/*
* omap_device implementation
*
- * Copyright (C) 2009 Nokia Corporation
+ * Copyright (C) 2009-2010 Nokia Corporation
* Paul Walmsley, Kevin Hilman
*
* Developed in collaboration with (alphabetical order): Benoit
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/io.h>
+#include <linux/clk.h>
#include <plat/omap_device.h>
#include <plat/omap_hwmod.h>
#define USE_WAKEUP_LAT 0
#define IGNORE_WAKEUP_LAT 1
-
-#define OMAP_DEVICE_MAGIC 0xf00dcafe
+/*
+ * OMAP_DEVICE_MAGIC: used to determine whether a struct omap_device
+ * obtained via container_of() is in fact a struct omap_device
+ */
+#define OMAP_DEVICE_MAGIC 0xf00dcafe
/* Private functions */
return container_of(pdev, struct omap_device, pdev);
}
+/**
+ * _add_optional_clock_alias - Add clock alias for hwmod optional clocks
+ * @od: struct omap_device *od
+ *
+ * For every optional clock present per hwmod per omap_device, this function
+ * adds an entry in the clocks list of the form <dev-id=dev_name, con-id=role>
+ * if an entry is already present in it with the form <dev-id=NULL, con-id=role>
+ *
+ * The function is called from inside omap_device_build_ss(), after
+ * omap_device_register.
+ *
+ * This allows drivers to get a pointer to its optional clocks based on its role
+ * by calling clk_get(<dev*>, <role>).
+ *
+ * No return value.
+ */
+static void _add_optional_clock_alias(struct omap_device *od,
+ struct omap_hwmod *oh)
+{
+ int i;
+
+ for (i = 0; i < oh->opt_clks_cnt; i++) {
+ struct omap_hwmod_opt_clk *oc;
+ int r;
+
+ oc = &oh->opt_clks[i];
+
+ if (!oc->_clk)
+ continue;
+
+ r = clk_add_alias(oc->role, dev_name(&od->pdev.dev),
+ (char *)oc->clk, &od->pdev.dev);
+ if (r)
+ pr_err("omap_device: %s: clk_add_alias for %s failed\n",
+ dev_name(&od->pdev.dev), oc->role);
+ }
+}
+
/* Public functions for use by core code */
*/
int omap_device_count_resources(struct omap_device *od)
{
- struct omap_hwmod *oh;
int c = 0;
int i;
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
- c += omap_hwmod_count_resources(oh);
+ for (i = 0; i < od->hwmods_cnt; i++)
+ c += omap_hwmod_count_resources(od->hwmods[i]);
pr_debug("omap_device: %s: counted %d total resources across %d "
"hwmods\n", od->pdev.name, c, od->hwmods_cnt);
*/
int omap_device_fill_resources(struct omap_device *od, struct resource *res)
{
- struct omap_hwmod *oh;
int c = 0;
int i, r;
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++) {
- r = omap_hwmod_fill_resources(oh, res);
+ for (i = 0; i < od->hwmods_cnt; i++) {
+ r = omap_hwmod_fill_resources(od->hwmods[i], res);
res += r;
c += r;
}
struct omap_device *od;
char *pdev_name2;
struct resource *res = NULL;
- int res_count;
+ int i, res_count;
struct omap_hwmod **hwmods;
if (!ohs || oh_cnt == 0 || !pdev_name)
od->pdev.num_resources = res_count;
od->pdev.resource = res;
- platform_device_add_data(&od->pdev, pdata, pdata_len);
+ ret = platform_device_add_data(&od->pdev, pdata, pdata_len);
+ if (ret)
+ goto odbs_exit4;
od->pm_lats = pm_lats;
od->pm_lats_cnt = pm_lats_cnt;
else
ret = omap_device_register(od);
+ for (i = 0; i < oh_cnt; i++) {
+ hwmods[i]->od = od;
+ _add_optional_clock_alias(od, hwmods[i]);
+ }
+
if (ret)
goto odbs_exit4;
{
int ret, i;
struct omap_device *od;
- struct omap_hwmod *oh;
od = _find_by_pdev(pdev);
ret = _omap_device_deactivate(od, IGNORE_WAKEUP_LAT);
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
- omap_hwmod_shutdown(oh);
+ for (i = 0; i < od->hwmods_cnt; i++)
+ omap_hwmod_shutdown(od->hwmods[i]);
od->_state = OMAP_DEVICE_STATE_SHUTDOWN;
return omap_hwmod_get_pwrdm(od->hwmods[0]);
}
+/**
+ * omap_device_get_mpu_rt_va - return the MPU's virtual addr for the hwmod base
+ * @od: struct omap_device *
+ *
+ * Return the MPU's virtual address for the base of the hwmod, from
+ * the ioremap() that the hwmod code does. Only valid if there is one
+ * hwmod associated with this device. Returns NULL if there are zero
+ * or more than one hwmods associated with this omap_device;
+ * otherwise, passes along the return value from
+ * omap_hwmod_get_mpu_rt_va().
+ */
+void __iomem *omap_device_get_rt_va(struct omap_device *od)
+{
+ if (od->hwmods_cnt != 1)
+ return NULL;
+
+ return omap_hwmod_get_mpu_rt_va(od->hwmods[0]);
+}
+
/*
* Public functions intended for use in omap_device_pm_latency
* .activate_func and .deactivate_func function pointers
*/
int omap_device_enable_hwmods(struct omap_device *od)
{
- struct omap_hwmod *oh;
int i;
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
- omap_hwmod_enable(oh);
+ for (i = 0; i < od->hwmods_cnt; i++)
+ omap_hwmod_enable(od->hwmods[i]);
/* XXX pass along return value here? */
return 0;
*/
int omap_device_idle_hwmods(struct omap_device *od)
{
- struct omap_hwmod *oh;
int i;
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
- omap_hwmod_idle(oh);
+ for (i = 0; i < od->hwmods_cnt; i++)
+ omap_hwmod_idle(od->hwmods[i]);
/* XXX pass along return value here? */
return 0;
*/
int omap_device_disable_clocks(struct omap_device *od)
{
- struct omap_hwmod *oh;
int i;
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
- omap_hwmod_disable_clocks(oh);
+ for (i = 0; i < od->hwmods_cnt; i++)
+ omap_hwmod_disable_clocks(od->hwmods[i]);
/* XXX pass along return value here? */
return 0;
*/
int omap_device_enable_clocks(struct omap_device *od)
{
- struct omap_hwmod *oh;
int i;
- for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
- omap_hwmod_enable_clocks(oh);
+ for (i = 0; i < od->hwmods_cnt; i++)
+ omap_hwmod_enable_clocks(od->hwmods[i]);
/* XXX pass along return value here? */
return 0;
git.openpandora.org / pandora-kernel.git / blobdiff