X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/ac74991e5e88789fe6d66bf3194525cd77ddaa4e..43cf9049e3f18a2e3632a7951a357f420a64d392:/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c

diff --git a/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c b/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c
index 449b1d5ad..a20de302d 100644
--- a/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c
+++ b/target/linux/brcm63xx/files/drivers/spi/bcm63xx_spi.c
@@ -36,7 +36,7 @@
 #include <bcm63xx_dev_spi.h>
 
 #define PFX 		KBUILD_MODNAME
-#define DRV_VER		"0.1.0"
+#define DRV_VER		"0.1.2"
 
 struct bcm63xx_spi {
 	/* bitbang has to be first */
@@ -48,8 +48,7 @@ struct bcm63xx_spi {
 
 	/* Platform data */
         u32			speed_hz;
-	unsigned		msg_fifo_size;
-	unsigned		rx_fifo_size;
+	unsigned		fifo_size;
 
 	/* Data buffers */
 	const unsigned char	*tx_ptr;
@@ -63,14 +62,16 @@ struct bcm63xx_spi {
 
 static void bcm63xx_spi_chipselect(struct spi_device *spi, int is_on)
 {
+	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
 	u16 val;
 
-	val = bcm_spi_readw(SPI_CMD);
+	val = bcm_spi_readw(bs->regs, SPI_CMD);
 	if (is_on == BITBANG_CS_INACTIVE)
 		val |= SPI_CMD_NOOP;
 	else if (is_on == BITBANG_CS_ACTIVE)
 		val |= (1 << spi->chip_select << SPI_CMD_DEVICE_ID_SHIFT);
-	bcm_spi_writew(val, SPI_CMD);
+		
+	bcm_spi_writew(val, bs->regs, SPI_CMD);
 }
 
 static int bcm63xx_spi_setup_transfer(struct spi_device *spi,
@@ -125,7 +126,7 @@ static int bcm63xx_spi_setup_transfer(struct spi_device *spi,
 		break;
 	}
 
-	bcm_spi_writeb(clk_cfg, SPI_CLK_CFG);
+	bcm_spi_writeb(clk_cfg, bs->regs, SPI_CLK_CFG);
 	dev_dbg(&spi->dev, "Setting clock register to %d (hz %d, cmd %02x)\n",
 								div, hz, clk_cfg);
 	
@@ -172,14 +173,14 @@ static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs)
         u8 tail;
 
         /* Fill the Tx FIFO with as many bytes as possible */
-	tail = bcm_spi_readb(SPI_MSG_TAIL);
-        while ((tail < bs->msg_fifo_size) && (bs->remaining_bytes > 0)) {
+	tail = bcm_spi_readb(bs->regs, 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);
+                        bcm_spi_writeb(*bs->tx_ptr++, bs->regs, SPI_MSG_DATA);
 		else
-			bcm_spi_writeb(0, SPI_MSG_DATA); 
+			bcm_spi_writeb(0, bs->regs, SPI_MSG_DATA); 
                 bs->remaining_bytes--;
-		tail = bcm_spi_readb(SPI_MSG_TAIL);
+		tail = bcm_spi_readb(bs->regs, SPI_MSG_TAIL);
         }
 }
 
@@ -202,24 +203,24 @@ 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_writeb(SPI_INTR_CMD_DONE, SPI_INT_MASK);
+	bcm_spi_writeb(SPI_INTR_CMD_DONE, bs->regs, SPI_INT_MASK);
 	
 	/* Fill in the Message control register */
-	msg_ctl = bcm_spi_readb(SPI_MSG_CTL);
+	msg_ctl = bcm_spi_readb(bs->regs, SPI_MSG_CTL);
 	msg_ctl |= (t->len << SPI_BYTE_CNT_SHIFT);
-	msg_ctl |= (SPI_HD_R << SPI_MSG_TYPE_SHIFT);
-	bcm_spi_writeb(msg_ctl, SPI_MSG_CTL);
+	msg_ctl |= (SPI_FD_RW << SPI_MSG_TYPE_SHIFT);
+	bcm_spi_writeb(msg_ctl, bs->regs, SPI_MSG_CTL);
 	
 	/* Issue the transfer */
-	cmd = bcm_spi_readb(SPI_CMD);
+	cmd = bcm_spi_readb(bs->regs, SPI_CMD);
 	cmd |= SPI_CMD_START_IMMEDIATE;
 	cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-	bcm_spi_writeb(cmd, SPI_CMD);
+	bcm_spi_writeb(cmd, bs->regs, SPI_CMD);
 
 	wait_for_completion(&bs->done);	
 
 	/* Disable the CMD_DONE interrupt */
-	bcm_spi_writeb(~(SPI_INTR_CMD_DONE), SPI_INT_MASK);
+	bcm_spi_writeb(~(SPI_INTR_CMD_DONE), bs->regs, SPI_INT_MASK);
 
 	return t->len - bs->remaining_bytes;
 }
@@ -235,23 +236,23 @@ static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id)
 	u16 cmd;
 
 	/* Read interupts and clear them immediately */
-	intr = bcm_spi_readb(SPI_INT_STATUS);
-	bcm_writeb(SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
+	intr = bcm_spi_readb(bs->regs, SPI_INT_STATUS);
+	bcm_spi_writeb(SPI_INTR_CLEAR_ALL, bs->regs, SPI_INT_MASK);
 
 	/* A tansfer completed */
 	if (intr & SPI_INTR_CMD_DONE) {
 		u8 rx_empty;
 	
-		rx_empty = bcm_spi_readb(SPI_ST);
+		rx_empty = bcm_spi_readb(bs->regs, SPI_ST);
 		/* Read out all the data */
 		while ((rx_empty & SPI_RX_EMPTY) == 0) {
 			u8 data;
 		
-			data = bcm_spi_readb(SPI_RX_DATA);
+			data = bcm_spi_readb(bs->regs, SPI_RX_DATA);
 			if (bs->rx_ptr)
 				*bs->rx_ptr++ = data;
 
-			rx_empty = bcm_spi_readb(SPI_RX_EMPTY);
+			rx_empty = bcm_spi_readb(bs->regs, SPI_RX_EMPTY);
 		}
 
 		/* See if there is more data to send */
@@ -259,10 +260,10 @@ static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id)
 			bcm63xx_spi_fill_tx_fifo(bs);
 
 			/* Start the transfer */
-			cmd = bcm_spi_readb(SPI_CMD);
+			cmd = bcm_spi_readb(bs->regs, SPI_CMD);
 			cmd |= SPI_CMD_START_IMMEDIATE;
 			cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
-			bcm_spi_writeb(cmd, SPI_CMD);
+			bcm_spi_writeb(cmd, bs->regs, SPI_CMD);
 		} else
 			complete(&bs->done);
 	}
@@ -317,6 +318,12 @@ static int __init bcm63xx_spi_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, master);
         bs->pdev = pdev;
 
+	if (!request_mem_region(r->start,
+			r->end - r->start, PFX)) {
+		ret = -ENXIO;
+		goto out_free;
+	}
+
         bs->regs = ioremap_nocache(r->start, r->end - r->start);
 	if (!bs->regs) {
 		printk(KERN_ERR PFX " unable to ioremap regs\n");
@@ -325,11 +332,10 @@ static int __init bcm63xx_spi_probe(struct platform_device *pdev)
 	}
 	bs->irq = irq;
 	bs->clk = clk;
-	bs->msg_fifo_size = pdata->msg_fifo_size;
-	bs->rx_fifo_size = pdata->rx_fifo_size;
+	bs->fifo_size = pdata->fifo_size;
 
 	ret = request_irq(irq, bcm63xx_spi_interrupt, 0,
-				pdev->dev.bus_id, master);
+				pdev->name, master);
 	if (ret) {
 		printk(KERN_ERR PFX " unable to request irq\n");
 		goto out_unmap;
@@ -341,11 +347,10 @@ static int __init bcm63xx_spi_probe(struct platform_device *pdev)
 	
 	/* Initialize hardware */
 	clk_enable(bs->clk);
-	bcm_spi_writew(SPI_CMD_HARD_RESET, SPI_CMD);
-	bcm_spi_writeb(SPI_INTR_CLEAR_ALL, SPI_INT_MASK);
+	bcm_spi_writeb(SPI_INTR_CLEAR_ALL, bs->regs, SPI_INT_MASK);
 	
-	dev_info(&pdev->dev, PFX " at 0x%08x (irq %d) %s\n",
-				r->start, irq, DRV_VER);
+	dev_info(&pdev->dev, " at 0x%08x (irq %d, FIFOs size %d) v%s\n",
+				r->start, irq, bs->fifo_size, DRV_VER);
 
 	ret = spi_bitbang_start(&bs->bitbang);
 	if (ret) {
@@ -437,3 +442,4 @@ MODULE_ALIAS("platform:bcm63xx_spi");
 MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
 MODULE_DESCRIPTION("Broadcom BCM63xx SPI Controller driver");
 MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VER);