If CONFIG_PM is not set, build warns:
drivers/soundwire/intel.c:488:12: warning: 'intel_link_power_down' defined but not used [-Wunused-function]
Move this to #ifdef block.
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
drivers/soundwire/intel.c | 137 +++++++++++++++++++-------------------
1 file changed, 68 insertions(+), 69 deletions(-)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index e047910d73f5..ea53291c80dd 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -399,27 +399,6 @@ static void intel_shim_glue_to_master_ip(struct sdw_intel *sdw)
/* at this point Master IP has full control of the I/Os */
}
-/* this needs to be called with shim_lock */
-static void intel_shim_master_ip_to_glue(struct sdw_intel *sdw)
-{
- unsigned int link_id = sdw->instance;
- void __iomem *shim = sdw->link_res->shim;
- u16 ioctl;
-
- /* Glue logic */
- ioctl = intel_readw(shim, SDW_SHIM_IOCTL(link_id));
- ioctl |= SDW_SHIM_IOCTL_BKE;
- ioctl |= SDW_SHIM_IOCTL_COE;
- intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl);
- usleep_range(10, 15);
-
- ioctl &= ~(SDW_SHIM_IOCTL_MIF);
- intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl);
- usleep_range(10, 15);
-
- /* at this point Integration Glue has full control of the I/Os */
-}
-
static int intel_shim_init(struct sdw_intel *sdw, bool clock_stop)
{
void __iomem *shim = sdw->link_res->shim;
@@ -485,54 +464,6 @@ static void intel_shim_wake(struct sdw_intel *sdw, bool wake_enable)
mutex_unlock(sdw->link_res->shim_lock);
}
-static int intel_link_power_down(struct sdw_intel *sdw)
-{
- u32 link_control, spa_mask, cpa_mask;
- unsigned int link_id = sdw->instance;
- void __iomem *shim = sdw->link_res->shim;
- u32 *shim_mask = sdw->link_res->shim_mask;
- int ret = 0;
-
- mutex_lock(sdw->link_res->shim_lock);
-
- intel_shim_master_ip_to_glue(sdw);
-
- if (!(*shim_mask & BIT(link_id)))
- dev_err(sdw->cdns.dev,
- "%s: Unbalanced power-up/down calls\n", __func__);
-
- *shim_mask &= ~BIT(link_id);
-
- if (!*shim_mask) {
-
- dev_dbg(sdw->cdns.dev, "%s: powering down all links\n", __func__);
-
- /* Link power down sequence */
- link_control = intel_readl(shim, SDW_SHIM_LCTL);
-
- /* only power-down enabled links */
- spa_mask = FIELD_PREP(SDW_SHIM_LCTL_SPA_MASK, ~sdw->link_res->link_mask);
- cpa_mask = FIELD_PREP(SDW_SHIM_LCTL_CPA_MASK, sdw->link_res->link_mask);
-
- link_control &= spa_mask;
-
- ret = intel_clear_bit(shim, SDW_SHIM_LCTL, link_control, cpa_mask);
- }
-
- link_control = intel_readl(shim, SDW_SHIM_LCTL);
-
- mutex_unlock(sdw->link_res->shim_lock);
-
- if (ret < 0) {
- dev_err(sdw->cdns.dev, "%s: could not power down link\n", __func__);
-
- return ret;
- }
-
- sdw->cdns.link_up = false;
- return 0;
-}
-
static void intel_shim_sync_arm(struct sdw_intel *sdw)
{
void __iomem *shim = sdw->link_res->shim;
@@ -1541,6 +1472,74 @@ int intel_master_process_wakeen_event(struct platform_device *pdev)
*/
#ifdef CONFIG_PM
+/* this needs to be called with shim_lock */
+static void intel_shim_master_ip_to_glue(struct sdw_intel *sdw)
+{
+ unsigned int link_id = sdw->instance;
+ void __iomem *shim = sdw->link_res->shim;
+ u16 ioctl;
+
+ /* Glue logic */
+ ioctl = intel_readw(shim, SDW_SHIM_IOCTL(link_id));
+ ioctl |= SDW_SHIM_IOCTL_BKE;
+ ioctl |= SDW_SHIM_IOCTL_COE;
+ intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl);
+ usleep_range(10, 15);
+
+ ioctl &= ~(SDW_SHIM_IOCTL_MIF);
+ intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl);
+ usleep_range(10, 15);
+
+ /* at this point Integration Glue has full control of the I/Os */
+}
+
+static int intel_link_power_down(struct sdw_intel *sdw)
+{
+ u32 link_control, spa_mask, cpa_mask;
+ unsigned int link_id = sdw->instance;
+ void __iomem *shim = sdw->link_res->shim;
+ u32 *shim_mask = sdw->link_res->shim_mask;
+ int ret = 0;
+
+ mutex_lock(sdw->link_res->shim_lock);
+
+ intel_shim_master_ip_to_glue(sdw);
+
+ if (!(*shim_mask & BIT(link_id)))
+ dev_err(sdw->cdns.dev,
+ "%s: Unbalanced power-up/down calls\n", __func__);
+
+ *shim_mask &= ~BIT(link_id);
+
+ if (!*shim_mask) {
+
+ dev_dbg(sdw->cdns.dev, "%s: powering down all links\n", __func__);
+
+ /* Link power down sequence */
+ link_control = intel_readl(shim, SDW_SHIM_LCTL);
+
+ /* only power-down enabled links */
+ spa_mask = FIELD_PREP(SDW_SHIM_LCTL_SPA_MASK, ~sdw->link_res->link_mask);
+ cpa_mask = FIELD_PREP(SDW_SHIM_LCTL_CPA_MASK, sdw->link_res->link_mask);
+
+ link_control &= spa_mask;
+
+ ret = intel_clear_bit(shim, SDW_SHIM_LCTL, link_control, cpa_mask);
+ }
+
+ link_control = intel_readl(shim, SDW_SHIM_LCTL);
+
+ mutex_unlock(sdw->link_res->shim_lock);
+
+ if (ret < 0) {
+ dev_err(sdw->cdns.dev, "%s: could not power down link\n", __func__);
+
+ return ret;
+ }
+
+ sdw->cdns.link_up = false;
+ return 0;
+}
static int __maybe_unused intel_suspend(struct device *dev)
{
--
2.17.1
