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Commit 07d71557 authored by Clark Wang's avatar Clark Wang Committed by Mark Brown
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spi: lpspi: Replace all "master" with "controller" 

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: default avatarClark Wang <xiaoning.wang@nxp.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 3f75720d
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Inline Side-by-side
Showing with 46 additions and 38 deletions
drivers/spi/spi-fsl-lpspi.c
View file @ 07d71557
......@@ -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");
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