Messages in this thread Patch in this message | | | From | Holger Dengler <> | Subject | [PATCH 04/11] mfd: flexcard: add clocksrc device | Date | Wed, 25 Mar 2015 10:51:53 +0100 |
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From: Benedikt Spranger <b.spranger@linutronix.de>
The Flexcard offers a Flexray network synchronized counter with a selectable resolution of 1us, 100ns or 10ns. Add an appropriate MFD-cell to use the counter.
Signed-off-by: Holger Dengler <dengler@linutronix.de> Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de> cc: Samuel Ortiz <sameo@linux.intel.com> cc: Lee Jones <lee.jones@linaro.org> --- drivers/mfd/flexcard/core.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+)
diff --git a/drivers/mfd/flexcard/core.c b/drivers/mfd/flexcard/core.c index 6477019..c73ae5c 100644 --- a/drivers/mfd/flexcard/core.c +++ b/drivers/mfd/flexcard/core.c @@ -28,6 +28,29 @@ static DEFINE_IDA(flexcard_ida); static const char drv_name[] = "flexcard"; +static struct resource flexcard_clk_res[] = { + { + .name = "flexcard-clksrc", + .start = 0x700, + .end = 0x713, + .flags = IORESOURCE_MEM, + }, { + .name = "flexcard-reset", + .start = 0x144, + .end = 0x147, + .flags = IORESOURCE_MEM, + }, +}; + +static struct mfd_cell flexcard_clk_dev[] = { + { + .id = 0, + .name = "flexcard-clksrc", + .num_resources = ARRAY_SIZE(flexcard_clk_res), + .resources = flexcard_clk_res, + }, +}; + static int flexcard_tiny_can(struct flexcard_device *priv, int idx, int id, u32 offset) { @@ -111,6 +134,21 @@ static int flexcard_tiny_probe(struct flexcard_device *priv) return mfd_add_devices(&pdev->dev, 0, priv->cells, nr, NULL, 0, NULL); } +static int flexcard_clk_setup(struct flexcard_device *priv) +{ + struct pci_dev *pdev = priv->pdev; + int i; + + for (i = 0; i < ARRAY_SIZE(flexcard_clk_res); i++) + flexcard_clk_res[i].parent = &pdev->resource[0]; + + flexcard_clk_dev[0].id = priv->cardnr; + + return mfd_add_devices(&pdev->dev, 0, flexcard_clk_dev, + ARRAY_SIZE(flexcard_clk_dev), + &pdev->resource[0], 0, NULL); +} + static int flexcard_misc_open(struct inode *inode, struct file *filp) { struct flexcard_device *priv = @@ -233,6 +271,12 @@ static int flexcard_probe(struct pci_dev *pdev, goto out_unmap; } + ret = flexcard_clk_setup(priv); + if (ret) { + dev_err(&pdev->dev, "unable to register clksrc: %d\n", ret); + goto out_remove; + } + ret = misc_register(&priv->dev); if (ret) { dev_err(&pdev->dev, "unable to register miscdevice: %d\n", ret); -- 2.1.4
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