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change(lp_i2c): Added LP I2C low-level control functions for esp32p4

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This MR adds ll functions for clock and reset settings for the LP I2C
peripheral for the esp32p4.
This commit is contained in:
Sudeep Mohanty
2024-03-15 16:34:15 +01:00
parent cd49273d7a
commit 2b5517ed47
1 changed files with 60 additions and 0 deletions
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60
components/hal/esp32p4/include/hal/i2c_ll.h
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@@ -17,6 +17,7 @@
#include "hal/i2c_types.h"
#include "soc/clk_tree_defs.h"
#include "soc/hp_sys_clkrst_struct.h"
#include "soc/lpperi_struct.h"
#include "hal/misc.h"
#ifdef __cplusplus
@@ -796,6 +797,65 @@ static inline void i2c_ll_set_source_clk(i2c_dev_t *hw, i2c_clock_source_t src_c
/// the critical section needs to declare the __DECLARE_RCC_ATOMIC_ENV variable in advance
#define i2c_ll_set_source_clk(...) do {(void)__DECLARE_RCC_ATOMIC_ENV; i2c_ll_set_source_clk(__VA_ARGS__);} while(0)
/**
* @brief Set LP I2C source clock
*
* @param hw Address offset of the LP I2C peripheral registers
* @param src_clk Source clock for the LP I2C peripheral
*/
static inline void lp_i2c_ll_set_source_clk(i2c_dev_t *hw, soc_periph_lp_i2c_clk_src_t src_clk)
{
(void)hw;
// src_clk : (0) for LP_FAST_CLK (RTC Fast), (1) for XTAL_D2_CLK, (2) for LP_PLL
switch (src_clk) {
case LP_I2C_SCLK_LP_FAST:
LPPERI.core_clk_sel.lp_i2c_clk_sel = 0;
break;
case LP_I2C_SCLK_XTAL_D2:
LPPERI.core_clk_sel.lp_i2c_clk_sel = 1;
break;
// case LP_I2C_SCLK_LP_PLL:
// LPPERI.core_clk_sel.lp_i2c_clk_sel = 2;
// break;
default:
// Invalid source clock selected
HAL_ASSERT(false);
}
}
/// LP_AON_CLKRST.lpperi is a shared register, so this function must be used in an atomic way
#define lp_i2c_ll_set_source_clk(...) (void)__DECLARE_RCC_ATOMIC_ENV; lp_i2c_ll_set_source_clk(__VA_ARGS__)
/**
* @brief Enable bus clock for the LP I2C module
*
* @param hw_id LP I2C instance ID
* @param enable True to enable, False to disable
*/
static inline void _lp_i2c_ll_enable_bus_clock(int hw_id, bool enable)
{
(void)hw_id;
LPPERI.clk_en.ck_en_lp_i2c = enable ? 1 : 0;
}
/// LPPERI.clk_en is a shared register, so this function must be used in an atomic way
#define lp_i2c_ll_enable_bus_clock(...) (void)__DECLARE_RCC_ATOMIC_ENV; _lp_i2c_ll_enable_bus_clock(__VA_ARGS__)
/**
* @brief Reset LP I2C module
*
* @param hw_id LP I2C instance ID
*/
static inline void lp_i2c_ll_reset_register(int hw_id)
{
(void)hw_id;
LPPERI.reset_en.rst_en_lp_i2c = 1;
LPPERI.reset_en.rst_en_lp_i2c = 0;
}
/// LPPERI.reset_en is a shared register, so this function must be used in an atomic way
#define lp_i2c_ll_reset_register(...) (void)__DECLARE_RCC_ATOMIC_ENV; lp_i2c_ll_reset_register(__VA_ARGS__)
/**
* @brief Enable I2C peripheral controller clock
*