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path: root/drivers/spi/spi-mxs.c
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Diffstat (limited to 'drivers/spi/spi-mxs.c')
-rw-r--r--drivers/spi/spi-mxs.c90
1 files changed, 46 insertions, 44 deletions
diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 963a53dd680b..0ebcbdb1b1f7 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
//
-// Freescale MXS SPI master driver
+// Freescale MXS SPI host driver
//
// Copyright 2012 DENX Software Engineering, GmbH.
// Copyright 2012 Freescale Semiconductor, Inc.
@@ -39,6 +39,7 @@
#include <linux/spi/spi.h>
#include <linux/spi/mxs-spi.h>
#include <trace/events/spi.h>
+#include <linux/dma/mxs-dma.h>
#define DRIVER_NAME "mxs-spi"
@@ -63,7 +64,7 @@ struct mxs_spi {
static int mxs_spi_setup_transfer(struct spi_device *dev,
const struct spi_transfer *t)
{
- struct mxs_spi *spi = spi_master_get_devdata(dev->master);
+ struct mxs_spi *spi = spi_controller_get_devdata(dev->controller);
struct mxs_ssp *ssp = &spi->ssp;
const unsigned int hz = min(dev->max_speed_hz, t->speed_hz);
@@ -252,7 +253,7 @@ static int mxs_spi_txrx_dma(struct mxs_spi *spi,
desc = dmaengine_prep_slave_sg(ssp->dmach,
&dma_xfer[sg_count].sg, 1,
(flags & TXRX_WRITE) ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
- DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ DMA_PREP_INTERRUPT | MXS_DMA_CTRL_WAIT4END);
if (!desc) {
dev_err(ssp->dev,
@@ -357,10 +358,10 @@ static int mxs_spi_txrx_pio(struct mxs_spi *spi,
return -ETIMEDOUT;
}
-static int mxs_spi_transfer_one(struct spi_master *master,
+static int mxs_spi_transfer_one(struct spi_controller *host,
struct spi_message *m)
{
- struct mxs_spi *spi = spi_master_get_devdata(master);
+ struct mxs_spi *spi = spi_controller_get_devdata(host);
struct mxs_ssp *ssp = &spi->ssp;
struct spi_transfer *t;
unsigned int flag;
@@ -380,12 +381,14 @@ static int mxs_spi_transfer_one(struct spi_master *master,
if (status)
break;
+ t->effective_speed_hz = ssp->clk_rate;
+
/* De-assert on last transfer, inverted by cs_change flag */
flag = (&t->transfer_list == m->transfers.prev) ^ t->cs_change ?
TXRX_DEASSERT_CS : 0;
/*
- * Small blocks can be transfered via PIO.
+ * Small blocks can be transferred via PIO.
* Measured by empiric means:
*
* dd if=/dev/mtdblock0 of=/dev/null bs=1024k count=1
@@ -432,15 +435,15 @@ static int mxs_spi_transfer_one(struct spi_master *master,
}
m->status = status;
- spi_finalize_current_message(master);
+ spi_finalize_current_message(host);
return status;
}
static int mxs_spi_runtime_suspend(struct device *dev)
{
- struct spi_master *master = dev_get_drvdata(dev);
- struct mxs_spi *spi = spi_master_get_devdata(master);
+ struct spi_controller *host = dev_get_drvdata(dev);
+ struct mxs_spi *spi = spi_controller_get_devdata(host);
struct mxs_ssp *ssp = &spi->ssp;
int ret;
@@ -460,8 +463,8 @@ static int mxs_spi_runtime_suspend(struct device *dev)
static int mxs_spi_runtime_resume(struct device *dev)
{
- struct spi_master *master = dev_get_drvdata(dev);
- struct mxs_spi *spi = spi_master_get_devdata(master);
+ struct spi_controller *host = dev_get_drvdata(dev);
+ struct mxs_spi *spi = spi_controller_get_devdata(host);
struct mxs_ssp *ssp = &spi->ssp;
int ret;
@@ -476,12 +479,12 @@ static int mxs_spi_runtime_resume(struct device *dev)
return ret;
}
-static int __maybe_unused mxs_spi_suspend(struct device *dev)
+static int mxs_spi_suspend(struct device *dev)
{
- struct spi_master *master = dev_get_drvdata(dev);
+ struct spi_controller *host = dev_get_drvdata(dev);
int ret;
- ret = spi_master_suspend(master);
+ ret = spi_controller_suspend(host);
if (ret)
return ret;
@@ -491,9 +494,9 @@ static int __maybe_unused mxs_spi_suspend(struct device *dev)
return 0;
}
-static int __maybe_unused mxs_spi_resume(struct device *dev)
+static int mxs_spi_resume(struct device *dev)
{
- struct spi_master *master = dev_get_drvdata(dev);
+ struct spi_controller *host = dev_get_drvdata(dev);
int ret;
if (!pm_runtime_suspended(dev))
@@ -503,7 +506,7 @@ static int __maybe_unused mxs_spi_resume(struct device *dev)
if (ret)
return ret;
- ret = spi_master_resume(master);
+ ret = spi_controller_resume(host);
if (ret < 0 && !pm_runtime_suspended(dev))
mxs_spi_runtime_suspend(dev);
@@ -511,9 +514,8 @@ static int __maybe_unused mxs_spi_resume(struct device *dev)
}
static const struct dev_pm_ops mxs_spi_pm = {
- SET_RUNTIME_PM_OPS(mxs_spi_runtime_suspend,
- mxs_spi_runtime_resume, NULL)
- SET_SYSTEM_SLEEP_PM_OPS(mxs_spi_suspend, mxs_spi_resume)
+ RUNTIME_PM_OPS(mxs_spi_runtime_suspend, mxs_spi_runtime_resume, NULL)
+ SYSTEM_SLEEP_PM_OPS(mxs_spi_suspend, mxs_spi_resume)
};
static const struct of_device_id mxs_spi_dt_ids[] = {
@@ -528,7 +530,7 @@ static int mxs_spi_probe(struct platform_device *pdev)
const struct of_device_id *of_id =
of_match_device(mxs_spi_dt_ids, &pdev->dev);
struct device_node *np = pdev->dev.of_node;
- struct spi_master *master;
+ struct spi_controller *host;
struct mxs_spi *spi;
struct mxs_ssp *ssp;
struct clk *clk;
@@ -561,21 +563,21 @@ static int mxs_spi_probe(struct platform_device *pdev)
if (ret)
clk_freq = clk_freq_default;
- master = spi_alloc_master(&pdev->dev, sizeof(*spi));
- if (!master)
+ host = spi_alloc_host(&pdev->dev, sizeof(*spi));
+ if (!host)
return -ENOMEM;
- platform_set_drvdata(pdev, master);
+ platform_set_drvdata(pdev, host);
- master->transfer_one_message = mxs_spi_transfer_one;
- master->bits_per_word_mask = SPI_BPW_MASK(8);
- master->mode_bits = SPI_CPOL | SPI_CPHA;
- master->num_chipselect = 3;
- master->dev.of_node = np;
- master->flags = SPI_MASTER_HALF_DUPLEX;
- master->auto_runtime_pm = true;
+ host->transfer_one_message = mxs_spi_transfer_one;
+ host->bits_per_word_mask = SPI_BPW_MASK(8);
+ host->mode_bits = SPI_CPOL | SPI_CPHA;
+ host->num_chipselect = 3;
+ host->dev.of_node = np;
+ host->flags = SPI_CONTROLLER_HALF_DUPLEX;
+ host->auto_runtime_pm = true;
- spi = spi_master_get_devdata(master);
+ spi = spi_controller_get_devdata(host);
ssp = &spi->ssp;
ssp->dev = &pdev->dev;
ssp->clk = clk;
@@ -587,13 +589,13 @@ static int mxs_spi_probe(struct platform_device *pdev)
ret = devm_request_irq(&pdev->dev, irq_err, mxs_ssp_irq_handler, 0,
dev_name(&pdev->dev), ssp);
if (ret)
- goto out_master_free;
+ goto out_host_free;
ssp->dmach = dma_request_chan(&pdev->dev, "rx-tx");
if (IS_ERR(ssp->dmach)) {
dev_err(ssp->dev, "Failed to request DMA\n");
ret = PTR_ERR(ssp->dmach);
- goto out_master_free;
+ goto out_host_free;
}
pm_runtime_enable(ssp->dev);
@@ -617,9 +619,9 @@ static int mxs_spi_probe(struct platform_device *pdev)
if (ret)
goto out_pm_runtime_put;
- ret = devm_spi_register_master(&pdev->dev, master);
+ ret = devm_spi_register_controller(&pdev->dev, host);
if (ret) {
- dev_err(&pdev->dev, "Cannot register SPI master, %d\n", ret);
+ dev_err(&pdev->dev, "Cannot register SPI host, %d\n", ret);
goto out_pm_runtime_put;
}
@@ -633,19 +635,19 @@ out_pm_runtime_disable:
pm_runtime_disable(ssp->dev);
out_dma_release:
dma_release_channel(ssp->dmach);
-out_master_free:
- spi_master_put(master);
+out_host_free:
+ spi_controller_put(host);
return ret;
}
static void mxs_spi_remove(struct platform_device *pdev)
{
- struct spi_master *master;
+ struct spi_controller *host;
struct mxs_spi *spi;
struct mxs_ssp *ssp;
- master = platform_get_drvdata(pdev);
- spi = spi_master_get_devdata(master);
+ host = platform_get_drvdata(pdev);
+ spi = spi_controller_get_devdata(host);
ssp = &spi->ssp;
pm_runtime_disable(&pdev->dev);
@@ -657,17 +659,17 @@ static void mxs_spi_remove(struct platform_device *pdev)
static struct platform_driver mxs_spi_driver = {
.probe = mxs_spi_probe,
- .remove_new = mxs_spi_remove,
+ .remove = mxs_spi_remove,
.driver = {
.name = DRIVER_NAME,
.of_match_table = mxs_spi_dt_ids,
- .pm = &mxs_spi_pm,
+ .pm = pm_ptr(&mxs_spi_pm),
},
};
module_platform_driver(mxs_spi_driver);
MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
-MODULE_DESCRIPTION("MXS SPI master driver");
+MODULE_DESCRIPTION("MXS SPI host driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:mxs-spi");
generated by cgit (git 2.34.1) at 2025-12-25 18:10:09 +0000