Thread (40 messages) 40 messages, 6 authors, 2019-08-15

Re: [PATCH 07/14] net: lpc-enet: move phy setup into platform code

From: Sylvain Lemieux <hidden>
Date: 2019-08-06 20:11:54
Also in: linux-arm-kernel, linux-gpio, linux-serial, linux-usb, linux-watchdog, lkml

On Wed, Jul 31, 2019 at 4:01 PM Arnd Bergmann [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Setting the phy mode requires touching a platform specific
register, which prevents us from building the driver without
its header files.

Move it into a separate function in arch/arm/mach/lpc32xx
to hide the core registers from the network driver.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mach-lpc32xx/common.c       | 12 ++++++++++++
 drivers/net/ethernet/nxp/lpc_eth.c   | 12 +-----------
 include/linux/soc/nxp/lpc32xx-misc.h |  5 +++++
 3 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c
index f648324d5fb4..a475339333c1 100644
--- a/arch/arm/mach-lpc32xx/common.c
+++ b/arch/arm/mach-lpc32xx/common.c
@@ -63,6 +63,18 @@ u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaaddr)
 }
 EXPORT_SYMBOL_GPL(lpc32xx_return_iram);

+void lpc32xx_set_phy_interface_mode(phy_interface_t mode)
+{
+       u32 tmp = __raw_readl(LPC32XX_CLKPWR_MACCLK_CTRL);
+       tmp &= ~LPC32XX_CLKPWR_MACCTRL_PINS_MSK;
+       if (mode == PHY_INTERFACE_MODE_MII)
+               tmp |= LPC32XX_CLKPWR_MACCTRL_USE_MII_PINS;
+       else
+               tmp |= LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS;
+       __raw_writel(tmp, LPC32XX_CLKPWR_MACCLK_CTRL);
+}
+EXPORT_SYMBOL_GPL(lpc32xx_set_phy_interface_mode);
+
 static struct map_desc lpc32xx_io_desc[] __initdata = {
        {
                .virtual        = (unsigned long)IO_ADDRESS(LPC32XX_AHB0_START),
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index bcdd0adcfb0c..0893b77c385d 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -20,9 +20,6 @@
 #include <linux/spinlock.h>
 #include <linux/soc/nxp/lpc32xx-misc.h>

-#include <mach/hardware.h>
-#include <mach/platform.h>
-
 #define MODNAME "lpc-eth"
 #define DRV_VERSION "1.00"
@@ -1237,16 +1234,9 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
        dma_addr_t dma_handle;
        struct resource *res;
        int irq, ret;
-       u32 tmp;

        /* Setup network interface for RMII or MII mode */
-       tmp = __raw_readl(LPC32XX_CLKPWR_MACCLK_CTRL);
-       tmp &= ~LPC32XX_CLKPWR_MACCTRL_PINS_MSK;
-       if (lpc_phy_interface_mode(dev) == PHY_INTERFACE_MODE_MII)
-               tmp |= LPC32XX_CLKPWR_MACCTRL_USE_MII_PINS;
-       else
-               tmp |= LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS;
-       __raw_writel(tmp, LPC32XX_CLKPWR_MACCLK_CTRL);
+       lpc32xx_set_phy_interface_mode(lpc_phy_interface_mode(dev));

        /* Get platform resources */
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
diff --git a/include/linux/soc/nxp/lpc32xx-misc.h b/include/linux/soc/nxp/lpc32xx-misc.h
index f232e1a1bcdc..af4f82f6cf3b 100644
--- a/include/linux/soc/nxp/lpc32xx-misc.h
+++ b/include/linux/soc/nxp/lpc32xx-misc.h
@@ -9,9 +9,11 @@
 #define __SOC_LPC32XX_MISC_H

 #include <linux/types.h>
+#include <linux/phy.h>

 #ifdef CONFIG_ARCH_LPC32XX
 extern u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaaddr);
+extern void lpc32xx_set_phy_interface_mode(phy_interface_t mode);
 #else
 static inline u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaaddr)
 {
@@ -19,6 +21,9 @@ static inline u32 lpc32xx_return_iram(void __iomem **mapbase, dma_addr_t *dmaadd
        *dmaaddr = 0;
        return 0;
 }
+static inline void lpc32xx_set_phy_interface_mode(phy_interface_t mode)
+{
+}
 #endif

 #endif  /* __SOC_LPC32XX_MISC_H */
--
2.20.0
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