diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-09-07 21:48:46 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-09-15 13:29:46 +0300 |
| commit | 0470bb1b71ac1f05055b10bdc791953209a7976b (patch) | |
| tree | ea2870278e1330604766a50790fff9f67349440f /drivers/crypto/ccp/psp-dev.c | |
| parent | 3d5845e18066990ede565ffe2975e6d89786da50 (diff) | |
| download | linux-0470bb1b71ac1f05055b10bdc791953209a7976b.tar.xz | |
crypto: ccp - Add support for DBC over PSP mailbox
On some SOCs DBC is supported through the PSP mailbox instead of
the platform mailbox. This capability is advertised in the PSP
capabilities register. Allow using this communication path if
supported.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/psp-dev.c')
| -rw-r--r-- | drivers/crypto/ccp/psp-dev.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c index 5f61b23695d5..124a2e0c8999 100644 --- a/drivers/crypto/ccp/psp-dev.c +++ b/drivers/crypto/ccp/psp-dev.c @@ -187,23 +187,6 @@ static int psp_check_tee_support(struct psp_device *psp) return 0; } -static void psp_init_platform_access(struct psp_device *psp) -{ - int ret; - - ret = platform_access_dev_init(psp); - if (ret) { - dev_warn(psp->dev, "platform access init failed: %d\n", ret); - return; - } - - /* dbc must come after platform access as it tests the feature */ - ret = dbc_dev_init(psp); - if (ret) - dev_warn(psp->dev, "failed to init dynamic boost control: %d\n", - ret); -} - static int psp_init(struct psp_device *psp) { int ret; @@ -220,8 +203,19 @@ static int psp_init(struct psp_device *psp) return ret; } - if (psp->vdata->platform_access) - psp_init_platform_access(psp); + if (psp->vdata->platform_access) { + ret = platform_access_dev_init(psp); + if (ret) + return ret; + } + + /* dbc must come after platform access as it tests the feature */ + if (PSP_FEATURE(psp, DBC) || + PSP_CAPABILITY(psp, DBC_THRU_EXT)) { + ret = dbc_dev_init(psp); + if (ret) + return ret; + } return 0; } |