From 0113613faf0214b5e04ccf9149c330ee67f9779c Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Mon, 21 Jan 2019 07:22:54 +0100 Subject: Revert "Input: olpc_apsp - enable the SP clock" Turns out this is not such a great idea. Once the SP clock is disabled, it's not sufficient to just enable in order to bring the SP core back up. It seems that the kernel has no business managing this clock. Just let the firmware keep it enabled. This reverts commit ed22cee91a88c47e564478b012fdbcb079653499. Link: https://lore.kernel.org/lkml/154783267051.169631.3197836544646625747@swboyd.mtv.corp.google.com/ Signed-off-by: Lubomir Rintel Acked-by: Dmitry Torokhov Signed-off-by: Stephen Boyd --- drivers/input/serio/olpc_apsp.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers/input/serio') diff --git a/drivers/input/serio/olpc_apsp.c b/drivers/input/serio/olpc_apsp.c index b36084710f69..698003309d2c 100644 --- a/drivers/input/serio/olpc_apsp.c +++ b/drivers/input/serio/olpc_apsp.c @@ -23,7 +23,6 @@ #include #include #include -#include /* * The OLPC XO-1.75 and XO-4 laptops do not have a hardware PS/2 controller. @@ -75,7 +74,6 @@ struct olpc_apsp { struct serio *kbio; struct serio *padio; void __iomem *base; - struct clk *clk; int open_count; int irq; }; @@ -148,17 +146,11 @@ static int olpc_apsp_open(struct serio *port) struct olpc_apsp *priv = port->port_data; unsigned int tmp; unsigned long l; - int error; if (priv->open_count++ == 0) { - error = clk_prepare_enable(priv->clk); - if (error) - return error; - l = readl(priv->base + COMMAND_FIFO_STATUS); if (!(l & CMD_STS_MASK)) { dev_err(priv->dev, "SP cannot accept commands.\n"); - clk_disable_unprepare(priv->clk); return -EIO; } @@ -179,8 +171,6 @@ static void olpc_apsp_close(struct serio *port) /* Disable interrupt 0 */ tmp = readl(priv->base + PJ_INTERRUPT_MASK); writel(tmp | INT_0, priv->base + PJ_INTERRUPT_MASK); - - clk_disable_unprepare(priv->clk); } } @@ -206,10 +196,6 @@ static int olpc_apsp_probe(struct platform_device *pdev) if (priv->irq < 0) return priv->irq; - priv->clk = devm_clk_get(&pdev->dev, "sp"); - if (IS_ERR(priv->clk)) - return PTR_ERR(priv->clk); - /* KEYBOARD */ kb_serio = kzalloc(sizeof(struct serio), GFP_KERNEL); if (!kb_serio) -- cgit v1.2.3-58-ga151