[PATCH V3 1/4] spi: lpspi: Replace all "master" with "controller"

Clark Wang
2018-12-07T02:50:42Z

In order to enable the slave mode and make the code more readable,
replace all related structure names and object names which is
named "master" with "controller".

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
---
Change log:
V2/V3:
- No change.
---
drivers/spi/spi-fsl-lpspi.c | 84 ++++++++++++++++++++-----------------
1 file changed, 46 insertions(+), 38 deletions(-)

diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index 51670976faa3..725d6ac5f814 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -3,6 +3,7 @@
// Freescale i.MX7ULP LPSPI driver
//
// Copyright 2016 Freescale Semiconductor, Inc.
+// Copyright 2018 NXP Semiconductors

#include <linux/clk.h>
#include <linux/completion.h>
@@ -137,16 +138,18 @@ static void fsl_lpspi_intctrl(struct fsl_lpspi_data *fsl_lpspi,
writel(enable, fsl_lpspi->base + IMX7ULP_IER);
}

-static int lpspi_prepare_xfer_hardware(struct spi_master *master)
+static int lpspi_prepare_xfer_hardware(struct spi_controller *controller)
{
- struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
+ struct fsl_lpspi_data *fsl_lpspi =
+ spi_controller_get_devdata(controller);

return clk_prepare_enable(fsl_lpspi->clk);
}

-static int lpspi_unprepare_xfer_hardware(struct spi_master *master)
+static int lpspi_unprepare_xfer_hardware(struct spi_controller *controller)
{
- struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
+ struct fsl_lpspi_data *fsl_lpspi =
+ spi_controller_get_devdata(controller);

clk_disable_unprepare(fsl_lpspi->clk);

@@ -291,7 +294,8 @@ static int fsl_lpspi_config(struct fsl_lpspi_data *fsl_lpspi)
static void fsl_lpspi_setup_transfer(struct spi_device *spi,
struct spi_transfer *t)
{
- struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(spi->master);
+ struct fsl_lpspi_data *fsl_lpspi =
+ spi_controller_get_devdata(spi->controller);

fsl_lpspi->config.mode = spi->mode;
fsl_lpspi->config.bpw = t ? t->bits_per_word : spi->bits_per_word;
@@ -318,11 +322,12 @@ static void fsl_lpspi_setup_transfer(struct spi_device *spi,
fsl_lpspi_config(fsl_lpspi);
}

-static int fsl_lpspi_transfer_one(struct spi_master *master,
+static int fsl_lpspi_transfer_one(struct spi_controller *controller,
struct spi_device *spi,
struct spi_transfer *t)
{
- struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
+ struct fsl_lpspi_data *fsl_lpspi =
+ spi_controller_get_devdata(controller);
int ret;

fsl_lpspi->tx_buf = t->tx_buf;
@@ -347,10 +352,11 @@ static int fsl_lpspi_transfer_one(struct spi_master *master,
return 0;
}

-static int fsl_lpspi_transfer_one_msg(struct spi_master *master,
+static int fsl_lpspi_transfer_one_msg(struct spi_controller *controller,
struct spi_message *msg)
{
- struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
+ struct fsl_lpspi_data *fsl_lpspi =
+ spi_controller_get_devdata(controller);
struct spi_device *spi = msg->spi;
struct spi_transfer *xfer;
bool is_first_xfer = true;
@@ -366,7 +372,7 @@ static int fsl_lpspi_transfer_one_msg(struct spi_master *master,

is_first_xfer = false;

- ret = fsl_lpspi_transfer_one(master, spi, xfer);
+ ret = fsl_lpspi_transfer_one(controller, spi, xfer);
if (ret < 0)
goto complete;

@@ -380,7 +386,7 @@ static int fsl_lpspi_transfer_one_msg(struct spi_master *master,
writel(temp, fsl_lpspi->base + IMX7ULP_TCR);

msg->status = ret;
- spi_finalize_current_message(master);
+ spi_finalize_current_message(controller);

return ret;
}
@@ -410,30 +416,31 @@ static irqreturn_t fsl_lpspi_isr(int irq, void *dev_id)
static int fsl_lpspi_probe(struct platform_device *pdev)
{
struct fsl_lpspi_data *fsl_lpspi;
- struct spi_master *master;
+ struct spi_controller *controller;
struct resource *res;
int ret, irq;
u32 temp;

- master = spi_alloc_master(&pdev->dev, sizeof(struct fsl_lpspi_data));
- if (!master)
+ controller = spi_alloc_master(&pdev->dev,
+ sizeof(struct fsl_lpspi_data));
+ if (!controller)
return -ENOMEM;

- platform_set_drvdata(pdev, master);
+ platform_set_drvdata(pdev, controller);

- master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32);
- master->bus_num = pdev->id;
+ controller->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32);
+ controller->bus_num = pdev->id;

- fsl_lpspi = spi_master_get_devdata(master);
+ fsl_lpspi = spi_controller_get_devdata(controller);
fsl_lpspi->dev = &pdev->dev;

- master->transfer_one_message = fsl_lpspi_transfer_one_msg;
- master->prepare_transfer_hardware = lpspi_prepare_xfer_hardware;
- master->unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware;
- master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
- master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX;
- master->dev.of_node = pdev->dev.of_node;
- master->bus_num = pdev->id;
+ controller->transfer_one_message = fsl_lpspi_transfer_one_msg;
+ controller->prepare_transfer_hardware = lpspi_prepare_xfer_hardware;
+ controller->unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware;
+ controller->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
+ controller->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX;
+ controller->dev.of_node = pdev->dev.of_node;
+ controller->bus_num = pdev->id;

init_completion(&fsl_lpspi->xfer_done);

@@ -441,32 +448,32 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
fsl_lpspi->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(fsl_lpspi->base)) {
ret = PTR_ERR(fsl_lpspi->base);
- goto out_master_put;
+ goto out_controller_put;
}

irq = platform_get_irq(pdev, 0);
if (irq < 0) {
ret = irq;
- goto out_master_put;
+ goto out_controller_put;
}

ret = devm_request_irq(&pdev->dev, irq, fsl_lpspi_isr, 0,
dev_name(&pdev->dev), fsl_lpspi);
if (ret) {
dev_err(&pdev->dev, "can't get irq%d: %d\n", irq, ret);
- goto out_master_put;
+ goto out_controller_put;
}

fsl_lpspi->clk = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(fsl_lpspi->clk)) {
ret = PTR_ERR(fsl_lpspi->clk);
- goto out_master_put;
+ goto out_controller_put;
}

ret = clk_prepare_enable(fsl_lpspi->clk);
if (ret) {
dev_err(&pdev->dev, "can't enable lpspi clock, ret=%d\n", ret);
- goto out_master_put;
+ goto out_controller_put;
}

temp = readl(fsl_lpspi->base + IMX7ULP_PARAM);
@@ -475,24 +482,25 @@ static int fsl_lpspi_probe(struct platform_device *pdev)

clk_disable_unprepare(fsl_lpspi->clk);

- ret = devm_spi_register_master(&pdev->dev, master);
+ ret = devm_spi_register_controller(&pdev->dev, controller);
if (ret < 0) {
- dev_err(&pdev->dev, "spi_register_master error.\n");
- goto out_master_put;
+ dev_err(&pdev->dev, "spi_register_controller error.\n");
+ goto out_controller_put;
}

return 0;

-out_master_put:
- spi_master_put(master);
+out_controller_put:
+ spi_controller_put(controller);

return ret;
}

static int fsl_lpspi_remove(struct platform_device *pdev)
{
- struct spi_master *master = platform_get_drvdata(pdev);
- struct fsl_lpspi_data *fsl_lpspi = spi_master_get_devdata(master);
+ struct spi_controller *controller = platform_get_drvdata(pdev);
+ struct fsl_lpspi_data *fsl_lpspi =
+ spi_controller_get_devdata(controller);

clk_disable_unprepare(fsl_lpspi->clk);

@@ -509,6 +517,6 @@ static struct platform_driver fsl_lpspi_driver = {
};
module_platform_driver(fsl_lpspi_driver);

-MODULE_DESCRIPTION("LPSPI Master Controller driver");
+MODULE_DESCRIPTION("LPSPI Controller driver");
MODULE_AUTHOR("Gao Pan <pandy.gao@nxp.com>");
MODULE_LICENSE("GPL");
--
2.17.1