| /* |
| * Copyright (c) 2015 Intel Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file Header for I2C driver for Quark SE Sensor Subsystem |
| */ |
| |
| #ifndef __DRIVERS_I2C_QUARK_SE_SS_H__ |
| #define __DRIVERS_I2C_QUARK_SE_SS_H__ |
| |
| #include <i2c.h> |
| #include <stdbool.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* dev->state values from IC_DATA_CMD Data transfer mode settings (bit 8) */ |
| #define I2C_QSE_SS_STATE_READY (0) |
| #define I2C_QSE_SS_CMD_SEND (1 << 0) |
| #define I2C_QSE_SS_CMD_RECV (1 << 1) |
| #define I2C_QSE_SS_CMD_ERROR (1 << 2) |
| #define I2C_QSE_SS_BUSY (1 << 3) |
| |
| /* |
| * DesignWare speed values don't directly translate from the Zephyr speed |
| * selections in include/i2c.h so here we do a little translation |
| */ |
| #define I2C_QSE_SS_SPEED_STANDARD 0x1 |
| #define I2C_QSE_SS_SPEED_FAST 0x2 |
| #define I2C_QSE_SS_SPEED_FAST_PLUS 0x2 |
| |
| /* IC_CON Low count and high count default values */ |
| /* TODO verify all values for Quark SE SS */ |
| #define I2C_STD_HCNT (CONFIG_I2C_CLOCK_SPEED * 4) |
| #define I2C_STD_LCNT (CONFIG_I2C_CLOCK_SPEED * 5) |
| #define I2C_FS_HCNT ((CONFIG_I2C_CLOCK_SPEED * 6) / 8) |
| #define I2C_FS_LCNT ((CONFIG_I2C_CLOCK_SPEED * 7) / 8) |
| |
| #define I2C_QSE_SS_FIFO_DEPTH 8 |
| |
| typedef void (*i2c_qse_ss_cfg_func_t)(struct device *port); |
| |
| struct i2c_qse_ss_rom_config { |
| uint32_t base_address; |
| |
| i2c_qse_ss_cfg_func_t config_func; |
| }; |
| |
| struct i2c_qse_ss_dev_config { |
| device_sync_call_t sync; |
| union dev_config app_config; |
| |
| volatile uint8_t state; /* last direction of transfer */ |
| |
| uint8_t xfr_flags; |
| |
| uint8_t *xfr_buf; |
| uint32_t xfr_len; |
| uint32_t request_bytes; |
| uint32_t rx_pending; |
| |
| uint16_t hcnt; |
| uint16_t lcnt; |
| }; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* __DRIVERS_I2C_QUARK_SE_SS_H__ */ |