ramips: drop linux 4.9 support

4.14 has been tested a lot by a number of users, and we want to use it
for the release.

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

1 files changed, 0 insertions, 574 deletions

diff --git a/target/linux/ramips/patches-4.9/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch b/target/linux/ramips/patches-4.9/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch
deleted file mode 100644
index 3150dd8382..0000000000
--- a/target/linux/ramips/patches-4.9/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch
+++ /dev/null
@@ -1,574 +0,0 @@
-From 683af4ebb91a1600df1946ac4769d916b8a1be65 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Sun, 27 Jul 2014 11:15:12 +0100
-Subject: [PATCH 42/53] SPI: ralink: add Ralink SoC spi driver
-
-Add the driver needed to make SPI work on Ralink SoC.
-
-Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
-Acked-by: John Crispin <blogic@openwrt.org>
----
- drivers/spi/Kconfig      |    6 +
- drivers/spi/Makefile     |    1 +
- drivers/spi/spi-rt2880.c |  530 ++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 537 insertions(+)
- create mode 100644 drivers/spi/spi-rt2880.c
-
---- a/drivers/spi/Kconfig
-+++ b/drivers/spi/Kconfig
-@@ -534,6 +534,12 @@ config SPI_QUP
- 	  This driver can also be built as a module.  If so, the module
- 	  will be called spi_qup.
- 
-+config SPI_RT2880
-+	tristate "Ralink RT288x SPI Controller"
-+	depends on RALINK
-+	help
-+	  This selects a driver for the Ralink RT288x/RT305x SPI Controller.
-+
- config SPI_S3C24XX
- 	tristate "Samsung S3C24XX series SPI"
- 	depends on ARCH_S3C24XX
---- a/drivers/spi/Makefile
-+++ b/drivers/spi/Makefile
-@@ -76,6 +76,7 @@ obj-$(CONFIG_SPI_QUP)			+= spi-qup.o
- obj-$(CONFIG_SPI_ROCKCHIP)		+= spi-rockchip.o
- obj-$(CONFIG_SPI_RB4XX)			+= spi-rb4xx.o
- obj-$(CONFIG_SPI_RSPI)			+= spi-rspi.o
-+obj-$(CONFIG_SPI_RT2880)		+= spi-rt2880.o
- obj-$(CONFIG_SPI_S3C24XX)		+= spi-s3c24xx-hw.o
- spi-s3c24xx-hw-y			:= spi-s3c24xx.o
- spi-s3c24xx-hw-$(CONFIG_SPI_S3C24XX_FIQ) += spi-s3c24xx-fiq.o
---- /dev/null
-+++ b/drivers/spi/spi-rt2880.c
-@@ -0,0 +1,530 @@
-+/*
-+ * spi-rt2880.c -- Ralink RT288x/RT305x SPI controller driver
-+ *
-+ * Copyright (C) 2011 Sergiy <piratfm@gmail.com>
-+ * Copyright (C) 2011-2013 Gabor Juhos <juhosg@openwrt.org>
-+ *
-+ * Some parts are based on spi-orion.c:
-+ *   Author: Shadi Ammouri <shadi@marvell.com>
-+ *   Copyright (C) 2007-2008 Marvell Ltd.
-+ *
-+ * 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/init.h>
-+#include <linux/module.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/delay.h>
-+#include <linux/io.h>
-+#include <linux/reset.h>
-+#include <linux/spi/spi.h>
-+#include <linux/platform_device.h>
-+#include <linux/gpio.h>
-+
-+#define DRIVER_NAME			"spi-rt2880"
-+
-+#define RAMIPS_SPI_STAT			0x00
-+#define RAMIPS_SPI_CFG			0x10
-+#define RAMIPS_SPI_CTL			0x14
-+#define RAMIPS_SPI_DATA			0x20
-+#define RAMIPS_SPI_ADDR			0x24
-+#define RAMIPS_SPI_BS			0x28
-+#define RAMIPS_SPI_USER			0x2C
-+#define RAMIPS_SPI_TXFIFO		0x30
-+#define RAMIPS_SPI_RXFIFO		0x34
-+#define RAMIPS_SPI_FIFO_STAT		0x38
-+#define RAMIPS_SPI_MODE			0x3C
-+#define RAMIPS_SPI_DEV_OFFSET		0x40
-+#define RAMIPS_SPI_DMA			0x80
-+#define RAMIPS_SPI_DMASTAT		0x84
-+#define RAMIPS_SPI_ARBITER		0xF0
-+
-+/* SPISTAT register bit field */
-+#define SPISTAT_BUSY			BIT(0)
-+
-+/* SPICFG register bit field */
-+#define SPICFG_ADDRMODE			BIT(12)
-+#define SPICFG_RXENVDIS			BIT(11)
-+#define SPICFG_RXCAP			BIT(10)
-+#define SPICFG_SPIENMODE		BIT(9)
-+#define SPICFG_MSBFIRST			BIT(8)
-+#define SPICFG_SPICLKPOL		BIT(6)
-+#define SPICFG_RXCLKEDGE_FALLING	BIT(5)
-+#define SPICFG_TXCLKEDGE_FALLING	BIT(4)
-+#define SPICFG_HIZSPI			BIT(3)
-+#define SPICFG_SPICLK_PRESCALE_MASK	0x7
-+#define SPICFG_SPICLK_DIV2		0
-+#define SPICFG_SPICLK_DIV4		1
-+#define SPICFG_SPICLK_DIV8		2
-+#define SPICFG_SPICLK_DIV16		3
-+#define SPICFG_SPICLK_DIV32		4
-+#define SPICFG_SPICLK_DIV64		5
-+#define SPICFG_SPICLK_DIV128		6
-+#define SPICFG_SPICLK_DISABLE		7
-+
-+/* SPICTL register bit field */
-+#define SPICTL_START			BIT(4)
-+#define SPICTL_HIZSDO			BIT(3)
-+#define SPICTL_STARTWR			BIT(2)
-+#define SPICTL_STARTRD			BIT(1)
-+#define SPICTL_SPIENA			BIT(0)
-+
-+/* SPIUSER register bit field */
-+#define SPIUSER_USERMODE		BIT(21)
-+#define SPIUSER_INSTR_PHASE		BIT(20)
-+#define SPIUSER_ADDR_PHASE_MASK		0x7
-+#define SPIUSER_ADDR_PHASE_OFFSET	17
-+#define SPIUSER_MODE_PHASE		BIT(16)
-+#define SPIUSER_DUMMY_PHASE_MASK	0x3
-+#define SPIUSER_DUMMY_PHASE_OFFSET	14
-+#define SPIUSER_DATA_PHASE_MASK		0x3
-+#define SPIUSER_DATA_PHASE_OFFSET	12
-+#define SPIUSER_DATA_READ		(BIT(0) << SPIUSER_DATA_PHASE_OFFSET)
-+#define SPIUSER_DATA_WRITE		(BIT(1) << SPIUSER_DATA_PHASE_OFFSET)
-+#define SPIUSER_ADDR_TYPE_OFFSET	9
-+#define SPIUSER_MODE_TYPE_OFFSET	6
-+#define SPIUSER_DUMMY_TYPE_OFFSET	3
-+#define SPIUSER_DATA_TYPE_OFFSET	0
-+#define SPIUSER_TRANSFER_MASK		0x7
-+#define SPIUSER_TRANSFER_SINGLE		BIT(0)
-+#define SPIUSER_TRANSFER_DUAL		BIT(1)
-+#define SPIUSER_TRANSFER_QUAD		BIT(2)
-+
-+#define SPIUSER_TRANSFER_TYPE(type) ( \
-+	(type << SPIUSER_ADDR_TYPE_OFFSET) | \
-+	(type << SPIUSER_MODE_TYPE_OFFSET) | \
-+	(type << SPIUSER_DUMMY_TYPE_OFFSET) | \
-+	(type << SPIUSER_DATA_TYPE_OFFSET) \
-+)
-+
-+/* SPIFIFOSTAT register bit field */
-+#define SPIFIFOSTAT_TXEMPTY		BIT(19)
-+#define SPIFIFOSTAT_RXEMPTY		BIT(18)
-+#define SPIFIFOSTAT_TXFULL		BIT(17)
-+#define SPIFIFOSTAT_RXFULL		BIT(16)
-+#define SPIFIFOSTAT_FIFO_MASK		0xff
-+#define SPIFIFOSTAT_TX_OFFSET		8
-+#define SPIFIFOSTAT_RX_OFFSET		0
-+
-+#define SPI_FIFO_DEPTH			16
-+
-+/* SPIMODE register bit field */
-+#define SPIMODE_MODE_OFFSET		24
-+#define SPIMODE_DUMMY_OFFSET		0
-+
-+/* SPIARB register bit field */
-+#define SPICTL_ARB_EN			BIT(31)
-+#define SPICTL_CSCTL1			BIT(16)
-+#define SPI1_POR			BIT(1)
-+#define SPI0_POR			BIT(0)
-+
-+#define RT2880_SPI_MODE_BITS	(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | \
-+		SPI_CS_HIGH)
-+
-+static atomic_t hw_reset_count = ATOMIC_INIT(0);
-+
-+struct rt2880_spi {
-+	struct spi_master	*master;
-+	void __iomem		*base;
-+	u32			speed;
-+	u16			wait_loops;
-+	u16			mode;
-+	struct clk		*clk;
-+};
-+
-+static inline struct rt2880_spi *spidev_to_rt2880_spi(struct spi_device *spi)
-+{
-+	return spi_master_get_devdata(spi->master);
-+}
-+
-+static inline u32 rt2880_spi_read(struct rt2880_spi *rs, u32 reg)
-+{
-+	return ioread32(rs->base + reg);
-+}
-+
-+static inline void rt2880_spi_write(struct rt2880_spi *rs, u32 reg,
-+		const u32 val)
-+{
-+	iowrite32(val, rs->base + reg);
-+}
-+
-+static inline void rt2880_spi_setbits(struct rt2880_spi *rs, u32 reg, u32 mask)
-+{
-+	void __iomem *addr = rs->base + reg;
-+
-+	iowrite32((ioread32(addr) | mask), addr);
-+}
-+
-+static inline void rt2880_spi_clrbits(struct rt2880_spi *rs, u32 reg, u32 mask)
-+{
-+	void __iomem *addr = rs->base + reg;
-+
-+	iowrite32((ioread32(addr) & ~mask), addr);
-+}
-+
-+static u32 rt2880_spi_baudrate_get(struct spi_device *spi, unsigned int speed)
-+{
-+	struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
-+	u32 rate;
-+	u32 prescale;
-+
-+	/*
-+	 * the supported rates are: 2, 4, 8, ... 128
-+	 * round up as we look for equal or less speed
-+	 */
-+	rate = DIV_ROUND_UP(clk_get_rate(rs->clk), speed);
-+	rate = roundup_pow_of_two(rate);
-+
-+	/* Convert the rate to SPI clock divisor value.	*/
-+	prescale = ilog2(rate / 2);
-+
-+	/* some tolerance. double and add 100 */
-+	rs->wait_loops = (8 * HZ * loops_per_jiffy) /
-+		(clk_get_rate(rs->clk) / rate);
-+	rs->wait_loops = (rs->wait_loops << 1) + 100;
-+	rs->speed = speed;
-+
-+	dev_dbg(&spi->dev, "speed: %lu/%u, rate: %u, prescal: %u, loops: %hu\n",
-+			clk_get_rate(rs->clk) / rate, speed, rate, prescale,
-+			rs->wait_loops);
-+
-+	return prescale;
-+}
-+
-+static u32 get_arbiter_offset(struct spi_master *master)
-+{
-+	u32 offset;
-+
-+	offset = RAMIPS_SPI_ARBITER;
-+	if (master->bus_num == 1)
-+		offset -= RAMIPS_SPI_DEV_OFFSET;
-+
-+	return offset;
-+}
-+
-+static void rt2880_spi_set_cs(struct spi_device *spi, bool enable)
-+{
-+	struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
-+
-+	if (enable)
-+		rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA);
-+	else
-+		rt2880_spi_clrbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA);
-+}
-+
-+static int rt2880_spi_wait_ready(struct rt2880_spi *rs, int len)
-+{
-+	int loop = rs->wait_loops * len;
-+
-+	while ((rt2880_spi_read(rs, RAMIPS_SPI_STAT) & SPISTAT_BUSY) && --loop)
-+		cpu_relax();
-+
-+	if (loop)
-+		return 0;
-+
-+	return -ETIMEDOUT;
-+}
-+
-+static void rt2880_dump_reg(struct spi_master *master)
-+{
-+	struct rt2880_spi *rs = spi_master_get_devdata(master);
-+
-+	dev_dbg(&master->dev, "stat: %08x, cfg: %08x, ctl: %08x, " \
-+			"data: %08x, arb: %08x\n",
-+			rt2880_spi_read(rs, RAMIPS_SPI_STAT),
-+			rt2880_spi_read(rs, RAMIPS_SPI_CFG),
-+			rt2880_spi_read(rs, RAMIPS_SPI_CTL),
-+			rt2880_spi_read(rs, RAMIPS_SPI_DATA),
-+			rt2880_spi_read(rs, get_arbiter_offset(master)));
-+}
-+
-+static int rt2880_spi_transfer_one(struct spi_master *master,
-+		struct spi_device *spi, struct spi_transfer *xfer)
-+{
-+	struct rt2880_spi *rs = spi_master_get_devdata(master);
-+	unsigned len;
-+	const u8 *tx = xfer->tx_buf;
-+	u8 *rx = xfer->rx_buf;
-+	int err = 0;
-+
-+	/* change clock speed  */
-+	if (unlikely(rs->speed != xfer->speed_hz)) {
-+		u32 reg;
-+		reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG);
-+		reg &= ~SPICFG_SPICLK_PRESCALE_MASK;
-+		reg |= rt2880_spi_baudrate_get(spi, xfer->speed_hz);
-+		rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg);
-+	}
-+
-+	if (tx) {
-+		len = xfer->len;
-+		while (len-- > 0) {
-+			rt2880_spi_write(rs, RAMIPS_SPI_DATA, *tx++);
-+			rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTWR);
-+			err = rt2880_spi_wait_ready(rs, 1);
-+			if (err) {
-+				dev_err(&spi->dev, "TX failed, err=%d\n", err);
-+				goto out;
-+			}
-+		}
-+	}
-+
-+	if (rx) {
-+		len = xfer->len;
-+		while (len-- > 0) {
-+			rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTRD);
-+			err = rt2880_spi_wait_ready(rs, 1);
-+			if (err) {
-+				dev_err(&spi->dev, "RX failed, err=%d\n", err);
-+				goto out;
-+			}
-+			*rx++ = (u8) rt2880_spi_read(rs, RAMIPS_SPI_DATA);
-+		}
-+	}
-+
-+out:
-+	return err;
-+}
-+
-+/* copy from spi.c */
-+static void spi_set_cs(struct spi_device *spi, bool enable)
-+{
-+	if (spi->mode & SPI_CS_HIGH)
-+		enable = !enable;
-+
-+	if (spi->cs_gpio >= 0)
-+		gpio_set_value(spi->cs_gpio, !enable);
-+	else if (spi->master->set_cs)
-+		spi->master->set_cs(spi, !enable);
-+}
-+
-+static int rt2880_spi_setup(struct spi_device *spi)
-+{
-+	struct spi_master *master = spi->master;
-+	struct rt2880_spi *rs = spi_master_get_devdata(master);
-+	u32 reg, old_reg, arbit_off;
-+
-+	if ((spi->max_speed_hz > master->max_speed_hz) ||
-+			(spi->max_speed_hz < master->min_speed_hz)) {
-+		dev_err(&spi->dev, "invalide requested speed %d Hz\n",
-+				spi->max_speed_hz);
-+		return -EINVAL;
-+	}
-+
-+	if (!(master->bits_per_word_mask &
-+				BIT(spi->bits_per_word - 1))) {
-+		dev_err(&spi->dev, "invalide bits_per_word %d\n",
-+				spi->bits_per_word);
-+		return -EINVAL;
-+	}
-+
-+	/* the hardware seems can't work on mode0 force it to mode3 */
-+	if ((spi->mode & (SPI_CPOL | SPI_CPHA)) == SPI_MODE_0) {
-+		dev_warn(&spi->dev, "force spi mode3\n");
-+		spi->mode |= SPI_MODE_3;
-+	}
-+
-+	/* chip polarity */
-+	arbit_off = get_arbiter_offset(master);
-+	reg = old_reg = rt2880_spi_read(rs, arbit_off);
-+	if (spi->mode & SPI_CS_HIGH) {
-+		switch (master->bus_num) {
-+		case 1:
-+			reg |= SPI1_POR;
-+			break;
-+		default:
-+			reg |= SPI0_POR;
-+			break;
-+		}
-+	} else {
-+		switch (master->bus_num) {
-+		case 1:
-+			reg &= ~SPI1_POR;
-+			break;
-+		default:
-+			reg &= ~SPI0_POR;
-+			break;
-+		}
-+	}
-+
-+	/* enable spi1 */
-+	if (master->bus_num == 1)
-+		reg |= SPICTL_ARB_EN;
-+
-+	if (reg != old_reg)
-+		rt2880_spi_write(rs, arbit_off, reg);
-+
-+	/* deselected the spi device */
-+	spi_set_cs(spi, false);
-+
-+	rt2880_dump_reg(master);
-+
-+	return 0;
-+}
-+
-+static int rt2880_spi_prepare_message(struct spi_master *master,
-+		struct spi_message *msg)
-+{
-+	struct rt2880_spi *rs = spi_master_get_devdata(master);
-+	struct spi_device *spi = msg->spi;
-+	u32 reg;
-+
-+	if ((rs->mode == spi->mode) && (rs->speed == spi->max_speed_hz))
-+		return 0;
-+
-+#if 0
-+	/* set spido to tri-state */
-+	rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_HIZSDO);
-+#endif
-+
-+	reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG);
-+
-+	reg &= ~(SPICFG_MSBFIRST | SPICFG_SPICLKPOL |
-+			SPICFG_RXCLKEDGE_FALLING |
-+			SPICFG_TXCLKEDGE_FALLING |
-+			SPICFG_SPICLK_PRESCALE_MASK);
-+
-+	/* MSB */
-+	if (!(spi->mode & SPI_LSB_FIRST))
-+		reg |= SPICFG_MSBFIRST;
-+
-+	/* spi mode */
-+	switch (spi->mode & (SPI_CPOL | SPI_CPHA)) {
-+	case SPI_MODE_0:
-+		reg |= SPICFG_TXCLKEDGE_FALLING;
-+		break;
-+	case SPI_MODE_1:
-+		reg |= SPICFG_RXCLKEDGE_FALLING;
-+		break;
-+	case SPI_MODE_2:
-+		reg |= SPICFG_SPICLKPOL | SPICFG_RXCLKEDGE_FALLING;
-+		break;
-+	case SPI_MODE_3:
-+		reg |= SPICFG_SPICLKPOL | SPICFG_TXCLKEDGE_FALLING;
-+		break;
-+	}
-+	rs->mode = spi->mode;
-+
-+#if 0
-+	/* set spiclk and spiena to tri-state */
-+	reg |= SPICFG_HIZSPI;
-+#endif
-+
-+	/* clock divide */
-+	reg |= rt2880_spi_baudrate_get(spi, spi->max_speed_hz);
-+
-+	rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg);
-+
-+	return 0;
-+}
-+
-+static int rt2880_spi_probe(struct platform_device *pdev)
-+{
-+	struct spi_master *master;
-+	struct rt2880_spi *rs;
-+	void __iomem *base;
-+	struct resource *r;
-+	struct clk *clk;
-+	int ret;
-+
-+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+	base = devm_ioremap_resource(&pdev->dev, r);
-+	if (IS_ERR(base))
-+		return PTR_ERR(base);
-+
-+	clk = devm_clk_get(&pdev->dev, NULL);
-+	if (IS_ERR(clk)) {
-+		dev_err(&pdev->dev, "unable to get SYS clock\n");
-+		return PTR_ERR(clk);
-+	}
-+
-+	ret = clk_prepare_enable(clk);
-+	if (ret)
-+		goto err_clk;
-+
-+	master = spi_alloc_master(&pdev->dev, sizeof(*rs));
-+	if (master == NULL) {
-+		dev_dbg(&pdev->dev, "master allocation failed\n");
-+		ret = -ENOMEM;
-+		goto err_clk;
-+	}
-+
-+	master->dev.of_node = pdev->dev.of_node;
-+	master->mode_bits = RT2880_SPI_MODE_BITS;
-+	master->bits_per_word_mask = SPI_BPW_MASK(8);
-+	master->min_speed_hz = clk_get_rate(clk) / 128;
-+	master->max_speed_hz = clk_get_rate(clk) / 2;
-+	master->flags = SPI_MASTER_HALF_DUPLEX;
-+	master->setup = rt2880_spi_setup;
-+	master->prepare_message = rt2880_spi_prepare_message;
-+	master->set_cs = rt2880_spi_set_cs;
-+	master->transfer_one = rt2880_spi_transfer_one,
-+
-+	dev_set_drvdata(&pdev->dev, master);
-+
-+	rs = spi_master_get_devdata(master);
-+	rs->master = master;
-+	rs->base = base;
-+	rs->clk = clk;
-+
-+	if (atomic_inc_return(&hw_reset_count) == 1)
-+		device_reset(&pdev->dev);
-+
-+	ret = devm_spi_register_master(&pdev->dev, master);
-+	if (ret < 0) {
-+		dev_err(&pdev->dev, "devm_spi_register_master error.\n");
-+		goto err_master;
-+	}
-+
-+	return ret;
-+
-+err_master:
-+	spi_master_put(master);
-+	kfree(master);
-+err_clk:
-+	clk_disable_unprepare(clk);
-+
-+	return ret;
-+}
-+
-+static int rt2880_spi_remove(struct platform_device *pdev)
-+{
-+	struct spi_master *master;
-+	struct rt2880_spi *rs;
-+
-+	master = dev_get_drvdata(&pdev->dev);
-+	rs = spi_master_get_devdata(master);
-+
-+	clk_disable_unprepare(rs->clk);
-+	atomic_dec(&hw_reset_count);
-+
-+	return 0;
-+}
-+
-+MODULE_ALIAS("platform:" DRIVER_NAME);
-+
-+static const struct of_device_id rt2880_spi_match[] = {
-+	{ .compatible = "ralink,rt2880-spi" },
-+	{},
-+};
-+MODULE_DEVICE_TABLE(of, rt2880_spi_match);
-+
-+static struct platform_driver rt2880_spi_driver = {
-+	.driver = {
-+		.name = DRIVER_NAME,
-+		.owner = THIS_MODULE,
-+		.of_match_table = rt2880_spi_match,
-+	},
-+	.probe = rt2880_spi_probe,
-+	.remove = rt2880_spi_remove,
-+};
-+
-+module_platform_driver(rt2880_spi_driver);
-+
-+MODULE_DESCRIPTION("Ralink SPI driver");
-+MODULE_AUTHOR("Sergiy <piratfm@gmail.com>");
-+MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
-+MODULE_LICENSE("GPL");