diff options
Diffstat (limited to 'drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c')
| -rw-r--r-- | drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c | 71 |
1 files changed, 51 insertions, 20 deletions
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c index a2b67f7f8a81..58a76e2ba64e 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c @@ -6,14 +6,14 @@ * * Core file which registers crypto algorithms supported by the SS. * - * You could find a link for the datasheet in Documentation/arm/sunxi.rst + * You could find a link for the datasheet in Documentation/arch/arm/sunxi.rst */ #include <linux/clk.h> #include <linux/crypto.h> +#include <linux/debugfs.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/of_device.h> #include <linux/platform_device.h> #include <crypto/scatterwalk.h> #include <linux/scatterlist.h> @@ -49,7 +49,6 @@ static struct sun4i_ss_alg_template ss_algs[] = { .cra_name = "md5", .cra_driver_name = "md5-sun4i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_blocksize = MD5_HMAC_BLOCK_SIZE, .cra_ctxsize = sizeof(struct sun4i_req_ctx), .cra_module = THIS_MODULE, @@ -76,7 +75,6 @@ static struct sun4i_ss_alg_template ss_algs[] = { .cra_name = "sha1", .cra_driver_name = "sha1-sun4i-ss", .cra_priority = 300, - .cra_alignmask = 3, .cra_blocksize = SHA1_BLOCK_SIZE, .cra_ctxsize = sizeof(struct sun4i_req_ctx), .cra_module = THIS_MODULE, @@ -234,6 +232,39 @@ static struct sun4i_ss_alg_template ss_algs[] = { #endif }; +static int sun4i_ss_debugfs_show(struct seq_file *seq, void *v) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(ss_algs); i++) { + if (!ss_algs[i].ss) + continue; + switch (ss_algs[i].type) { + case CRYPTO_ALG_TYPE_SKCIPHER: + seq_printf(seq, "%s %s reqs=%lu opti=%lu fallback=%lu tsize=%lu\n", + ss_algs[i].alg.crypto.base.cra_driver_name, + ss_algs[i].alg.crypto.base.cra_name, + ss_algs[i].stat_req, ss_algs[i].stat_opti, ss_algs[i].stat_fb, + ss_algs[i].stat_bytes); + break; + case CRYPTO_ALG_TYPE_RNG: + seq_printf(seq, "%s %s reqs=%lu tsize=%lu\n", + ss_algs[i].alg.rng.base.cra_driver_name, + ss_algs[i].alg.rng.base.cra_name, + ss_algs[i].stat_req, ss_algs[i].stat_bytes); + break; + case CRYPTO_ALG_TYPE_AHASH: + seq_printf(seq, "%s %s reqs=%lu\n", + ss_algs[i].alg.hash.halg.base.cra_driver_name, + ss_algs[i].alg.hash.halg.base.cra_name, + ss_algs[i].stat_req); + break; + } + } + return 0; +} +DEFINE_SHOW_ATTRIBUTE(sun4i_ss_debugfs); + /* * Power management strategy: The device is suspended unless a TFM exists for * one of the algorithms proposed by this driver. @@ -242,8 +273,7 @@ static int sun4i_ss_pm_suspend(struct device *dev) { struct sun4i_ss_ctx *ss = dev_get_drvdata(dev); - if (ss->reset) - reset_control_assert(ss->reset); + reset_control_assert(ss->reset); clk_disable_unprepare(ss->ssclk); clk_disable_unprepare(ss->busclk); @@ -268,12 +298,10 @@ static int sun4i_ss_pm_resume(struct device *dev) goto err_enable; } - if (ss->reset) { - err = reset_control_deassert(ss->reset); - if (err) { - dev_err(ss->dev, "Cannot deassert reset control\n"); - goto err_enable; - } + err = reset_control_deassert(ss->reset); + if (err) { + dev_err(ss->dev, "Cannot deassert reset control\n"); + goto err_enable; } return err; @@ -355,12 +383,10 @@ static int sun4i_ss_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "clock ahb_ss acquired\n"); ss->reset = devm_reset_control_get_optional(&pdev->dev, "ahb"); - if (IS_ERR(ss->reset)) { - if (PTR_ERR(ss->reset) == -EPROBE_DEFER) - return PTR_ERR(ss->reset); + if (IS_ERR(ss->reset)) + return PTR_ERR(ss->reset); + if (!ss->reset) dev_info(&pdev->dev, "no reset control found\n"); - ss->reset = NULL; - } /* * Check that clock have the correct rates given in the datasheet @@ -413,7 +439,7 @@ static int sun4i_ss_probe(struct platform_device *pdev) * this info could be useful */ - err = pm_runtime_get_sync(ss->dev); + err = pm_runtime_resume_and_get(ss->dev); if (err < 0) goto error_pm; @@ -454,6 +480,12 @@ static int sun4i_ss_probe(struct platform_device *pdev) break; } } + + /* Ignore error of debugfs */ + ss->dbgfs_dir = debugfs_create_dir("sun4i-ss", NULL); + ss->dbgfs_stats = debugfs_create_file("stats", 0444, ss->dbgfs_dir, ss, + &sun4i_ss_debugfs_fops); + return 0; error_alg: i--; @@ -475,7 +507,7 @@ error_pm: return err; } -static int sun4i_ss_remove(struct platform_device *pdev) +static void sun4i_ss_remove(struct platform_device *pdev) { int i; struct sun4i_ss_ctx *ss = platform_get_drvdata(pdev); @@ -495,7 +527,6 @@ static int sun4i_ss_remove(struct platform_device *pdev) } sun4i_ss_pm_exit(ss); - return 0; } static const struct of_device_id a20ss_crypto_of_match_table[] = { |