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Diffstat (limited to 'target/linux/brcm63xx/patches-3.1/240-spi.patch')
-rw-r--r--target/linux/brcm63xx/patches-3.1/240-spi.patch930
1 files changed, 0 insertions, 930 deletions
diff --git a/target/linux/brcm63xx/patches-3.1/240-spi.patch b/target/linux/brcm63xx/patches-3.1/240-spi.patch
deleted file mode 100644
index 113d7b0f7d..0000000000
--- a/target/linux/brcm63xx/patches-3.1/240-spi.patch
+++ /dev/null
@@ -1,930 +0,0 @@
---- a/arch/mips/bcm63xx/cpu.c
-+++ b/arch/mips/bcm63xx/cpu.c
-@@ -58,6 +58,7 @@ static const unsigned long bcm96338_regs
-
- static const int bcm96338_irqs[] = {
- [IRQ_TIMER] = BCM_6338_TIMER_IRQ,
-+ [IRQ_SPI] = BCM_6338_SPI_IRQ,
- [IRQ_UART0] = BCM_6338_UART0_IRQ,
- [IRQ_DSL] = BCM_6338_DSL_IRQ,
- [IRQ_ENET0] = BCM_6338_ENET0_IRQ,
-@@ -132,6 +133,7 @@ static const unsigned long bcm96348_regs
-
- static const int bcm96348_irqs[] = {
- [IRQ_TIMER] = BCM_6348_TIMER_IRQ,
-+ [IRQ_SPI] = BCM_6348_SPI_IRQ,
- [IRQ_UART0] = BCM_6348_UART0_IRQ,
- [IRQ_DSL] = BCM_6348_DSL_IRQ,
- [IRQ_ENET0] = BCM_6348_ENET0_IRQ,
-@@ -175,6 +177,7 @@ static const unsigned long bcm96358_regs
-
- static const int bcm96358_irqs[] = {
- [IRQ_TIMER] = BCM_6358_TIMER_IRQ,
-+ [IRQ_SPI] = BCM_6358_SPI_IRQ,
- [IRQ_UART0] = BCM_6358_UART0_IRQ,
- [IRQ_UART1] = BCM_6358_UART1_IRQ,
- [IRQ_DSL] = BCM_6358_DSL_IRQ,
---- /dev/null
-+++ b/arch/mips/bcm63xx/dev-spi.c
-@@ -0,0 +1,98 @@
-+/*
-+ * This file is subject to the terms and conditions of the GNU General Public
-+ * License. See the file "COPYING" in the main directory of this archive
-+ * for more details.
-+ *
-+ * Copyright (C) 2009-2011 Florian Fainelli <florian@openwrt.org>
-+ * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
-+ */
-+
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/platform_device.h>
-+
-+#include <bcm63xx_cpu.h>
-+#include <bcm63xx_dev_spi.h>
-+#include <bcm63xx_regs.h>
-+
-+#ifdef BCMCPU_RUNTIME_DETECT
-+/*
-+ * register offsets
-+ */
-+static const unsigned long bcm96338_regs_spi[] = {
-+ __GEN_SPI_REGS_TABLE(6338)
-+};
-+
-+static const unsigned long bcm96348_regs_spi[] = {
-+ __GEN_SPI_REGS_TABLE(6348)
-+};
-+
-+static const unsigned long bcm96358_regs_spi[] = {
-+ __GEN_SPI_REGS_TABLE(6358)
-+};
-+
-+const unsigned long *bcm63xx_regs_spi;
-+EXPORT_SYMBOL(bcm63xx_regs_spi);
-+
-+static __init void bcm63xx_spi_regs_init(void)
-+{
-+ if (BCMCPU_IS_6338())
-+ bcm63xx_regs_spi = bcm96338_regs_spi;
-+ if (BCMCPU_IS_6348())
-+ bcm63xx_regs_spi = bcm96348_regs_spi;
-+ if (BCMCPU_IS_6358())
-+ bcm63xx_regs_spi = bcm96358_regs_spi;
-+}
-+#else
-+static __init void bcm63xx_spi_regs_init(void) { }
-+#endif
-+
-+static struct resource spi_resources[] = {
-+ {
-+ .start = -1, /* filled at runtime */
-+ .end = -1, /* filled at runtime */
-+ .flags = IORESOURCE_MEM,
-+ },
-+ {
-+ .start = -1, /* filled at runtime */
-+ .flags = IORESOURCE_IRQ,
-+ },
-+};
-+
-+static struct bcm63xx_spi_pdata spi_pdata = {
-+ .bus_num = 0,
-+ .num_chipselect = 8,
-+ .speed_hz = 50000000, /* Fclk */
-+};
-+
-+static struct platform_device bcm63xx_spi_device = {
-+ .name = "bcm63xx-spi",
-+ .id = 0,
-+ .num_resources = ARRAY_SIZE(spi_resources),
-+ .resource = spi_resources,
-+ .dev = {
-+ .platform_data = &spi_pdata,
-+ },
-+};
-+
-+int __init bcm63xx_spi_register(void)
-+{
-+ spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
-+ spi_resources[0].end = spi_resources[0].start;
-+ spi_resources[0].end += RSET_SPI_SIZE - 1;
-+ spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
-+
-+ if (BCMCPU_IS_6345())
-+ return -ENODEV;
-+
-+ /* Fill in platform data */
-+ if (BCMCPU_IS_6338() || BCMCPU_IS_6348())
-+ spi_pdata.fifo_size = SPI_BCM_6338_SPI_MSG_DATA_SIZE;
-+
-+ if (BCMCPU_IS_6358())
-+ spi_pdata.fifo_size = SPI_BCM_6358_SPI_MSG_DATA_SIZE;
-+
-+ bcm63xx_spi_regs_init();
-+
-+ return platform_device_register(&bcm63xx_spi_device);
-+}
---- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
-+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
-@@ -109,6 +109,7 @@ enum bcm63xx_regs_set {
- #define RSET_WDT_SIZE 12
- #define RSET_ENET_SIZE 2048
- #define RSET_ENETDMA_SIZE 2048
-+#define RSET_SPI_SIZE 256
- #define RSET_UART_SIZE 24
- #define RSET_UDC_SIZE 256
- #define RSET_OHCI_SIZE 256
-@@ -214,7 +215,7 @@ enum bcm63xx_regs_set {
- #define BCM_6358_UART0_BASE (0xfffe0100)
- #define BCM_6358_UART1_BASE (0xfffe0120)
- #define BCM_6358_GPIO_BASE (0xfffe0080)
--#define BCM_6358_SPI_BASE (0xdeadbeef)
-+#define BCM_6358_SPI_BASE (0xfffe0800)
- #define BCM_6358_UDC0_BASE (0xfffe0400)
- #define BCM_6358_OHCI0_BASE (0xfffe1400)
- #define BCM_6358_OHCI_PRIV_BASE (0xdeadbeef)
-@@ -441,6 +442,7 @@ static inline unsigned long bcm63xx_regs
- */
- enum bcm63xx_irq {
- IRQ_TIMER = 0,
-+ IRQ_SPI,
- IRQ_UART0,
- IRQ_UART1,
- IRQ_DSL,
-@@ -507,6 +509,7 @@ enum bcm63xx_irq {
- * 6348 irqs
- */
- #define BCM_6348_TIMER_IRQ (IRQ_INTERNAL_BASE + 0)
-+#define BCM_6348_SPI_IRQ (IRQ_INTERNAL_BASE + 1)
- #define BCM_6348_UART0_IRQ (IRQ_INTERNAL_BASE + 2)
- #define BCM_6348_DSL_IRQ (IRQ_INTERNAL_BASE + 4)
- #define BCM_6348_UDC0_IRQ (IRQ_INTERNAL_BASE + 6)
-@@ -531,6 +534,7 @@ enum bcm63xx_irq {
- * 6358 irqs
- */
- #define BCM_6358_TIMER_IRQ (IRQ_INTERNAL_BASE + 0)
-+#define BCM_6358_SPI_IRQ (IRQ_INTERNAL_BASE + 1)
- #define BCM_6358_UART0_IRQ (IRQ_INTERNAL_BASE + 2)
- #define BCM_6358_UART1_IRQ (IRQ_INTERNAL_BASE + 3)
- #define BCM_6358_OHCI0_IRQ (IRQ_INTERNAL_BASE + 5)
---- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
-+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
-@@ -804,4 +804,116 @@
- #define DMIPSPLLCFG_N2_SHIFT 29
- #define DMIPSPLLCFG_N2_MASK (0x7 << DMIPSPLLCFG_N2_SHIFT)
-
-+/*************************************************************************
-+ * _REG relative to RSET_SPI
-+ *************************************************************************/
-+
-+/* BCM 6338 SPI core */
-+#define SPI_BCM_6338_SPI_CMD 0x00 /* 16-bits register */
-+#define SPI_BCM_6338_SPI_INT_STATUS 0x02
-+#define SPI_BCM_6338_SPI_INT_MASK_ST 0x03
-+#define SPI_BCM_6338_SPI_INT_MASK 0x04
-+#define SPI_BCM_6338_SPI_ST 0x05
-+#define SPI_BCM_6338_SPI_CLK_CFG 0x06
-+#define SPI_BCM_6338_SPI_FILL_BYTE 0x07
-+#define SPI_BCM_6338_SPI_MSG_TAIL 0x09
-+#define SPI_BCM_6338_SPI_RX_TAIL 0x0b
-+#define SPI_BCM_6338_SPI_MSG_CTL 0x40
-+#define SPI_BCM_6338_SPI_MSG_DATA 0x41
-+#define SPI_BCM_6338_SPI_MSG_DATA_SIZE 0x3f
-+#define SPI_BCM_6338_SPI_RX_DATA 0x80
-+#define SPI_BCM_6338_SPI_RX_DATA_SIZE 0x3f
-+
-+/* BCM 6348 SPI core */
-+#define SPI_BCM_6348_SPI_CMD 0x00 /* 16-bits register */
-+#define SPI_BCM_6348_SPI_INT_STATUS 0x02
-+#define SPI_BCM_6348_SPI_INT_MASK_ST 0x03
-+#define SPI_BCM_6348_SPI_INT_MASK 0x04
-+#define SPI_BCM_6348_SPI_ST 0x05
-+#define SPI_BCM_6348_SPI_CLK_CFG 0x06
-+#define SPI_BCM_6348_SPI_FILL_BYTE 0x07
-+#define SPI_BCM_6348_SPI_MSG_TAIL 0x09
-+#define SPI_BCM_6348_SPI_RX_TAIL 0x0b
-+#define SPI_BCM_6348_SPI_MSG_CTL 0x40
-+#define SPI_BCM_6348_SPI_MSG_DATA 0x41
-+#define SPI_BCM_6348_SPI_MSG_DATA_SIZE 0x3f
-+#define SPI_BCM_6348_SPI_RX_DATA 0x80
-+#define SPI_BCM_6348_SPI_RX_DATA_SIZE 0x3f
-+
-+/* BCM 6358 SPI core */
-+#define SPI_BCM_6358_SPI_MSG_CTL 0x00 /* 16-bits register */
-+
-+#define SPI_BCM_6358_SPI_MSG_DATA 0x02
-+#define SPI_BCM_6358_SPI_MSG_DATA_SIZE 0x21e
-+
-+#define SPI_BCM_6358_SPI_RX_DATA 0x400
-+#define SPI_BCM_6358_SPI_RX_DATA_SIZE 0x220
-+
-+#define SPI_BCM_6358_SPI_CMD 0x700 /* 16-bits register */
-+
-+#define SPI_BCM_6358_SPI_INT_STATUS 0x702
-+#define SPI_BCM_6358_SPI_INT_MASK_ST 0x703
-+
-+#define SPI_BCM_6358_SPI_INT_MASK 0x704
-+
-+#define SPI_BCM_6358_SPI_ST 0x705
-+
-+#define SPI_BCM_6358_SPI_CLK_CFG 0x706
-+
-+#define SPI_BCM_6358_SPI_FILL_BYTE 0x707
-+#define SPI_BCM_6358_SPI_MSG_TAIL 0x709
-+#define SPI_BCM_6358_SPI_RX_TAIL 0x70B
-+
-+/* Shared SPI definitions */
-+
-+/* Message configuration */
-+#define SPI_FD_RW 0x00
-+#define SPI_HD_W 0x01
-+#define SPI_HD_R 0x02
-+#define SPI_BYTE_CNT_SHIFT 0
-+#define SPI_MSG_TYPE_SHIFT 14
-+
-+/* Command */
-+#define SPI_CMD_NOOP 0x00
-+#define SPI_CMD_SOFT_RESET 0x01
-+#define SPI_CMD_HARD_RESET 0x02
-+#define SPI_CMD_START_IMMEDIATE 0x03
-+#define SPI_CMD_COMMAND_SHIFT 0
-+#define SPI_CMD_COMMAND_MASK 0x000f
-+#define SPI_CMD_DEVICE_ID_SHIFT 4
-+#define SPI_CMD_PREPEND_BYTE_CNT_SHIFT 8
-+#define SPI_CMD_ONE_BYTE_SHIFT 11
-+#define SPI_CMD_ONE_WIRE_SHIFT 12
-+#define SPI_DEV_ID_0 0
-+#define SPI_DEV_ID_1 1
-+#define SPI_DEV_ID_2 2
-+#define SPI_DEV_ID_3 3
-+
-+/* Interrupt mask */
-+#define SPI_INTR_CMD_DONE 0x01
-+#define SPI_INTR_RX_OVERFLOW 0x02
-+#define SPI_INTR_TX_UNDERFLOW 0x04
-+#define SPI_INTR_TX_OVERFLOW 0x08
-+#define SPI_INTR_RX_UNDERFLOW 0x10
-+#define SPI_INTR_CLEAR_ALL 0x1f
-+
-+/* Status */
-+#define SPI_RX_EMPTY 0x02
-+#define SPI_CMD_BUSY 0x04
-+#define SPI_SERIAL_BUSY 0x08
-+
-+/* Clock configuration */
-+#define SPI_CLK_20MHZ 0x00
-+#define SPI_CLK_0_391MHZ 0x01
-+#define SPI_CLK_0_781MHZ 0x02 /* default */
-+#define SPI_CLK_1_563MHZ 0x03
-+#define SPI_CLK_3_125MHZ 0x04
-+#define SPI_CLK_6_250MHZ 0x05
-+#define SPI_CLK_12_50MHZ 0x06
-+#define SPI_CLK_25MHZ 0x07
-+#define SPI_CLK_MASK 0x07
-+#define SPI_SSOFFTIME_MASK 0x38
-+#define SPI_SSOFFTIME_SHIFT 3
-+#define SPI_BYTE_SWAP 0x80
-+
- #endif /* BCM63XX_REGS_H_ */
---- /dev/null
-+++ b/drivers/spi/bcm63xx_spi.c
-@@ -0,0 +1,496 @@
-+/*
-+ * Broadcom BCM63xx SPI controller support
-+ *
-+ * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org>
-+ * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.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; either version 2
-+ * of the License, or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the
-+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/init.h>
-+#include <linux/clk.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/delay.h>
-+#include <linux/interrupt.h>
-+#include <linux/spi/spi.h>
-+#include <linux/completion.h>
-+#include <linux/err.h>
-+
-+#include <bcm63xx_dev_spi.h>
-+
-+#define PFX KBUILD_MODNAME
-+#define DRV_VER "0.1.2"
-+
-+struct bcm63xx_spi {
-+ spinlock_t lock;
-+ int stopping;
-+ struct completion done;
-+
-+ void __iomem *regs;
-+ int irq;
-+
-+ /* Platform data */
-+ u32 speed_hz;
-+ unsigned fifo_size;
-+
-+ /* Data buffers */
-+ const unsigned char *tx_ptr;
-+ unsigned char *rx_ptr;
-+
-+ /* data iomem */
-+ u8 __iomem *tx_io;
-+ const u8 __iomem *rx_io;
-+
-+ int remaining_bytes;
-+
-+ struct clk *clk;
-+ struct platform_device *pdev;
-+};
-+
-+static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs,
-+ unsigned int offset)
-+{
-+ return bcm_readw(bs->regs + bcm63xx_spireg(offset));
-+}
-+
-+static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs,
-+ unsigned int offset)
-+{
-+ return bcm_readw(bs->regs + bcm63xx_spireg(offset));
-+}
-+
-+static inline void bcm_spi_writeb(struct bcm63xx_spi *bs,
-+ u8 value, unsigned int offset)
-+{
-+ bcm_writeb(value, bs->regs + bcm63xx_spireg(offset));
-+}
-+
-+static inline void bcm_spi_writew(struct bcm63xx_spi *bs,
-+ u16 value, unsigned int offset)
-+{
-+ bcm_writew(value, bs->regs + bcm63xx_spireg(offset));
-+}
-+
-+static int bcm63xx_spi_setup_transfer(struct spi_device *spi,
-+ struct spi_transfer *t)
-+{
-+ u8 bits_per_word;
-+ u8 clk_cfg;
-+ u32 hz;
-+ unsigned int div;
-+
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
-+
-+ bits_per_word = (t) ? t->bits_per_word : spi->bits_per_word;
-+ hz = (t) ? t->speed_hz : spi->max_speed_hz;
-+ if (bits_per_word != 8) {
-+ dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n",
-+ __func__, bits_per_word);
-+ return -EINVAL;
-+ }
-+
-+ if (spi->chip_select > spi->master->num_chipselect) {
-+ dev_err(&spi->dev, "%s, unsupported slave %d\n",
-+ __func__, spi->chip_select);
-+ return -EINVAL;
-+ }
-+
-+ /* Check clock setting */
-+ div = (bs->speed_hz / hz);
-+ switch (div) {
-+ case 2:
-+ clk_cfg = SPI_CLK_25MHZ;
-+ break;
-+ case 4:
-+ clk_cfg = SPI_CLK_12_50MHZ;
-+ break;
-+ case 8:
-+ clk_cfg = SPI_CLK_6_250MHZ;
-+ break;
-+ case 16:
-+ clk_cfg = SPI_CLK_3_125MHZ;
-+ break;
-+ case 32:
-+ clk_cfg = SPI_CLK_1_563MHZ;
-+ break;
-+ case 64:
-+ clk_cfg = SPI_CLK_0_781MHZ;
-+ break;
-+ case 128:
-+ default:
-+ /* Set to slowest mode for compatibility */
-+ clk_cfg = SPI_CLK_0_391MHZ;
-+ break;
-+ }
-+
-+ bcm_spi_writeb(bs, clk_cfg, SPI_CLK_CFG);
-+ dev_dbg(&spi->dev, "Setting clock register to %d (hz %d, cmd %02x)\n",
-+ div, hz, clk_cfg);
-+
-+ return 0;
-+}
-+
-+/* the spi->mode bits understood by this driver: */
-+#define MODEBITS (SPI_CPOL | SPI_CPHA)
-+
-+static int bcm63xx_spi_setup(struct spi_device *spi)
-+{
-+ struct bcm63xx_spi *bs;
-+ int ret;
-+
-+ bs = spi_master_get_devdata(spi->master);
-+
-+ if (bs->stopping)
-+ return -ESHUTDOWN;
-+
-+ if (!spi->bits_per_word)
-+ spi->bits_per_word = 8;
-+
-+ if (spi->mode & ~MODEBITS) {
-+ dev_err(&spi->dev, "%s, unsupported mode bits %x\n",
-+ __func__, spi->mode & ~MODEBITS);
-+ return -EINVAL;
-+ }
-+
-+ ret = bcm63xx_spi_setup_transfer(spi, NULL);
-+ if (ret < 0) {
-+ dev_err(&spi->dev, "setup: unsupported mode bits %x\n",
-+ spi->mode & ~MODEBITS);
-+ return ret;
-+ }
-+
-+ dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec/bit\n",
-+ __func__, spi->mode & MODEBITS, spi->bits_per_word, 0);
-+
-+ return 0;
-+}
-+
-+/* Fill the TX FIFO with as many bytes as possible */
-+static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs)
-+{
-+ u8 size;
-+
-+ /* Fill the Tx FIFO with as many bytes as possible */
-+ size = bs->remaining_bytes < bs->fifo_size ? bs->remaining_bytes :
-+ bs->fifo_size;
-+ memcpy_toio(bs->tx_io, bs->tx_ptr, size);
-+ bs->remaining_bytes -= size;
-+}
-+
-+static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
-+{
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
-+ u16 msg_ctl;
-+ u16 cmd;
-+
-+ dev_dbg(&spi->dev, "txrx: tx %p, rx %p, len %d\n",
-+ t->tx_buf, t->rx_buf, t->len);
-+
-+ /* Transmitter is inhibited */
-+ bs->tx_ptr = t->tx_buf;
-+ bs->rx_ptr = t->rx_buf;
-+ init_completion(&bs->done);
-+
-+ if (t->tx_buf) {
-+ bs->remaining_bytes = t->len;
-+ bcm63xx_spi_fill_tx_fifo(bs);
-+ }
-+
-+ /* Enable the command done interrupt which
-+ * we use to determine completion of a command */
-+ bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK);
-+
-+ /* Fill in the Message control register */
-+ msg_ctl = (t->len << SPI_BYTE_CNT_SHIFT);
-+
-+ if (t->rx_buf && t->tx_buf)
-+ msg_ctl |= (SPI_FD_RW << SPI_MSG_TYPE_SHIFT);
-+ else if (t->rx_buf)
-+ msg_ctl |= (SPI_HD_R << SPI_MSG_TYPE_SHIFT);
-+ else if (t->tx_buf)
-+ msg_ctl |= (SPI_HD_W << SPI_MSG_TYPE_SHIFT);
-+
-+ bcm_spi_writew(bs, msg_ctl, SPI_MSG_CTL);
-+
-+ /* Issue the transfer */
-+ cmd = SPI_CMD_START_IMMEDIATE;
-+ cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-+ cmd |= (spi->chip_select << SPI_CMD_DEVICE_ID_SHIFT);
-+ bcm_spi_writew(bs, cmd, SPI_CMD);
-+ wait_for_completion(&bs->done);
-+
-+ /* Disable the CMD_DONE interrupt */
-+ bcm_spi_writeb(bs, 0, SPI_INT_MASK);
-+
-+ return t->len - bs->remaining_bytes;
-+}
-+
-+static int bcm63xx_transfer(struct spi_device *spi, struct spi_message *m)
-+{
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
-+ struct spi_transfer *t;
-+ int ret = 0;
-+
-+ if (unlikely(list_empty(&m->transfers)))
-+ return -EINVAL;
-+
-+ if (bs->stopping)
-+ return -ESHUTDOWN;
-+
-+ list_for_each_entry(t, &m->transfers, transfer_list) {
-+ ret += bcm63xx_txrx_bufs(spi, t);
-+ }
-+
-+ m->complete(m->context);
-+
-+ return ret;
-+}
-+
-+/* This driver supports single master mode only. Hence
-+ * CMD_DONE is the only interrupt we care about
-+ */
-+static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id)
-+{
-+ struct spi_master *master = (struct spi_master *)dev_id;
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(master);
-+ u8 intr;
-+ u16 cmd;
-+
-+ /* Read interupts and clear them immediately */
-+ intr = bcm_spi_readb(bs, SPI_INT_STATUS);
-+ bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
-+ bcm_spi_writeb(bs, 0, SPI_INT_MASK);
-+
-+ /* A tansfer completed */
-+ if (intr & SPI_INTR_CMD_DONE) {
-+ u8 rx_tail;
-+
-+ rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
-+
-+ /* Read out all the data */
-+ if (rx_tail)
-+ memcpy_fromio(bs->rx_ptr, bs->rx_io, rx_tail);
-+
-+ /* See if there is more data to send */
-+ if (bs->remaining_bytes > 0) {
-+ bcm63xx_spi_fill_tx_fifo(bs);
-+
-+ /* Start the transfer */
-+ bcm_spi_writew(bs, SPI_HD_W << SPI_MSG_TYPE_SHIFT,
-+ SPI_MSG_CTL);
-+ cmd = bcm_spi_readw(bs, SPI_CMD);
-+ cmd |= SPI_CMD_START_IMMEDIATE;
-+ cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-+ bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK);
-+ bcm_spi_writew(bs, cmd, SPI_CMD);
-+ } else {
-+ complete(&bs->done);
-+ }
-+ }
-+
-+ return IRQ_HANDLED;
-+}
-+
-+
-+static int __init bcm63xx_spi_probe(struct platform_device *pdev)
-+{
-+ struct resource *r;
-+ struct device *dev = &pdev->dev;
-+ struct bcm63xx_spi_pdata *pdata = pdev->dev.platform_data;
-+ int irq;
-+ struct spi_master *master;
-+ struct clk *clk;
-+ struct bcm63xx_spi *bs;
-+ int ret;
-+
-+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!r) {
-+ dev_err(dev, "no iomem\n");
-+ ret = -ENXIO;
-+ goto out;
-+ }
-+
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq < 0) {
-+ dev_err(dev, "no irq\n");
-+ ret = -ENXIO;
-+ goto out;
-+ }
-+
-+ clk = clk_get(dev, "spi");
-+ if (IS_ERR(clk)) {
-+ dev_err(dev, "no clock for device\n");
-+ ret = -ENODEV;
-+ goto out;
-+ }
-+
-+ master = spi_alloc_master(dev, sizeof(*bs));
-+ if (!master) {
-+ dev_err(dev, "out of memory\n");
-+ ret = -ENOMEM;
-+ goto out_free;
-+ }
-+
-+ bs = spi_master_get_devdata(master);
-+ init_completion(&bs->done);
-+
-+ platform_set_drvdata(pdev, master);
-+ bs->pdev = pdev;
-+
-+ if (!request_mem_region(r->start, r->end - r->start, PFX)) {
-+ dev_err(dev, "iomem request failed\n");
-+ ret = -ENXIO;
-+ goto out_put_master;
-+ }
-+
-+ bs->regs = ioremap_nocache(r->start, r->end - r->start);
-+ if (!bs->regs) {
-+ dev_err(dev, "unable to ioremap regs\n");
-+ ret = -ENOMEM;
-+ goto out_put_master;
-+ }
-+ bs->irq = irq;
-+ bs->clk = clk;
-+ bs->fifo_size = pdata->fifo_size;
-+
-+ ret = request_irq(irq, bcm63xx_spi_interrupt, 0, pdev->name, master);
-+ if (ret) {
-+ dev_err(dev, "unable to request irq\n");
-+ goto out_unmap;
-+ }
-+
-+ master->bus_num = pdata->bus_num;
-+ master->num_chipselect = pdata->num_chipselect;
-+ master->setup = bcm63xx_spi_setup;
-+ master->transfer = bcm63xx_transfer;
-+ bs->speed_hz = pdata->speed_hz;
-+ bs->stopping = 0;
-+ bs->tx_io = (u8*)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA));
-+ bs->rx_io = (const u8*)(bs->regs + bcm63xx_spireg(SPI_RX_DATA));
-+ spin_lock_init(&bs->lock);
-+
-+ /* Initialize hardware */
-+ clk_enable(bs->clk);
-+ bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
-+
-+ /* register and we are done */
-+ ret = spi_register_master(master);
-+ if (ret) {
-+ dev_err(dev, "spi register failed\n");
-+ goto out_reset_hw;
-+ }
-+
-+ dev_info(dev, "at 0x%08x (irq %d, FIFOs size %d) v%s\n",
-+ r->start, irq, bs->fifo_size, DRV_VER);
-+
-+ return 0;
-+
-+out_reset_hw:
-+ clk_disable(clk);
-+ free_irq(irq, master);
-+out_unmap:
-+ iounmap(bs->regs);
-+out_put_master:
-+ spi_master_put(master);
-+out_free:
-+ clk_put(clk);
-+out:
-+ return ret;
-+}
-+
-+static int __exit bcm63xx_spi_remove(struct platform_device *pdev)
-+{
-+ struct spi_master *master = platform_get_drvdata(pdev);
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(master);
-+ struct resource *r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+
-+ /* reset spi block */
-+ bcm_spi_writeb(bs, 0, SPI_INT_MASK);
-+ spin_lock(&bs->lock);
-+ bs->stopping = 1;
-+
-+ /* HW shutdown */
-+ clk_disable(bs->clk);
-+ clk_put(bs->clk);
-+
-+ spin_unlock(&bs->lock);
-+
-+ free_irq(bs->irq, master);
-+ iounmap(bs->regs);
-+ release_mem_region(r->start, r->end - r->start);
-+ platform_set_drvdata(pdev, 0);
-+ spi_unregister_master(master);
-+
-+ return 0;
-+}
-+
-+#ifdef CONFIG_PM
-+static int bcm63xx_spi_suspend(struct platform_device *pdev, pm_message_t mesg)
-+{
-+ struct spi_master *master = platform_get_drvdata(pdev);
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(master);
-+
-+ clk_disable(bs->clk);
-+
-+ return 0;
-+}
-+
-+static int bcm63xx_spi_resume(struct platform_device *pdev)
-+{
-+ struct spi_master *master = platform_get_drvdata(pdev);
-+ struct bcm63xx_spi *bs = spi_master_get_devdata(master);
-+
-+ clk_enable(bs->clk);
-+
-+ return 0;
-+}
-+#else
-+#define bcm63xx_spi_suspend NULL
-+#define bcm63xx_spi_resume NULL
-+#endif
-+
-+static struct platform_driver bcm63xx_spi_driver = {
-+ .driver = {
-+ .name = "bcm63xx-spi",
-+ .owner = THIS_MODULE,
-+ },
-+ .probe = bcm63xx_spi_probe,
-+ .remove = __exit_p(bcm63xx_spi_remove),
-+ .suspend = bcm63xx_spi_suspend,
-+ .resume = bcm63xx_spi_resume,
-+};
-+
-+
-+static int __init bcm63xx_spi_init(void)
-+{
-+ return platform_driver_register(&bcm63xx_spi_driver);
-+}
-+
-+static void __exit bcm63xx_spi_exit(void)
-+{
-+ platform_driver_unregister(&bcm63xx_spi_driver);
-+}
-+
-+module_init(bcm63xx_spi_init);
-+module_exit(bcm63xx_spi_exit);
-+
-+MODULE_ALIAS("platform:bcm63xx_spi");
-+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
-+MODULE_AUTHOR("Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>");
-+MODULE_DESCRIPTION("Broadcom BCM63xx SPI Controller driver");
-+MODULE_LICENSE("GPL");
-+MODULE_VERSION(DRV_VER);
---- a/drivers/spi/Kconfig
-+++ b/drivers/spi/Kconfig
-@@ -74,6 +74,12 @@ config SPI_ATMEL
- This selects a driver for the Atmel SPI Controller, present on
- many AT32 (AVR32) and AT91 (ARM) chips.
-
-+config SPI_BCM63XX
-+ tristate "Broadcom BCM63xx SPI controller"
-+ depends on BCM63XX
-+ help
-+ This is the SPI controller master driver for Broadcom BCM63xx SoC.
-+
- config SPI_BFIN
- tristate "SPI controller driver for ADI Blackfin5xx"
- depends on BLACKFIN
---- a/drivers/spi/Makefile
-+++ b/drivers/spi/Makefile
-@@ -14,6 +14,7 @@ obj-$(CONFIG_SPI_ALTERA) += spi-altera.
- obj-$(CONFIG_SPI_ATMEL) += spi-atmel.o
- obj-$(CONFIG_SPI_ATH79) += spi-ath79.o
- obj-$(CONFIG_SPI_AU1550) += spi-au1550.o
-+obj-$(CONFIG_SPI_BCM63XX) += bcm63xx_spi.o
- obj-$(CONFIG_SPI_BFIN) += spi-bfin5xx.o
- obj-$(CONFIG_SPI_BFIN_SPORT) += spi-bfin-sport.o
- obj-$(CONFIG_SPI_BITBANG) += spi-bitbang.o
---- /dev/null
-+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
-@@ -0,0 +1,85 @@
-+#ifndef BCM63XX_DEV_SPI_H
-+#define BCM63XX_DEV_SPI_H
-+
-+#include <linux/types.h>
-+#include <bcm63xx_io.h>
-+#include <bcm63xx_regs.h>
-+
-+int __init bcm63xx_spi_register(void);
-+
-+struct bcm63xx_spi_pdata {
-+ unsigned int fifo_size;
-+ int bus_num;
-+ int num_chipselect;
-+ u32 speed_hz;
-+};
-+
-+enum bcm63xx_regs_spi {
-+ SPI_CMD,
-+ SPI_INT_STATUS,
-+ SPI_INT_MASK_ST,
-+ SPI_INT_MASK,
-+ SPI_ST,
-+ SPI_CLK_CFG,
-+ SPI_FILL_BYTE,
-+ SPI_MSG_TAIL,
-+ SPI_RX_TAIL,
-+ SPI_MSG_CTL,
-+ SPI_MSG_DATA,
-+ SPI_RX_DATA,
-+};
-+
-+#define __GEN_SPI_RSET_BASE(__cpu, __rset) \
-+ case SPI_## __rset: \
-+ return SPI_BCM_## __cpu ##_SPI_## __rset;
-+
-+#define __GEN_SPI_RSET(__cpu) \
-+ switch (reg) { \
-+ __GEN_SPI_RSET_BASE(__cpu, CMD) \
-+ __GEN_SPI_RSET_BASE(__cpu, INT_STATUS) \
-+ __GEN_SPI_RSET_BASE(__cpu, INT_MASK_ST) \
-+ __GEN_SPI_RSET_BASE(__cpu, INT_MASK) \
-+ __GEN_SPI_RSET_BASE(__cpu, ST) \
-+ __GEN_SPI_RSET_BASE(__cpu, CLK_CFG) \
-+ __GEN_SPI_RSET_BASE(__cpu, FILL_BYTE) \
-+ __GEN_SPI_RSET_BASE(__cpu, MSG_TAIL) \
-+ __GEN_SPI_RSET_BASE(__cpu, RX_TAIL) \
-+ __GEN_SPI_RSET_BASE(__cpu, MSG_CTL) \
-+ __GEN_SPI_RSET_BASE(__cpu, MSG_DATA) \
-+ __GEN_SPI_RSET_BASE(__cpu, RX_DATA) \
-+ }
-+
-+#define __GEN_SPI_REGS_TABLE(__cpu) \
-+ [SPI_CMD] = SPI_BCM_## __cpu ##_SPI_CMD, \
-+ [SPI_INT_STATUS] = SPI_BCM_## __cpu ##_SPI_INT_STATUS, \
-+ [SPI_INT_MASK_ST] = SPI_BCM_## __cpu ##_SPI_INT_MASK_ST, \
-+ [SPI_INT_MASK] = SPI_BCM_## __cpu ##_SPI_INT_MASK, \
-+ [SPI_ST] = SPI_BCM_## __cpu ##_SPI_ST, \
-+ [SPI_CLK_CFG] = SPI_BCM_## __cpu ##_SPI_CLK_CFG, \
-+ [SPI_FILL_BYTE] = SPI_BCM_## __cpu ##_SPI_FILL_BYTE, \
-+ [SPI_MSG_TAIL] = SPI_BCM_## __cpu ##_SPI_MSG_TAIL, \
-+ [SPI_RX_TAIL] = SPI_BCM_## __cpu ##_SPI_RX_TAIL, \
-+ [SPI_MSG_CTL] = SPI_BCM_## __cpu ##_SPI_MSG_CTL, \
-+ [SPI_MSG_DATA] = SPI_BCM_## __cpu ##_SPI_MSG_DATA, \
-+ [SPI_RX_DATA] = SPI_BCM_## __cpu ##_SPI_RX_DATA,
-+
-+static inline unsigned long bcm63xx_spireg(enum bcm63xx_regs_spi reg)
-+{
-+#ifdef BCMCPU_RUNTIME_DETECT
-+ extern const unsigned long *bcm63xx_regs_spi;
-+ return bcm63xx_regs_spi[reg];
-+#else
-+#ifdef CONFIG_BCM63XX_CPU_6338
-+ __GEN_SPI_RSET(6338)
-+#endif
-+#ifdef CONFIG_BCM63XX_CPU_6348
-+ __GEN_SPI_RSET(6348)
-+#endif
-+#ifdef CONFIG_BCM63XX_CPU_6358
-+ __GEN_SPI_RSET(6358)
-+#endif
-+#endif
-+ return 0;
-+}
-+
-+#endif /* BCM63XX_DEV_SPI_H */
---- a/arch/mips/bcm63xx/Makefile
-+++ b/arch/mips/bcm63xx/Makefile
-@@ -1,6 +1,6 @@
- obj-y += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
- dev-dsp.o dev-enet.o dev-pcmcia.o dev-uart.o dev-wdt.o \
-- dev-usb-ohci.o dev-usb-ehci.o dev-usb-udc.o
-+ dev-usb-ohci.o dev-usb-ehci.o dev-usb-udc.o dev-spi.o
- obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-
- obj-y += boards/
---- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
-+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
-@@ -30,6 +30,7 @@
- #include <bcm63xx_dev_usb_ohci.h>
- #include <bcm63xx_dev_usb_ehci.h>
- #include <bcm63xx_dev_usb_udc.h>
-+#include <bcm63xx_dev_spi.h>
- #include <board_bcm963xx.h>
-
- #define PFX "board_bcm963xx: "
-@@ -933,6 +934,8 @@ int __init board_register_devices(void)
- if (board.num_spis)
- spi_register_board_info(board.spis, board.num_spis);
-
-+ bcm63xx_spi_register();
-+
- /* read base address of boot chip select (0) */
- val = bcm_mpi_readl(MPI_CSBASE_REG(0));
- val &= MPI_CSBASE_BASE_MASK;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 06:22:49 +0000