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-rw-r--r--target/linux/ramips/patches-4.14/0043-spi-add-mt7621-support.patch474
1 files changed, 213 insertions, 261 deletions
diff --git a/target/linux/ramips/patches-4.14/0043-spi-add-mt7621-support.patch b/target/linux/ramips/patches-4.14/0043-spi-add-mt7621-support.patch
index d9bc48d69b..b607f2bdf4 100644
--- a/target/linux/ramips/patches-4.14/0043-spi-add-mt7621-support.patch
+++ b/target/linux/ramips/patches-4.14/0043-spi-add-mt7621-support.patch
@@ -1,15 +1,45 @@
-From 87a5fcd57c577cd94b5b080deb98885077c13a42 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Sun, 27 Jul 2014 09:49:07 +0100
-Subject: [PATCH 43/53] spi: add mt7621 support
+From cbd66c626e16743b05af807ad48012c0a097b9fb Mon Sep 17 00:00:00 2001
+From: Stefan Roese <sr@denx.de>
+Date: Mon, 25 Mar 2019 09:29:25 +0100
+Subject: [PATCH] spi: mt7621: Move SPI driver out of staging
-Signed-off-by: John Crispin <blogic@openwrt.org>
+This patch moves the MT7621 SPI driver, which is used on some Ralink /
+MediaTek MT76xx MIPS SoC's, out of the staging directory. No changes to
+the source code are done in this patch.
+
+This driver version was tested successfully on an MT7688 based platform
+with an SPI NOR on CS0 and an SPI NAND on CS1 without any issues (so
+far).
+
+This patch also documents the devicetree bindings for the MT7621 SPI
+device driver.
+
+Signed-off-by: Stefan Roese <sr@denx.de>
+Cc: Rob Herring <robh@kernel.org>
+Cc: Mark Brown <broonie@kernel.org>
+Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Cc: NeilBrown <neil@brown.name>
+Cc: Sankalp Negi <sankalpnegi2310@gmail.com>
+Cc: Chuanhong Guo <gch981213@gmail.com>
+Cc: John Crispin <john@phrozen.org>
+Cc: Armando Miraglia <arma2ff0@gmail.com>
+Signed-off-by: Mark Brown <broonie@kernel.org>
---
- drivers/spi/Kconfig | 6 +
- drivers/spi/Makefile | 1 +
- drivers/spi/spi-mt7621.c | 480 ++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 487 insertions(+)
- create mode 100644 drivers/spi/spi-mt7621.c
+ .../devicetree/bindings/spi/spi-mt7621.txt | 26 ++++++
+ drivers/spi/Kconfig | 6 ++
+ drivers/spi/Makefile | 1 +
+ .../{staging/mt7621-spi => spi}/spi-mt7621.c | 83 +++++++++----------
+ drivers/staging/Kconfig | 2 -
+ drivers/staging/Makefile | 1 -
+ drivers/staging/mt7621-spi/Kconfig | 6 --
+ drivers/staging/mt7621-spi/Makefile | 1 -
+ drivers/staging/mt7621-spi/TODO | 5 --
+ 9 files changed, 74 insertions(+), 57 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/spi/spi-mt7621.txt
+ rename drivers/{staging/mt7621-spi => spi}/spi-mt7621.c (88%)
+ delete mode 100644 drivers/staging/mt7621-spi/Kconfig
+ delete mode 100644 drivers/staging/mt7621-spi/Makefile
+ delete mode 100644 drivers/staging/mt7621-spi/TODO
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -38,45 +68,34 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
obj-$(CONFIG_SPI_OC_TINY) += spi-oc-tiny.o
--- /dev/null
+++ b/drivers/spi/spi-mt7621.c
-@@ -0,0 +1,494 @@
-+/*
-+ * spi-mt7621.c -- MediaTek MT7621 SPI controller driver
-+ *
-+ * Copyright (C) 2011 Sergiy <piratfm@gmail.com>
-+ * Copyright (C) 2011-2013 Gabor Juhos <juhosg@openwrt.org>
-+ * Copyright (C) 2014-2015 Felix Fietkau <nbd@nbd.name>
-+ *
-+ * 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>
+@@ -0,0 +1,416 @@
++// SPDX-License-Identifier: GPL-2.0
++//
++// spi-mt7621.c -- MediaTek MT7621 SPI controller driver
++//
++// Copyright (C) 2011 Sergiy <piratfm@gmail.com>
++// Copyright (C) 2011-2013 Gabor Juhos <juhosg@openwrt.org>
++// Copyright (C) 2014-2015 Felix Fietkau <nbd@nbd.name>
++//
++// Some parts are based on spi-orion.c:
++// Author: Shadi Ammouri <shadi@marvell.com>
++// Copyright (C) 2007-2008 Marvell Ltd.
++
+#include <linux/clk.h>
-+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/io.h>
++#include <linux/module.h>
++#include <linux/of_device.h>
+#include <linux/reset.h>
+#include <linux/spi/spi.h>
-+#include <linux/of_device.h>
-+#include <linux/platform_device.h>
-+#include <linux/swab.h>
+
-+#include <ralink_regs.h>
++#define DRIVER_NAME "spi-mt7621"
+
-+#define SPI_BPW_MASK(bits) BIT((bits) - 1)
-+
-+#define DRIVER_NAME "spi-mt7621"
+/* in usec */
-+#define RALINK_SPI_WAIT_MAX_LOOP 2000
++#define RALINK_SPI_WAIT_MAX_LOOP 2000
+
+/* SPISTAT register bit field */
-+#define SPISTAT_BUSY BIT(0)
++#define SPISTAT_BUSY BIT(0)
+
+#define MT7621_SPI_TRANS 0x00
+#define SPITRANS_BUSY BIT(16)
@@ -87,32 +106,33 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#define SPI_CTL_TX_RX_CNT_MASK 0xff
+#define SPI_CTL_START BIT(8)
+
-+#define MT7621_SPI_POLAR 0x38
+#define MT7621_SPI_MASTER 0x28
++#define MASTER_MORE_BUFMODE BIT(2)
++#define MASTER_FULL_DUPLEX BIT(10)
++#define MASTER_RS_CLK_SEL GENMASK(27, 16)
++#define MASTER_RS_CLK_SEL_SHIFT 16
++#define MASTER_RS_SLAVE_SEL GENMASK(31, 29)
++
+#define MT7621_SPI_MOREBUF 0x2c
++#define MT7621_SPI_POLAR 0x38
+#define MT7621_SPI_SPACE 0x3c
+
+#define MT7621_CPHA BIT(5)
+#define MT7621_CPOL BIT(4)
+#define MT7621_LSB_FIRST BIT(3)
+
-+#define RT2880_SPI_MODE_BITS (SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | SPI_CS_HIGH)
-+
-+struct mt7621_spi;
-+
+struct mt7621_spi {
-+ struct spi_master *master;
++ struct spi_controller *master;
+ void __iomem *base;
+ unsigned int sys_freq;
+ unsigned int speed;
+ struct clk *clk;
-+
-+ struct mt7621_spi_ops *ops;
++ int pending_write;
+};
+
+static inline struct mt7621_spi *spidev_to_mt7621_spi(struct spi_device *spi)
+{
-+ return spi_master_get_devdata(spi->master);
++ return spi_controller_get_devdata(spi->master);
+}
+
+static inline u32 mt7621_spi_read(struct mt7621_spi *rs, u32 reg)
@@ -125,29 +145,25 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ iowrite32(val, rs->base + reg);
+}
+
-+static void mt7621_spi_reset(struct mt7621_spi *rs, int duplex)
-+{
-+ u32 master = mt7621_spi_read(rs, MT7621_SPI_MASTER);
-+
-+ master |= 7 << 29;
-+ master |= 1 << 2;
-+#ifdef CONFIG_SOC_MT7620
-+ if (duplex)
-+ master |= 1 << 10;
-+ else
-+#endif
-+ master &= ~(1 << 10);
-+
-+ mt7621_spi_write(rs, MT7621_SPI_MASTER, master);
-+}
-+
+static void mt7621_spi_set_cs(struct spi_device *spi, int enable)
+{
+ struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
+ int cs = spi->chip_select;
+ u32 polar = 0;
++ u32 master;
++
++ /*
++ * Select SPI device 7, enable "more buffer mode" and disable
++ * full-duplex (only half-duplex really works on this chip
++ * reliably)
++ */
++ master = mt7621_spi_read(rs, MT7621_SPI_MASTER);
++ master |= MASTER_RS_SLAVE_SEL | MASTER_MORE_BUFMODE;
++ master &= ~MASTER_FULL_DUPLEX;
++ mt7621_spi_write(rs, MT7621_SPI_MASTER, master);
++
++ rs->pending_write = 0;
+
-+ mt7621_spi_reset(rs, cs);
+ if (enable)
+ polar = BIT(cs);
+ mt7621_spi_write(rs, MT7621_SPI_POLAR, polar);
@@ -171,45 +187,36 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ rate = 2;
+
+ reg = mt7621_spi_read(rs, MT7621_SPI_MASTER);
-+ reg &= ~(0xfff << 16);
-+ reg |= (rate - 2) << 16;
++ reg &= ~MASTER_RS_CLK_SEL;
++ reg |= (rate - 2) << MASTER_RS_CLK_SEL_SHIFT;
+ rs->speed = speed;
+
+ reg &= ~MT7621_LSB_FIRST;
+ if (spi->mode & SPI_LSB_FIRST)
+ reg |= MT7621_LSB_FIRST;
+
++ /*
++ * This SPI controller seems to be tested on SPI flash only and some
++ * bits are swizzled under other SPI modes probably due to incorrect
++ * wiring inside the silicon. Only mode 0 works correctly.
++ */
+ reg &= ~(MT7621_CPHA | MT7621_CPOL);
-+ switch(spi->mode & (SPI_CPOL | SPI_CPHA)) {
-+ case SPI_MODE_0:
-+ break;
-+ case SPI_MODE_1:
-+ reg |= MT7621_CPHA;
-+ break;
-+ case SPI_MODE_2:
-+ reg |= MT7621_CPOL;
-+ break;
-+ case SPI_MODE_3:
-+ reg |= MT7621_CPOL | MT7621_CPHA;
-+ break;
-+ }
++
+ mt7621_spi_write(rs, MT7621_SPI_MASTER, reg);
+
+ return 0;
+}
+
-+static inline int mt7621_spi_wait_till_ready(struct spi_device *spi)
++static inline int mt7621_spi_wait_till_ready(struct mt7621_spi *rs)
+{
-+ struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
+ int i;
+
+ for (i = 0; i < RALINK_SPI_WAIT_MAX_LOOP; i++) {
+ u32 status;
+
+ status = mt7621_spi_read(rs, MT7621_SPI_TRANS);
-+ if ((status & SPITRANS_BUSY) == 0) {
++ if ((status & SPITRANS_BUSY) == 0)
+ return 0;
-+ }
+ cpu_relax();
+ udelay(1);
+ }
@@ -217,205 +224,157 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ return -ETIMEDOUT;
+}
+
-+static int mt7621_spi_transfer_half_duplex(struct spi_master *master,
-+ struct spi_message *m)
++static void mt7621_spi_read_half_duplex(struct mt7621_spi *rs,
++ int rx_len, u8 *buf)
+{
-+ struct mt7621_spi *rs = spi_master_get_devdata(master);
-+ struct spi_device *spi = m->spi;
-+ unsigned int speed = spi->max_speed_hz;
-+ struct spi_transfer *t = NULL;
-+ int status = 0;
-+ int i, len = 0;
-+ int rx_len = 0;
-+ u32 data[9] = { 0 };
-+ u32 val;
-+
-+ mt7621_spi_wait_till_ready(spi);
-+
-+ list_for_each_entry(t, &m->transfers, transfer_list) {
-+ const u8 *buf = t->tx_buf;
-+
-+ if (t->rx_buf)
-+ rx_len += t->len;
-+
-+ if (!buf)
-+ continue;
-+
-+ if (t->speed_hz < speed)
-+ speed = t->speed_hz;
-+
-+ /*
-+ * m25p80 might attempt to write more data than we can handle.
-+ * truncate the message to what we can fit into the registers
-+ */
-+ if (len + t->len > 36)
-+ t->len = 36 - len;
++ int tx_len;
++
++ /*
++ * Combine with any pending write, and perform one or more half-duplex
++ * transactions reading 'len' bytes. Data to be written is already in
++ * MT7621_SPI_DATA.
++ */
++ tx_len = rs->pending_write;
++ rs->pending_write = 0;
++
++ while (rx_len || tx_len) {
++ int i;
++ u32 val = (min(tx_len, 4) * 8) << 24;
++ int rx = min(rx_len, 32);
++
++ if (tx_len > 4)
++ val |= (tx_len - 4) * 8;
++ val |= (rx * 8) << 12;
++ mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);
++
++ tx_len = 0;
++
++ val = mt7621_spi_read(rs, MT7621_SPI_TRANS);
++ val |= SPI_CTL_START;
++ mt7621_spi_write(rs, MT7621_SPI_TRANS, val);
++
++ mt7621_spi_wait_till_ready(rs);
++
++ for (i = 0; i < rx; i++) {
++ if ((i % 4) == 0)
++ val = mt7621_spi_read(rs, MT7621_SPI_DATA0 + i);
++ *buf++ = val & 0xff;
++ val >>= 8;
++ }
+
-+ for (i = 0; i < t->len; i++, len++)
-+ data[len / 4] |= buf[i] << (8 * (len & 3));
++ rx_len -= i;
+ }
++}
+
-+ if (WARN_ON(rx_len > 32)) {
-+ status = -EIO;
-+ goto msg_done;
-+ }
++static inline void mt7621_spi_flush(struct mt7621_spi *rs)
++{
++ mt7621_spi_read_half_duplex(rs, 0, NULL);
++}
+
-+ if (mt7621_spi_prepare(spi, speed)) {
-+ status = -EIO;
-+ goto msg_done;
++static void mt7621_spi_write_half_duplex(struct mt7621_spi *rs,
++ int tx_len, const u8 *buf)
++{
++ int len = rs->pending_write;
++ int val = 0;
++
++ if (len & 3) {
++ val = mt7621_spi_read(rs, MT7621_SPI_OPCODE + (len & ~3));
++ if (len < 4) {
++ val <<= (4 - len) * 8;
++ val = swab32(val);
++ }
+ }
-+ data[0] = swab32(data[0]);
-+ if (len < 4)
-+ data[0] >>= (4 - len) * 8;
-+
-+ for (i = 0; i < len; i += 4)
-+ mt7621_spi_write(rs, MT7621_SPI_OPCODE + i, data[i / 4]);
-+
-+ val = (min_t(int, len, 4) * 8) << 24;
-+ if (len > 4)
-+ val |= (len - 4) * 8;
-+ val |= (rx_len * 8) << 12;
-+ mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);
-+
-+ mt7621_spi_set_cs(spi, 1);
-+
-+ val = mt7621_spi_read(rs, MT7621_SPI_TRANS);
-+ val |= SPI_CTL_START;
-+ mt7621_spi_write(rs, MT7621_SPI_TRANS, val);
+
-+ mt7621_spi_wait_till_ready(spi);
-+
-+ mt7621_spi_set_cs(spi, 0);
-+
-+ for (i = 0; i < rx_len; i += 4)
-+ data[i / 4] = mt7621_spi_read(rs, MT7621_SPI_DATA0 + i);
-+
-+ m->actual_length = len + rx_len;
-+
-+ len = 0;
-+ list_for_each_entry(t, &m->transfers, transfer_list) {
-+ u8 *buf = t->rx_buf;
-+
-+ if (!buf)
-+ continue;
++ while (tx_len > 0) {
++ if (len >= 36) {
++ rs->pending_write = len;
++ mt7621_spi_flush(rs);
++ len = 0;
++ }
+
-+ for (i = 0; i < t->len; i++, len++)
-+ buf[i] = data[len / 4] >> (8 * (len & 3));
++ val |= *buf++ << (8 * (len & 3));
++ len++;
++ if ((len & 3) == 0) {
++ if (len == 4)
++ /* The byte-order of the opcode is weird! */
++ val = swab32(val);
++ mt7621_spi_write(rs, MT7621_SPI_OPCODE + len - 4, val);
++ val = 0;
++ }
++ tx_len -= 1;
+ }
+
-+msg_done:
-+ m->status = status;
-+ spi_finalize_current_message(master);
++ if (len & 3) {
++ if (len < 4) {
++ val = swab32(val);
++ val >>= (4 - len) * 8;
++ }
++ mt7621_spi_write(rs, MT7621_SPI_OPCODE + (len & ~3), val);
++ }
+
-+ return 0;
++ rs->pending_write = len;
+}
+
-+#ifdef CONFIG_SOC_MT7620
-+static int mt7621_spi_transfer_full_duplex(struct spi_master *master,
++static int mt7621_spi_transfer_one_message(struct spi_controller *master,
+ struct spi_message *m)
+{
-+ struct mt7621_spi *rs = spi_master_get_devdata(master);
++ struct mt7621_spi *rs = spi_controller_get_devdata(master);
+ struct spi_device *spi = m->spi;
+ unsigned int speed = spi->max_speed_hz;
+ struct spi_transfer *t = NULL;
+ int status = 0;
-+ int i, len = 0;
-+ int rx_len = 0;
-+ u32 data[9] = { 0 };
-+ u32 val = 0;
+
-+ mt7621_spi_wait_till_ready(spi);
++ mt7621_spi_wait_till_ready(rs);
+
-+ list_for_each_entry(t, &m->transfers, transfer_list) {
-+ const u8 *buf = t->tx_buf;
-+
-+ if (t->rx_buf)
-+ rx_len += t->len;
-+
-+ if (!buf)
-+ continue;
-+
-+ if (WARN_ON(len + t->len > 16)) {
-+ status = -EIO;
-+ goto msg_done;
-+ }
-+
-+ for (i = 0; i < t->len; i++, len++)
-+ data[len / 4] |= buf[i] << (8 * (len & 3));
-+ if (speed > t->speed_hz)
++ list_for_each_entry(t, &m->transfers, transfer_list)
++ if (t->speed_hz < speed)
+ speed = t->speed_hz;
-+ }
-+
-+ if (WARN_ON(rx_len > 16)) {
-+ status = -EIO;
-+ goto msg_done;
-+ }
+
+ if (mt7621_spi_prepare(spi, speed)) {
+ status = -EIO;
+ goto msg_done;
+ }
+
-+ for (i = 0; i < len; i += 4)
-+ mt7621_spi_write(rs, MT7621_SPI_DATA0 + i, data[i / 4]);
-+
-+ val |= len * 8;
-+ val |= (rx_len * 8) << 12;
-+ mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);
-+
++ /* Assert CS */
+ mt7621_spi_set_cs(spi, 1);
+
-+ val = mt7621_spi_read(rs, MT7621_SPI_TRANS);
-+ val |= SPI_CTL_START;
-+ mt7621_spi_write(rs, MT7621_SPI_TRANS, val);
-+
-+ mt7621_spi_wait_till_ready(spi);
-+
-+ mt7621_spi_set_cs(spi, 0);
-+
-+ for (i = 0; i < rx_len; i += 4)
-+ data[i / 4] = mt7621_spi_read(rs, MT7621_SPI_DATA4 + i);
-+
-+ m->actual_length = rx_len;
-+
-+ len = 0;
++ m->actual_length = 0;
+ list_for_each_entry(t, &m->transfers, transfer_list) {
-+ u8 *buf = t->rx_buf;
-+
-+ if (!buf)
-+ continue;
-+
-+ for (i = 0; i < t->len; i++, len++)
-+ buf[i] = data[len / 4] >> (8 * (len & 3));
++ if ((t->rx_buf) && (t->tx_buf)) {
++ /*
++ * This controller will shift some extra data out
++ * of spi_opcode if (mosi_bit_cnt > 0) &&
++ * (cmd_bit_cnt == 0). So the claimed full-duplex
++ * support is broken since we have no way to read
++ * the MISO value during that bit.
++ */
++ status = -EIO;
++ goto msg_done;
++ } else if (t->rx_buf) {
++ mt7621_spi_read_half_duplex(rs, t->len, t->rx_buf);
++ } else if (t->tx_buf) {
++ mt7621_spi_write_half_duplex(rs, t->len, t->tx_buf);
++ }
++ m->actual_length += t->len;
+ }
+
++ /* Flush data and deassert CS */
++ mt7621_spi_flush(rs);
++ mt7621_spi_set_cs(spi, 0);
++
+msg_done:
+ m->status = status;
+ spi_finalize_current_message(master);
+
+ return 0;
+}
-+#endif
-+
-+static int mt7621_spi_transfer_one_message(struct spi_master *master,
-+ struct spi_message *m)
-+{
-+ struct spi_device *spi = m->spi;
-+#ifdef CONFIG_SOC_MT7620
-+ int cs = spi->chip_select;
-+
-+ if (cs)
-+ return mt7621_spi_transfer_full_duplex(master, m);
-+#endif
-+ return mt7621_spi_transfer_half_duplex(master, m);
-+}
+
+static int mt7621_spi_setup(struct spi_device *spi)
+{
+ struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
+
+ if ((spi->max_speed_hz == 0) ||
-+ (spi->max_speed_hz > (rs->sys_freq / 2)))
++ (spi->max_speed_hz > (rs->sys_freq / 2)))
+ spi->max_speed_hz = (rs->sys_freq / 2);
+
+ if (spi->max_speed_hz < (rs->sys_freq / 4097)) {
@@ -433,26 +392,20 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+};
+MODULE_DEVICE_TABLE(of, mt7621_spi_match);
+
-+static size_t mt7621_max_transfer_size(struct spi_device *spi)
-+{
-+ return 32;
-+}
-+
+static int mt7621_spi_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
-+ struct spi_master *master;
++ struct spi_controller *master;
+ struct mt7621_spi *rs;
+ void __iomem *base;
+ struct resource *r;
+ int status = 0;
+ struct clk *clk;
-+ struct mt7621_spi_ops *ops;
++ int ret;
+
+ match = of_match_device(mt7621_spi_match, &pdev->dev);
+ if (!match)
+ return -EINVAL;
-+ ops = (struct mt7621_spi_ops *)match->data;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, r);
@@ -471,47 +424,47 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ return status;
+
+ master = spi_alloc_master(&pdev->dev, sizeof(*rs));
-+ if (master == NULL) {
++ if (!master) {
+ dev_info(&pdev->dev, "master allocation failed\n");
+ return -ENOMEM;
+ }
+
-+ master->mode_bits = RT2880_SPI_MODE_BITS;
-+
++ master->mode_bits = SPI_LSB_FIRST;
++ master->flags = SPI_CONTROLLER_HALF_DUPLEX;
+ master->setup = mt7621_spi_setup;
+ master->transfer_one_message = mt7621_spi_transfer_one_message;
+ master->bits_per_word_mask = SPI_BPW_MASK(8);
+ master->dev.of_node = pdev->dev.of_node;
+ master->num_chipselect = 2;
-+ master->max_transfer_size = mt7621_max_transfer_size;
+
+ dev_set_drvdata(&pdev->dev, master);
+
-+ rs = spi_master_get_devdata(master);
++ rs = spi_controller_get_devdata(master);
+ rs->base = base;
+ rs->clk = clk;
+ rs->master = master;
+ rs->sys_freq = clk_get_rate(rs->clk);
-+ rs->ops = ops;
++ rs->pending_write = 0;
+ dev_info(&pdev->dev, "sys_freq: %u\n", rs->sys_freq);
+
-+ device_reset(&pdev->dev);
-+
-+ mt7621_spi_reset(rs, 0);
++ ret = device_reset(&pdev->dev);
++ if (ret) {
++ dev_err(&pdev->dev, "SPI reset failed!\n");
++ return ret;
++ }
+
-+ return spi_register_master(master);
++ return devm_spi_register_controller(&pdev->dev, master);
+}
+
+static int mt7621_spi_remove(struct platform_device *pdev)
+{
-+ struct spi_master *master;
++ struct spi_controller *master;
+ struct mt7621_spi *rs;
+
+ master = dev_get_drvdata(&pdev->dev);
-+ rs = spi_master_get_devdata(master);
++ rs = spi_controller_get_devdata(master);
+
-+ clk_disable(rs->clk);
-+ spi_unregister_master(master);
++ clk_disable_unprepare(rs->clk);
+
+ return 0;
+}
@@ -521,7 +474,6 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+static struct platform_driver mt7621_spi_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
-+ .owner = THIS_MODULE,
+ .of_match_table = mt7621_spi_match,
+ },
+ .probe = mt7621_spi_probe,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 02:17:28 +0000