[IRQ_DSL] = BCM_6358_DSL_IRQ,
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-spi.c
-@@ -0,0 +1,127 @@
+@@ -0,0 +1,128 @@
+/*
+ * 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 Florian Fainelli <florian@openwrt.org>
++ * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
+ */
+
+#include <linux/init.h>
#endif /* BCM63XX_REGS_H_ */
--- /dev/null
+++ b/drivers/spi/bcm63xx_spi.c
-@@ -0,0 +1,479 @@
+@@ -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
+
+struct bcm63xx_spi {
+ spinlock_t lock;
-+ int stopping;
++ int stopping;
+ struct completion done;
+
-+ void __iomem *regs;
-+ int irq;
++ void __iomem *regs;
++ int irq;
+
+ /* Platform data */
+ u32 speed_hz;
+ /* 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)
++ struct spi_transfer *t)
+{
+ u8 bits_per_word;
+ u8 clk_cfg;
+ case 32:
+ clk_cfg = SPI_CLK_1_563MHZ;
+ break;
-+ case 128:
++ case 64:
+ clk_cfg = SPI_CLK_0_781MHZ;
+ break;
-+ case 64:
++ case 128:
+ default:
+ /* Set to slowest mode for compatibility */
-+ clk_cfg = SPI_CLK_0_781MHZ;
++ clk_cfg = SPI_CLK_0_391MHZ;
+ break;
+ }
+
-+ bcm_spi_writeb(clk_cfg, SPI_CLK_CFG);
++ 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);
+
+static int bcm63xx_spi_setup(struct spi_device *spi)
+{
+ struct bcm63xx_spi *bs;
-+ int retval;
++ int ret;
+
+ bs = spi_master_get_devdata(spi->master);
+
+ return -EINVAL;
+ }
+
-+ retval = bcm63xx_spi_setup_transfer(spi, NULL);
-+ if (retval < 0) {
++ ret = bcm63xx_spi_setup_transfer(spi, NULL);
++ if (ret < 0) {
+ dev_err(&spi->dev, "setup: unsupported mode bits %x\n",
+ spi->mode & ~MODEBITS);
-+ return retval;
++ return ret;
+ }
+
+ dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec/bit\n",
+/* Fill the TX FIFO with as many bytes as possible */
+static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs)
+{
-+ u8 tail;
++ u8 size;
+
+ /* Fill the Tx FIFO with as many bytes as possible */
-+ tail = bcm_spi_readb(SPI_MSG_TAIL);
-+
-+ while ((tail < bs->fifo_size) && (bs->remaining_bytes > 0)) {
-+ if (bs->tx_ptr)
-+ bcm_spi_writeb(*bs->tx_ptr++, SPI_MSG_DATA);
-+ else
-+ bcm_spi_writeb(0, SPI_MSG_DATA);
-+
-+ bs->remaining_bytes--;
-+ tail = bcm_spi_readb(SPI_MSG_TAIL);
-+ }
++ 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)
+
+ /* Enable the command done interrupt which
+ * we use to determine completion of a command */
-+ bcm_spi_writeb(SPI_INTR_CMD_DONE, SPI_INT_MASK);
++ 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);
+ else if (t->tx_buf)
+ msg_ctl |= (SPI_HD_W << SPI_MSG_TYPE_SHIFT);
+
-+ bcm_spi_writew(msg_ctl, SPI_MSG_CTL);
++ 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);
-+ bcm_spi_writew(cmd, SPI_CMD);
++ 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(0, SPI_INT_MASK);
++ 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 *msg)
++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 *xfer;
++ struct spi_transfer *t;
+ int ret = 0;
+
-+ if (unlikely(list_empty(&msg->transfers)))
++ if (unlikely(list_empty(&m->transfers)))
+ return -EINVAL;
+
+ if (bs->stopping)
+ return -ESHUTDOWN;
+
-+ list_for_each_entry(xfer, &msg->transfers, transfer_list) {
-+ ret += bcm63xx_txrx_bufs(spi, xfer);
++ list_for_each_entry(t, &m->transfers, transfer_list) {
++ ret += bcm63xx_txrx_bufs(spi, t);
+ }
+
-+ msg->complete(msg->context);
++ m->complete(m->context);
+
+ return ret;
+}
+ u16 cmd;
+
+ /* Read interupts and clear them immediately */
-+ intr = bcm_spi_readb(SPI_INT_STATUS);
-+ bcm_spi_writeb(SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
-+ bcm_spi_writeb(0, SPI_INT_MASK);
++ 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(SPI_RX_TAIL);
++ rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
+
+ /* Read out all the data */
-+ if (rx_tail) {
-+ u8 data;
-+ u8 i = 0;
-+
-+ for(i = 0; i < rx_tail; i++) {
-+ data = bcm_spi_readb(SPI_RX_DATA);
-+ if (bs->rx_ptr)
-+ *bs->rx_ptr++ = 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(SPI_HD_W << SPI_MSG_TYPE_SHIFT,
++ bcm_spi_writew(bs, SPI_HD_W << SPI_MSG_TYPE_SHIFT,
+ SPI_MSG_CTL);
-+ cmd = bcm_spi_readw(SPI_CMD);
++ cmd = bcm_spi_readw(bs, SPI_CMD);
+ cmd |= SPI_CMD_START_IMMEDIATE;
+ cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-+ bcm_spi_writeb(SPI_INTR_CMD_DONE, SPI_INT_MASK);
-+ bcm_spi_writew(cmd, SPI_CMD);
++ bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK);
++ bcm_spi_writew(bs, cmd, SPI_CMD);
+ } else {
+ complete(&bs->done);
+ }
+ goto out;
+ }
+
-+ clk = clk_get(&pdev->dev, "spi");
++ 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(&pdev->dev, sizeof(struct bcm63xx_spi));
++ master = spi_alloc_master(dev, sizeof(*bs));
+ if (!master) {
+ dev_err(dev, "out of memory\n");
+ ret = -ENOMEM;
+ init_completion(&bs->done);
+
+ platform_set_drvdata(pdev, master);
-+ bs->pdev = pdev;
++ bs->pdev = pdev;
+
-+ if (!request_mem_region(r->start,
-+ r->end - r->start, PFX)) {
++ 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);
++ bs->regs = ioremap_nocache(r->start, r->end - r->start);
+ if (!bs->regs) {
+ dev_err(dev, "unable to ioremap regs\n");
+ ret = -ENOMEM;
+ bs->clk = clk;
+ bs->fifo_size = pdata->fifo_size;
+
-+ ret = request_irq(irq, bcm63xx_spi_interrupt, 0,
-+ pdev->name, master);
++ 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->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(SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
++ bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
+
+ /* register and we are done */
+ ret = spi_register_master(master);
+ dev_info(dev, "at 0x%08x (irq %d, FIFOs size %d) v%s\n",
+ r->start, irq, bs->fifo_size, DRV_VER);
+
-+ return ret;
++ return 0;
+
+out_reset_hw:
+ clk_disable(clk);
+
+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);
++ 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(0, SPI_INT_MASK);
++ bcm_spi_writeb(bs, 0, SPI_INT_MASK);
+ spin_lock(&bs->lock);
+ bs->stopping = 1;
+
+ .owner = THIS_MODULE,
+ },
+ .probe = bcm63xx_spi_probe,
-+ .remove = bcm63xx_spi_remove,
++ .remove = __exit_p(bcm63xx_spi_remove),
+ .suspend = bcm63xx_spi_suspend,
+ .resume = bcm63xx_spi_resume,
+};
+
+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);
spi_s3c24xx_hw-y := spi_s3c24xx.o
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
-@@ -0,0 +1,136 @@
+@@ -0,0 +1,126 @@
+#ifndef BCM63XX_DEV_SPI_H
+#define BCM63XX_DEV_SPI_H
+
+ return 0;
+}
+
-+/*
-+ * helpers for the SPI register sets
-+ */
-+#define bcm_spi_readb(o) bcm_rset_readb(RSET_SPI, bcm63xx_spireg(o))
-+#define bcm_spi_readw(o) bcm_rset_readw(RSET_SPI, bcm63xx_spireg(o))
-+#define bcm_spi_readl(o) bcm_rset_readl(RSET_SPI, bcm63xx_spireg(o))
-+#define bcm_spi_writeb(v,o) bcm_rset_writeb(RSET_SPI, (v), bcm63xx_spireg(o))
-+#define bcm_spi_writew(v,o) bcm_rset_writew(RSET_SPI, (v), bcm63xx_spireg(o))
-+#define bcm_spi_writel(v,o) bcm_rset_writel(RSET_SPI, (v), bcm63xx_spireg(o))
-+
+#endif /* BCM63XX_DEV_SPI_H */
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
#include <board_bcm963xx.h>
#define PFX "board_bcm963xx: "
-@@ -1586,6 +1587,9 @@ int __init board_register_devices(void)
+@@ -1587,6 +1588,9 @@ int __init board_register_devices(void)
if (board.num_spis)
spi_register_board_info(board.spis, board.num_spis);
projects / openwrt.git / blobdiff