1. GPIO状态

cat /sys/kernel/debug/gpio

可以看到当前所有GPIO口的状态，输入输出模式，输出高/低

gpiochip0: GPIOs0-115, gpio:

gpio-0 ( |sysfs ) inhi

gpio-1 ( |sysfs ) inhi

gpio-2 ( |sysfs ) outlo

gpio-3 ( |sysfs ) inhi

gpio-4 ( |sysfs ) inhi

gpio-5 ( |sysfs ) outlo

gpio-6 ( |sysfs ) inhi

gpio-7 ( |sysfs ) outhi

gpio-8 ( |sysfs ) outlo

gpio-9 ( |sysfs ) inhi

gpio-10 ( |sysfs ) outhi

gpio-11 ( |sysfs ) inhi

gpio-12 ( |sysfs ) inhi

gpio-13 ( |sysfs ) outhi

gpio-14 ( |sysfs ) outhi

gpio-15 ( |sysfs ) outhi

gpio-16 ( |sysfs ) inhi

gpio-17 ( |sysfs ) inlo

gpio-18 ( |sysfs ) inlo

gpio-19 ( |sysfs ) inhi

gpio-20 ( |sysfs ) inlo

gpio-21 ( |sysfs ) inlo

gpio-22 ( |sysfs ) inhi

gpio-23 ( |sysfs ) inlo

gpio-24 ( |sysfs ) inlo

gpio-25 ( |sysfs ) inlo

gpio-26 ( |sysfs ) inlo

gpio-27 ( |sysfs ) inhi

gpio-28 ( |sysfs ) inhi

gpio-29 ( |sysfs ) inhi

gpio-30 ( |sysfs ) inhi

gpio-31 ( |sysfs ) inlo

gpio-32 ( |sysfs ) inhi

gpio-33 ( |sysfs ) inhi

gpio-34 ( |sysfs ) inlo

gpio-35 ( |sysfs ) outlo

gpio-36 ( |sysfs ) outlo

gpio-37 ( |sysfs ) outlo

gpio-38 ( |sysfs ) outlo

gpio-39 ( |sysfs ) inlo

gpio-40 ( |sysfs ) inhi

gpio-41 ( |sysfs ) inhi

gpio-42 ( |sysfs ) inhi

gpio-43 ( |sysfs ) inhi

gpio-44 ( |sysfs ) inlo

gpio-45 ( |sysfs ) outhi

gpio-46 ( |sysfs ) inhi

gpio-47 ( |sysfs ) outhi

gpio-48 ( |sysfs ) inhi

gpio-49 ( |sysfs ) outhi

gpio-50 ( |sysfs ) inhi

gpio-51 ( |sysfs ) inhi

gpio-52 ( |sysfs ) inlo

gpio-53 ( |sysfs ) outlo

gpio-54 ( |sysfs ) outhi

gpio-55 ( |sysfs ) outlo

gpio-56 ( |sysfs ) outhi

gpio-57 ( |sysfs ) outlo

gpio-58 ( |sysfs ) outhi

gpio-59 ( |sysfs ) inhi

gpio-60 ( |sysfs ) inhi

gpio-61 ( |sysfs ) outhi

gpio-64 ( |sysfs ) outhi

gpio-65 ( |sysfs ) outhi

gpio-66 ( |sysfs ) outhi

gpio-67 ( |sysfs ) outlo

gpio-68 ( |sysfs ) inhi

gpio-69 ( |sysfs ) inhi

gpio-70 ( |sysfs ) inhi

gpio-71 ( |sysfs ) inhi

gpio-72 ( |sysfs ) inhi

gpio-73 ( |sysfs ) inhi

gpio-74 ( |sysfs ) outlo

gpio-75 ( |sysfs ) outhi

gpio-76 ( |sysfs ) inhi

gpio-77 ( |sysfs ) inhi

gpio-78 ( |sysfs ) inhi

gpio-79 ( |sysfs ) inlo

gpio-80 ( |sysfs ) inhi

gpio-81 ( |sysfs ) inlo

gpio-82 ( |sysfs ) inlo

gpio-83 ( |sysfs ) outlo

gpio-84 ( |sysfs ) inlo

gpio-85 ( |sysfs ) inlo

gpio-86 ( |sysfs ) outhi

gpio-87 ( |sysfs ) outlo

gpio-88 ( |sysfs ) inhi

gpio-89 ( |sysfs ) outlo

gpio-90 ( |sysfs ) outlo

gpio-91 ( |sysfs ) outlo

gpio-92 ( |sysfs ) inhi

gpio-93 ( |sysfs ) inhi

gpio-94 ( |sysfs ) outhi

gpio-95 ( |sysfs ) outhi

gpio-96 ( |sysfs ) inlo

gpio-97 ( |scl ) inhi

gpio-98 ( |sda ) inhi

gpio-99 ( |sysfs ) inhi

gpio-100 ( |sysfs ) inhi

gpio-101 ( |sysfs ) inhi

gpio-102 ( |sysfs ) inlo

gpio-103 ( |sysfs ) inhi

gpio-104 ( |sysfs ) inhi

gpio-105 ( |sysfs ) inhi

gpio-106 ( |sysfs ) inhi

gpio-107 ( |sysfs ) inhi

gpio-108 ( |sysfs ) inhi

gpio-109 ( |sysfs ) inhi

gpio-110 ( |sysfs ) outlo

gpio-111 ( |sysfs ) outhi

gpio-112 ( |sysfs ) inhi

gpio-113 ( |sysfs ) inhi

gpio-114 ( |sysfs ) inhi

gpio-115 ( |sysfs ) in hi

例如： GPIO74 为 输出 低电平(lo-低，hi-高)

gpio-74 ( |sysfs ) out lo

2. GPIO属性

以gpio-16为例：

(1)direction ： IO 输入/输出模式

# cat /sys/devices/gpiochip0/gpio/gpio16/directionout

(2)active_low

# cat /sys/devices/gpiochip0/gpio/gpio16/active_low0

(3)value 当前电平高低

# cat /sys/devices/gpiochip0/gpio/gpio16/value0

手动拉高：

echo 1 > /sys/devices/gpiochip0/gpio/gpio16/value

手动拉低：

echo 0 > /sys/devices/gpiochip0/gpio/gpio16/value

3. reg 与 IO 映射

reg 和 pin ID映射 vendor\mstar\kernel\linaro\mstar2\hal\m7221\gpio\mhal_gpio.c

#define GPIO0_PAD PAD_IRIN

#define GPIO0_OEN 0x0f26, BIT0

#define GPIO0_OUT 0x0f26, BIT1

#define GPIO0_IN 0x0f26, BIT2

#define GPIO1_PAD PAD_CEC0

#define GPIO1_OEN 0x0f2a, BIT0

#define GPIO1_OUT 0x0f2a, BIT1

#define GPIO1_IN 0x0f2a, BIT2

#define GPIO2_PAD PAD_PWM_PM

#define GPIO2_OEN 0x0f28, BIT0

#define GPIO2_OUT 0x0f28, BIT1

#define GPIO2_IN 0x0f28, BIT2

#define GPIO3_PAD PAD_DDCA_CK

#define GPIO3_OEN 0x0494, BIT1

#define GPIO3_OUT 0x0494, BIT2

#define GPIO3_IN 0x0494, BIT0

#define GPIO4_PAD PAD_DDCA_DA

#define GPIO4_OEN 0x0494, BIT5

#define GPIO4_OUT 0x0494, BIT6

#define GPIO4_IN 0x0494, BIT4

#define GPIO5_PAD PAD_GPIO0_PM

#define GPIO5_OEN 0x0f00, BIT0

#define GPIO5_OUT 0x0f00, BIT1

#define GPIO5_IN 0x0f00, BIT2

#define GPIO6_PAD PAD_GPIO1_PM

#define GPIO6_OEN 0x0f02, BIT0

#define GPIO6_OUT 0x0f02, BIT1

#define GPIO6_IN 0x0f02, BIT2

#define GPIO7_PAD PAD_GPIO2_PM

#define GPIO7_OEN 0x0f04, BIT0

#define GPIO7_OUT 0x0f04, BIT1

#define GPIO7_IN 0x0f04, BIT2

#define GPIO8_PAD PAD_USB_CTRL

#define GPIO8_OEN 0x0f06, BIT0

#define GPIO8_OUT 0x0f06, BIT1

#define GPIO8_IN 0x0f06, BIT2

#define GPIO9_PAD PAD_GPIO5_PM

#define GPIO9_OEN 0x0f0a, BIT0

#define GPIO9_OUT 0x0f0a, BIT1

#define GPIO9_IN 0x0f0a, BIT2

#define GPIO10_PAD PAD_GPIO6_PM

#define GPIO10_OEN 0x0f0c, BIT0

#define GPIO10_OUT 0x0f0c, BIT1

#define GPIO10_IN 0x0f0c, BIT2

#define GPIO11_PAD PAD_GPIO7_PM

#define GPIO11_OEN 0x0f0e, BIT0

#define GPIO11_OUT 0x0f0e, BIT1

#define GPIO11_IN 0x0f0e, BIT2

#define GPIO12_PAD PAD_GPIO8_PM

#define GPIO12_OEN 0x0f10, BIT0

#define GPIO12_OUT 0x0f10, BIT1

#define GPIO12_IN 0x0f10, BIT2

#define GPIO13_PAD PAD_GPIO9_PM

#define GPIO13_OEN 0x0f12, BIT0

#define GPIO13_OUT 0x0f12, BIT1

#define GPIO13_IN 0x0f12, BIT2

#define GPIO14_PAD PAD_GPIO10_PM

#define GPIO14_OEN 0x0f14, BIT0

#define GPIO14_OUT 0x0f14, BIT1

#define GPIO14_IN 0x0f14, BIT2

#define GPIO15_PAD PAD_GPIO11_PM

#define GPIO15_OEN 0x0f16, BIT0

#define GPIO15_OUT 0x0f16, BIT1

#define GPIO15_IN 0x0f16, BIT2

#define GPIO16_PAD PAD_GPIO12_PM

#define GPIO16_OEN 0x0f18, BIT0

#define GPIO16_OUT 0x0f18, BIT1

#define GPIO16_IN 0x0f18, BIT2

#define GPIO17_PAD PAD_HOTPLUGA

#define GPIO17_OEN 0x0e4e, BIT0

#define GPIO17_OUT 0x0e4e, BIT4

#define GPIO17_IN 0x0e4f, BIT0

#define GPIO18_PAD PAD_HOTPLUGB

#define GPIO18_OEN 0x0e4e, BIT1

#define GPIO18_OUT 0x0e4e, BIT5

#define GPIO18_IN 0x0e4f, BIT1

#define GPIO19_PAD PAD_HOTPLUGC

#define GPIO19_OEN 0x0e4e, BIT2

#define GPIO19_OUT 0x0e4e, BIT6

#define GPIO19_IN 0x0e4f, BIT2

#define GPIO20_PAD PAD_HOTPLUGA_HDMI20_5V

#define GPIO20_OEN 0x010218, BIT5

#define GPIO20_OUT 0x010218, BIT4

#define GPIO20_IN 0x010218, BIT6

#define GPIO21_PAD PAD_HOTPLUGB_HDMI20_5V

#define GPIO21_OEN 0x010318, BIT5

#define GPIO21_OUT 0x010318, BIT4

#define GPIO21_IN 0x010318, BIT6

#define GPIO22_PAD PAD_HOTPLUGC_HDMI20_5V

#define GPIO22_OEN 0x010418, BIT5

#define GPIO22_OUT 0x010418, BIT4

#define GPIO22_IN 0x010418, BIT6

#define GPIO23_PAD PAD_DDCDA_CK

#define GPIO23_OEN 0x0496, BIT1

#define GPIO23_OUT 0x0496, BIT2

#define GPIO23_IN 0x0496, BIT0

#define GPIO24_PAD PAD_DDCDA_DA

#define GPIO24_OEN 0x0496, BIT5

#define GPIO24_OUT 0x0496, BIT6

#define GPIO24_IN 0x0496, BIT4

#define GPIO25_PAD PAD_DDCDB_CK

#define GPIO25_OEN 0x0497, BIT1

#define GPIO25_OUT 0x0497, BIT2

#define GPIO25_IN 0x0497, BIT0

#define GPIO26_PAD PAD_DDCDB_DA

#define GPIO26_OEN 0x0497, BIT5

#define GPIO26_OUT 0x0497, BIT6

#define GPIO26_IN 0x0497, BIT4

#define GPIO27_PAD PAD_DDCDC_CK

#define GPIO27_OEN 0x0498, BIT1

#define GPIO27_OUT 0x0498, BIT2

#define GPIO27_IN 0x0498, BIT0

#define GPIO28_PAD PAD_DDCDC_DA

#define GPIO28_OEN 0x0498, BIT5

#define GPIO28_OUT 0x0498, BIT6

#define GPIO28_IN 0x0498, BIT4

#define GPIO29_PAD PAD_SAR0

#define GPIO29_OEN 0x1423, BIT0

#define GPIO29_OUT 0x1424, BIT0

#define GPIO29_IN 0x1425, BIT0

#define GPIO30_PAD PAD_SAR1

#define GPIO30_OEN 0x1423, BIT1

#define GPIO30_OUT 0x1424, BIT1

#define GPIO30_IN 0x1425, BIT1

#define GPIO31_PAD PAD_SAR2

#define GPIO31_OEN 0x1423, BIT2

#define GPIO31_OUT 0x1424, BIT2

#define GPIO31_IN 0x1425, BIT2

#define GPIO32_PAD PAD_SAR3

#define GPIO32_OEN 0x1423, BIT3

#define GPIO32_OUT 0x1424, BIT3

#define GPIO32_IN 0x1425, BIT3

#define GPIO33_PAD PAD_SAR4

#define GPIO33_OEN 0x1423, BIT4

#define GPIO33_OUT 0x1424, BIT4

#define GPIO33_IN 0x1425, BIT4

#define GPIO34_PAD PAD_VPLUGIN

#define GPIO34_OEN 0x1423, BIT5

#define GPIO34_OUT 0x1424, BIT5

#define GPIO34_IN 0x1425, BIT5

#define GPIO35_PAD PAD_VID0

#define GPIO35_OEN 0x2e84, BIT1

#define GPIO35_OUT 0x2e84, BIT0

#define GPIO35_IN 0x2e84, BIT2

#define GPIO36_PAD PAD_VID1

#define GPIO36_OEN 0x2e85, BIT1

#define GPIO36_OUT 0x2e85, BIT0

#define GPIO36_IN 0x2e85, BIT2

#define GPIO37_PAD PAD_VID2

#define GPIO37_OEN 0x0f22, BIT0

#define GPIO37_OUT 0x0f22, BIT1

#define GPIO37_IN 0x0f22, BIT2

#define GPIO38_PAD PAD_VID3

#define GPIO38_OEN 0x0f24, BIT0

#define GPIO38_OUT 0x0f24, BIT1

#define GPIO38_IN 0x0f24, BIT2

#define GPIO39_PAD PAD_WOL_INT_OUT

#define GPIO39_OEN 0x2e82, BIT1

#define GPIO39_OUT 0x2e82, BIT0

#define GPIO39_IN 0x2e82, BIT2

#define GPIO40_PAD PAD_I2S_IN_BCK

#define GPIO40_OEN 0x0f3e, BIT0

#define GPIO40_OUT 0x0f3e, BIT1

#define GPIO40_IN 0x0f3e, BIT2

#define GPIO41_PAD PAD_I2S_IN_WS

#define GPIO41_OEN 0x0f40, BIT0

#define GPIO41_OUT 0x0f40, BIT1

#define GPIO41_IN 0x0f40, BIT2

#define GPIO42_PAD PAD_I2S_IN_MCK

#define GPIO42_OEN 0x0f42, BIT0

#define GPIO42_OUT 0x0f42, BIT1

#define GPIO42_IN 0x0f42, BIT2

#define GPIO43_PAD PAD_I2S_IN_SD0

#define GPIO43_OEN 0x0f44, BIT0

#define GPIO43_OUT 0x0f44, BIT1

#define GPIO43_IN 0x0f44, BIT2

#define GPIO44_PAD PAD_I2S_IN_SD1

#define GPIO44_OEN 0x0f46, BIT0

#define GPIO44_OUT 0x0f46, BIT1

#define GPIO44_IN 0x0f46, BIT2

#define GPIO45_PAD PAD_CILINK_DEMOD0_CLK

#define GPIO45_OEN 0x102b13, BIT1

#define GPIO45_OUT 0x102b13, BIT0

#define GPIO45_IN 0x102b13, BIT2

#define GPIO46_PAD PAD_CILINK_DEMOD1_CLK

#define GPIO46_OEN 0x102b1a, BIT1

#define GPIO46_OUT 0x102b1a, BIT0

#define GPIO46_IN 0x102b1a, BIT2

#define GPIO47_PAD PAD_CILINK_INT

#define GPIO47_OEN 0x102b12, BIT1

#define GPIO47_OUT 0x102b12, BIT0

#define GPIO47_IN 0x102b12, BIT2

#define GPIO48_PAD PAD_CILINK_RX0_D0

#define GPIO48_OEN 0x102b18, BIT1

#define GPIO48_OUT 0x102b18, BIT0

#define GPIO48_IN 0x102b18, BIT2

#define GPIO49_PAD PAD_CILINK_RX0_D1

#define GPIO49_OEN 0x102b19, BIT1

#define GPIO49_OUT 0x102b19, BIT0

#define GPIO49_IN 0x102b19, BIT2

#define GPIO50_PAD PAD_CILINK_RX1_D0

#define GPIO50_OEN 0x102ba1, BIT1

#define GPIO50_OUT 0x102ba1, BIT0

#define GPIO50_IN 0x102ba1, BIT2

#define GPIO51_PAD PAD_CILINK_RX1_D1

#define GPIO51_OEN 0x102ba2, BIT1

#define GPIO51_OUT 0x102ba2, BIT0

#define GPIO51_IN 0x102ba2, BIT2

#define GPIO52_PAD PAD_CILINK_RX_CLK

#define GPIO52_OEN 0x102b17, BIT1

#define GPIO52_OUT 0x102b17, BIT0

#define GPIO52_IN 0x102b17, BIT2

#define GPIO53_PAD PAD_CILINK_SPI_CLK

#define GPIO53_OEN 0x102b0e, BIT1

#define GPIO53_OUT 0x102b0e, BIT0

#define GPIO53_IN 0x102b0e, BIT2

#define GPIO54_PAD PAD_CILINK_SPI_CS

#define GPIO54_OEN 0x102b11, BIT1

#define GPIO54_OUT 0x102b11, BIT0

#define GPIO54_IN 0x102b11, BIT2

#define GPIO55_PAD PAD_CILINK_SPI_MISO

#define GPIO55_OEN 0x102b10, BIT1

#define GPIO55_OUT 0x102b10, BIT0

#define GPIO55_IN 0x102b10, BIT2

#define GPIO56_PAD PAD_CILINK_SPI_MOSI

#define GPIO56_OEN 0x102b0f, BIT1

#define GPIO56_OUT 0x102b0f, BIT0

#define GPIO56_IN 0x102b0f, BIT2

#define GPIO57_PAD PAD_CILINK_TX0_D0

#define GPIO57_OEN 0x102b15, BIT1

#define GPIO57_OUT 0x102b15, BIT0

#define GPIO57_IN 0x102b15, BIT2

#define GPIO58_PAD PAD_CILINK_TX0_D1

#define GPIO58_OEN 0x102b16, BIT1

#define GPIO58_OUT 0x102b16, BIT0

#define GPIO58_IN 0x102b16, BIT2

#define GPIO59_PAD PAD_CILINK_TX1_D0

#define GPIO59_OEN 0x102b1b, BIT1

#define GPIO59_OUT 0x102b1b, BIT0

#define GPIO59_IN 0x102b1b, BIT2

#define GPIO60_PAD PAD_CILINK_TX1_D1

#define GPIO60_OEN 0x102ba0, BIT1

#define GPIO60_OUT 0x102ba0, BIT0

#define GPIO60_IN 0x102ba0, BIT2

#define GPIO61_PAD PAD_CILINK_TX_CLK

#define GPIO61_OEN 0x102b14, BIT1

#define GPIO61_OUT 0x102b14, BIT0

#define GPIO61_IN 0x102b14, BIT2

#define GPIO62_PAD PAD_DDCR_CK

#define GPIO62_OEN 0x102b87, BIT1

#define GPIO62_OUT 0x102b87, BIT0

#define GPIO62_IN 0x102b87, BIT2

#define GPIO63_PAD PAD_DDCR_DA

#define GPIO63_OEN 0x102b86, BIT1

#define GPIO63_OUT 0x102b86, BIT0

#define GPIO63_IN 0x102b86, BIT2

#define GPIO64_PAD PAD_GPIO2

#define GPIO64_OEN 0x102b00, BIT1

#define GPIO64_OUT 0x102b00, BIT0

#define GPIO64_IN 0x102b00, BIT2

#define GPIO65_PAD PAD_GPIO3

#define GPIO65_OEN 0x102b01, BIT1

#define GPIO65_OUT 0x102b01, BIT0

#define GPIO65_IN 0x102b01, BIT2

#define GPIO66_PAD PAD_GPIO4

#define GPIO66_OEN 0x102b02, BIT1

#define GPIO66_OUT 0x102b02, BIT0

#define GPIO66_IN 0x102b02, BIT2

#define GPIO67_PAD PAD_GPIO5

#define GPIO67_OEN 0x102b03, BIT1

#define GPIO67_OUT 0x102b03, BIT0

#define GPIO67_IN 0x102b03, BIT2

#define GPIO68_PAD PAD_GPIO9

#define GPIO68_OEN 0x102b04, BIT1

#define GPIO68_OUT 0x102b04, BIT0

#define GPIO68_IN 0x102b04, BIT2

#define GPIO69_PAD PAD_GPIO10

#define GPIO69_OEN 0x102b05, BIT1

#define GPIO69_OUT 0x102b05, BIT0

#define GPIO69_IN 0x102b05, BIT2

#define GPIO70_PAD PAD_GPIO11

#define GPIO70_OEN 0x102b06, BIT1

#define GPIO70_OUT 0x102b06, BIT0

#define GPIO70_IN 0x102b06, BIT2

#define GPIO71_PAD PAD_GPIO12

#define GPIO71_OEN 0x102b07, BIT1

#define GPIO71_OUT 0x102b07, BIT0

#define GPIO71_IN 0x102b07, BIT2

#define GPIO72_PAD PAD_GPIO19

#define GPIO72_OEN 0x102b08, BIT1

#define GPIO72_OUT 0x102b08, BIT0

#define GPIO72_IN 0x102b08, BIT2

#define GPIO73_PAD PAD_GPIO20

#define GPIO73_OEN 0x102b09, BIT1

#define GPIO73_OUT 0x102b09, BIT0

#define GPIO73_IN 0x102b09, BIT2

#define GPIO74_PAD PAD_GPIO25

#define GPIO74_OEN 0x102b0a, BIT1

#define GPIO74_OUT 0x102b0a, BIT0

#define GPIO74_IN 0x102b0a, BIT2

#define GPIO75_PAD PAD_GPIO26

#define GPIO75_OEN 0x102b0b, BIT1

#define GPIO75_OUT 0x102b0b, BIT0

#define GPIO75_IN 0x102b0b, BIT2

#define GPIO76_PAD PAD_GPIO30

#define GPIO76_OEN 0x102b0c, BIT1

#define GPIO76_OUT 0x102b0c, BIT0

#define GPIO76_IN 0x102b0c, BIT2

#define GPIO77_PAD PAD_GPIO31

#define GPIO77_OEN 0x102b0d, BIT1

#define GPIO77_OUT 0x102b0d, BIT0

#define GPIO77_IN 0x102b0d, BIT2

#define GPIO78_PAD PAD_HDMIRX_ARCTX

#define GPIO78_OEN 0x110320, BIT1

#define GPIO78_OUT 0x110320, BIT0

#define GPIO78_IN 0x110320, BIT2

#define GPIO79_PAD PAD_I2S_OUT_BCK

#define GPIO79_OEN 0x102b38, BIT1

#define GPIO79_OUT 0x102b38, BIT0

#define GPIO79_IN 0x102b38, BIT2

#define GPIO80_PAD PAD_I2S_OUT_MCK

#define GPIO80_OEN 0x102b39, BIT1

#define GPIO80_OUT 0x102b39, BIT0

#define GPIO80_IN 0x102b39, BIT2

#define GPIO81_PAD PAD_I2S_OUT_SD

#define GPIO81_OEN 0x102b3b, BIT1

#define GPIO81_OUT 0x102b3b, BIT0

#define GPIO81_IN 0x102b3b, BIT2

#define GPIO82_PAD PAD_I2S_OUT_SD1

#define GPIO82_OEN 0x102b3c, BIT1

#define GPIO82_OUT 0x102b3c, BIT0

#define GPIO82_IN 0x102b3c, BIT2

#define GPIO83_PAD PAD_I2S_OUT_SD2

#define GPIO83_OEN 0x102b3d, BIT1

#define GPIO83_OUT 0x102b3d, BIT0

#define GPIO83_IN 0x102b3d, BIT2

#define GPIO84_PAD PAD_I2S_OUT_WS

#define GPIO84_OEN 0x102b3a, BIT1

#define GPIO84_OUT 0x102b3a, BIT0

#define GPIO84_IN 0x102b3a, BIT2

#define GPIO85_PAD PAD_PWM0

#define GPIO85_OEN 0x102b88, BIT1

#define GPIO85_OUT 0x102b88, BIT0

#define GPIO85_IN 0x102b88, BIT2

#define GPIO86_PAD PAD_PWM1

#define GPIO86_OEN 0x102b89, BIT1

#define GPIO86_OUT 0x102b89, BIT0

#define GPIO86_IN 0x102b89, BIT2

#define GPIO87_PAD PAD_PWM2

#define GPIO87_OEN 0x102b8a, BIT1

#define GPIO87_OUT 0x102b8a, BIT0

#define GPIO87_IN 0x102b8a, BIT2

#define GPIO88_PAD PAD_PWM3

#define GPIO88_OEN 0x102b8b, BIT1

#define GPIO88_OUT 0x102b8b, BIT0

#define GPIO88_IN 0x102b8b, BIT2

#define GPIO89_PAD PAD_SD_CLK

#define GPIO89_OEN 0x102bfa, BIT1

#define GPIO89_OUT 0x102bfa, BIT0

#define GPIO89_IN 0x102bfa, BIT2

#define GPIO90_PAD PAD_SD_CMD

#define GPIO90_OEN 0x102bfb, BIT1

#define GPIO90_OUT 0x102bfb, BIT0

#define GPIO90_IN 0x102bfb, BIT2

#define GPIO91_PAD PAD_SD_D0

#define GPIO91_OEN 0x102bac, BIT1

#define GPIO91_OUT 0x102bac, BIT0

#define GPIO91_IN 0x102bac, BIT2

#define GPIO92_PAD PAD_SD_D1

#define GPIO92_OEN 0x102bad, BIT1

#define GPIO92_OUT 0x102bad, BIT0

#define GPIO92_IN 0x102bad, BIT2

#define GPIO93_PAD PAD_SD_D2

#define GPIO93_OEN 0x102bae, BIT1

#define GPIO93_OUT 0x102bae, BIT0

#define GPIO93_IN 0x102bae, BIT2

#define GPIO94_PAD PAD_SD_D3

#define GPIO94_OEN 0x102bf9, BIT1

#define GPIO94_OUT 0x102bf9, BIT0

#define GPIO94_IN 0x102bf9, BIT2

#define GPIO95_PAD PAD_SPDIF_IN

#define GPIO95_OEN 0x102b36, BIT1

#define GPIO95_OUT 0x102b36, BIT0

#define GPIO95_IN 0x102b36, BIT2

#define GPIO96_PAD PAD_SPDIF_OUT

#define GPIO96_OEN 0x102b37, BIT1

#define GPIO96_OUT 0x102b37, BIT0

#define GPIO96_IN 0x102b37, BIT2

#define GPIO97_PAD PAD_TGPIO0

#define GPIO97_OEN 0x102b8d, BIT1

#define GPIO97_OUT 0x102b8d, BIT0

#define GPIO97_IN 0x102b8d, BIT2

#define GPIO98_PAD PAD_TGPIO1

#define GPIO98_OEN 0x102b8e, BIT1

#define GPIO98_OUT 0x102b8e, BIT0

#define GPIO98_IN 0x102b8e, BIT2

#define GPIO99_PAD PAD_TGPIO2

#define GPIO99_OEN 0x102b8f, BIT1

#define GPIO99_OUT 0x102b8f, BIT0

#define GPIO99_IN 0x102b8f, BIT2

#define GPIO100_PAD PAD_TGPIO3

#define GPIO100_OEN 0x102b90, BIT1

#define GPIO100_OUT 0x102b90, BIT0

#define GPIO100_IN 0x102b90, BIT2

#define GPIO101_PAD PAD_TS1_CLK

#define GPIO101_OEN 0x102b27, BIT1

#define GPIO101_OUT 0x102b27, BIT0

#define GPIO101_IN 0x102b27, BIT2

#define GPIO102_PAD PAD_TS1_D0

#define GPIO102_OEN 0x102b31, BIT1

#define GPIO102_OUT 0x102b31, BIT0

#define GPIO102_IN 0x102b31, BIT2

#define GPIO103_PAD PAD_TS1_D1

#define GPIO103_OEN 0x102b30, BIT1

#define GPIO103_OUT 0x102b30, BIT0

#define GPIO103_IN 0x102b30, BIT2

#define GPIO104_PAD PAD_TS1_D2

#define GPIO104_OEN 0x102b2f, BIT1

#define GPIO104_OUT 0x102b2f, BIT0

#define GPIO104_IN 0x102b2f, BIT2

#define GPIO105_PAD PAD_TS1_D3

#define GPIO105_OEN 0x102b2e, BIT1

#define GPIO105_OUT 0x102b2e, BIT0

#define GPIO105_IN 0x102b2e, BIT2

#define GPIO106_PAD PAD_TS1_D4

#define GPIO106_OEN 0x102b2d, BIT1

#define GPIO106_OUT 0x102b2d, BIT0

#define GPIO106_IN 0x102b2d, BIT2

#define GPIO107_PAD PAD_TS1_D5

#define GPIO107_OEN 0x102b2c, BIT1

#define GPIO107_OUT 0x102b2c, BIT0

#define GPIO107_IN 0x102b2c, BIT2

#define GPIO108_PAD PAD_TS1_D6

#define GPIO108_OEN 0x102b2b, BIT1

#define GPIO108_OUT 0x102b2b, BIT0

#define GPIO108_IN 0x102b2b, BIT2

#define GPIO109_PAD PAD_TS1_D7

#define GPIO109_OEN 0x102b2a, BIT1

#define GPIO109_OUT 0x102b2a, BIT0

#define GPIO109_IN 0x102b2a, BIT2

#define GPIO110_PAD PAD_TS1_SYNC

#define GPIO110_OEN 0x102b28, BIT1

#define GPIO110_OUT 0x102b28, BIT0

#define GPIO110_IN 0x102b28, BIT2

#define GPIO111_PAD PAD_TS1_VLD

#define GPIO111_OEN 0x102b29, BIT1

#define GPIO111_OUT 0x102b29, BIT0

#define GPIO111_IN 0x102b29, BIT2

#define GPIO112_PAD PAD_TS2_CLK

#define GPIO112_OEN 0x102b35, BIT1

#define GPIO112_OUT 0x102b35, BIT0

#define GPIO112_IN 0x102b35, BIT2

#define GPIO113_PAD PAD_TS2_D0

#define GPIO113_OEN 0x102b32, BIT1

#define GPIO113_OUT 0x102b32, BIT0

#define GPIO113_IN 0x102b32, BIT2

#define GPIO114_PAD PAD_TS2_SYNC

#define GPIO114_OEN 0x102b34, BIT1

#define GPIO114_OUT 0x102b34, BIT0

#define GPIO114_IN 0x102b34, BIT2

#define GPIO115_PAD PAD_TS2_VLD

#define GPIO115_OEN 0x102b33, BIT1

#define GPIO115_OUT 0x102b33, BIT0

#define GPIO115_IN 0x102b33, BIT2

#define GPIO_EXT0_MSK 0x10190c, BIT7

#define GPIO_EXT0_POL 0x101914, BIT7

#define GPIO_EXT0_CLR 0x10191c, BIT7

#define GPIO_EXT0_STS 0x10191c, BIT7

#define GPIO_EXT1_MSK 0x10190c, BIT11

#define GPIO_EXT1_POL 0x101914, BIT11

#define GPIO_EXT1_CLR 0x10191c, BIT11

#define GPIO_EXT1_STS 0x10191c, BIT11

#define GPIO_EXT2_MSK 0x10190c, BIT15

#define GPIO_EXT2_POL 0x101914, BIT15

#define GPIO_EXT2_CLR 0x10191c, BIT15

#define GPIO_EXT2_STS 0x10191c, BIT15

#define GPIO_EXT3_MSK 0x10190e, BIT7

#define GPIO_EXT3_POL 0x101916, BIT7

#define GPIO_EXT3_CLR 0x10191e, BIT7

#define GPIO_EXT3_STS 0x10191e, BIT7

#define GPIO_EXT4_MSK 0x10190e, BIT8

#define GPIO_EXT4_POL 0x101916, BIT8

#define GPIO_EXT4_CLR 0x10191e, BIT8

#define GPIO_EXT4_STS 0x10191e, BIT8

#define GPIO_EXT5_MSK 0x10190e, BIT8

#define GPIO_EXT5_POL 0x101916, BIT8

#define GPIO_EXT5_CLR 0x10191e, BIT8

#define GPIO_EXT5_STS 0x10191e, BIT8

#define GPIO_EXT6_MSK 0x10190e, BIT10

#define GPIO_EXT6_POL 0x101916, BIT10

#define GPIO_EXT6_CLR 0x10191e, BIT10

#define GPIO_EXT6_STS 0x10191e, BIT10

#define GPIO_EXT7_MSK 0x10190e, BIT15

#define GPIO_EXT7_POL 0x101916, BIT15

#define GPIO_EXT7_CLR 0x10191e, BIT15

#define GPIO_EXT7_STS 0x10191e, BIT15

例如 PAD_IRIN，PAD_CEC0，PAD_PWM_PM是pin id，在 vendor\mstar\kernel\linaro\mstar2\hal\m7221\gpio\mhal_gpio_reg.h 中定义：

#define PAD_IRIN 0

#define PAD_CEC0 1

#define PAD_PWM_PM 2

#define PAD_DDCA_CK 3

#define PAD_DDCA_DA 4

#define PAD_GPIO0_PM 5

#define PAD_GPIO1_PM 6

#define PAD_GPIO2_PM 7

#define PAD_USB_CTRL 8

#define PAD_GPIO5_PM 9

#define PAD_GPIO6_PM 10

#define PAD_GPIO7_PM 11

#define PAD_GPIO8_PM 12

#define PAD_GPIO9_PM 13

#define PAD_GPIO10_PM 14

#define PAD_GPIO11_PM 15

#define PAD_GPIO12_PM 16

#define PAD_HOTPLUGA 17

#define PAD_HOTPLUGB 18

#define PAD_HOTPLUGC 19

#define PAD_HOTPLUGA_HDMI20_5V 20

#define PAD_HOTPLUGB_HDMI20_5V 21

#define PAD_HOTPLUGC_HDMI20_5V 22

#define PAD_DDCDA_CK 23

#define PAD_DDCDA_DA 24

#define PAD_DDCDB_CK 25

#define PAD_DDCDB_DA 26

#define PAD_DDCDC_CK 27

#define PAD_DDCDC_DA 28

#define PAD_SAR0 29

#define PAD_SAR1 30

#define PAD_SAR2 31

#define PAD_SAR3 32

#define PAD_SAR4 33

#define PAD_VPLUGIN 34

#define PAD_VID0 35

#define PAD_VID1 36

#define PAD_VID2 37

#define PAD_VID3 38

#define PAD_WOL_INT_OUT 39

#define PAD_I2S_IN_BCK 40

#define PAD_I2S_IN_WS 41

#define PAD_I2S_IN_MCK 42

#define PAD_I2S_IN_SD0 43

#define PAD_I2S_IN_SD1 44

#define PAD_CILINK_DEMOD0_CLK 45

#define PAD_CILINK_DEMOD1_CLK 46

#define PAD_CILINK_INT 47

#define PAD_CILINK_RX0_D0 48

#define PAD_CILINK_RX0_D1 49

#define PAD_CILINK_RX1_D0 50

#define PAD_CILINK_RX1_D1 51

#define PAD_CILINK_RX_CLK 52

#define PAD_CILINK_SPI_CLK 53

#define PAD_CILINK_SPI_CS 54

#define PAD_CILINK_SPI_MISO 55

#define PAD_CILINK_SPI_MOSI 56

#define PAD_CILINK_TX0_D0 57

#define PAD_CILINK_TX0_D1 58

#define PAD_CILINK_TX1_D0 59

#define PAD_CILINK_TX1_D1 60

#define PAD_CILINK_TX_CLK 61

#define PAD_DDCR_CK 62

#define PAD_DDCR_DA 63

#define PAD_GPIO2 64

#define PAD_GPIO3 65

#define PAD_GPIO4 66

#define PAD_GPIO5 67

#define PAD_GPIO9 68

#define PAD_GPIO10 69

#define PAD_GPIO11 70

#define PAD_GPIO12 71

#define PAD_GPIO19 72

#define PAD_GPIO20 73

#define PAD_GPIO25 74

#define PAD_GPIO26 75

#define PAD_GPIO30 76

#define PAD_GPIO31 77

#define PAD_HDMIRX_ARCTX 78

#define PAD_I2S_OUT_BCK 79

#define PAD_I2S_OUT_MCK 80

#define PAD_I2S_OUT_SD 81

#define PAD_I2S_OUT_SD1 82

#define PAD_I2S_OUT_SD2 83

#define PAD_I2S_OUT_WS 84

#define PAD_PWM0 85

#define PAD_PWM1 86

#define PAD_PWM2 87

#define PAD_PWM3 88

#define PAD_SD_CLK 89

#define PAD_SD_CMD 90

#define PAD_SD_D0 91

#define PAD_SD_D1 92

#define PAD_SD_D2 93

#define PAD_SD_D3 94

#define PAD_SPDIF_IN 95

#define PAD_SPDIF_OUT 96

#define PAD_TGPIO0 97

#define PAD_TGPIO1 98

#define PAD_TGPIO2 99

#define PAD_TGPIO3 100

#define PAD_TS1_CLK 101

#define PAD_TS1_D0 102

#define PAD_TS1_D1 103

#define PAD_TS1_D2 104

#define PAD_TS1_D3 105

#define PAD_TS1_D4 106

#define PAD_TS1_D5 107

#define PAD_TS1_D6 108

#define PAD_TS1_D7 109

#define PAD_TS1_SYNC 110

#define PAD_TS1_VLD 111

#define PAD_TS2_CLK 112

#define PAD_TS2_D0 113

#define PAD_TS2_SYNC 114

#define PAD_TS2_VLD 115

#define GPIO_OEN 0 //set o to nake output

#define GPIO_ODN 1

#define IN_HIGH 1 //input high

#define IN_LOW 0 //input low

#define OUT_HIGH 1 //output high

#define OUT_LOW 0 //output low

4. pin id 与芯片管脚映射

以GPIO16 为例：

vendor\mstar\kernel\linaro\mstar2\hal\m7221\gpio\mhal_gpio.c

#define GPIO16_PAD PAD_GPIO12_PM

supernova\projects\board\m7221\ChipInfo\MSD96BUXM8.h

#define BALL_U3 PAD_GPIO12_PM

#define PAD_GPIO12_PM 17

#define GPIO_PAD_17 GPIO16#ifndef BALL_U3_IS_GPIO#define BALL_U3_IS_GPIO 0

#endif #ifndef PAD_GPIO12_PM_IS_GPIO#define PAD_GPIO12_PM_IS_GPIO BALL_U3_IS_GPIO

#endif

其中BALL_U3即为芯片的管脚