tegra-se-elp: Add tegra214-se-elp compatible

Add T214 compatible for tegra-se-elp driver.
Also bypass RNG1 code for T214 using chipdata

Change-Id: I1ec627371f681ab15c69ec8d0222fa980b1e0098
Signed-off-by: Shravani Dingari <shravanid@nvidia.com>
Reviewed-on: http://git-master/r/1284026
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
Reviewed-by: Rakesh Babu Bodla <rbodla@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>

diff --git a/drivers/crypto/tegra-se-elp.c b/drivers/crypto/tegra-se-elp.c
index 0a93d6b4ba78f80a5de190e1ad9f70fdce3f4402..bc98fb813622ab26a21ee3d12dd19c8480b9b074 100644 (file)
--- a/drivers/crypto/tegra-se-elp.c
+++ b/drivers/crypto/tegra-se-elp.c
@@ -4,7 +4,7 @@
  *
  * Support for Tegra Security Engine Elliptic crypto algorithms.
  *
- * Copyright (c) 2015-2016, NVIDIA Corporation. All Rights Reserved.
+ * Copyright (c) 2015-2017, NVIDIA Corporation. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2, as
@@ -97,6 +97,7 @@ static char *rng1_cmd[] = {
 
 struct tegra_se_elp_chipdata {
        bool use_key_slot;
+       bool rng1_supported;
 };
 
 struct tegra_se_elp_dev {
@@ -2143,6 +2144,12 @@ static struct akcipher_alg pka1_rsa_algs[] = {
 
 static struct tegra_se_elp_chipdata tegra18_se_chipdata = {
        .use_key_slot = false,
+       .rng1_supported = true,
+};
+
+static struct tegra_se_elp_chipdata tegra21_se_chipdata = {
+       .use_key_slot = false,
+       .rng1_supported = false,
 };
 
 static int tegra_se_elp_probe(struct platform_device *pdev)
@@ -2167,6 +2174,9 @@ static int tegra_se_elp_probe(struct platform_device *pdev)
                se_dev->io_reg[i] = devm_ioremap_resource(se_dev->dev, res);
                if (IS_ERR(se_dev->io_reg[i]))
                        return PTR_ERR(se_dev->io_reg[i]);
+
+               if (!se_dev->chipdata->rng1_supported)
+                       break;
        }
 
        se_dev->c = devm_clk_get(se_dev->dev, "se");
@@ -2182,11 +2192,13 @@ static int tegra_se_elp_probe(struct platform_device *pdev)
                return err;
        }
 
-       se_dev->rdata = devm_kzalloc(se_dev->dev,
-                                    sizeof(u32) * 4, GFP_KERNEL);
-       if (!se_dev->rdata) {
-               err = -ENOMEM;
-               goto exit;
+       if (se_dev->chipdata->rng1_supported) {
+               se_dev->rdata = devm_kzalloc(se_dev->dev,
+                                            sizeof(u32) * 4, GFP_KERNEL);
+               if (!se_dev->rdata) {
+                       err = -ENOMEM;
+                       goto exit;
+               }
        }
 
        elp_dev = se_dev;
@@ -2266,6 +2278,9 @@ static const struct of_device_id tegra_se_elp_of_match[] = {
        {
                .compatible = "nvidia,tegra186-se-elp",
                .data = &tegra18_se_chipdata,
+       }, {
+               .compatible = "nvidia,tegra214-se-elp",
+               .data = &tegra21_se_chipdata,
        }, {
        },
 };