mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 15:15:59 +07:00
0777066dce
Make these const as they are only stored in the init field of a clk_hw structure, which is const. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/*
|
|
* TWL6040 clock module driver for OMAP4 McPDM functional clock
|
|
*
|
|
* Copyright (C) 2012 Texas Instruments Inc.
|
|
* Peter Ujfalusi <peter.ujfalusi@ti.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mfd/twl6040.h>
|
|
#include <linux/clk-provider.h>
|
|
|
|
struct twl6040_pdmclk {
|
|
struct twl6040 *twl6040;
|
|
struct device *dev;
|
|
struct clk_hw pdmclk_hw;
|
|
int enabled;
|
|
};
|
|
|
|
static int twl6040_pdmclk_is_prepared(struct clk_hw *hw)
|
|
{
|
|
struct twl6040_pdmclk *pdmclk = container_of(hw, struct twl6040_pdmclk,
|
|
pdmclk_hw);
|
|
|
|
return pdmclk->enabled;
|
|
}
|
|
|
|
static int twl6040_pdmclk_prepare(struct clk_hw *hw)
|
|
{
|
|
struct twl6040_pdmclk *pdmclk = container_of(hw, struct twl6040_pdmclk,
|
|
pdmclk_hw);
|
|
int ret;
|
|
|
|
ret = twl6040_power(pdmclk->twl6040, 1);
|
|
if (!ret)
|
|
pdmclk->enabled = 1;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void twl6040_pdmclk_unprepare(struct clk_hw *hw)
|
|
{
|
|
struct twl6040_pdmclk *pdmclk = container_of(hw, struct twl6040_pdmclk,
|
|
pdmclk_hw);
|
|
int ret;
|
|
|
|
ret = twl6040_power(pdmclk->twl6040, 0);
|
|
if (!ret)
|
|
pdmclk->enabled = 0;
|
|
|
|
}
|
|
|
|
static unsigned long twl6040_pdmclk_recalc_rate(struct clk_hw *hw,
|
|
unsigned long parent_rate)
|
|
{
|
|
struct twl6040_pdmclk *pdmclk = container_of(hw, struct twl6040_pdmclk,
|
|
pdmclk_hw);
|
|
|
|
return twl6040_get_sysclk(pdmclk->twl6040);
|
|
}
|
|
|
|
static const struct clk_ops twl6040_pdmclk_ops = {
|
|
.is_prepared = twl6040_pdmclk_is_prepared,
|
|
.prepare = twl6040_pdmclk_prepare,
|
|
.unprepare = twl6040_pdmclk_unprepare,
|
|
.recalc_rate = twl6040_pdmclk_recalc_rate,
|
|
};
|
|
|
|
static const struct clk_init_data twl6040_pdmclk_init = {
|
|
.name = "pdmclk",
|
|
.ops = &twl6040_pdmclk_ops,
|
|
.flags = CLK_GET_RATE_NOCACHE,
|
|
};
|
|
|
|
static int twl6040_pdmclk_probe(struct platform_device *pdev)
|
|
{
|
|
struct twl6040 *twl6040 = dev_get_drvdata(pdev->dev.parent);
|
|
struct twl6040_pdmclk *clkdata;
|
|
int ret;
|
|
|
|
clkdata = devm_kzalloc(&pdev->dev, sizeof(*clkdata), GFP_KERNEL);
|
|
if (!clkdata)
|
|
return -ENOMEM;
|
|
|
|
clkdata->dev = &pdev->dev;
|
|
clkdata->twl6040 = twl6040;
|
|
|
|
clkdata->pdmclk_hw.init = &twl6040_pdmclk_init;
|
|
ret = devm_clk_hw_register(&pdev->dev, &clkdata->pdmclk_hw);
|
|
if (ret)
|
|
return ret;
|
|
|
|
platform_set_drvdata(pdev, clkdata);
|
|
|
|
return of_clk_add_hw_provider(pdev->dev.parent->of_node,
|
|
of_clk_hw_simple_get,
|
|
&clkdata->pdmclk_hw);
|
|
}
|
|
|
|
static struct platform_driver twl6040_pdmclk_driver = {
|
|
.driver = {
|
|
.name = "twl6040-pdmclk",
|
|
},
|
|
.probe = twl6040_pdmclk_probe,
|
|
};
|
|
|
|
module_platform_driver(twl6040_pdmclk_driver);
|
|
|
|
MODULE_DESCRIPTION("TWL6040 clock driver for McPDM functional clock");
|
|
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
|
|
MODULE_ALIAS("platform:twl6040-pdmclk");
|
|
MODULE_LICENSE("GPL");
|