ARM: tegra: bbc: set LA based on ISO requests

The BBCR and BBCW LA values should be set based on ISO bw
reservation requests. The BBCLLR LA value should be set for
640 MB/s so that cache misses are not throttled and is not
expected to change.

Bug 1258931

Change-Id: Ibfcc1fac931bab6600d13aee0e43761a10b801ad
Signed-off-by: Neil Patel <neilp@nvidia.com>
Reviewed-on: http://git-master/r/212156
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Frederic Bossy <fbossy@nvidia.com>
Reviewed-by: Stephane Dion <sdion@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Steve Lin <stlin@nvidia.com>

diff --git a/arch/arm/mach-tegra/tegra_bbc_proxy.c b/arch/arm/mach-tegra/tegra_bbc_proxy.c
index c51d82d229124f777d17c1f23b775b4479c0ff21..23dbb196970f14f1b44c1986ce321911267cc5e9 100644 (file)
--- a/arch/arm/mach-tegra/tegra_bbc_proxy.c
+++ b/arch/arm/mach-tegra/tegra_bbc_proxy.c
@@ -316,6 +316,9 @@ static ssize_t iso_reserve_store(struct device *dev,
        if (!ret)
                dev_err(dev, "can't reserve iso bw\n");
 
+       tegra_set_latency_allowance(TEGRA_LA_BBCR, bw / 1000);
+       tegra_set_latency_allowance(TEGRA_LA_BBCW, bw / 1000);
+
        return size;
 }
 
@@ -380,7 +383,9 @@ static ssize_t iso_res_realize_store(struct device *dev,
                return size;
        }
 
-/* TODO: set LA*/
+       tegra_set_latency_allowance(TEGRA_LA_BBCR, bw / 1000);
+       tegra_set_latency_allowance(TEGRA_LA_BBCW, bw / 1000);
+
        return size;
 }
 
@@ -584,6 +589,8 @@ static int tegra_bbc_proxy_probe(struct platform_device *pdev)
        if (!bbc->isomgr_handle)
                goto iso_error;
 
+       tegra_set_latency_allowance(TEGRA_LA_BBCLLR, 640);
+
        attrs = mc_attributes;
        while ((attr = *attrs++)) {
                ret = device_create_file(&pdev->dev, attr);