kernel: remove long obsolete gpio spi controller driver patch

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 0 insertions, 373 deletions

diff --git a/target/linux/generic/patches-4.4/862-gpio_spi_driver.patch b/target/linux/generic/patches-4.4/862-gpio_spi_driver.patch
deleted file mode 100644
index 8f334ec..0000000
--- a/target/linux/generic/patches-4.4/862-gpio_spi_driver.patch
+++ /dev/null
@@ -1,373 +0,0 @@
-THIS CODE IS DEPRECATED.
-
-Please use the new mainline SPI-GPIO driver, as of 2.6.29.
-
---mb
-
-
-
----
- drivers/spi/Kconfig              |    9 +
- drivers/spi/Makefile             |    1 
- drivers/spi/spi_gpio_old.c       |  251 +++++++++++++++++++++++++++++++++++++++
- include/linux/spi/spi_gpio_old.h |   73 +++++++++++
- 4 files changed, 334 insertions(+)
-
---- /dev/null
-+++ b/include/linux/spi/spi_gpio_old.h
-@@ -0,0 +1,73 @@
-+/*
-+ * spi_gpio interface to platform code
-+ *
-+ * Copyright (c) 2008 Piotr Skamruk
-+ * Copyright (c) 2008 Michael Buesch
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+#ifndef _LINUX_SPI_SPI_GPIO
-+#define _LINUX_SPI_SPI_GPIO
-+
-+#include <linux/types.h>
-+#include <linux/spi/spi.h>
-+
-+
-+/**
-+ * struct spi_gpio_platform_data - Data definitions for a SPI-GPIO device.
-+ *
-+ * This structure holds information about a GPIO-based SPI device.
-+ *
-+ * @pin_clk: The GPIO pin number of the CLOCK pin.
-+ *
-+ * @pin_miso: The GPIO pin number of the MISO pin.
-+ *
-+ * @pin_mosi: The GPIO pin number of the MOSI pin.
-+ *
-+ * @pin_cs: The GPIO pin number of the CHIPSELECT pin.
-+ *
-+ * @cs_activelow: If true, the chip is selected when the CS line is low.
-+ *
-+ * @no_spi_delay: If true, no delay is done in the lowlevel bitbanging.
-+ *                Note that doing no delay is not standards compliant,
-+ *                but it might be needed to speed up transfers on some
-+ *                slow embedded machines.
-+ *
-+ * @boardinfo_setup: This callback is called after the
-+ *                   SPI master device was registered, but before the
-+ *                   device is registered.
-+ * @boardinfo_setup_data: Data argument passed to boardinfo_setup().
-+ */
-+struct spi_gpio_platform_data {
-+	unsigned int pin_clk;
-+	unsigned int pin_miso;
-+	unsigned int pin_mosi;
-+	unsigned int pin_cs;
-+	bool cs_activelow;
-+	bool no_spi_delay;
-+	int (*boardinfo_setup)(struct spi_board_info *bi,
-+			       struct spi_master *master,
-+			       void *data);
-+	void *boardinfo_setup_data;
-+};
-+
-+/**
-+ * SPI_GPIO_PLATDEV_NAME - The platform device name string.
-+ *
-+ * The name string that has to be used for platform_device_alloc
-+ * when allocating a spi-gpio device.
-+ */
-+#define SPI_GPIO_PLATDEV_NAME	"spi-gpio"
-+
-+/**
-+ * spi_gpio_next_id - Get another platform device ID number.
-+ *
-+ * This returns the next platform device ID number that has to be used
-+ * for platform_device_alloc. The ID is opaque and should not be used for
-+ * anything else.
-+ */
-+int spi_gpio_next_id(void);
-+
-+#endif /* _LINUX_SPI_SPI_GPIO */
---- /dev/null
-+++ b/drivers/spi/spi_gpio_old.c
-@@ -0,0 +1,251 @@
-+/*
-+ * Bitbanging SPI bus driver using GPIO API
-+ *
-+ * Copyright (c) 2008 Piotr Skamruk
-+ * Copyright (c) 2008 Michael Buesch
-+ *
-+ * based on spi_s3c2410_gpio.c
-+ *   Copyright (c) 2006 Ben Dooks
-+ *   Copyright (c) 2006 Simtec Electronics
-+ * and on i2c-gpio.c
-+ *   Copyright (C) 2007 Atmel Corporation
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/init.h>
-+#include <linux/delay.h>
-+#include <linux/spinlock.h>
-+#include <linux/workqueue.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/spi/spi.h>
-+#include <linux/spi/spi_bitbang.h>
-+#include <linux/spi/spi_gpio_old.h>
-+#include <linux/gpio.h>
-+#include <asm/atomic.h>
-+
-+
-+struct spi_gpio {
-+	struct spi_bitbang bitbang;
-+	struct spi_gpio_platform_data *info;
-+	struct platform_device *pdev;
-+	struct spi_board_info bi;
-+};
-+
-+
-+static inline struct spi_gpio *spidev_to_sg(struct spi_device *dev)
-+{
-+	return dev->controller_data;
-+}
-+
-+static inline void setsck(struct spi_device *dev, int val)
-+{
-+	struct spi_gpio *sp = spidev_to_sg(dev);
-+	gpio_set_value(sp->info->pin_clk, val ? 1 : 0);
-+}
-+
-+static inline void setmosi(struct spi_device *dev, int val)
-+{
-+	struct spi_gpio *sp = spidev_to_sg(dev);
-+	gpio_set_value(sp->info->pin_mosi, val ? 1 : 0);
-+}
-+
-+static inline u32 getmiso(struct spi_device *dev)
-+{
-+	struct spi_gpio *sp = spidev_to_sg(dev);
-+	return gpio_get_value(sp->info->pin_miso) ? 1 : 0;
-+}
-+
-+static inline void do_spidelay(struct spi_device *dev, unsigned nsecs)
-+{
-+	struct spi_gpio *sp = spidev_to_sg(dev);
-+
-+	if (!sp->info->no_spi_delay)
-+		ndelay(nsecs);
-+}
-+
-+#define spidelay(nsecs) do {					\
-+	/* Steal the spi_device pointer from our caller.	\
-+	 * The bitbang-API should probably get fixed here... */	\
-+	do_spidelay(spi, nsecs);				\
-+  } while (0)
-+
-+#define EXPAND_BITBANG_TXRX
-+#include "spi-bitbang-txrx.h"
-+
-+static u32 spi_gpio_txrx_mode0(struct spi_device *spi,
-+			       unsigned nsecs, u32 word, u8 bits)
-+{
-+	return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
-+}
-+
-+static u32 spi_gpio_txrx_mode1(struct spi_device *spi,
-+			       unsigned nsecs, u32 word, u8 bits)
-+{
-+	return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits);
-+}
-+
-+static u32 spi_gpio_txrx_mode2(struct spi_device *spi,
-+			       unsigned nsecs, u32 word, u8 bits)
-+{
-+	return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits);
-+}
-+
-+static u32 spi_gpio_txrx_mode3(struct spi_device *spi,
-+			       unsigned nsecs, u32 word, u8 bits)
-+{
-+	return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits);
-+}
-+
-+static void spi_gpio_chipselect(struct spi_device *dev, int on)
-+{
-+	struct spi_gpio *sp = spidev_to_sg(dev);
-+
-+	if (sp->info->cs_activelow)
-+		on = !on;
-+	gpio_set_value(sp->info->pin_cs, on ? 1 : 0);
-+}
-+
-+static int spi_gpio_probe(struct platform_device *pdev)
-+{
-+	struct spi_master *master;
-+	struct spi_gpio_platform_data *pdata;
-+	struct spi_gpio *sp;
-+	struct spi_device *spidev;
-+	int err;
-+
-+	pdata = pdev->dev.platform_data;
-+	if (!pdata)
-+		return -ENXIO;
-+
-+	err = -ENOMEM;
-+	master = spi_alloc_master(&pdev->dev, sizeof(struct spi_gpio));
-+	if (!master)
-+		goto err_alloc_master;
-+
-+	sp = spi_master_get_devdata(master);
-+	platform_set_drvdata(pdev, sp);
-+	sp->info = pdata;
-+
-+	err = gpio_request(pdata->pin_clk, "spi_clock");
-+	if (err)
-+		goto err_request_clk;
-+	err = gpio_request(pdata->pin_mosi, "spi_mosi");
-+	if (err)
-+		goto err_request_mosi;
-+	err = gpio_request(pdata->pin_miso, "spi_miso");
-+	if (err)
-+		goto err_request_miso;
-+	err = gpio_request(pdata->pin_cs, "spi_cs");
-+	if (err)
-+		goto err_request_cs;
-+
-+	sp->bitbang.master = spi_master_get(master);
-+	sp->bitbang.master->bus_num = -1;
-+	sp->bitbang.master->num_chipselect = 1;
-+	sp->bitbang.chipselect = spi_gpio_chipselect;
-+	sp->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_txrx_mode0;
-+	sp->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_txrx_mode1;
-+	sp->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_mode2;
-+	sp->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_txrx_mode3;
-+
-+	gpio_direction_output(pdata->pin_clk, 0);
-+	gpio_direction_output(pdata->pin_mosi, 0);
-+	gpio_direction_output(pdata->pin_cs,
-+			      pdata->cs_activelow ? 1 : 0);
-+	gpio_direction_input(pdata->pin_miso);
-+
-+	err = spi_bitbang_start(&sp->bitbang);
-+	if (err)
-+		goto err_no_bitbang;
-+	err = pdata->boardinfo_setup(&sp->bi, master,
-+				     pdata->boardinfo_setup_data);
-+	if (err)
-+		goto err_bi_setup;
-+	sp->bi.controller_data = sp;
-+	spidev = spi_new_device(master, &sp->bi);
-+	if (!spidev)
-+		goto err_new_dev;
-+
-+	return 0;
-+
-+err_new_dev:
-+err_bi_setup:
-+	spi_bitbang_stop(&sp->bitbang);
-+err_no_bitbang:
-+	spi_master_put(sp->bitbang.master);
-+	gpio_free(pdata->pin_cs);
-+err_request_cs:
-+	gpio_free(pdata->pin_miso);
-+err_request_miso:
-+	gpio_free(pdata->pin_mosi);
-+err_request_mosi:
-+	gpio_free(pdata->pin_clk);
-+err_request_clk:
-+	kfree(master);
-+
-+err_alloc_master:
-+	return err;
-+}
-+
-+static int spi_gpio_remove(struct platform_device *pdev)
-+{
-+	struct spi_gpio *sp;
-+	struct spi_gpio_platform_data *pdata;
-+
-+	pdata = pdev->dev.platform_data;
-+	sp = platform_get_drvdata(pdev);
-+
-+	gpio_free(pdata->pin_clk);
-+	gpio_free(pdata->pin_mosi);
-+	gpio_free(pdata->pin_miso);
-+	gpio_free(pdata->pin_cs);
-+	spi_bitbang_stop(&sp->bitbang);
-+	spi_master_put(sp->bitbang.master);
-+
-+	return 0;
-+}
-+
-+static struct platform_driver spi_gpio_driver = {
-+	.driver		= {
-+		.name	= SPI_GPIO_PLATDEV_NAME,
-+		.owner	= THIS_MODULE,
-+	},
-+	.probe		= spi_gpio_probe,
-+	.remove		= spi_gpio_remove,
-+};
-+
-+int spi_gpio_next_id(void)
-+{
-+	static atomic_t counter = ATOMIC_INIT(-1);
-+
-+	return atomic_inc_return(&counter);
-+}
-+EXPORT_SYMBOL(spi_gpio_next_id);
-+
-+static int __init spi_gpio_init(void)
-+{
-+	int err;
-+
-+	err = platform_driver_register(&spi_gpio_driver);
-+	if (err)
-+		printk(KERN_ERR "spi-gpio: register failed: %d\n", err);
-+
-+	return err;
-+}
-+module_init(spi_gpio_init);
-+
-+static void __exit spi_gpio_exit(void)
-+{
-+	platform_driver_unregister(&spi_gpio_driver);
-+}
-+module_exit(spi_gpio_exit);
-+
-+MODULE_AUTHOR("Piot Skamruk <piotr.skamruk at gmail.com>");
-+MODULE_AUTHOR("Michael Buesch");
-+MODULE_DESCRIPTION("Platform independent GPIO bitbanging SPI driver");
-+MODULE_LICENSE("GPL v2");
---- a/drivers/spi/Kconfig
-+++ b/drivers/spi/Kconfig
-@@ -254,6 +254,15 @@ config SPI_IMG_SPFI
- 	  This enables support for the SPFI master controller found on
- 	  IMG SoCs.
- 
-+config SPI_GPIO_OLD
-+	tristate "Old GPIO API based bitbanging SPI controller (DEPRECATED)"
-+	depends on SPI_MASTER && GPIOLIB
-+	select SPI_BITBANG
-+	help
-+	  This code is deprecated. Please use the new mainline SPI-GPIO driver.
-+
-+	  If unsure, say N.
-+
- config SPI_IMX
- 	tristate "Freescale i.MX SPI controllers"
- 	depends on ARCH_MXC || COMPILE_TEST
---- a/drivers/spi/Makefile
-+++ b/drivers/spi/Makefile
-@@ -42,6 +42,7 @@ obj-$(CONFIG_SPI_FSL_LIB)		+= spi-fsl-li
- obj-$(CONFIG_SPI_FSL_ESPI)		+= spi-fsl-espi.o
- obj-$(CONFIG_SPI_FSL_SPI)		+= spi-fsl-spi.o
- obj-$(CONFIG_SPI_GPIO)			+= spi-gpio.o
-+obj-$(CONFIG_SPI_GPIO_OLD)		+= spi_gpio_old.o
- obj-$(CONFIG_SPI_IMG_SPFI)		+= spi-img-spfi.o
- obj-$(CONFIG_SPI_IMX)			+= spi-imx.o
- obj-$(CONFIG_SPI_LM70_LLP)		+= spi-lm70llp.o