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path: root/drivers/spi/spi-gpio.c
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Diffstat (limited to 'drivers/spi/spi-gpio.c')
-rw-r--r--drivers/spi/spi-gpio.c77
1 files changed, 38 insertions, 39 deletions
diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c
index 092afc7679d4..d8db4564b406 100644
--- a/drivers/spi/spi-gpio.c
+++ b/drivers/spi/spi-gpio.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
- * SPI master driver using generic bitbanged GPIO
+ * SPI host driver using generic bitbanged GPIO
*
* Copyright (C) 2006,2008 David Brownell
* Copyright (C) 2017 Linus Walleij
@@ -10,7 +10,6 @@
#include <linux/platform_device.h>
#include <linux/gpio/consumer.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
@@ -18,7 +17,7 @@
/*
- * This bitbanging SPI master driver should help make systems usable
+ * This bitbanging SPI host driver should help make systems usable
* when a native hardware SPI engine is not available, perhaps because
* its driver isn't yet working or because the I/O pins it requires
* are used for other purposes.
@@ -27,7 +26,7 @@
*
* spi->controller_state ... reserved for bitbang framework code
*
- * spi->master->dev.driver_data ... points to spi_gpio->bitbang
+ * spi->controller->dev.driver_data ... points to spi_gpio->bitbang
*/
struct spi_gpio {
@@ -78,7 +77,7 @@ spi_to_spi_gpio(const struct spi_device *spi)
const struct spi_bitbang *bang;
struct spi_gpio *spi_gpio;
- bang = spi_master_get_devdata(spi->master);
+ bang = spi_controller_get_devdata(spi->controller);
spi_gpio = container_of(bang, struct spi_gpio, bitbang);
return spi_gpio;
}
@@ -170,7 +169,7 @@ static u32 spi_gpio_txrx_word_mode3(struct spi_device *spi,
/*
* These functions do not call setmosi or getmiso if respective flag
- * (SPI_MASTER_NO_RX or SPI_MASTER_NO_TX) is set, so they are safe to
+ * (SPI_CONTROLLER_NO_RX or SPI_CONTROLLER_NO_TX) is set, so they are safe to
* call when such pin is not present or defined in the controller.
* A separate set of callbacks is defined to get highest possible
* speed in the generic case (when both MISO and MOSI lines are
@@ -181,7 +180,7 @@ static u32 spi_gpio_txrx_word_mode3(struct spi_device *spi,
static u32 spi_gpio_spec_txrx_word_mode0(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits, unsigned flags)
{
- flags = spi->master->flags;
+ flags = spi->controller->flags;
if (unlikely(spi->mode & SPI_LSB_FIRST))
return bitbang_txrx_le_cpha0(spi, nsecs, 0, flags, word, bits);
else
@@ -191,7 +190,7 @@ static u32 spi_gpio_spec_txrx_word_mode0(struct spi_device *spi,
static u32 spi_gpio_spec_txrx_word_mode1(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits, unsigned flags)
{
- flags = spi->master->flags;
+ flags = spi->controller->flags;
if (unlikely(spi->mode & SPI_LSB_FIRST))
return bitbang_txrx_le_cpha1(spi, nsecs, 0, flags, word, bits);
else
@@ -201,7 +200,7 @@ static u32 spi_gpio_spec_txrx_word_mode1(struct spi_device *spi,
static u32 spi_gpio_spec_txrx_word_mode2(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits, unsigned flags)
{
- flags = spi->master->flags;
+ flags = spi->controller->flags;
if (unlikely(spi->mode & SPI_LSB_FIRST))
return bitbang_txrx_le_cpha0(spi, nsecs, 1, flags, word, bits);
else
@@ -211,7 +210,7 @@ static u32 spi_gpio_spec_txrx_word_mode2(struct spi_device *spi,
static u32 spi_gpio_spec_txrx_word_mode3(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits, unsigned flags)
{
- flags = spi->master->flags;
+ flags = spi->controller->flags;
if (unlikely(spi->mode & SPI_LSB_FIRST))
return bitbang_txrx_le_cpha1(spi, nsecs, 1, flags, word, bits);
else
@@ -311,7 +310,7 @@ static void spi_gpio_cleanup(struct spi_device *spi)
* On platforms which can do so, configure MISO with a weak pullup unless
* there's an external pullup on that signal. That saves power by avoiding
* floating signals. (A weak pulldown would save power too, but many
- * drivers expect to see all-ones data as the no slave "response".)
+ * drivers expect to see all-ones data as the no target "response".)
*/
static int spi_gpio_request(struct device *dev, struct spi_gpio *spi_gpio)
{
@@ -335,27 +334,27 @@ static const struct of_device_id spi_gpio_dt_ids[] = {
MODULE_DEVICE_TABLE(of, spi_gpio_dt_ids);
static int spi_gpio_probe_dt(struct platform_device *pdev,
- struct spi_master *master)
+ struct spi_controller *host)
{
- master->dev.of_node = pdev->dev.of_node;
- master->use_gpio_descriptors = true;
+ host->dev.of_node = pdev->dev.of_node;
+ host->use_gpio_descriptors = true;
return 0;
}
#else
static inline int spi_gpio_probe_dt(struct platform_device *pdev,
- struct spi_master *master)
+ struct spi_controller *host)
{
return 0;
}
#endif
static int spi_gpio_probe_pdata(struct platform_device *pdev,
- struct spi_master *master)
+ struct spi_controller *host)
{
struct device *dev = &pdev->dev;
struct spi_gpio_platform_data *pdata = dev_get_platdata(dev);
- struct spi_gpio *spi_gpio = spi_master_get_devdata(master);
+ struct spi_gpio *spi_gpio = spi_controller_get_devdata(host);
int i;
#ifdef GENERIC_BITBANG
@@ -363,18 +362,18 @@ static int spi_gpio_probe_pdata(struct platform_device *pdev,
return -ENODEV;
#endif
/*
- * The master needs to think there is a chipselect even if not
+ * The host needs to think there is a chipselect even if not
* connected
*/
- master->num_chipselect = pdata->num_chipselect ?: 1;
+ host->num_chipselect = pdata->num_chipselect ?: 1;
- spi_gpio->cs_gpios = devm_kcalloc(dev, master->num_chipselect,
+ spi_gpio->cs_gpios = devm_kcalloc(dev, host->num_chipselect,
sizeof(*spi_gpio->cs_gpios),
GFP_KERNEL);
if (!spi_gpio->cs_gpios)
return -ENOMEM;
- for (i = 0; i < master->num_chipselect; i++) {
+ for (i = 0; i < host->num_chipselect; i++) {
spi_gpio->cs_gpios[i] = devm_gpiod_get_index(dev, "cs", i,
GPIOD_OUT_HIGH);
if (IS_ERR(spi_gpio->cs_gpios[i]))
@@ -387,58 +386,58 @@ static int spi_gpio_probe_pdata(struct platform_device *pdev,
static int spi_gpio_probe(struct platform_device *pdev)
{
int status;
- struct spi_master *master;
+ struct spi_controller *host;
struct spi_gpio *spi_gpio;
struct device *dev = &pdev->dev;
struct spi_bitbang *bb;
- master = devm_spi_alloc_master(dev, sizeof(*spi_gpio));
- if (!master)
+ host = devm_spi_alloc_host(dev, sizeof(*spi_gpio));
+ if (!host)
return -ENOMEM;
if (pdev->dev.of_node)
- status = spi_gpio_probe_dt(pdev, master);
+ status = spi_gpio_probe_dt(pdev, host);
else
- status = spi_gpio_probe_pdata(pdev, master);
+ status = spi_gpio_probe_pdata(pdev, host);
if (status)
return status;
- spi_gpio = spi_master_get_devdata(master);
+ spi_gpio = spi_controller_get_devdata(host);
status = spi_gpio_request(dev, spi_gpio);
if (status)
return status;
- master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
- master->mode_bits = SPI_3WIRE | SPI_3WIRE_HIZ | SPI_CPHA | SPI_CPOL |
+ host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
+ host->mode_bits = SPI_3WIRE | SPI_3WIRE_HIZ | SPI_CPHA | SPI_CPOL |
SPI_CS_HIGH | SPI_LSB_FIRST;
if (!spi_gpio->mosi) {
/* HW configuration without MOSI pin
*
- * No setting SPI_MASTER_NO_RX here - if there is only
+ * No setting SPI_CONTROLLER_NO_RX here - if there is only
* a MOSI pin connected the host can still do RX by
* changing the direction of the line.
*/
- master->flags = SPI_MASTER_NO_TX;
+ host->flags = SPI_CONTROLLER_NO_TX;
}
- master->bus_num = pdev->id;
- master->setup = spi_gpio_setup;
- master->cleanup = spi_gpio_cleanup;
+ host->bus_num = pdev->id;
+ host->setup = spi_gpio_setup;
+ host->cleanup = spi_gpio_cleanup;
bb = &spi_gpio->bitbang;
- bb->master = master;
+ bb->master = host;
/*
* There is some additional business, apart from driving the CS GPIO
* line, that we need to do on selection. This makes the local
* callback for chipselect always get called.
*/
- master->flags |= SPI_MASTER_GPIO_SS;
+ host->flags |= SPI_CONTROLLER_GPIO_SS;
bb->chipselect = spi_gpio_chipselect;
bb->set_line_direction = spi_gpio_set_direction;
- if (master->flags & SPI_MASTER_NO_TX) {
+ if (host->flags & SPI_CONTROLLER_NO_TX) {
bb->txrx_word[SPI_MODE_0] = spi_gpio_spec_txrx_word_mode0;
bb->txrx_word[SPI_MODE_1] = spi_gpio_spec_txrx_word_mode1;
bb->txrx_word[SPI_MODE_2] = spi_gpio_spec_txrx_word_mode2;
@@ -455,7 +454,7 @@ static int spi_gpio_probe(struct platform_device *pdev)
if (status)
return status;
- return devm_spi_register_master(&pdev->dev, master);
+ return devm_spi_register_controller(&pdev->dev, host);
}
MODULE_ALIAS("platform:" DRIVER_NAME);
@@ -469,6 +468,6 @@ static struct platform_driver spi_gpio_driver = {
};
module_platform_driver(spi_gpio_driver);
-MODULE_DESCRIPTION("SPI master driver using generic bitbanged GPIO ");
+MODULE_DESCRIPTION("SPI host driver using generic bitbanged GPIO ");
MODULE_AUTHOR("David Brownell");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 21:07:53 +0300