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dts: ieee802154: cc1200: Add DTS support

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Add a dts binding file for the cc1200 and move the Kconfig options for
SPI and GPIOs to DTS for the CC1200 driver.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2018-11-19 17:27:28 -06:00 • committed by Kumar Gala
commit 1fe9a5b8d8
3 changed files with 30 additions and 44 deletions
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36
drivers/ieee802154/Kconfig.cc1200
View file

@ -14,48 +14,12 @@ config IEEE802154_CC1200_DRV_NAME
help
This option sets the driver name
config IEEE802154_CC1200_SPI_DRV_NAME
string "SPI driver's name to use to access CC1200"
help
This option is mandatory to set which SPI controller to use in order
to actually control the CC1200 chip.
config IEEE802154_CC1200_SPI_FREQ
int "SPI system frequency"
default 0
help
This option sets the SPI controller's frequency. Beware this value
depends on the SPI controller being used and also on the system
clock.
config IEEE802154_CC1200_SPI_SLAVE
int "SPI slave linked to CC1200"
default 0
help
This option sets the SPI slave number SPI controller has to switch
to when dealing with CC1200 chip.
config IEEE802154_CC1200_GPIO_SPI_CS
bool "Manage SPI CS through a GPIO pin"
help
This option is useful if one needs to manage SPI CS through a GPIO
pin to by-pass the SPI controller's CS logic.
config IEEE802154_CC1200_GPIO_SPI_CS_DRV_NAME
string "GPIO driver's name to use to drive SPI CS through"
depends on IEEE802154_CC1200_GPIO_SPI_CS
help
This option is mandatory to set which GPIO controller to use in order
to actually emulate the SPI CS.
config IEEE802154_CC1200_GPIO_SPI_CS_PIN
int "GPIO PIN to use to drive SPI CS through"
default 0
depends on IEEE802154_CC1200_GPIO_SPI_CS
help
This option is mandatory to set which GPIO pin to use in order
to actually emulate the SPI CS.
config IEEE802154_CC1200_RX_STACK_SIZE
int "Driver's internal RX thread stack size"
default 800

15
drivers/ieee802154/ieee802154_cc1200.c
View file

@ -744,8 +744,7 @@ static int configure_spi(struct device *dev)
{
struct cc1200_context *cc1200 = dev->driver_data;
cc1200->spi = device_get_binding(
CONFIG_IEEE802154_CC1200_SPI_DRV_NAME);
cc1200->spi = device_get_binding(DT_IEEE802154_CC1200_SPI_DRV_NAME);
if (!cc1200->spi) {
LOG_ERR("Unable to get SPI device");
return -ENODEV;
@ -753,25 +752,25 @@ static int configure_spi(struct device *dev)
if (IS_ENABLED(CONFIG_IEEE802154_CC1200_GPIO_SPI_CS)) {
cs_ctrl.gpio_dev = device_get_binding(
CONFIG_IEEE802154_CC1200_GPIO_SPI_CS_DRV_NAME);
DT_IEEE802154_CC1200_GPIO_SPI_CS_DRV_NAME);
if (!cs_ctrl.gpio_dev) {
LOG_ERR("Unable to get GPIO SPI CS device");
return -ENODEV;
}
cs_ctrl.gpio_pin = CONFIG_IEEE802154_CC1200_GPIO_SPI_CS_PIN;
cs_ctrl.gpio_pin = DT_IEEE802154_CC1200_GPIO_SPI_CS_PIN;
cs_ctrl.delay = 0;
cc1200->spi_cfg.cs = &cs_ctrl;
LOG_DBG("SPI GPIO CS configured on %s:%u",
CONFIG_IEEE802154_CC1200_GPIO_SPI_CS_DRV_NAME,
CONFIG_IEEE802154_CC1200_GPIO_SPI_CS_PIN);
DT_IEEE802154_CC1200_GPIO_SPI_CS_DRV_NAME,
DT_IEEE802154_CC1200_GPIO_SPI_CS_PIN);
}
cc1200->spi_cfg.operation = SPI_WORD_SET(8);
cc1200->spi_cfg.frequency = CONFIG_IEEE802154_CC1200_SPI_FREQ;
cc1200->spi_cfg.slave = CONFIG_IEEE802154_CC1200_SPI_SLAVE;
cc1200->spi_cfg.frequency = DT_IEEE802154_CC1200_SPI_FREQ;
cc1200->spi_cfg.slave = DT_IEEE802154_CC1200_SPI_SLAVE;
return 0;
}

23
dts/bindings/ieee802154/ti,cc1200.yaml Normal file
View file

@ -0,0 +1,23 @@
#
# Copyright (c) 2018, Linaro Limited
#
# SPDX-License-Identifier: Apache-2.0
#
---
title: CC1200 802.15.4 Wireless Transceiver
version: 0.1
description: >
This is a representation of the CC1200 wireless transceiver.
inherits:
!include spi-device.yaml
properties:
compatible:
type: string
category: required
description: compatible strings
constraint: "ti,cc1200"
...