diff options
Diffstat (limited to 'driver/ioexpander/ccgxxf.c')
| -rw-r--r-- | driver/ioexpander/ccgxxf.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/driver/ioexpander/ccgxxf.c b/driver/ioexpander/ccgxxf.c deleted file mode 100644 index ac079d7b2f..0000000000 --- a/driver/ioexpander/ccgxxf.c +++ /dev/null @@ -1,145 +0,0 @@ -/* Copyright 2021 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * Cypress CCGXXF I/O Port expander (built inside PD chip) driver source - */ - -#include "console.h" -#include "i2c.h" -#include "ioexpander.h" - -/* Add after all include files */ -#include "ccgxxf.h" - -#define CPRINTS(format, args...) cprints(CC_GPIO, format, ## args) - -static inline int ccgxxf_read8(int ioex, int reg, int *data) -{ - return i2c_read8(ioex_config[ioex].i2c_host_port, - ioex_config[ioex].i2c_addr_flags, reg, data); -} - -static inline int ccgxxf_update8(int ioex, int reg, uint8_t mask, - enum mask_update_action action) -{ - return i2c_update8(ioex_config[ioex].i2c_host_port, - ioex_config[ioex].i2c_addr_flags, reg, mask, action); -} - -static inline int ccgxxf_write16(int ioex, uint16_t reg, uint16_t data) -{ - return i2c_write16(ioex_config[ioex].i2c_host_port, - ioex_config[ioex].i2c_addr_flags, reg, data); -} - -static int ccgxxf_get_level(int ioex, int port, int mask, int *val) -{ - int rv; - - rv = ccgxxf_read8(ioex, CCGXXF_REG_GPIO_STATUS(port), val); - if (!rv) - *val = !!(*val & mask); - - return rv; -} - -static int ccgxxf_set_level(int ioex, int port, int mask, int val) -{ - return ccgxxf_update8(ioex, CCGXXF_REG_GPIO_CONTROL(port), mask, val); -} - -/* - * Following type of pins are supported - * - Output pins are supported with open-drain & pull-up - * - Input pins are supported with pull-up & pull-down - * - Analog pins - * - 1.8V level GPIOs are supported per port and outputs can only be - * open-drain pins - */ -static int ccgxxf_set_flags_by_mask(int ioex, int port, int mask, int flags) -{ - uint16_t pin_mode; - int rv; - - /* Push-pull output can't be configured for 1.8V level */ - if ((flags & GPIO_OUTPUT) && (flags & GPIO_SEL_1P8V) && - !(flags & GPIO_OPEN_DRAIN)) { - CPRINTS("Invalid flags: ioex=%d, port=%d, mask=%d, flags=0x%x", - ioex, port, mask, flags); - - return EC_ERROR_INVAL; - } - - if (flags & GPIO_OUTPUT) { - if (flags & GPIO_OPEN_DRAIN) { - if (flags & GPIO_PULL_UP) - pin_mode = CCGXXF_GPIO_MODE_RES_UP; - else - pin_mode = CCGXXF_GPIO_MODE_OD_LOW; - } else { - pin_mode = CCGXXF_GPIO_MODE_STRONG; - } - } else if (flags & GPIO_INPUT) { - if (flags & GPIO_PULL_UP) { - pin_mode = CCGXXF_GPIO_MODE_RES_UP; - flags |= GPIO_HIGH; - } else if (flags & GPIO_PULL_DOWN) { - pin_mode = CCGXXF_GPIO_MODE_RES_DWN; - flags |= GPIO_LOW; - } else { - pin_mode = CCGXXF_GPIO_MODE_HIZ_DIGITAL; - } - } else if (flags & GPIO_ANALOG) { - pin_mode = CCGXXF_GPIO_MODE_HIZ_ANALOG; - } else { - return EC_ERROR_INVAL; - } - - pin_mode = port | (pin_mode << CCGXXF_GPIO_PIN_MODE_SHIFT) | - (mask << CCGXXF_GPIO_PIN_MASK_SHIFT); - - /* Note: once set the 1.8V level affect whole GPIO port */ - if (flags & GPIO_SEL_1P8V) - pin_mode |= CCGXXF_GPIO_1P8V_SEL; - - /* - * Before setting the GPIO mode, initilaize the pins to default value - * to avoid spike on pins. - */ - if (flags & (GPIO_HIGH | GPIO_LOW)) { - rv = ccgxxf_set_level(ioex, port, mask, - flags & GPIO_HIGH ? 1 : 0); - if (rv) - return rv; - } - - return ccgxxf_write16(ioex, CCGXXF_REG_GPIO_MODE, pin_mode); -} - -static int ccgxxf_get_flags_by_mask(int ioex, int port, int mask, int *flags) -{ - /* TODO: Add it after implementing in the CCGXXF firmware. */ - return EC_SUCCESS; -} - -static int ccgxxf_enable_interrupt(int ioex, int port, int mask, int enable) -{ - /* CCGXXF doesn't have interrupt capability on I/O expnader pins */ - return EC_ERROR_UNIMPLEMENTED; -} - -int ccgxxf_init(int ioex) -{ - /* TCPC init of CCGXXF should handle initialization */ - return EC_SUCCESS; -} - -const struct ioexpander_drv ccgxxf_ioexpander_drv = { - .init = &ccgxxf_init, - .get_level = &ccgxxf_get_level, - .set_level = &ccgxxf_set_level, - .get_flags_by_mask = &ccgxxf_get_flags_by_mask, - .set_flags_by_mask = &ccgxxf_set_flags_by_mask, - .enable_interrupt = &ccgxxf_enable_interrupt, -}; |