98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* Clock driver for TI Davinci PSC controllers
|
||
|
|
*
|
||
|
|
* Copyright (C) 2018 David Lechner <david@lechnology.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __CLK_DAVINCI_PSC_H__
|
||
|
|
#define __CLK_DAVINCI_PSC_H__
|
||
|
|
|
||
|
|
#include <linux/clk-provider.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
/* PSC quirk flags */
|
||
|
|
#define LPSC_ALWAYS_ENABLED BIT(0) /* never disable this clock */
|
||
|
|
#define LPSC_SET_RATE_PARENT BIT(1) /* propagate set_rate to parent clock */
|
||
|
|
#define LPSC_FORCE BIT(2) /* requires MDCTL FORCE bit */
|
||
|
|
#define LPSC_LOCAL_RESET BIT(3) /* acts as reset provider */
|
||
|
|
|
||
|
|
struct davinci_lpsc_clkdev_info {
|
||
|
|
const char *con_id;
|
||
|
|
const char *dev_id;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define LPSC_CLKDEV(c, d) { \
|
||
|
|
.con_id = (c), \
|
||
|
|
.dev_id = (d) \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define LPSC_CLKDEV1(n, c, d) \
|
||
|
|
static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
|
||
|
|
LPSC_CLKDEV((c), (d)), \
|
||
|
|
{ } \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define LPSC_CLKDEV2(n, c1, d1, c2, d2) \
|
||
|
|
static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
|
||
|
|
LPSC_CLKDEV((c1), (d1)), \
|
||
|
|
LPSC_CLKDEV((c2), (d2)), \
|
||
|
|
{ } \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define LPSC_CLKDEV3(n, c1, d1, c2, d2, c3, d3) \
|
||
|
|
static const struct davinci_lpsc_clkdev_info n[] __initconst = { \
|
||
|
|
LPSC_CLKDEV((c1), (d1)), \
|
||
|
|
LPSC_CLKDEV((c2), (d2)), \
|
||
|
|
LPSC_CLKDEV((c3), (d3)), \
|
||
|
|
{ } \
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* davinci_lpsc_clk_info - LPSC module-specific clock information
|
||
|
|
* @name: the clock name
|
||
|
|
* @parent: the parent clock name
|
||
|
|
* @cdevs: optional array of clkdev lookup table info
|
||
|
|
* @md: the local module domain (LPSC id)
|
||
|
|
* @pd: the power domain id
|
||
|
|
* @flags: bitmask of LPSC_* flags
|
||
|
|
*/
|
||
|
|
struct davinci_lpsc_clk_info {
|
||
|
|
const char *name;
|
||
|
|
const char *parent;
|
||
|
|
const struct davinci_lpsc_clkdev_info *cdevs;
|
||
|
|
u32 md;
|
||
|
|
u32 pd;
|
||
|
|
unsigned long flags;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define LPSC(m, d, n, p, c, f) \
|
||
|
|
{ \
|
||
|
|
.name = #n, \
|
||
|
|
.parent = #p, \
|
||
|
|
.cdevs = (c), \
|
||
|
|
.md = (m), \
|
||
|
|
.pd = (d), \
|
||
|
|
.flags = (f), \
|
||
|
|
}
|
||
|
|
|
||
|
|
int davinci_psc_register_clocks(struct device *dev,
|
||
|
|
const struct davinci_lpsc_clk_info *info,
|
||
|
|
u8 num_clks,
|
||
|
|
void __iomem *base);
|
||
|
|
|
||
|
|
int of_davinci_psc_clk_init(struct device *dev,
|
||
|
|
const struct davinci_lpsc_clk_info *info,
|
||
|
|
u8 num_clks,
|
||
|
|
void __iomem *base);
|
||
|
|
|
||
|
|
/* Device-specific data */
|
||
|
|
|
||
|
|
struct davinci_psc_init_data {
|
||
|
|
struct clk_bulk_data *parent_clks;
|
||
|
|
int num_parent_clks;
|
||
|
|
int (*psc_init)(struct device *dev, void __iomem *base);
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* __CLK_DAVINCI_PSC_H__ */
|