diff options
Diffstat (limited to 'drivers/soc/aspeed/aspeed-lpc-snoop.c')
| -rw-r--r-- | drivers/soc/aspeed/aspeed-lpc-snoop.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/soc/aspeed/aspeed-lpc-snoop.c b/drivers/soc/aspeed/aspeed-lpc-snoop.c index 682ba0eb4eba..20acac6342ef 100644 --- a/drivers/soc/aspeed/aspeed-lpc-snoop.c +++ b/drivers/soc/aspeed/aspeed-lpc-snoop.c @@ -11,6 +11,7 @@ */ #include <linux/bitops.h> +#include <linux/clk.h> #include <linux/interrupt.h> #include <linux/fs.h> #include <linux/kfifo.h> @@ -67,6 +68,7 @@ struct aspeed_lpc_snoop_channel { struct aspeed_lpc_snoop { struct regmap *regmap; int irq; + struct clk *clk; struct aspeed_lpc_snoop_channel chan[NUM_SNOOP_CHANNELS]; }; @@ -282,22 +284,42 @@ static int aspeed_lpc_snoop_probe(struct platform_device *pdev) return -ENODEV; } + lpc_snoop->clk = devm_clk_get(dev, NULL); + if (IS_ERR(lpc_snoop->clk)) { + rc = PTR_ERR(lpc_snoop->clk); + if (rc != -EPROBE_DEFER) + dev_err(dev, "couldn't get clock\n"); + return rc; + } + rc = clk_prepare_enable(lpc_snoop->clk); + if (rc) { + dev_err(dev, "couldn't enable clock\n"); + return rc; + } + rc = aspeed_lpc_snoop_config_irq(lpc_snoop, pdev); if (rc) - return rc; + goto err; rc = aspeed_lpc_enable_snoop(lpc_snoop, dev, 0, port); if (rc) - return rc; + goto err; /* Configuration of 2nd snoop channel port is optional */ if (of_property_read_u32_index(dev->of_node, "snoop-ports", 1, &port) == 0) { rc = aspeed_lpc_enable_snoop(lpc_snoop, dev, 1, port); - if (rc) + if (rc) { aspeed_lpc_disable_snoop(lpc_snoop, 0); + goto err; + } } + return 0; + +err: + clk_disable_unprepare(lpc_snoop->clk); + return rc; } @@ -309,6 +331,8 @@ static int aspeed_lpc_snoop_remove(struct platform_device *pdev) aspeed_lpc_disable_snoop(lpc_snoop, 0); aspeed_lpc_disable_snoop(lpc_snoop, 1); + clk_disable_unprepare(lpc_snoop->clk); + return 0; } |