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risc-v/bl808: Add I2C driver #15332

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Dec 25, 2024
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risc-v/bl808: Add I2C driver #15332

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2 changes: 1 addition & 1 deletion Documentation/platforms/risc-v/bl808/index.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ DMA No
EMAC No
GPADC Yes
GPIO Yes
I2C No
I2C Yes
I2S No
PWM No
SPI Yes
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4 changes: 4 additions & 0 deletions arch/risc-v/include/bl808/irq.h
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Expand Up @@ -54,6 +54,8 @@
/* D0 IRQs ******************************************************************/

#define BL808_IRQ_UART3 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + 4)
#define BL808_IRQ_I2C2 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + 5)
#define BL808_IRQ_I2C3 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + 6)
#define BL808_IRQ_SPI1 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + 7)
#define BL808_IRQ_D0_IPC (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + 38)
#define BL808_IRQ_TIMER1_CH0 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + 61)
Expand All @@ -68,8 +70,10 @@
#define BL808_IRQ_UART0 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 28)
#define BL808_IRQ_UART1 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 29)
#define BL808_IRQ_UART2 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 30)
#define BL808_IRQ_I2C0 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 32)
#define BL808_IRQ_TIMER0_CH0 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 36)
#define BL808_IRQ_TIMER0_CH1 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 37)
#define BL808_IRQ_WDT0 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 38)
#define BL808_IRQ_I2C1 (RISCV_IRQ_SEXT + BL808_IRQ_NUM_BASE + BL808_M0_IRQ_OFFSET + 39)

#endif /* __ARCH_RISCV_INCLUDE_BL808_IRQ_H */
92 changes: 92 additions & 0 deletions arch/risc-v/src/bl808/Kconfig
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Expand Up @@ -106,6 +106,98 @@ config BL808_GPADC_SCAN_ORD11

endmenu

menuconfig BL808_I2C0
bool "I2C 0"
default n
select I2C
select I2C_DRIVER
select ARCH_HAVE_I2CRESET

if BL808_I2C0

comment "Refer to datasheet for valid pin assignments"

config BL808_I2C0_SCL
int "SCL Pin"
default 6
range 0 45

config BL808_I2C0_SDA
int "SDA Pin"
default 7
range 0 45

endif

menuconfig BL808_I2C1
bool "I2C 1"
default n
select I2C
select I2C_DRIVER
select ARCH_HAVE_I2CRESET

if BL808_I2C1

comment "Refer to datasheet for valid pin assignments"

config BL808_I2C1_SCL
int "SCL Pin"
default 6
range 0 45

config BL808_I2C1_SDA
int "SDA Pin"
default 7
range 0 45

endif

menuconfig BL808_I2C2
bool "I2C 2"
default n
select I2C
select I2C_DRIVER
select ARCH_HAVE_I2CRESET

if BL808_I2C2

comment "Refer to datasheet for valid pin assignments"

config BL808_I2C2_SCL
int "SCL Pin"
default 6
range 0 45

config BL808_I2C2_SDA
int "SDA Pin"
default 7
range 0 45

endif

menuconfig BL808_I2C3
bool "I2C 3"
default n
select I2C
select I2C_DRIVER
select ARCH_HAVE_I2CRESET

if BL808_I2C3

comment "Refer to datasheet for valid pin assignments"

config BL808_I2C3_SCL
int "SCL Pin"
default 6
range 0 45

config BL808_I2C3_SDA
int "SDA Pin"
default 7
range 0 45

endif

config BL808_UART0
bool "UART 0"
default n
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1 change: 1 addition & 0 deletions arch/risc-v/src/bl808/Make.defs
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Expand Up @@ -31,3 +31,4 @@ CHIP_CSRCS = bl808_start.c bl808_irq_dispatch.c bl808_irq.c
CHIP_CSRCS += bl808_timerisr.c bl808_allocateheap.c
CHIP_CSRCS += bl808_gpio.c bl808_mm_init.c bl808_pgalloc.c bl808_serial.c
CHIP_CSRCS += bl808_gpadc.c bl808_spi.c bl808_timer.c bl808_wdt.c
CHIP_CSRCS += bl808_i2c.c
7 changes: 5 additions & 2 deletions arch/risc-v/src/bl808/bl808_gpio.h
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Original file line number Diff line number Diff line change
Expand Up @@ -58,8 +58,8 @@

#define GPIO_MODE_SHIFT (10) /* Bit 10: Port Mode */
#define GPIO_MODE_MASK (1 << GPIO_MODE_SHIFT)
# define GPIO_INPUT (1 << GPIO_MODE_SHIFT) /* Input Enable */
# define GPIO_OUTPUT (0 << GPIO_MODE_SHIFT) /* Output Enable */
#define GPIO_INPUT (1 << GPIO_MODE_SHIFT) /* Input Enable */
#define GPIO_OUTPUT (0 << GPIO_MODE_SHIFT) /* Output Enable */

/* Input/Output pull-ups/downs:
*
Expand Down Expand Up @@ -116,13 +116,16 @@
#define GPIO_FUNC_SDH (0 << GPIO_FUNC_SHIFT) /* SDH */
#define GPIO_FUNC_SPI0 (1 << GPIO_FUNC_SHIFT) /* SPI0 */
#define GPIO_FUNC_FLASH (2 << GPIO_FUNC_SHIFT) /* Flash */
#define GPIO_FUNC_I2C0 (5 << GPIO_FUNC_SHIFT) /* I2C0 */
#define GPIO_FUNC_I2C1 (6 << GPIO_FUNC_SHIFT) /* I2C1 */
#define GPIO_FUNC_UART (7 << GPIO_FUNC_SHIFT) /* UART */
#define GPIO_FUNC_CAM (9 << GPIO_FUNC_SHIFT) /* CSI */
#define GPIO_FUNC_ANA (10 << GPIO_FUNC_SHIFT) /* Analog */
#define GPIO_FUNC_SWGPIO (11 << GPIO_FUNC_SHIFT) /* Software GPIO */
#define GPIO_FUNC_PWM0 (16 << GPIO_FUNC_SHIFT) /* PWM0 */
#define GPIO_FUNC_SPI1 (18 << GPIO_FUNC_SHIFT) /* SPI1 */
#define GPIO_FUNC_I2C2 (19 << GPIO_FUNC_SHIFT) /* I2C2 */
#define GPIO_FUNC_I2C3 (20 << GPIO_FUNC_SHIFT) /* I2C3 */
#define GPIO_FUNC_JTAG_D0 (27 << GPIO_FUNC_SHIFT) /* JTAG */

/****************************************************************************
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