linux-kernel - [PATCH 1/2] mfd: dbx500-prcmu: Drop set_display

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Date:   Sat, 28 Dec 2019 23:26:14 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     lee.jones@...aro.org, linux-kernel@...r.kernel.org
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Stephan Gerhold <stephan@...hold.net>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 1/2] mfd: dbx500-prcmu: Drop set_display_clocks()

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

Cc: Stephan Gerhold <stephan@...hold.net>
Cc: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/mfd/db8500-prcmu.c       | 30 ------------------------------
 include/linux/mfd/db8500-prcmu.h |  6 ------
 include/linux/mfd/dbx500-prcmu.h | 10 ----------
 3 files changed, 46 deletions(-)

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 26d967a1a046..5f0cfeec8b6a 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -555,14 +555,6 @@ static struct dsiescclk dsiescclk[3] = {
 #define PRCMU_CLK_38_SRC		(1 << 10)
 #define PRCMU_CLK_38_DIV		(1 << 11)
 
-/* PLLDIV=12, PLLSW=4 (PLLDDR) */
-#define PRCMU_DSI_CLOCK_SETTING		0x0000008C
-
-/* DPI 50000000 Hz */
-#define PRCMU_DPI_CLOCK_SETTING		((1 << PRCMU_CLK_PLL_SW_SHIFT) | \
-					  (16 << PRCMU_CLK_PLL_DIV_SHIFT))
-#define PRCMU_DSI_LP_CLOCK_SETTING	0x00000E00
-
 /* D=101, N=1, R=4, SELDIV2=0 */
 #define PRCMU_PLLDSI_FREQ_SETTING	0x00040165
 
@@ -616,28 +608,6 @@ int db8500_prcmu_disable_dsipll(void)
 	return 0;
 }
 
-int db8500_prcmu_set_display_clocks(void)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&clk_mgt_lock, flags);
-
-	/* Grab the HW semaphore. */
-	while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0)
-		cpu_relax();
-
-	writel(PRCMU_DSI_CLOCK_SETTING, prcmu_base + PRCM_HDMICLK_MGT);
-	writel(PRCMU_DSI_LP_CLOCK_SETTING, prcmu_base + PRCM_TVCLK_MGT);
-	writel(PRCMU_DPI_CLOCK_SETTING, prcmu_base + PRCM_LCDCLK_MGT);
-
-	/* Release the HW semaphore. */
-	writel(0, PRCM_SEM);
-
-	spin_unlock_irqrestore(&clk_mgt_lock, flags);
-
-	return 0;
-}
-
 u32 db8500_prcmu_read(unsigned int reg)
 {
 	return readl(prcmu_base + reg);
diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h
index 1fc75d2b4a38..7d0c442e0c25 100644
--- a/include/linux/mfd/db8500-prcmu.h
+++ b/include/linux/mfd/db8500-prcmu.h
@@ -525,7 +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_set_display_clocks(void);
 int db8500_prcmu_disable_dsipll(void);
 int db8500_prcmu_enable_dsipll(void);
 void db8500_prcmu_config_abb_event_readout(u32 abb_events);
@@ -682,11 +681,6 @@ static inline int db8500_prcmu_request_clock(u8 clock, bool enable)
 	return 0;
 }
 
-static inline int db8500_prcmu_set_display_clocks(void)
-{
-	return 0;
-}
-
 static inline int db8500_prcmu_disable_dsipll(void)
 {
 	return 0;
diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
index e2571040c7e8..812b6c3c4ef6 100644
--- a/include/linux/mfd/dbx500-prcmu.h
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -321,11 +321,6 @@ static inline bool prcmu_is_ac_wake_requested(void)
 	return db8500_prcmu_is_ac_wake_requested();
 }
 
-static inline int prcmu_set_display_clocks(void)
-{
-	return db8500_prcmu_set_display_clocks();
-}
-
 static inline int prcmu_disable_dsipll(void)
 {
 	return db8500_prcmu_disable_dsipll();
@@ -511,11 +506,6 @@ static inline bool prcmu_is_ac_wake_requested(void)
 	return false;
 }
 
-static inline int prcmu_set_display_clocks(void)
-{
-	return 0;
-}
-
 static inline int prcmu_disable_dsipll(void)
 {
 	return 0;
-- 
2.21.0