diff options
Diffstat (limited to 'drivers/crypto/rockchip/rk3288_crypto.c')
| -rw-r--r-- | drivers/crypto/rockchip/rk3288_crypto.c | 92 |
1 files changed, 73 insertions, 19 deletions
diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c index d96f375423d5..6217e73ba4c4 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.c +++ b/drivers/crypto/rockchip/rk3288_crypto.c @@ -19,6 +19,23 @@ #include <linux/crypto.h> #include <linux/reset.h> +static struct rockchip_ip rocklist = { + .dev_list = LIST_HEAD_INIT(rocklist.dev_list), + .lock = __SPIN_LOCK_UNLOCKED(rocklist.lock), +}; + +struct rk_crypto_info *get_rk_crypto(void) +{ + struct rk_crypto_info *first; + + spin_lock(&rocklist.lock); + first = list_first_entry_or_null(&rocklist.dev_list, + struct rk_crypto_info, list); + list_rotate_left(&rocklist.dev_list); + spin_unlock(&rocklist.lock); + return first; +} + static const struct rk_variant rk3288_variant = { .num_clks = 4, .rkclks = { @@ -30,6 +47,10 @@ static const struct rk_variant rk3328_variant = { .num_clks = 3, }; +static const struct rk_variant rk3399_variant = { + .num_clks = 3, +}; + static int rk_crypto_get_clks(struct rk_crypto_info *dev) { int i, j, err; @@ -83,8 +104,8 @@ static void rk_crypto_disable_clk(struct rk_crypto_info *dev) } /* - * Power management strategy: The device is suspended unless a TFM exists for - * one of the algorithms proposed by this driver. + * Power management strategy: The device is suspended until a request + * is handled. For avoiding suspend/resume yoyo, the autosuspend is set to 2s. */ static int rk_crypto_pm_suspend(struct device *dev) { @@ -166,8 +187,17 @@ static struct rk_crypto_tmp *rk_cipher_algs[] = { #ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG static int rk_crypto_debugfs_show(struct seq_file *seq, void *v) { + struct rk_crypto_info *dd; unsigned int i; + spin_lock(&rocklist.lock); + list_for_each_entry(dd, &rocklist.dev_list, list) { + seq_printf(seq, "%s %s requests: %lu\n", + dev_driver_string(dd->dev), dev_name(dd->dev), + dd->nreq); + } + spin_unlock(&rocklist.lock); + for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) { if (!rk_cipher_algs[i]->dev) continue; @@ -198,6 +228,18 @@ static int rk_crypto_debugfs_show(struct seq_file *seq, void *v) DEFINE_SHOW_ATTRIBUTE(rk_crypto_debugfs); #endif +static void register_debugfs(struct rk_crypto_info *crypto_info) +{ +#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG + /* Ignore error of debugfs */ + rocklist.dbgfs_dir = debugfs_create_dir("rk3288_crypto", NULL); + rocklist.dbgfs_stats = debugfs_create_file("stats", 0444, + rocklist.dbgfs_dir, + &rocklist, + &rk_crypto_debugfs_fops); +#endif +} + static int rk_crypto_register(struct rk_crypto_info *crypto_info) { unsigned int i, k; @@ -255,6 +297,9 @@ static const struct of_device_id crypto_of_id_table[] = { { .compatible = "rockchip,rk3328-crypto", .data = &rk3328_variant, }, + { .compatible = "rockchip,rk3399-crypto", + .data = &rk3399_variant, + }, {} }; MODULE_DEVICE_TABLE(of, crypto_of_id_table); @@ -262,7 +307,7 @@ MODULE_DEVICE_TABLE(of, crypto_of_id_table); static int rk_crypto_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct rk_crypto_info *crypto_info; + struct rk_crypto_info *crypto_info, *first; int err = 0; crypto_info = devm_kzalloc(&pdev->dev, @@ -325,22 +370,22 @@ static int rk_crypto_probe(struct platform_device *pdev) if (err) goto err_pm; - err = rk_crypto_register(crypto_info); - if (err) { - dev_err(dev, "err in register alg"); - goto err_register_alg; - } + spin_lock(&rocklist.lock); + first = list_first_entry_or_null(&rocklist.dev_list, + struct rk_crypto_info, list); + list_add_tail(&crypto_info->list, &rocklist.dev_list); + spin_unlock(&rocklist.lock); + + if (!first) { + err = rk_crypto_register(crypto_info); + if (err) { + dev_err(dev, "Fail to register crypto algorithms"); + goto err_register_alg; + } -#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG - /* Ignore error of debugfs */ - crypto_info->dbgfs_dir = debugfs_create_dir("rk3288_crypto", NULL); - crypto_info->dbgfs_stats = debugfs_create_file("stats", 0444, - crypto_info->dbgfs_dir, - crypto_info, - &rk_crypto_debugfs_fops); -#endif + register_debugfs(crypto_info); + } - dev_info(dev, "Crypto Accelerator successfully registered\n"); return 0; err_register_alg: @@ -355,11 +400,20 @@ err_crypto: static int rk_crypto_remove(struct platform_device *pdev) { struct rk_crypto_info *crypto_tmp = platform_get_drvdata(pdev); + struct rk_crypto_info *first; + + spin_lock_bh(&rocklist.lock); + list_del(&crypto_tmp->list); + first = list_first_entry_or_null(&rocklist.dev_list, + struct rk_crypto_info, list); + spin_unlock_bh(&rocklist.lock); + if (!first) { #ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG - debugfs_remove_recursive(crypto_tmp->dbgfs_dir); + debugfs_remove_recursive(rocklist.dbgfs_dir); #endif - rk_crypto_unregister(); + rk_crypto_unregister(); + } rk_crypto_pm_exit(crypto_tmp); crypto_engine_exit(crypto_tmp->engine); return 0; |