ARM: OMAP AM35x: EMAC/MDIO integration: Add Davinci EMAC/MDIO hwmod support

Add hwmod support for the EMAC (and MDIO)
ethernet controller that's on the am35x
family of SoC's.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
[paul@pwsan.com: updated subject line; updated to apply on v3.5-rc4;
 added comments to hwmod data regarding IPSS]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 46 insertions, 44 deletions

diff --git a/arch/arm/mach-omap2/am35xx-emac.c b/arch/arm/mach-omap2/am35xx-emac.c
index 447682c4e11c..2c90ac686686 100644
--- a/arch/arm/mach-omap2/am35xx-emac.c
+++ b/arch/arm/mach-omap2/am35xx-emac.c
@@ -15,27 +15,13 @@
  * General Public License for more details.
  */
 
-#include <linux/clk.h>
+#include <linux/err.h>
 #include <linux/davinci_emac.h>
-#include <linux/platform_device.h>
-#include <plat/irqs.h>
+#include <asm/system.h>
+#include <plat/omap_device.h>
 #include <mach/am35xx.h>
-
 #include "control.h"
-
-static struct mdio_platform_data am35xx_emac_mdio_pdata;
-
-static struct resource am35xx_emac_mdio_resources[] = {
-        DEFINE_RES_MEM(AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET, SZ_4K),
-};
-
-static struct platform_device am35xx_emac_mdio_device = {
-        .name           = "davinci_mdio",
-        .id             = 0,
-        .num_resources  = ARRAY_SIZE(am35xx_emac_mdio_resources),
-        .resource       = am35xx_emac_mdio_resources,
-        .dev.platform_data = &am35xx_emac_mdio_pdata,
-};
+#include "am35xx-emac.h"
 
 static void am35xx_enable_emac_int(void)
 {
@@ -69,41 +55,57 @@ static struct emac_platform_data am35xx_emac_pdata = {
         .interrupt_disable      = am35xx_disable_emac_int,
 };
 
-static struct resource am35xx_emac_resources[] = {
-        DEFINE_RES_MEM(AM35XX_IPSS_EMAC_BASE, 0x30000),
-        DEFINE_RES_IRQ(INT_35XX_EMAC_C0_RXTHRESH_IRQ),
-        DEFINE_RES_IRQ(INT_35XX_EMAC_C0_RX_PULSE_IRQ),
-        DEFINE_RES_IRQ(INT_35XX_EMAC_C0_TX_PULSE_IRQ),
-        DEFINE_RES_IRQ(INT_35XX_EMAC_C0_MISC_PULSE_IRQ),
-};
+static struct mdio_platform_data am35xx_mdio_pdata;
 
-static struct platform_device am35xx_emac_device = {
-        .name           = "davinci_emac",
-        .id             = -1,
-        .num_resources  = ARRAY_SIZE(am35xx_emac_resources),
-        .resource       = am35xx_emac_resources,
-        .dev            = {
-                .platform_data  = &am35xx_emac_pdata,
-        },
-};
+static int __init omap_davinci_emac_dev_init(struct omap_hwmod *oh,
+                void *pdata, int pdata_len)
+{
+        struct platform_device *pdev;
+
+        pdev = omap_device_build(oh->class->name, 0, oh, pdata, pdata_len,
+                                 NULL, 0, false);
+        if (IS_ERR(pdev)) {
+                WARN(1, "Can't build omap_device for %s:%s.\n",
+                     oh->class->name, oh->name);
+                return PTR_ERR(pdev);
+        }
+
+        return 0;
+}
 
 void __init am35xx_emac_init(unsigned long mdio_bus_freq, u8 rmii_en)
 {
+        struct omap_hwmod *oh;
         u32 v;
-        int err;
+        int ret;
 
-        am35xx_emac_pdata.rmii_en = rmii_en;
-        am35xx_emac_mdio_pdata.bus_freq = mdio_bus_freq;
-        err = platform_device_register(&am35xx_emac_device);
-        if (err) {
-                pr_err("AM35x: failed registering EMAC device: %d\n", err);
+        oh = omap_hwmod_lookup("davinci_mdio");
+        if (!oh) {
+                pr_err("Could not find davinci_mdio hwmod\n");
+                return;
+        }
+
+        am35xx_mdio_pdata.bus_freq = mdio_bus_freq;
+
+        ret = omap_davinci_emac_dev_init(oh, &am35xx_mdio_pdata,
+                                         sizeof(am35xx_mdio_pdata));
+        if (ret) {
+                pr_err("Could not build davinci_mdio hwmod device\n");
                 return;
         }
 
-        err = platform_device_register(&am35xx_emac_mdio_device);
-        if (err) {
-                pr_err("AM35x: failed registering EMAC MDIO device: %d\n", err);
-                platform_device_unregister(&am35xx_emac_device);
+        oh = omap_hwmod_lookup("davinci_emac");
+        if (!oh) {
+                pr_err("Could not find davinci_emac hwmod\n");
+                return;
+        }
+
+        am35xx_emac_pdata.rmii_en = rmii_en;
+
+        ret = omap_davinci_emac_dev_init(oh, &am35xx_emac_pdata,
+                                         sizeof(am35xx_emac_pdata));
+        if (ret) {
+                pr_err("Could not build davinci_emac hwmod device\n");
                 return;
         }