diff options
author | Ulf Hansson <ulf.hansson@linaro.org> | 2012-11-22 10:35:39 (GMT) |
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committer | Mike Turquette <mturquette@linaro.org> | 2012-11-26 16:14:12 (GMT) |
commit | 45228ef32240957b1536fbba1ca12377cb2e587c (patch) | |
tree | 3543f8c8a13ac70c81b2ea84820ba6bf8b33c5be /drivers/clk/ux500/abx500-clk.c | |
parent | b70e6d009a88e09805152597e02f3d97a1d6ee99 (diff) | |
download | linux-fsl-qoriq-45228ef32240957b1536fbba1ca12377cb2e587c.tar.xz |
clk: ux500: Initial support for abx500 clock driver
The abx500 clock driver is a platform driver which will be initialized
during arch init. The platform device shall be added from the ab-core
driver as a mfd child device to maintain correct boot sequence.
Depending on what ab version we use, different clock definitions will
be added.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/ux500/abx500-clk.c')
-rw-r--r-- | drivers/clk/ux500/abx500-clk.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/clk/ux500/abx500-clk.c b/drivers/clk/ux500/abx500-clk.c new file mode 100644 index 0000000..e27c523 --- /dev/null +++ b/drivers/clk/ux500/abx500-clk.c @@ -0,0 +1,73 @@ +/* + * abx500 clock implementation for ux500 platform. + * + * Copyright (C) 2012 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + * + * License terms: GNU General Public License (GPL) version 2 + */ + +#include <linux/err.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/mfd/abx500/ab8500.h> + +/* TODO: Add clock implementations here */ + + +/* Clock definitions for ab8500 */ +static int ab8500_reg_clks(struct device *dev) +{ + return 0; +} + +/* Clock definitions for ab8540 */ +static int ab8540_reg_clks(struct device *dev) +{ + return 0; +} + +/* Clock definitions for ab9540 */ +static int ab9540_reg_clks(struct device *dev) +{ + return 0; +} + +static int __devinit abx500_clk_probe(struct platform_device *pdev) +{ + struct ab8500 *parent = dev_get_drvdata(pdev->dev.parent); + int ret; + + if (is_ab8500(parent) || is_ab8505(parent)) { + ret = ab8500_reg_clks(&pdev->dev); + } else if (is_ab8540(parent)) { + ret = ab8540_reg_clks(&pdev->dev); + } else if (is_ab9540(parent)) { + ret = ab9540_reg_clks(&pdev->dev); + } else { + dev_err(&pdev->dev, "non supported plf id\n"); + return -ENODEV; + } + + return ret; +} + +static struct platform_driver abx500_clk_driver = { + .driver = { + .name = "abx500-clk", + .owner = THIS_MODULE, + }, + .probe = abx500_clk_probe, +}; + +static int __init abx500_clk_init(void) +{ + return platform_driver_register(&abx500_clk_driver); +} + +arch_initcall(abx500_clk_init); + +MODULE_AUTHOR("Ulf Hansson <ulf.hansson@linaro.org"); +MODULE_DESCRIPTION("ABX500 clk driver"); +MODULE_LICENSE("GPL v2"); |