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i2c: Add SET_BUS_DATA control commands to update default bus timings #80

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Merged
kwd-doodling merged 1 commit into from
Apr 30, 2026
+32 −0
Merged

i2c: Add SET_BUS_DATA control commands to update default bus timings #80

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19 changes: 19 additions & 0 deletions bsp_sedi/drivers/i2c/sedi_i2c_dw_apb_200a.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1126,6 +1126,25 @@ int32_t sedi_i2c_control(IN sedi_i2c_t i2c_device, IN uint32_t control, IN uint3
case SEDI_I2C_SET_RX_MEMORY_TYPE:
context->rx_memory_type = arg;
break;
case SEDI_I2C_SET_BUS_DATA_STD:
case SEDI_I2C_SET_BUS_DATA_FST:
case SEDI_I2C_SET_BUS_DATA_FSP:
case SEDI_I2C_SET_BUS_DATA_HIGH:
{
const sedi_i2c_bus_clk_t *bus_clk = (const sedi_i2c_bus_clk_t *)arg;
sedi_i2c_bus_clk_t *bus_clk_ptr = &context->bus_info.std_clk;
uint32_t idx = control - SEDI_I2C_SET_BUS_DATA_STD;

DBG_CHECK(NULL != bus_clk, SEDI_DRIVER_ERROR_PARAMETER);
DBG_CHECK(idx < sizeof(context->bus_info) / sizeof(sedi_i2c_bus_clk_t),
SEDI_DRIVER_ERROR_PARAMETER);

bus_clk_ptr = bus_clk_ptr + idx;
bus_clk_ptr->sda_hold = LBW_CLK_MHZ * bus_clk->sda_hold / NS_PER_US;
bus_clk_ptr->hcnt = LBW_CLK_MHZ * bus_clk->hcnt / NS_PER_US;
bus_clk_ptr->lcnt = LBW_CLK_MHZ * bus_clk->lcnt / NS_PER_US;
}
break;
default:
ret = SEDI_DRIVER_ERROR;
break;
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13 changes: 13 additions & 0 deletions bsp_sedi/include/driver/sedi_driver_i2c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,19 @@ extern "C" {
*/
#define SEDI_I2C_SET_RX_MEMORY_TYPE (0x06)

/*!
* \def SEDI_I2C_SET_BUS_DATA_STD/_FST/_FSP/_HIGH
* \brief Update cached bus timing data for a speed mode.
*
* The new timing values are stored in the driver context and take effect
* the next time the corresponding bus speed is selected through
* SEDI_I2C_BUS_SPEED.
*/
#define SEDI_I2C_SET_BUS_DATA_STD (0x0B)
#define SEDI_I2C_SET_BUS_DATA_FST (SEDI_I2C_SET_BUS_DATA_STD + 1)
#define SEDI_I2C_SET_BUS_DATA_FSP (SEDI_I2C_SET_BUS_DATA_STD + 2)
#define SEDI_I2C_SET_BUS_DATA_HIGH (SEDI_I2C_SET_BUS_DATA_STD + 3)

/*!
* \}
*/
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