D38 : EXT_40
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* D39 : EXT_44
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* D40 : EXT_41
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* D41 : EXT_31
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* D42 : EXT_37
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* D43 : EXT_42
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* D44 : EXT_43
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* D45 : EXT_45
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* D46 : EXT_46
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* D47 : EXT_47
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* D48 : EXT_48
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* D49 : EXT_49
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* D50 : EXT_50
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* D51 : EXT_51
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*
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* UART_3_RX : D0
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* UART_3_TX : D1
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* SPI_3_CS : D10
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* SPI_3_MOSI : D11
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* SPI_3_MISO : D12
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* SPI_3_SCLK : D13
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* I2C_3_SDA : D14
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* I2C_3_SCL : D15
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* UART_4_RX : D26
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* UART_4_TX : D30
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* SPI_4_CS : D36
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* SPI_4_MOSI : D37
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* SPI_4_MISO : D38
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* SPI_4_SCK : D39
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* I2C_4_SDA : D40
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* I2C_4_SCL : D41
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*
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*/
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static void arm_mps2_pinmux_defaults(void)
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{
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u32_t gpio_0 = 0U;
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u32_t gpio_1 = 0U;
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u32_t gpio_2 = 0U;
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/* Set GPIO Alternate Functions */
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gpio_0 = (1<<0) /* Shield 0 UART 3 RXD */
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| (1<<4) /* Shield 0 UART 3 TXD */
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| (1<<5) /* Shield 0 I2C SCL SBCON2 */
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| (1<<15) /* Shield 0 I2C SDA SBCON2 */
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| (1<<11) /* Shield 0 SPI 3 SCK */
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| (1<<12) /* Shield 0 SPI 3 SS */
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| (1<<13) /* Shield 0 SPI 3 MOSI */
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| (1<<14); /* Shield 0 SPI 3 MISO */
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CMSDK_AHB_GPIO0_DEV->altfuncset = gpio_0;
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gpio_1 = (1<<10) /* Shield 1 UART 4 RXD */
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| (1<<14) /* Shield 1 UART 4 TXD */
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| (1<<15) /* Shield 1 I2C SCL SBCON3 */
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| (1<<0) /* ADC SPI 2 SS */
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| (1<<1) /* ADC SPI 2 MISO */
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| (1<<2) /* ADC SPI 2 MOSI */
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| (1<<3) /* ADC SPI 2 SCK */
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| (1<<5) /* USER BUTTON 0 */
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| (1<<6); /* USER BUTTON 1 */
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CMSDK_AHB_GPIO1_DEV->altfuncset = gpio_1;
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gpio_2 = (1<<9) /* Shield 1 I2C SDA SBCON3 */
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| (1<<6) /* Shield 1 SPI 4 SS */
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| (1<<7) /* Shield 1 SPI 4 MOSI */
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| (1<<8) /* Shield 1 SPI 4 MISO */
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| (1<<12); /* Shield 1 SPI 4 SCK */
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CMSDK_AHB_GPIO2_DEV->altfuncset = gpio_2;
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}
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static int arm_mps2_pinmux_init(struct device *port)
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{
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ARG_UNUSED(port);
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arm_mps2_pinmux_defaults();
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return 0;
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}
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SYS_INIT(arm_mps2_pinmux_init, PRE_KERNEL_1,
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CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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