ARM: OMAP2+: HDQ1W: use omap_device

Convert the old-style device registration code for HDQ1W to use
omap_device.  This will allow the driver to be converted to use PM
runtime and to take advantage of the OMAP IP block management
infrastructure (hwmod, PM, etc.).

A side benefit of this conversion is that it also makes the HDQ device
available on OMAP2420.  The previous code only enabled it on 2430 and
3430.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: NeilBrown <neilb@suse.de>
Tested-by: NeilBrown <neilb@suse.de>

2 files changed, 26 insertions, 38 deletions

diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 7b4b9327e54..8cab358603a 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -672,43 +672,6 @@ void __init omap242x_init_mmc(struct omap_mmc_platform_data **mmc_data)
 
 #endif
 
-/*-------------------------------------------------------------------------*/
-
-#if defined(CONFIG_HDQ_MASTER_OMAP) || defined(CONFIG_HDQ_MASTER_OMAP_MODULE)
-#define OMAP_HDQ_BASE   0x480B2000
-static struct resource omap_hdq_resources[] = {
-        {
-                .start          = OMAP_HDQ_BASE,
-                .end            = OMAP_HDQ_BASE + 0x1C,
-                .flags          = IORESOURCE_MEM,
-        },
-        {
-                .start          = INT_24XX_HDQ_IRQ,
-                .flags          = IORESOURCE_IRQ,
-        },
-};
-static struct platform_device omap_hdq_dev = {
-        .name = "omap_hdq",
-        .id = 0,
-        .dev = {
-                .platform_data = NULL,
-        },
-        .num_resources  = ARRAY_SIZE(omap_hdq_resources),
-        .resource       = omap_hdq_resources,
-};
-static inline void omap_hdq_init(void)
-{
-        if (cpu_is_omap2420())
-                return;
-
-        platform_device_register(&omap_hdq_dev);
-}
-#else
-static inline void omap_hdq_init(void) {}
-#endif
-
-/*---------------------------------------------------------------------------*/
-
 #if defined(CONFIG_VIDEO_OMAP2_VOUT) || \
         defined(CONFIG_VIDEO_OMAP2_VOUT_MODULE)
 #if defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
@@ -753,7 +716,6 @@ static int __init omap2_init_devices(void)
                 omap_init_mcspi();
         }
         omap_init_pmu();
-        omap_hdq_init();
         omap_init_sti();
         omap_init_sham();
         omap_init_aes();
diff --git a/arch/arm/mach-omap2/hdq1w.c b/arch/arm/mach-omap2/hdq1w.c
index 297ebe03f09..cdd6dda0382 100644
--- a/arch/arm/mach-omap2/hdq1w.c
+++ b/arch/arm/mach-omap2/hdq1w.c
@@ -22,7 +22,13 @@
  * 02110-1301 USA
  */
 
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+
 #include <plat/omap_hwmod.h>
+#include <plat/omap_device.h>
 #include <plat/hdq1w.h>
 
 #include "common.h"
@@ -70,3 +76,23 @@ int omap_hdq1w_reset(struct omap_hwmod *oh)
 
         return 0;
 }
+
+static int __init omap_init_hdq(void)
+{
+        int id = -1;
+        struct platform_device *pdev;
+        struct omap_hwmod *oh;
+        char *oh_name = "hdq1w";
+        char *devname = "omap_hdq";
+
+        oh = omap_hwmod_lookup(oh_name);
+        if (!oh)
+                return 0;
+
+        pdev = omap_device_build(devname, id, oh, NULL, 0, NULL, 0, 0);
+        WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
+             devname, oh->name);
+
+        return 0;
+}
+arch_initcall(omap_init_hdq);