173 lines
6.1 KiB
C
173 lines
6.1 KiB
C
/* pinmux_board_arduino_101.c - Arduino 101 board pinmux driver */
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/*
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* Copyright (c) 2015 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <board.h>
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#include <device.h>
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#include <init.h>
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#include <pinmux.h>
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#include <sys_io.h>
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#include "pinmux/pinmux.h"
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#include <pinmux_quark_mcu.h>
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/*
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* This is the full pinmap that we have available on the board for configuration
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* including the ball position and the various modes that can be set. In the
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* _pinmux_defaults we do not spend any time setting values that are using mode
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* A as the hardware brings up all devices by default in mode A.
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*/
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/* pin, ball, mode A, mode B, mode C */
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/* 0 F02, gpio_0, ain_0, spi_s_cs */ /* IO10 */
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/* 1 G04, gpio_1, ain_1, spi_s_miso */ /* IO12 */
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/* 2 H05, gpio_2, ain_2, spi_s_sck */ /* IO13 */
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/* 3 J06, gpio_3, ain_3, spi_s_mosi */ /* IO11 */
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/* 4 K06, gpio_4, ain_4, NA */
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/* 5 L06, gpio_5, ain_5, NA */
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/* 6 H04, gpio_6, ain_6, NA */
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/* 7 G03, gpio_7, ain_7, NA */
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/* 8 L05, gpio_ss_0, ain_8, uart1_cts */
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/* 9 M05, gpio_ss_1, ain_9, uart1_rts */ /* AD5 */
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/* 10 K05, gpio_ss_2, ain_10 */ /* AD0 */
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/* 11 G01, gpio_ss_3, ain_11 */ /* AD1 */
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/* 12 J04, gpio_ss_4, ain_12 */ /* AD2 */
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/* 13 G02, gpio_ss_5, ain_13 */ /* AD3 */
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/* 14 F01, gpio_ss_6, ain_14 */ /* AD4 */
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/* 15 J05, gpio_ss_7, ain_15 */
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/* 16 L04, gpio_ss_8, ain_16, uart1_txd */ /* IO1 */
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/* 17 M04, gpio_ss_9, ain_17, uart1_rxd */ /* IO0 */
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/* 18 K04, uart0_rx, ain_18, NA */
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/* 19 B02, uart0_tx, gpio_31, NA */
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/* 20 C01, i2c0_scl, NA, NA */
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/* 21 C02, i2c0_sda, NA, NA */
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/* 22 D01, i2c1_scl, NA, NA */
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/* 23 D02, i2c1_sda, NA, NA */
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/* 24 E01, i2c0_ss_sda, NA, NA */
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/* 25 E02, i2c0_ss_scl, NA, NA */
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/* 26 B03, i2c1_ss_sda, NA, NA */
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/* 27 A03, i2c1_ss_scl, NA, NA */
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/* 28 C03, spi0_ss_miso, NA, NA */
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/* 29 E03, spi0_ss_mosi, NA, NA */
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/* 30 D03, spi0_ss_sck, NA, NA */
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/* 31 D04, spi0_ss_cs0, NA, NA */
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/* 32 C04, spi0_ss_cs1, NA, NA */
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/* 33 B04, spi0_ss_cs2, gpio_29, NA */
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/* 34 A04, spi0_ss_cs3, gpio_30, NA */
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/* 35 B05, spi1_ss_miso, NA, NA */
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/* 36 C05, spi1_ss_mosi, NA, NA */
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/* 37 D05, spi1_ss_sck, NA, NA */
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/* 38 E05, spi1_ss_cs0, NA, NA */
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/* 39 E04, spi1_ss_cs1, NA, NA */
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/* 40 A06, spi1_ss_cs2, uart0_cts, NA */
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/* 41 B06, spi1_ss_cs3, uart0_rts, NA */
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/* 42 C06, gpio_8, spi1_m_sck, NA */ /* IO13 */
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/* 43 D06, gpio_9, spi1_m_miso, NA */ /* IO12 */
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/* 44 E06, gpio_10, spi1_m_mosi, NA */ /* IO11 */
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/* 45 D07, gpio_11, spi1_m_cs0, NA */
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/* 46 C07, gpio_12, spi1_m_cs1, NA */
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/* 47 B07, gpio_13, spi1_m_cs2, NA */
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/* 48 A07, gpio_14, spi1_m_cs3, NA */
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/* 49 B08, gpio_15, i2s_rxd, NA */ /* IO5 */
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/* 50 A08, gpio_16, i2s_rscki, NA */ /* IO8 */
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/* 51 B09, gpio_17, i2s_rws, NA */ /* IO3 */
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/* 52 A09, gpio_18, i2s_tsck, NA */ /* IO2 */
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/* 53 C09, gpio_19, i2s_twsi, NA */ /* IO4 */
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/* 54 D09, gpio_20, i2s_txd, NA */ /* IO7 */
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/* 55 D08, gpio_21, spi0_m_sck, NA */
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/* 56 E07, gpio_22, spi0_m_miso, NA */
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/* 57 E09, gpio_23, spi0_m_mosi, NA */
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/* 58 E08, gpio_24, spi0_m_cs0, NA */
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/* 59 A10, gpio_25, spi0_m_cs1, NA */
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/* 60 B10, gpio_26, spi0_m_cs2, NA */
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/* 61 C10, gpio_27, spi0_m_cs3, NA */
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/* 62 D10, gpio_28, NA, NA */
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/* 63 E10, gpio_ss_10, pwm_0, NA */ /* IO3 */
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/* 64 D11, gpio_ss_11, pwm_1, NA */ /* IO5 */
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/* 65 C11, gpio_ss_12, pwm_2, NA */ /* IO6 */
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/* 66 B11, gpio_ss_13, pwm_3, NA */ /* IO9 */
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/* 67 D12, gpio_ss_14, clkout_32khz, NA */
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/* 68 C12, gpio_ss_15, clkout_16mhz, NA */
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/* Note:
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* 1. I2C pins on the shield are connected to i2c0_ss_sda and i2c_0_ss_scl,
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* which are on the sensor subsystem. They are also tied to AD4 and AD5.
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* Therefore, to use I2C, pin 9 (ain_9) and pin 14 (ain_14) both need to be set
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* to PINMUX_FUNC_B, so they will not interfere with I2C operations.
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* Also, there is no internal pull-up on I2c bus, and thus external
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* pull-up resistors are needed.
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* 2. IO3/PWM0 is connected to pin 51 and 63.
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* 3. IO5/PWM1 is connected to pin 49 and 64.
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*/
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/*
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* On the QUARK_SE platform there are a minimum of 69 pins that can be possibly
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* set. This would be a total of 5 registers to store the configuration as per
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* the bit description from above
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*/
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#define PINMUX_MAX_REGISTERS 5
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static void _pinmux_defaults(u32_t base)
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{
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u32_t mux_config[PINMUX_MAX_REGISTERS] = { 0, 0, 0, 0, 0 };
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int i = 0;
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#if !defined(CONFIG_SPI_1) && !defined(CONFIG_SPI_CS_GPIO)
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PIN_CONFIG(mux_config, 0, PINMUX_FUNC_B);
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#endif
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PIN_CONFIG(mux_config, 1, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 2, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 3, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 4, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 5, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 7, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 8, PINMUX_FUNC_C);
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PIN_CONFIG(mux_config, 9, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 14, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 16, PINMUX_FUNC_C);
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PIN_CONFIG(mux_config, 17, PINMUX_FUNC_C);
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PIN_CONFIG(mux_config, 40, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 41, PINMUX_FUNC_B);
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#ifdef CONFIG_SPI_1
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PIN_CONFIG(mux_config, 42, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 43, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 44, PINMUX_FUNC_B);
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#ifndef CONFIG_SPI_CS_GPIO
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PIN_CONFIG(mux_config, 45, PINMUX_FUNC_B);
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#endif
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#endif
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PIN_CONFIG(mux_config, 55, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 56, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 57, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 63, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 64, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 65, PINMUX_FUNC_B);
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PIN_CONFIG(mux_config, 66, PINMUX_FUNC_B);
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for (i = 0; i < PINMUX_MAX_REGISTERS; i++) {
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sys_write32(mux_config[i], PINMUX_SELECT_REGISTER(base, i));
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}
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}
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static inline void _pinmux_pullups(u32_t base_address)
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{
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_quark_mcu_set_mux(base_address + PINMUX_PULLUP_OFFSET, 104,
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PINMUX_PULLUP_ENABLE);
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}
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static int pinmux_initialize(struct device *port)
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{
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ARG_UNUSED(port);
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_pinmux_defaults(PINMUX_BASE_ADDR);
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_pinmux_pullups(PINMUX_BASE_ADDR);
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return 0;
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}
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SYS_INIT(pinmux_initialize, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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