Commit 0cc8674f authored by Andrew Victor's avatar Andrew Victor Committed by Jeff Garzik
Browse files

AT91: MACB support 



The Atmel MACB Ethernet peripheral is also integrated in the AT91SAM9260
and AT91SAM9263 processors.  The differences from the AVR32 version are:
      * Single peripheral clock.
      * MII/RMII selection bit is inverted.
      * Clock enable bit.

Original patch from Patrice Vilchez.

Signed-off-by: default avatarAndrew Victor <andrew@sanpeople.com>
Signed-off-by: default avatarHaavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 683349a3

drivers/net/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -190,7 +190,7 @@ config MII 


config MACB

	tristate "Atmel MACB support"

	depends on NET_ETHERNET && AVR32

	depends on NET_ETHERNET && (AVR32 || ARCH_AT91SAM9260 || ARCH_AT91SAM9263)

	select MII

	help

	  The Atmel MACB ethernet interface is found on many AT32 and AT91

drivers/net/macb.c

+23 −2
Original line number Diff line number Diff line
@@ -1046,6 +1046,14 @@ static int __devinit macb_probe(struct platform_device *pdev) 


	spin_lock_init(&bp->lock);



#if defined(CONFIG_ARCH_AT91)

	bp->pclk = clk_get(&pdev->dev, "macb_clk");

	if (IS_ERR(bp->pclk)) {

		dev_err(&pdev->dev, "failed to get macb_clk\n");

		goto err_out_free_dev;

	}

	clk_enable(bp->pclk);

#else

	bp->pclk = clk_get(&pdev->dev, "pclk");

	if (IS_ERR(bp->pclk)) {

		dev_err(&pdev->dev, "failed to get pclk\n");
@@ -1059,6 +1067,7 @@ static int __devinit macb_probe(struct platform_device *pdev) 


	clk_enable(bp->pclk);

	clk_enable(bp->hclk);

#endif



	bp->regs = ioremap(regs->start, regs->end - regs->start + 1);

	if (!bp->regs) {
@@ -1119,9 +1128,17 @@ static int __devinit macb_probe(struct platform_device *pdev) 


	pdata = pdev->dev.platform_data;

	if (pdata && pdata->is_rmii)

#if defined(CONFIG_ARCH_AT91)

		macb_writel(bp, USRIO, (MACB_BIT(RMII) | MACB_BIT(CLKEN)) );

#else

		macb_writel(bp, USRIO, 0);

#endif

	else

#if defined(CONFIG_ARCH_AT91)

		macb_writel(bp, USRIO, MACB_BIT(CLKEN));

#else

		macb_writel(bp, USRIO, MACB_BIT(MII));

#endif



	bp->tx_pending = DEF_TX_RING_PENDING;
@@ -1148,9 +1165,11 @@ err_out_free_irq: 
err_out_iounmap:

	iounmap(bp->regs);

err_out_disable_clocks:

#ifndef CONFIG_ARCH_AT91

	clk_disable(bp->hclk);

	clk_disable(bp->pclk);

	clk_put(bp->hclk);

#endif

	clk_disable(bp->pclk);

err_out_put_pclk:

	clk_put(bp->pclk);

err_out_free_dev:
@@ -1173,9 +1192,11 @@ static int __devexit macb_remove(struct platform_device *pdev) 
		unregister_netdev(dev);

		free_irq(dev->irq, dev);

		iounmap(bp->regs);

#ifndef CONFIG_ARCH_AT91

		clk_disable(bp->hclk);

		clk_disable(bp->pclk);

		clk_put(bp->hclk);

#endif

		clk_disable(bp->pclk);

		clk_put(bp->pclk);

		free_netdev(dev);

		platform_set_drvdata(pdev, NULL);

drivers/net/macb.h

+7 −1
Original line number Diff line number Diff line
@@ -200,7 +200,7 @@ 
#define MACB_SOF_OFFSET				30

#define MACB_SOF_SIZE				2



/* Bitfields in USRIO */

/* Bitfields in USRIO (AVR32) */

#define MACB_MII_OFFSET				0

#define MACB_MII_SIZE				1

#define MACB_EAM_OFFSET				1
@@ -210,6 +210,12 @@ 
#define MACB_TX_PAUSE_ZERO_OFFSET		3

#define MACB_TX_PAUSE_ZERO_SIZE			1



/* Bitfields in USRIO (AT91) */

#define MACB_RMII_OFFSET			0

#define MACB_RMII_SIZE				1

#define MACB_CLKEN_OFFSET			1

#define MACB_CLKEN_SIZE				1



/* Bitfields in WOL */

#define MACB_IP_OFFSET				0

#define MACB_IP_SIZE				16

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