2019-12-27 17:23:08 +00:00
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// Copyright 2018 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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// This file contains pin mapping information that is specific to the Allwinner
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// A20 model.
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package allwinner
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import (
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"strings"
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2021-09-01 19:34:31 +00:00
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"periph.io/x/conn/v3/pin"
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"periph.io/x/host/v3/sysfs"
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2019-12-27 17:23:08 +00:00
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)
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// mappingA20 describes the mapping of the A20 processor gpios to their
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// alternate functions.
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//
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// It omits the in & out functions which are available on all gpio.
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//
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// The mapping comes from the datasheet page 241:
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// http://dl.linux-sunxi.org/A20/A20%20User%20Manual%202013-03-22.pdf
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var mappingA20 = map[string][5]pin.Func{
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"PA0": {"ERXD3", "SPI1_CS0", "UART2_RTS", "GRXD3"},
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"PA1": {"ERXD2", "SPI1_CLK", "UART2_CTS", "GRXD2"},
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"PA2": {"ERXD1", "SPI1_MOSI", "UART2_TX", "GRXD1"},
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"PA3": {"ERXD0", "SPI1_MISO", "UART2_RX", "GRXD0"},
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"PA4": {"ETXD3", "SPI1_CS1", "", "GTXD3"},
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"PA5": {"ETXD2", "SPI3_CS0", "", "GTXD2"},
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"PA6": {"ETXD1", "SPI3_CLK", "", "GTXD1"},
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"PA7": {"ETXD0", "SPI3_MOSI", "", "GTXD0"},
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"PA8": {"ERXCK", "SPI3_MISO", "", "CRXCK"},
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"PA9": {"ERXERR", "SPI3_CS1", "", "GNULL", "I2S1_MCLK"},
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"PA10": {"ERXDV", "", "UART1_TX", "GRXCTL"},
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"PA11": {"EMDC", "", "UART1_RX", "GMDC"},
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"PA12": {"EMDIO", "UART6_TX", "UART1_RTS", "GMDIO"},
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"PA13": {"ETXEN", "UART6_RX", "UART1_CTS", "GTXCTL"},
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"PA14": {"ETXCK", "UART7_TX", "UART1_DTR", "GNULL", "I2S1_SCK"},
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"PA15": {"ECRS", "UART7_RX", "UART1_DSR", "GTXCK", "I2S1_WS"},
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"PA16": {"ECOL", "CAN_TX", "UART1_DCD", "GCLKIN", "I2S1_DOUT"},
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"PA17": {"ETXERR", "CAN_RX", "UART1_RI", "GNULL", "I2S1_DIN"},
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"PB0": {"I2C0_SCL"},
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"PB1": {"I2C0_SDA"},
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"PB2": {"PWM0"},
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"PB3": {"IR0_TX", "", "SPDIF_MCLK", "", "STANBYWFI"},
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"PB4": {"IR0_RX"},
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"PB5": {"I2S0_MCLK", "AC97_MCLK"},
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"PB6": {"I2S0_SCK", "AC97_SCK"},
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"PB7": {"I2S0_WS", "AC97_SYNC"},
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"PB8": {"I2S0_DOUT0", "AC97_DOUT"},
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"PB9": {"I2S0_DOUT1"},
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"PB10": {"I2S0_DOUT2"},
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"PB11": {"I2S0_DOUT3"},
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"PB12": {"I2S0_DIN", "AC97_DI", "SPDIF_DI"},
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"PB13": {"SPI2_CS1", "", "SPDIF_DO"},
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"PB14": {"SPI2_CS0", "JTAG0_TMS"},
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"PB15": {"SPI2_CLK", "JTAG0_TCK"},
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"PB16": {"SPI2_MOSI", "JTAG0_TDO"},
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"PB17": {"SPI2_MISO", "JTAG0_TDI"},
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"PB18": {"I2C1_SCL"},
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"PB19": {"I2C1_SDA"},
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"PB20": {"I2C2_SCL"},
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"PB21": {"I2C2_SDA"},
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"PB22": {"UART0_TX", "IR1_TX"},
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"PB23": {"UART0_RX", "IR1_RX"},
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"PC0": {"NWE#", "SPI0_MOSI"},
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"PC1": {"NALE", "SPI0_MISO"},
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"PC2": {"NCLE", "SPI0_CLK"},
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"PC3": {"NCE1"},
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"PC4": {"NCE0"},
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"PC5": {"NRE#"},
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"PC6": {"NRB0", "SDC2_CMD"},
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"PC7": {"NRB1", "SDC2_CLK"},
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"PC8": {"NDQ0", "SDC2_D0"},
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"PC9": {"NDQ1", "SDC2_D1"},
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"PC10": {"NDQ2", "SDC2_D2"},
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"PC11": {"NDQ3", "SDC2_D3"},
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"PC12": {"NDQ4"},
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"PC13": {"NDQ5"},
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"PC14": {"NDQ6"},
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"PC15": {"NDQ7"},
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"PC16": {"NWP"},
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"PC17": {"NCE2"},
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"PC18": {"NCE3"},
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"PC19": {"NCE4", "SPI2_CS0", "", "", "PC_EINT12"},
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"PC20": {"NCE5", "SPI2_CLK", "", "", "PC_EINT13"},
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"PC21": {"NCE6", "SPI2_MOSI", "", "", "PC_EINT14"},
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"PC22": {"NCE7", "SPI2_MISO", "", "", "PC_EINT15"},
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"PC23": {"", "SPI2_CS0"},
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"PC24": {"NDQS"},
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"PD0": {"LCD0_D0", "LVDS0_VP0"},
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"PD1": {"LCD0_D1", "LVDS0_VN0"},
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"PD2": {"LCD0_D2", "LVDS0_VP1"},
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"PD3": {"LCD0_D3", "LVDS0_VN1"},
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"PD4": {"LCD0_D4", "LVDS0_VP2"},
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"PD5": {"LCD0_D5", "LVDS0_VN2"},
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"PD6": {"LCD0_D6", "LVDS0_VPC"},
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"PD7": {"LCD0_D7", "LVDS0_VNC"},
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"PD8": {"LCD0_D8", "LVDS0_VP3"},
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"PD9": {"LCD0_D9", "LVDS0_VN3"},
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"PD10": {"LCD0_D10", "LVDS1_VP0"},
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"PD11": {"LCD0_D11", "LVDS1_VN0"},
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"PD12": {"LCD0_D12", "LVDS1_VP1"},
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"PD13": {"LCD0_D13", "LVDS1_VN1"},
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"PD14": {"LCD0_D14", "LVDS1_VP2"},
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"PD15": {"LCD0_D15", "LVDS1_VN2"},
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"PD16": {"LCD0_D16", "LVDS1_VPC"},
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"PD17": {"LCD0_D17", "LVDS1_VNC"},
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"PD18": {"LCD0_D18", "LVDS1_VP3"},
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"PD19": {"LCD0_D19", "LVDS1_VN3"},
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"PD20": {"LCD0_D20", "CSI1_MCLK"},
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"PD21": {"LCD0_D21", "SMC_VPPEN"},
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"PD22": {"LCD0_D22", "SMC_VPPPP"},
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"PD23": {"LCD0_D23", "SMC_DET"},
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"PD24": {"LCD0_CLK", "SMC_VCCEN"},
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"PD25": {"LCD0_DE", "SMC_RST"},
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"PD26": {"LCD0_HSYNC", "SMC_SLK"},
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"PD27": {"LCD0_VSYNC", "SMC_SDA"},
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"PE0": {"TS0_CLK", "CSI0_PCLK"},
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"PE1": {"TS0_ERR", "CSI0_MCLK"},
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"PE2": {"TS0_SYNC", "CSI0_HSYNC"},
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"PE3": {"TS0_DLVD", "CSI0_VSYNC"},
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"PE4": {"TS0_D0", "CSI0_D0"},
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"PE5": {"TS0_D1", "CSI0_D1"},
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"PE6": {"TS0_D2", "CSI0_D2"},
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"PE7": {"TS0_D3", "CSI0_D3"},
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"PE8": {"TS0_D4", "CSI0_D4"},
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"PE9": {"TS0_D5", "CSI0_D5"},
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"PE10": {"TS0_D6", "CSI0_D6"},
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"PE11": {"TS0_D7", "CSI0_D7"},
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"PF0": {"SDC0_D1", "", "JTAG1_TMS"},
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"PF1": {"SDC0_D0", "", "JTAG1_TDI"},
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"PF2": {"SDC0_CLK", "", "UART0_TX"},
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"PF3": {"SDC0_CMD", "", "JTAG1_TDO"},
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"PF4": {"SDC0_D3", "", "UART0_RX"},
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"PF5": {"SDC0_D2", "", "JTAG1_TCK"},
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"PG0": {"TS1_CLK", "CSI1_PCLK", "SDC1_CMD"},
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"PG1": {"TS1_ERR", "CSI1_MCLK", "SDC1_CLK"},
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"PG2": {"TS1_SYNC", "CSI1_HSYNC", "SDC1_D0"},
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"PG3": {"TS1_DVLD", "CSI1_VSYNC", "SDC1_D1"},
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"PG4": {"TS1_D0", "CSI1_D0", "SDC1_D2", "CSI0_D8"},
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"PG5": {"TS1_D1", "CSI1_D1", "SDC1_D3", "CSI0_D9"},
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"PG6": {"TS1_D2", "CSI1_D2", "UART3_TX", "CSI0_D10"},
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"PG7": {"TS1_D3", "CSI1_D3", "UART3_RX", "CSI0_D11"},
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"PG8": {"TS1_D4", "CSI1_D4", "UART3_RTS", "CSI0_D12"},
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"PG9": {"TS1_D5", "CSI1_D4", "UART3_CTS", "CSI0_D13"},
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"PG10": {"TS1_D6", "CSI1_D6", "UART4_TX", "CSI0_D14"},
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"PG11": {"TS1_D7", "CSI1_D7", "UART4_RX", "CSI0_D15"},
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"PH0": {"LCD1_D0", "", "UART3_TX", "", "PH_EINT0"},
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"PH1": {"LCD1_D1", "", "UART3_RX", "", "PH_EINT1"},
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"PH2": {"LCD1_D2", "", "UART3_RTS", "", "PH_EINT2"},
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"PH3": {"LCD1_D3", "", "UART3_CTS", "", "PH_EINT3"},
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"PH4": {"LCD1_D4", "", "UART4_TX", "", "PH_EINT4"},
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"PH5": {"LCD1_D5", "", "UART4_RX", "", "PH_EINT5"},
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"PH6": {"LCD1_D6", "", "UART5_TX", "MS_BS", "PH_EINT6"},
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"PH7": {"LCD1_D7", "", "UART5_RX", "MS_CLK", "PH_EINT7"},
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"PH8": {"LCD1_D8", "ERXD3", "KP_IN0", "MS_D0", "PH_EINT8"},
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"PH9": {"LCD1_D9", "ERXD2", "KP_IN1", "MS_D1", "PH_EINT9"},
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"PH10": {"LCD1_D10", "ERXD1", "KP_IN2", "MS_D2", "PH_EINT10"},
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"PH11": {"LCD1_D11", "ERXD0", "KP_IN3", "MS_D3", "PH_EINT11"},
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"PH12": {"LCD1_D12", "", "PS2_SCK1", "", "PH_EINT12"},
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"PH13": {"LCD1_D13", "", "PS2_SDA1", "SMC_RST", "PH_EINT13"},
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"PH14": {"LCD1_D14", "ETXD3", "KP_IN4", "SMC_VPPEN", "PH_EINT14"},
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"PH15": {"LCD1_D15", "ETXD2", "KP_IN5", "SMC_VPPPP", "PH_EINT15"},
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"PH16": {"LCD1_D16", "ETXD1", "KP_IN6", "SMC_DET", "PH_EINT16"},
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"PH17": {"LCD1_D17", "ETXD0", "KP_IN7", "SMC_VCCEN", "PH_EINT17"},
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"PH18": {"LCD1_D18", "ERXCK", "KP_OUT0", "SMC_SLK", "PH_EINT18"},
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"PH19": {"LCD1_D19", "ERXERR", "KP_OUT1", "SMC_SDA", "PH_EINT19"},
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"PH20": {"LCD1_D20", "ERXDV", "CAN_TX", "", "PH_EINT20"},
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"PH21": {"LCD1_D21", "EMDC", "CAN_RX", "", "PH_EINT21"},
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"PH22": {"LCD1_D22", "EMDIO", "KP_OUT2", "SDC1_CMD", ""},
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"PH23": {"LCD1_D23", "ETXEN", "KP_OUT3", "SDC1_CLK", ""},
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"PH24": {"LCD1_CLK", "ETXCK", "KP_OUT4", "SDC1_D0", ""},
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"PH25": {"LCD1_DE", "ECRS", "KP_OUT5", "SDC1_D1", ""},
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"PH26": {"LCD1_HSYNC", "ECOL", "KP_OUT6", "SDC1_D2", ""},
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"PH27": {"LCD1_VSYNC", "ETXERR", "KP_OUT7", "SDC1_D3", ""},
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"PI0": {"", "I2C3_SCL"},
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"PI1": {"", "I2C3_SDA"},
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"PI2": {"", "I2C4_SCL"},
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"PI3": {"PWM1", "I2C4_SDA"},
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"PI4": {"SDC3_CMD"},
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"PI5": {"SDC3_CLK"},
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"PI6": {"SDC3_D0"},
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"PI7": {"SDC3_D1"},
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"PI8": {"SDC3_D2"},
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"PI9": {"SDC3_D3"},
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"PI10": {"SPI0_CS0", "UART5_TX", "", "PI_EINT22"},
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"PI11": {"SPI0_CLK", "UART5_RX", "", "PI_EINT23"},
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"PI12": {"SPI0_MOSI", "UART6_TX", "CLK_OUT_A", "PI_EINT24"},
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"PI13": {"SPI0_MISO", "UART6_RX", "CLK_OUT_B", "PI_EINT25"},
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"PI14": {"SPI0_CS0", "PS2_SCK1", "TCLKIN0", "PI_EINT26"},
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"PI15": {"SPI1_CS1", "PS2_SDA1", "TCLKIN1", "PI_EINT27"},
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"PI16": {"SPI1_CS0", "UART2_RTS", "", "PI_EINT28"},
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"PI17": {"SPI1_CLK", "UART2_CTS", "", "PI_EINT29"},
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"PI18": {"SPI1_MOSI", "UART2_TX", "", "PI_EINT30"},
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"PI19": {"SPI1_MISO", "UART2_RX", "", "PI_EINT31"},
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"PI20": {"PS2_SCK0", "UART7_TX", "HSCL"},
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"PI21": {"PS2_SDA0", "UART7_RX", "HSDA"},
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}
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// mapA20Pins uses mappingA20 to actually set the altFunc fields of all gpio
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// and mark them as available.
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//
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// It is called by the generic allwinner processor code if an A20 is detected.
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func mapA20Pins() error {
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for name, altFuncs := range mappingA20 {
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pin := cpupins[name]
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pin.altFunc = altFuncs
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pin.available = true
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if strings.Contains(string(altFuncs[4]), "_EINT") ||
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strings.Contains(string(altFuncs[3]), "_EINT") {
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pin.supportEdge = true
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}
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// Initializes the sysfs corresponding pin right away.
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pin.sysfsPin = sysfs.Pins[pin.Number()]
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}
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return nil
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}
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