platform: tegra: safety: Add multiple ivc channel support

Current safety ivc driver has support for single ivc channel which is used by
command/response safety module. This patch extends the driver functionality
to support multiple ivc channels, each exposed as char device to userspace
safety module. HeartBeat safety module will use one of the  ivc channel to
communicate with layer 2 (SCE) via this driver.

Bug 200267609

Change-Id: Ic9f83db90e2c6a4c9bf8d96d49753087817b7ad2
Reviewed-on: http://git-master/r/1310979
Signed-off-by: Abhijit <abhijit@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1535492
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sumeet Gupta <sumeetg@nvidia.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/include/linux/tegra-safety-ivc.h b/include/linux/tegra-safety-ivc.h
index 0549e8101..e508168e2 100644
--- a/include/linux/tegra-safety-ivc.h
+++ b/include/linux/tegra-safety-ivc.h
@@ -23,6 +23,8 @@ enum {
         SAFETY_CONF_IVC_READY = 1,
 };
 
+#define MAX_SAFETY_CHANNELS             5
+
 struct safety_ast_region {
         u8 ast_id;
         u32 slave_base;
@@ -42,7 +44,7 @@ struct tegra_safety_ivc {
                 atomic_t response;
                 atomic_t emptied;
         } cmd;
-        struct tegra_safety_ivc_chan *ivc_chan;
+        struct tegra_safety_ivc_chan *ivc_chan[MAX_SAFETY_CHANNELS];
 };
 
 struct tegra_safety_ivc_chan {
@@ -51,8 +53,8 @@ struct tegra_safety_ivc_chan {
         struct tegra_safety_ivc *safety_ivc;
 };
 
-int tegra_safety_dev_init(struct device *dev);
-void tegra_safety_dev_exit(struct device *dev);
+int tegra_safety_dev_init(struct device *dev, int index);
+void tegra_safety_dev_exit(struct device *dev, int index);
 void tegra_safety_dev_notify(void);
 
 #endif