37 lines
955 B
C
37 lines
955 B
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/regmap.h>
|
||
|
|
#include <linux/mfd/syscon.h>
|
||
|
|
#include <linux/bitops.h>
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include "pl111_nomadik.h"
|
||
|
|
|
||
|
|
#define PMU_CTRL_OFFSET 0x0000
|
||
|
|
#define PMU_CTRL_LCDNDIF BIT(26)
|
||
|
|
|
||
|
|
void pl111_nomadik_init(struct device *dev)
|
||
|
|
{
|
||
|
|
struct regmap *pmu_regmap;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Just bail out of this is not found, we could be running
|
||
|
|
* multiplatform on something else than Nomadik.
|
||
|
|
*/
|
||
|
|
pmu_regmap =
|
||
|
|
syscon_regmap_lookup_by_compatible("stericsson,nomadik-pmu");
|
||
|
|
if (IS_ERR(pmu_regmap))
|
||
|
|
return;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This bit in the PMU controller multiplexes the two graphics
|
||
|
|
* blocks found in the Nomadik STn8815. The other one is called
|
||
|
|
* MDIF (Master Display Interface) and gets muxed out here.
|
||
|
|
*/
|
||
|
|
regmap_update_bits(pmu_regmap,
|
||
|
|
PMU_CTRL_OFFSET,
|
||
|
|
PMU_CTRL_LCDNDIF,
|
||
|
|
0);
|
||
|
|
dev_info(dev, "set Nomadik PMU mux to CLCD mode\n");
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(pl111_nomadik_init);
|