ARM: OMAP: ocp2scp: create omap device for ocp2scp

Platfrom device for ocp2scp is created using omap_device_build in
devices file. This is used for both omap4(musb) and omap5(dwc3).

This is needed to fix MUSB regression caused by commit c9e4412a
(arm: omap: phy: remove unused functions from omap-phy-internal.c)

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[tony@atomide.com: updated comments for regression info]
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index cba60e0..c72b5a7 100644 (file)
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -19,6 +19,7 @@
 #include <linux/of.h>
 #include <linux/pinctrl/machine.h>
 #include <linux/platform_data/omap4-keypad.h>
+#include <linux/platform_data/omap_ocp2scp.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/map.h>
@@ -613,6 +614,83 @@ static void omap_init_vout(void)
 static inline void omap_init_vout(void) {}
 #endif
 
+#if defined(CONFIG_OMAP_OCP2SCP) || defined(CONFIG_OMAP_OCP2SCP_MODULE)
+static int count_ocp2scp_devices(struct omap_ocp2scp_dev *ocp2scp_dev)
+{
+       int cnt = 0;
+
+       while (ocp2scp_dev->drv_name != NULL) {
+               cnt++;
+               ocp2scp_dev++;
+       }
+
+       return cnt;
+}
+
+static void omap_init_ocp2scp(void)
+{
+       struct omap_hwmod       *oh;
+       struct platform_device  *pdev;
+       int                     bus_id = -1, dev_cnt = 0, i;
+       struct omap_ocp2scp_dev *ocp2scp_dev;
+       const char              *oh_name, *name;
+       struct omap_ocp2scp_platform_data *pdata;
+
+       if (!cpu_is_omap44xx())
+               return;
+
+       oh_name = "ocp2scp_usb_phy";
+       name    = "omap-ocp2scp";
+
+       oh = omap_hwmod_lookup(oh_name);
+       if (!oh) {
+               pr_err("%s: could not find omap_hwmod for %s\n", __func__,
+                                                               oh_name);
+               return;
+       }
+
+       pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+       if (!pdata) {
+               pr_err("%s: No memory for ocp2scp pdata\n", __func__);
+               return;
+       }
+
+       ocp2scp_dev = oh->dev_attr;
+       dev_cnt = count_ocp2scp_devices(ocp2scp_dev);
+
+       if (!dev_cnt) {
+               pr_err("%s: No devices connected to ocp2scp\n", __func__);
+               kfree(pdata);
+               return;
+       }
+
+       pdata->devices = kzalloc(sizeof(struct omap_ocp2scp_dev *)
+                                       * dev_cnt, GFP_KERNEL);
+       if (!pdata->devices) {
+               pr_err("%s: No memory for ocp2scp pdata devices\n", __func__);
+               kfree(pdata);
+               return;
+       }
+
+       for (i = 0; i < dev_cnt; i++, ocp2scp_dev++)
+               pdata->devices[i] = ocp2scp_dev;
+
+       pdata->dev_cnt  = dev_cnt;
+
+       pdev = omap_device_build(name, bus_id, oh, pdata, sizeof(*pdata), NULL,
+                                                               0, false);
+       if (IS_ERR(pdev)) {
+               pr_err("Could not build omap_device for %s %s\n",
+                                               name, oh_name);
+               kfree(pdata->devices);
+               kfree(pdata);
+               return;
+       }
+}
+#else
+static inline void omap_init_ocp2scp(void) { }
+#endif
+
 /*-------------------------------------------------------------------------*/
 
 static int __init omap2_init_devices(void)
@@ -640,6 +718,7 @@ static int __init omap2_init_devices(void)
        omap_init_sham();
        omap_init_aes();
        omap_init_vout();
+       omap_init_ocp2scp();
 
        return 0;
 }