/*
* Return value:
* 0: success
* -EINVAL: invalid <ctx> or invalid id in <req> array
* -ENODEV: RPM driver not initialized.
*/
static int msm_rpm_clear_common(
int ctx, struct msm_rpm_iv_pair *req, int count, bool noirq)
{
uint32_t sel_masks[MSM_RPM_SEL_MASK_SIZE] = {};
struct msm_rpm_iv_pair r[MSM_RPM_SEL_MASK_SIZE];
int rc;
int i;
if (!msm_rpm_platform) {
if (cpu_is_apq8064())
return 0;
else
return -ENODEV;
}
if (ctx >= MSM_RPM_CTX_SET_COUNT) {
rc = -EINVAL;
goto clear_common_exit;
}
rc = msm_rpm_fill_sel_masks(sel_masks, req, count);
if (rc)
goto clear_common_exit;
for (i = 0; i < ARRAY_SIZE(r); i++) {
r[i].id = MSM_RPM_ID_INVALIDATE_0 + i;
r[i].value = sel_masks[i];
}
memset(sel_masks, 0, sizeof(sel_masks));
sel_masks[msm_rpm_get_sel_mask_reg(MSM_RPM_SEL_INVALIDATE)] |=
msm_rpm_get_sel_mask(MSM_RPM_SEL_INVALIDATE);
if (noirq) {
unsigned long flags;
spin_lock_irqsave(&msm_rpm_lock, flags);
rc = msm_rpm_set_exclusive_noirq(ctx, sel_masks, r,
ARRAY_SIZE(r));
spin_unlock_irqrestore(&msm_rpm_lock, flags);
BUG_ON(rc);
} else {
mutex_lock(&msm_rpm_mutex);
rc = msm_rpm_set_exclusive(ctx, sel_masks, r, ARRAY_SIZE(r));
mutex_unlock(&msm_rpm_mutex);
BUG_ON(rc);
}
clear_common_exit:
return rc;
}
/*
* Note: assumes caller has acquired <msm_rpm_mutex>.
*/
static void msm_rpm_update_notification(uint32_t ctx,
struct msm_rpm_notif_config *curr_cfg,
struct msm_rpm_notif_config *new_cfg)
{
if (memcmp(curr_cfg, new_cfg, sizeof(*new_cfg))) {
uint32_t sel_masks[MSM_RPM_SEL_MASK_SIZE] = {};
int rc;
sel_masks[msm_rpm_get_sel_mask_reg(MSM_RPM_SEL_NOTIFICATION)]
|= msm_rpm_get_sel_mask(MSM_RPM_SEL_NOTIFICATION);
rc = msm_rpm_set_exclusive(ctx,
sel_masks, new_cfg->iv, ARRAY_SIZE(new_cfg->iv));
BUG_ON(rc);
memcpy(curr_cfg, new_cfg, sizeof(*new_cfg));
}
}
/*
* Note: the function does not clear the masks before filling them.
*
* Return value:
* 0: success
* -EINVAL: invalid id in <req> array
*/
static int msm_rpm_fill_sel_masks(
uint32_t *sel_masks, struct msm_rpm_iv_pair *req, int count)
{
uint32_t sel;
int i;
for (i = 0; i < count; i++) {
sel = msm_rpm_map_id_to_sel(req[i].id);
if (sel > MSM_RPM_SEL_LAST)
return -EINVAL;
sel_masks[msm_rpm_get_sel_mask_reg(sel)] |=
msm_rpm_get_sel_mask(sel);
}
return 0;
}
/*
* Note: assumes caller has acquired <msm_rpm_mutex>.
*/
static void msm_rpm_update_notification(uint32_t ctx,
struct msm_rpm_notif_config *curr_cfg,
struct msm_rpm_notif_config *new_cfg)
{
unsigned int sel_notif = msm_rpm_data.sel_notification;
if (memcmp(curr_cfg, new_cfg, sizeof(*new_cfg))) {
uint32_t sel_masks[SEL_MASK_SIZE] = {};
int rc;
sel_masks[msm_rpm_get_sel_mask_reg(sel_notif)]
|= msm_rpm_get_sel_mask(sel_notif);
rc = msm_rpm_set_exclusive(ctx,
sel_masks, new_cfg->iv, ARRAY_SIZE(new_cfg->iv));
BUG_ON(rc);
memcpy(curr_cfg, new_cfg, sizeof(*new_cfg));
}
}
/*
* Note: the function does not clear the masks before filling them.
*
* Return value:
* 0: success
* -EINVAL: invalid id in <req> array
*/
static int msm_rpm_fill_sel_masks(
uint32_t *sel_masks, struct msm_rpm_iv_pair *req, int count)
{
uint32_t sel;
int i;
for (i = 0; i < count; i++) {
sel = msm_rpm_map_id_to_sel(req[i].id);
if (sel > msm_rpm_data.sel_last) {
pr_err("%s(): RPM ID %d not defined for target\n",
__func__, req[i].id);
return -EINVAL;
}
sel_masks[msm_rpm_get_sel_mask_reg(sel)] |=
msm_rpm_get_sel_mask(sel);
}
return 0;
}