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Message-Id: <20230217-dt-mpc5xxx-spi-v1-1-3be8602fce1e@kernel.org>
Date: Fri, 17 Feb 2023 14:45:40 -0600
From: Rob Herring <robh@...nel.org>
To: Mark Brown <broonie@...nel.org>
Cc: linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] spi: mpc5xxx-psc: Remove unused platform_data
The platform_data for the MPC5xxx PSC SPI controllers is never used, so
remove it and the resulting code which depends on it.
Signed-off-by: Rob Herring <robh@...nel.org>
---
drivers/spi/spi-mpc512x-psc.c | 28 ++++------------------------
drivers/spi/spi-mpc52xx-psc.c | 39 +++------------------------------------
2 files changed, 7 insertions(+), 60 deletions(-)
diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c
index 03630359ce70..0b4d49ef84de 100644
--- a/drivers/spi/spi-mpc512x-psc.c
+++ b/drivers/spi/spi-mpc512x-psc.c
@@ -22,7 +22,6 @@
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/spi/spi.h>
-#include <linux/fsl_devices.h>
#include <asm/mpc52xx_psc.h>
enum {
@@ -51,8 +50,6 @@ enum {
__ret; })
struct mpc512x_psc_spi {
- void (*cs_control)(struct spi_device *spi, bool on);
-
/* driver internal data */
int type;
void __iomem *psc;
@@ -128,26 +125,16 @@ static void mpc512x_psc_spi_activate_cs(struct spi_device *spi)
mps->bits_per_word = cs->bits_per_word;
if (spi->cs_gpiod) {
- if (mps->cs_control)
- /* boardfile override */
- mps->cs_control(spi, (spi->mode & SPI_CS_HIGH) ? 1 : 0);
- else
- /* gpiolib will deal with the inversion */
- gpiod_set_value(spi->cs_gpiod, 1);
+ /* gpiolib will deal with the inversion */
+ gpiod_set_value(spi->cs_gpiod, 1);
}
}
static void mpc512x_psc_spi_deactivate_cs(struct spi_device *spi)
{
- struct mpc512x_psc_spi *mps = spi_master_get_devdata(spi->master);
-
if (spi->cs_gpiod) {
- if (mps->cs_control)
- /* boardfile override */
- mps->cs_control(spi, (spi->mode & SPI_CS_HIGH) ? 0 : 1);
- else
- /* gpiolib will deal with the inversion */
- gpiod_set_value(spi->cs_gpiod, 0);
+ /* gpiolib will deal with the inversion */
+ gpiod_set_value(spi->cs_gpiod, 0);
}
}
@@ -474,7 +461,6 @@ static irqreturn_t mpc512x_psc_spi_isr(int irq, void *dev_id)
static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
u32 size, unsigned int irq)
{
- struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
struct mpc512x_psc_spi *mps;
struct spi_master *master;
int ret;
@@ -490,12 +476,6 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
mps->type = (int)of_device_get_match_data(dev);
mps->irq = irq;
- if (pdata) {
- mps->cs_control = pdata->cs_control;
- master->bus_num = pdata->bus_num;
- master->num_chipselect = pdata->max_chipselect;
- }
-
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST;
master->setup = mpc512x_psc_spi_setup;
master->prepare_transfer_hardware = mpc512x_psc_spi_prep_xfer_hw;
diff --git a/drivers/spi/spi-mpc52xx-psc.c b/drivers/spi/spi-mpc52xx-psc.c
index 609311231e64..604868df913c 100644
--- a/drivers/spi/spi-mpc52xx-psc.c
+++ b/drivers/spi/spi-mpc52xx-psc.c
@@ -18,7 +18,6 @@
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
-#include <linux/fsl_devices.h>
#include <linux/slab.h>
#include <linux/of_irq.h>
@@ -28,10 +27,6 @@
#define MCLK 20000000 /* PSC port MClk in hz */
struct mpc52xx_psc_spi {
- /* fsl_spi_platform data */
- void (*cs_control)(struct spi_device *spi, bool on);
- u32 sysclk;
-
/* driver internal data */
struct mpc52xx_psc __iomem *psc;
struct mpc52xx_psc_fifo __iomem *fifo;
@@ -101,17 +96,6 @@ static void mpc52xx_psc_spi_activate_cs(struct spi_device *spi)
ccr |= (MCLK / 1000000 - 1) & 0xFF;
out_be16((u16 __iomem *)&psc->ccr, ccr);
mps->bits_per_word = cs->bits_per_word;
-
- if (mps->cs_control)
- mps->cs_control(spi, (spi->mode & SPI_CS_HIGH) ? 1 : 0);
-}
-
-static void mpc52xx_psc_spi_deactivate_cs(struct spi_device *spi)
-{
- struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
-
- if (mps->cs_control)
- mps->cs_control(spi, (spi->mode & SPI_CS_HIGH) ? 0 : 1);
}
#define MPC52xx_PSC_BUFSIZE (MPC52xx_PSC_RFNUM_MASK + 1)
@@ -220,14 +204,9 @@ int mpc52xx_psc_spi_transfer_one_message(struct spi_controller *ctlr,
m->actual_length += t->len;
spi_transfer_delay_exec(t);
-
- if (cs_change)
- mpc52xx_psc_spi_deactivate_cs(spi);
}
m->status = status;
- if (status || !cs_change)
- mpc52xx_psc_spi_deactivate_cs(spi);
mpc52xx_psc_spi_transfer_setup(spi, NULL);
@@ -269,7 +248,7 @@ static int mpc52xx_psc_spi_port_config(int psc_id, struct mpc52xx_psc_spi *mps)
int ret;
/* default sysclk is 512MHz */
- mclken_div = (mps->sysclk ? mps->sysclk : 512000000) / MCLK;
+ mclken_div = 512000000 / MCLK;
ret = mpc52xx_set_psc_clkdiv(psc_id, mclken_div);
if (ret)
return ret;
@@ -317,7 +296,6 @@ static irqreturn_t mpc52xx_psc_spi_isr(int irq, void *dev_id)
static int mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
u32 size, unsigned int irq, s16 bus_num)
{
- struct fsl_spi_platform_data *pdata = dev_get_platdata(dev);
struct mpc52xx_psc_spi *mps;
struct spi_master *master;
int ret;
@@ -333,19 +311,8 @@ static int mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST;
mps->irq = irq;
- if (pdata == NULL) {
- dev_warn(dev,
- "probe called without platform data, no cs_control function will be called\n");
- mps->cs_control = NULL;
- mps->sysclk = 0;
- master->bus_num = bus_num;
- master->num_chipselect = 255;
- } else {
- mps->cs_control = pdata->cs_control;
- mps->sysclk = pdata->sysclk;
- master->bus_num = pdata->bus_num;
- master->num_chipselect = pdata->max_chipselect;
- }
+ master->bus_num = bus_num;
+ master->num_chipselect = 255;
master->setup = mpc52xx_psc_spi_setup;
master->transfer_one_message = mpc52xx_psc_spi_transfer_one_message;
master->cleanup = mpc52xx_psc_spi_cleanup;
--
2.39.1
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