diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/aspeed-lpc-ctrl.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/misc/aspeed-lpc-ctrl.c b/drivers/misc/aspeed-lpc-ctrl.c index b5439643f54b..1827b7aa6674 100644 --- a/drivers/misc/aspeed-lpc-ctrl.c +++ b/drivers/misc/aspeed-lpc-ctrl.c @@ -7,6 +7,7 @@ * 2 of the License, or (at your option) any later version. */ +#include <linux/clk.h> #include <linux/mfd/syscon.h> #include <linux/miscdevice.h> #include <linux/mm.h> @@ -26,6 +27,7 @@ struct aspeed_lpc_ctrl { struct miscdevice miscdev; struct regmap *regmap; + struct clk *clk; phys_addr_t mem_base; resource_size_t mem_size; u32 pnor_size; @@ -221,16 +223,33 @@ static int aspeed_lpc_ctrl_probe(struct platform_device *pdev) return -ENODEV; } + lpc_ctrl->clk = devm_clk_get(dev, NULL); + if (IS_ERR(lpc_ctrl->clk)) { + dev_err(dev, "couldn't get clock\n"); + return PTR_ERR(lpc_ctrl->clk); + } + rc = clk_prepare_enable(lpc_ctrl->clk); + if (rc) { + dev_err(dev, "couldn't enable clock\n"); + return rc; + } + lpc_ctrl->miscdev.minor = MISC_DYNAMIC_MINOR; lpc_ctrl->miscdev.name = DEVICE_NAME; lpc_ctrl->miscdev.fops = &aspeed_lpc_ctrl_fops; lpc_ctrl->miscdev.parent = dev; rc = misc_register(&lpc_ctrl->miscdev); - if (rc) + if (rc) { dev_err(dev, "Unable to register device\n"); - else - dev_info(dev, "Loaded at %pr\n", &resm); + goto err; + } + + dev_info(dev, "Loaded at %pr\n", &resm); + + return 0; +err: + clk_disable_unprepare(lpc_ctrl->clk); return rc; } @@ -239,6 +258,7 @@ static int aspeed_lpc_ctrl_remove(struct platform_device *pdev) struct aspeed_lpc_ctrl *lpc_ctrl = dev_get_drvdata(&pdev->dev); misc_deregister(&lpc_ctrl->miscdev); + clk_disable_unprepare(lpc_ctrl->clk); return 0; } |