staging: ti dspbridge: add resource manager

Add TI's DSP Bridge resource manager driver sources

Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Signed-off-by: Kanigeri, Hari <h-kanigeri2@ti.com>
Signed-off-by: Ameya Palande <ameya.palande@nokia.com>
Signed-off-by: Guzman Lugo, Fernando <fernando.lugo@ti.com>
Signed-off-by: Hebbar, Shivananda <x0hebbar@ti.com>
Signed-off-by: Ramos Falcon, Ernesto <ernesto@ti.com>
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Anna, Suman <s-anna@ti.com>
Signed-off-by: Gupta, Ramesh <grgupta@ti.com>
Signed-off-by: Gomez Castellanos, Ivan <ivan.gomez@ti.com>
Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com>
Signed-off-by: Armando Uribe De Leon <x0095078@ti.com>
Signed-off-by: Deepak Chitriki <deepak.chitriki@ti.com>
Signed-off-by: Menon, Nishanth <nm@ti.com>
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 182 insertions, 0 deletions

diff --git a/drivers/staging/tidspbridge/rmgr/pwr.c b/drivers/staging/tidspbridge/rmgr/pwr.c
new file mode 100644
index 0000000..ec6d181
--- /dev/null
+++ b/drivers/staging/tidspbridge/rmgr/pwr.c
@@ -0,0 +1,182 @@
+/*
+ * pwr.c
+ *
+ * DSP-BIOS Bridge driver support functions for TI OMAP processors.
+ *
+ * PWR API for controlling DSP power states.
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*  ----------------------------------- Host OS */
+#include <dspbridge/host_os.h>
+
+/*  ----------------------------------- This */
+#include <dspbridge/pwr.h>
+
+/*  ----------------------------------- Resource Manager */
+#include <dspbridge/devdefs.h>
+#include <dspbridge/drv.h>
+
+/*  ----------------------------------- Platform Manager */
+#include <dspbridge/dev.h>
+
+/*  ----------------------------------- Link Driver */
+#include <dspbridge/dspioctl.h>
+
+/*
+ *  ======== pwr_sleep_dsp ========
+ *    Send command to DSP to enter sleep state.
+ */
+int pwr_sleep_dsp(IN CONST u32 sleepCode, IN CONST u32 timeout)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 ioctlcode = 0;
+	u32 arg = timeout;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj =
+	     (struct dev_object *)drv_get_next_dev_object((u32) hdev_obj)) {
+		if (DSP_FAILED(dev_get_bridge_context(hdev_obj,
+						(struct bridge_dev_context **)
+						   &dw_context))) {
+			continue;
+		}
+		if (DSP_FAILED(dev_get_intf_fxns(hdev_obj,
+						(struct bridge_drv_interface **)
+						&intf_fxns))) {
+			continue;
+		}
+		if (sleepCode == PWR_DEEPSLEEP)
+			ioctlcode = BRDIOCTL_DEEPSLEEP;
+		else if (sleepCode == PWR_EMERGENCYDEEPSLEEP)
+			ioctlcode = BRDIOCTL_EMERGENCYSLEEP;
+		else
+			status = -EINVAL;
+
+		if (status != -EINVAL) {
+			status = (*intf_fxns->pfn_dev_cntrl) (dw_context,
+							      ioctlcode,
+							      (void *)&arg);
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== pwr_wake_dsp ========
+ *    Send command to DSP to wake it from sleep.
+ */
+int pwr_wake_dsp(IN CONST u32 timeout)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 arg = timeout;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj = (struct dev_object *)drv_get_next_dev_object
+	     ((u32) hdev_obj)) {
+		if (DSP_SUCCEEDED(dev_get_bridge_context(hdev_obj,
+						      (struct bridge_dev_context
+						       **)&dw_context))) {
+			if (DSP_SUCCEEDED
+			    (dev_get_intf_fxns
+			     (hdev_obj,
+			      (struct bridge_drv_interface **)&intf_fxns))) {
+				status =
+				    (*intf_fxns->pfn_dev_cntrl) (dw_context,
+							BRDIOCTL_WAKEUP,
+							(void *)&arg);
+			}
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== pwr_pm_pre_scale========
+ *    Sends pre-notification message to DSP.
+ */
+int pwr_pm_pre_scale(IN u16 voltage_domain, u32 level)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 arg[2];
+
+	arg[0] = voltage_domain;
+	arg[1] = level;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj = (struct dev_object *)drv_get_next_dev_object
+	     ((u32) hdev_obj)) {
+		if (DSP_SUCCEEDED(dev_get_bridge_context(hdev_obj,
+						      (struct bridge_dev_context
+						       **)&dw_context))) {
+			if (DSP_SUCCEEDED
+			    (dev_get_intf_fxns
+			     (hdev_obj,
+			      (struct bridge_drv_interface **)&intf_fxns))) {
+				status =
+				    (*intf_fxns->pfn_dev_cntrl) (dw_context,
+						BRDIOCTL_PRESCALE_NOTIFY,
+						(void *)&arg);
+			}
+		}
+	}
+	return status;
+}
+
+/*
+ *  ======== pwr_pm_post_scale========
+ *    Sends post-notification message to DSP.
+ */
+int pwr_pm_post_scale(IN u16 voltage_domain, u32 level)
+{
+	struct bridge_drv_interface *intf_fxns;
+	struct bridge_dev_context *dw_context;
+	int status = -EPERM;
+	struct dev_object *hdev_obj = NULL;
+	u32 arg[2];
+
+	arg[0] = voltage_domain;
+	arg[1] = level;
+
+	for (hdev_obj = (struct dev_object *)drv_get_first_dev_object();
+	     hdev_obj != NULL;
+	     hdev_obj = (struct dev_object *)drv_get_next_dev_object
+	     ((u32) hdev_obj)) {
+		if (DSP_SUCCEEDED(dev_get_bridge_context(hdev_obj,
+						      (struct bridge_dev_context
+						       **)&dw_context))) {
+			if (DSP_SUCCEEDED
+			    (dev_get_intf_fxns
+			     (hdev_obj,
+			      (struct bridge_drv_interface **)&intf_fxns))) {
+				status =
+				    (*intf_fxns->pfn_dev_cntrl) (dw_context,
+						BRDIOCTL_POSTSCALE_NOTIFY,
+						(void *)&arg);
+			}
+		}
+	}
+	return status;
+
+}