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can: mcp251x: get rid of legacy platform data 

Instead of using legacy platform data, switch to use device properties.
For clock frequency we are using well established clock-frequency property.

Users, two for now, are also converted here.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Andy Shevchenko 2019-10-08 19:20:39 +03:00 committed by Marc Kleine-Budde
parent 371fd7baa8
commit 50ec88120e
4 changed files with 14 additions and 35 deletions
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9
arch/arm/mach-pxa/icontrol.c
View File

@ -12,6 +12,7 @@
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
@ -22,7 +23,6 @@
#include <linux/spi/spi.h>
#include <linux/spi/pxa2xx_spi.h>
#include <linux/can/platform/mcp251x.h>
#include <linux/regulator/machine.h>
#include "generic.h"
@ -69,8 +69,9 @@ static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
.gpio_cs = ICONTROL_MCP251x_nCS4
};
static struct mcp251x_platform_data mcp251x_info = {
.oscillator_frequency = 16E6,
static const struct property_entry mcp251x_properties[] = {
PROPERTY_ENTRY_U32("clock-frequency", 16000000),
{}
};
static struct spi_board_info mcp251x_board_info[] = {
@ -79,7 +80,7 @@ static struct spi_board_info mcp251x_board_info[] = {
.max_speed_hz = 6500000,
.bus_num = 3,
.chip_select = 0,
.platform_data = &mcp251x_info,
.properties = mcp251x_properties,
.controller_data = &mcp251x_chip_info1,
.irq = PXA_GPIO_TO_IRQ(ICONTROL_MCP251x_nIRQ1)
},

9
arch/arm/mach-pxa/zeus.c
View File

@ -13,6 +13,7 @@
#include <linux/leds.h>
#include <linux/irq.h>
#include <linux/pm.h>
#include <linux/property.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/serial_8250.h>
@ -27,7 +28,6 @@
#include <linux/platform_data/i2c-pxa.h>
#include <linux/platform_data/pca953x.h>
#include <linux/apm-emulation.h>
#include <linux/can/platform/mcp251x.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
@ -428,14 +428,15 @@ static struct gpiod_lookup_table can_regulator_gpiod_table = {
},
};
static struct mcp251x_platform_data zeus_mcp2515_pdata = {
.oscillator_frequency = 16*1000*1000,
static const struct property_entry mcp251x_properties[] = {
PROPERTY_ENTRY_U32("clock-frequency", 16000000),
{}
};
static struct spi_board_info zeus_spi_board_info[] = {
[0] = {
.modalias = "mcp2515",
.platform_data = &zeus_mcp2515_pdata,
.properties = mcp251x_properties,
.irq = PXA_GPIO_TO_IRQ(ZEUS_CAN_GPIO),
.max_speed_hz = 1*1000*1000,
.bus_num = 3,

9
drivers/net/can/spi/mcp251x.c
View File

@ -22,7 +22,6 @@
#include <linux/can/core.h>
#include <linux/can/dev.h>
#include <linux/can/led.h>
#include <linux/can/platform/mcp251x.h>
#include <linux/clk.h>
#include <linux/completion.h>
#include <linux/delay.h>
@ -986,19 +985,19 @@ MODULE_DEVICE_TABLE(spi, mcp251x_id_table);
static int mcp251x_can_probe(struct spi_device *spi)
{
const void *match = device_get_match_data(&spi->dev);
struct mcp251x_platform_data *pdata = dev_get_platdata(&spi->dev);
struct net_device *net;
struct mcp251x_priv *priv;
struct clk *clk;
int freq, ret;
u32 freq;
int ret;
clk = devm_clk_get_optional(&spi->dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);
freq = clk_get_rate(clk);
if (freq == 0 && pdata)
freq = pdata->oscillator_frequency;
if (freq == 0)
device_property_read_u32(&spi->dev, "clock-frequency", &freq);
/* Sanity check */
if (freq < 1000000 || freq > 25000000)

22
include/linux/can/platform/mcp251x.h
View File

@ -1,22 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _CAN_PLATFORM_MCP251X_H
#define _CAN_PLATFORM_MCP251X_H
/*
*
* CAN bus driver for Microchip 251x CAN Controller with SPI Interface
*
*/
#include <linux/spi/spi.h>
/*
* struct mcp251x_platform_data - MCP251X SPI CAN controller platform data
* @oscillator_frequency: - oscillator frequency in Hz
*/
struct mcp251x_platform_data {
unsigned long oscillator_frequency;
};
#endif /* !_CAN_PLATFORM_MCP251X_H */