linux-kernel - [PATCH 4.9 097/105] x86/platform/intel-mid: Rename spidev to mrfld

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Date:   Fri,  4 Aug 2017 16:16:05 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 097/105] x86/platform/intel-mid: Rename spidev to mrfld_spidev

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>


[ Upstream commit 159d3726db12b3476bc59ea0ab0a702103d466b5 ]

The current implementation supports only Intel Merrifield platforms. Don't mess
with the rest of the Intel MID family by not registering device with wrong
properties.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/20170102092450.87229-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/x86/platform/intel-mid/device_libs/Makefile                |    2 
 arch/x86/platform/intel-mid/device_libs/platform_mrfld_spidev.c |   54 ++++++++++
 arch/x86/platform/intel-mid/device_libs/platform_spidev.c       |   50 ---------
 3 files changed, 55 insertions(+), 51 deletions(-)
 rename arch/x86/platform/intel-mid/device_libs/{platform_spidev.c => platform_mrfld_spidev.c} (91%)

--- a/arch/x86/platform/intel-mid/device_libs/Makefile
+++ b/arch/x86/platform/intel-mid/device_libs/Makefile
@@ -15,7 +15,7 @@ obj-$(subst m,y,$(CONFIG_INTEL_MID_POWER
 obj-$(subst m,y,$(CONFIG_GPIO_INTEL_PMIC)) += platform_pmic_gpio.o
 obj-$(subst m,y,$(CONFIG_INTEL_MFLD_THERMAL)) += platform_msic_thermal.o
 # SPI Devices
-obj-$(subst m,y,$(CONFIG_SPI_SPIDEV)) += platform_spidev.o
+obj-$(subst m,y,$(CONFIG_SPI_SPIDEV)) += platform_mrfld_spidev.o
 # I2C Devices
 obj-$(subst m,y,$(CONFIG_SENSORS_EMC1403)) += platform_emc1403.o
 obj-$(subst m,y,$(CONFIG_SENSORS_LIS3LV02D)) += platform_lis331.o
--- /dev/null
+++ b/arch/x86/platform/intel-mid/device_libs/platform_mrfld_spidev.c
@@ -0,0 +1,54 @@
+/*
+ * spidev platform data initilization file
+ *
+ * (C) Copyright 2014, 2016 Intel Corporation
+ * Authors: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
+ *	    Dan O'Donovan <dan@...tex.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/sfi.h>
+#include <linux/spi/pxa2xx_spi.h>
+#include <linux/spi/spi.h>
+
+#include <asm/intel-mid.h>
+
+#define MRFLD_SPI_DEFAULT_DMA_BURST	8
+#define MRFLD_SPI_DEFAULT_TIMEOUT	500
+
+/* GPIO pin for spidev chipselect */
+#define MRFLD_SPIDEV_GPIO_CS		111
+
+static struct pxa2xx_spi_chip spidev_spi_chip = {
+	.dma_burst_size		= MRFLD_SPI_DEFAULT_DMA_BURST,
+	.timeout		= MRFLD_SPI_DEFAULT_TIMEOUT,
+	.gpio_cs		= MRFLD_SPIDEV_GPIO_CS,
+};
+
+static void __init *spidev_platform_data(void *info)
+{
+	struct spi_board_info *spi_info = info;
+
+	if (intel_mid_identify_cpu() != INTEL_MID_CPU_CHIP_TANGIER)
+		return ERR_PTR(-ENODEV);
+
+	spi_info->mode = SPI_MODE_0;
+	spi_info->controller_data = &spidev_spi_chip;
+
+	return NULL;
+}
+
+static const struct devs_id spidev_dev_id __initconst = {
+	.name			= "spidev",
+	.type			= SFI_DEV_TYPE_SPI,
+	.delay			= 0,
+	.get_platform_data	= &spidev_platform_data,
+};
+
+sfi_device(spidev_dev_id);
--- a/arch/x86/platform/intel-mid/device_libs/platform_spidev.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * spidev platform data initilization file
- *
- * (C) Copyright 2014, 2016 Intel Corporation
- * Authors: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
- *	    Dan O'Donovan <dan@...tex.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; version 2
- * of the License.
- */
-
-#include <linux/init.h>
-#include <linux/sfi.h>
-#include <linux/spi/pxa2xx_spi.h>
-#include <linux/spi/spi.h>
-
-#include <asm/intel-mid.h>
-
-#define MRFLD_SPI_DEFAULT_DMA_BURST	8
-#define MRFLD_SPI_DEFAULT_TIMEOUT	500
-
-/* GPIO pin for spidev chipselect */
-#define MRFLD_SPIDEV_GPIO_CS		111
-
-static struct pxa2xx_spi_chip spidev_spi_chip = {
-	.dma_burst_size		= MRFLD_SPI_DEFAULT_DMA_BURST,
-	.timeout		= MRFLD_SPI_DEFAULT_TIMEOUT,
-	.gpio_cs		= MRFLD_SPIDEV_GPIO_CS,
-};
-
-static void __init *spidev_platform_data(void *info)
-{
-	struct spi_board_info *spi_info = info;
-
-	spi_info->mode = SPI_MODE_0;
-	spi_info->controller_data = &spidev_spi_chip;
-
-	return NULL;
-}
-
-static const struct devs_id spidev_dev_id __initconst = {
-	.name			= "spidev",
-	.type			= SFI_DEV_TYPE_SPI,
-	.delay			= 0,
-	.get_platform_data	= &spidev_platform_data,
-};
-
-sfi_device(spidev_dev_id);