eaw/u-boot
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

clk: at91: pmc: add generic clock ops

Browse Source 
Add generic clock ops to be used by every AT91 PMC driver
built on top of CCF.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
This commit is contained in:
Claudiu Beznea
2020-09-07 17:46:51 +03:00
committed by Eugen Hristev
parent 36a9630fcb
commit 7b7e226739
2 changed files with 73 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
drivers/clk/at91/pmc.c
View File

@@ -5,8 +5,79 @@
*/
#include <asm/io.h>
#include <clk-uclass.h>
#include <common.h>
#include "pmc.h"
static int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args)
{
if (args->args_count != 2) {
debug("AT91: clk: Invalid args_count: %d\n", args->args_count);
return -EINVAL;
}
clk->id = AT91_TO_CLK_ID(args->args[0], args->args[1]);
return 0;
}
static ulong at91_clk_get_rate(struct clk *clk)
{
struct clk *c;
int ret;
ret = clk_get_by_id(clk->id, &c);
if (ret)
return ret;
return clk_get_rate(c);
}
static ulong at91_clk_set_rate(struct clk *clk, ulong rate)
{
struct clk *c;
int ret;
ret = clk_get_by_id(clk->id, &c);
if (ret)
return ret;
return clk_set_rate(c, rate);
}
static int at91_clk_enable(struct clk *clk)
{
struct clk *c;
int ret;
ret = clk_get_by_id(clk->id, &c);
if (ret)
return ret;
return clk_enable(c);
}
static int at91_clk_disable(struct clk *clk)
{
struct clk *c;
int ret;
ret = clk_get_by_id(clk->id, &c);
if (ret)
return ret;
return clk_disable(c);
}
const struct clk_ops at91_clk_ops = {
.of_xlate = at91_clk_of_xlate,
.set_rate = at91_clk_set_rate,
.get_rate = at91_clk_get_rate,
.enable = at91_clk_enable,
.disable = at91_clk_disable,
};
/**
* pmc_read() - read content at address base + off into val
*

2
drivers/clk/at91/pmc.h
View File

@@ -75,6 +75,8 @@ extern const struct clk_programmable_layout at91rm9200_programmable_layout;
extern const struct clk_programmable_layout at91sam9g45_programmable_layout;
extern const struct clk_programmable_layout at91sam9x5_programmable_layout;
extern const struct clk_ops at91_clk_ops;
struct clk *at91_clk_main_rc(void __iomem *reg, const char *name,
const char *parent_name);
struct clk *at91_clk_main_osc(void __iomem *reg, const char *name,