diff options
author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-05-08 08:55:49 (GMT) |
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committer | Vinod Koul <vinod.koul@intel.com> | 2013-05-14 04:53:58 (GMT) |
commit | b59cc200ac025aca597fb21862c1c9e667f2eff2 (patch) | |
tree | fabada02fb402faffe5ec3582df3806b4c27d97c /drivers/clk/x86 | |
parent | ee8209fd026b074bb8eb75bece516a338a281b1b (diff) | |
download | linux-fsl-qoriq-b59cc200ac025aca597fb21862c1c9e667f2eff2.tar.xz |
ACPI / LPSS: register clock device for Lynxpoint DMA properly
The DMA controller in Lynxpoint is enumerated as a regular ACPI device now. To
work properly it is using the LPSS root clock as a functional clock. That's why
we have to register the clock device accordingly to the ACPI ID of the DMA
controller. The acpi_lpss.c module is responsible to do the job.
This patch also removes hardcoded name of the DMA device in clk-lpt.c and the
name of the root clock in acpi_lpss.c.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/clk/x86')
-rw-r--r-- | drivers/clk/x86/clk-lpt.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/clk/x86/clk-lpt.c b/drivers/clk/x86/clk-lpt.c index 5cf4f46..4f45eee 100644 --- a/drivers/clk/x86/clk-lpt.c +++ b/drivers/clk/x86/clk-lpt.c @@ -15,22 +15,29 @@ #include <linux/clk-provider.h> #include <linux/err.h> #include <linux/module.h> +#include <linux/platform_data/clk-lpss.h> #include <linux/platform_device.h> #define PRV_CLOCK_PARAMS 0x800 static int lpt_clk_probe(struct platform_device *pdev) { + struct lpss_clk_data *drvdata; struct clk *clk; + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + /* LPSS free running clock */ - clk = clk_register_fixed_rate(&pdev->dev, "lpss_clk", NULL, CLK_IS_ROOT, - 100000000); + drvdata->name = "lpss_clk"; + clk = clk_register_fixed_rate(&pdev->dev, drvdata->name, NULL, + CLK_IS_ROOT, 100000000); if (IS_ERR(clk)) return PTR_ERR(clk); - /* Shared DMA clock */ - clk_register_clkdev(clk, "hclk", "INTL9C60.0.auto"); + drvdata->clk = clk; + platform_set_drvdata(pdev, drvdata); return 0; } |