Commit 2cce09eb authored by Linus Walleij's avatar Linus Walleij Committed by Lee Jones
Browse files

mfd: dbx500-prcmu: Drop DSI pll clock functions 



The DSI PLLs are handled by the generic clock framework
since ages, this code is completely unused and misleading.
Delete it.

Cc: Stephan Gerhold <stephan@gerhold.net>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent f4181092

drivers/mfd/db8500-prcmu.c

+0 −66
Original line number Diff line number Diff line
@@ -542,72 +542,6 @@ static struct dsiescclk dsiescclk[3] = { 
	}

};





/*

* Used by MCDE to setup all necessary PRCMU registers

*/

#define PRCMU_RESET_DSIPLL		0x00004000

#define PRCMU_UNCLAMP_DSIPLL		0x00400800



#define PRCMU_CLK_PLL_DIV_SHIFT		0

#define PRCMU_CLK_PLL_SW_SHIFT		5

#define PRCMU_CLK_38			(1 << 9)

#define PRCMU_CLK_38_SRC		(1 << 10)

#define PRCMU_CLK_38_DIV		(1 << 11)



/* D=101, N=1, R=4, SELDIV2=0 */

#define PRCMU_PLLDSI_FREQ_SETTING	0x00040165



#define PRCMU_ENABLE_PLLDSI		0x00000001

#define PRCMU_DISABLE_PLLDSI		0x00000000

#define PRCMU_RELEASE_RESET_DSS		0x0000400C

#define PRCMU_DSI_PLLOUT_SEL_SETTING	0x00000202

/* ESC clk, div0=1, div1=1, div2=3 */

#define PRCMU_ENABLE_ESCAPE_CLOCK_DIV	0x07030101

#define PRCMU_DISABLE_ESCAPE_CLOCK_DIV	0x00030101

#define PRCMU_DSI_RESET_SW		0x00000007



#define PRCMU_PLLDSI_LOCKP_LOCKED	0x3



int db8500_prcmu_enable_dsipll(void)

{

	int i;



	/* Clear DSIPLL_RESETN */

	writel(PRCMU_RESET_DSIPLL, PRCM_APE_RESETN_CLR);

	/* Unclamp DSIPLL in/out */

	writel(PRCMU_UNCLAMP_DSIPLL, PRCM_MMIP_LS_CLAMP_CLR);



	/* Set DSI PLL FREQ */

	writel(PRCMU_PLLDSI_FREQ_SETTING, PRCM_PLLDSI_FREQ);

	writel(PRCMU_DSI_PLLOUT_SEL_SETTING, PRCM_DSI_PLLOUT_SEL);

	/* Enable Escape clocks */

	writel(PRCMU_ENABLE_ESCAPE_CLOCK_DIV, PRCM_DSITVCLK_DIV);



	/* Start DSI PLL */

	writel(PRCMU_ENABLE_PLLDSI, PRCM_PLLDSI_ENABLE);

	/* Reset DSI PLL */

	writel(PRCMU_DSI_RESET_SW, PRCM_DSI_SW_RESET);

	for (i = 0; i < 10; i++) {

		if ((readl(PRCM_PLLDSI_LOCKP) & PRCMU_PLLDSI_LOCKP_LOCKED)

					== PRCMU_PLLDSI_LOCKP_LOCKED)

			break;

		udelay(100);

	}

	/* Set DSIPLL_RESETN */

	writel(PRCMU_RESET_DSIPLL, PRCM_APE_RESETN_SET);

	return 0;

}



int db8500_prcmu_disable_dsipll(void)

{

	/* Disable dsi pll */

	writel(PRCMU_DISABLE_PLLDSI, PRCM_PLLDSI_ENABLE);

	/* Disable  escapeclock */

	writel(PRCMU_DISABLE_ESCAPE_CLOCK_DIV, PRCM_DSITVCLK_DIV);

	return 0;

}



u32 db8500_prcmu_read(unsigned int reg)

{

	return readl(prcmu_base + reg);

include/linux/mfd/db8500-prcmu.h

+0 −12
Original line number Diff line number Diff line
@@ -525,8 +525,6 @@ u8 db8500_prcmu_get_power_state_result(void); 
void db8500_prcmu_enable_wakeups(u32 wakeups);

int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state);

int db8500_prcmu_request_clock(u8 clock, bool enable);

int db8500_prcmu_disable_dsipll(void);

int db8500_prcmu_enable_dsipll(void);

void db8500_prcmu_config_abb_event_readout(u32 abb_events);

void db8500_prcmu_get_abb_event_buffer(void __iomem **buf);

int db8500_prcmu_config_esram0_deep_sleep(u8 state);
@@ -681,16 +679,6 @@ static inline int db8500_prcmu_request_clock(u8 clock, bool enable) 
	return 0;

}



static inline int db8500_prcmu_disable_dsipll(void)

{

	return 0;

}



static inline int db8500_prcmu_enable_dsipll(void)

{

	return 0;

}



static inline int db8500_prcmu_config_esram0_deep_sleep(u8 state)

{

	return 0;

include/linux/mfd/dbx500-prcmu.h

+0 −20
Original line number Diff line number Diff line
@@ -321,16 +321,6 @@ static inline bool prcmu_is_ac_wake_requested(void) 
	return db8500_prcmu_is_ac_wake_requested();

}



static inline int prcmu_disable_dsipll(void)

{

	return db8500_prcmu_disable_dsipll();

}



static inline int prcmu_enable_dsipll(void)

{

	return db8500_prcmu_enable_dsipll();

}



static inline int prcmu_config_esram0_deep_sleep(u8 state)

{

	return db8500_prcmu_config_esram0_deep_sleep(state);
@@ -506,16 +496,6 @@ static inline bool prcmu_is_ac_wake_requested(void) 
	return false;

}



static inline int prcmu_disable_dsipll(void)

{

	return 0;

}



static inline int prcmu_enable_dsipll(void)

{

	return 0;

}



static inline int prcmu_config_esram0_deep_sleep(u8 state)

{

	return 0;