ep93xx: clock: convert in-place to COMMON_CLK

Converted in-place without moving file to drivers/clk.

tested on ts7250 (EP9302).

Only setting rate and change parent tested for, as they
are missing on ts7250:
- video
- I2S
- ADC/KEYPAD
- PWM

Only video and I2S clock are interesting, as they are
GATE + double DIV + MUX, all other are pretty much
common but require ep93xx_syscon_swlocked_write to set
registers.
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Link: https://lore.kernel.org/r/20211018103105.146380-3-alexander.sverdlin@gmail.com'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig

@@ -347,7 +347,7 @@ config ARCH_EP93XX
 	select CLKSRC_MMIO
 	select CPU_ARM920T
 	select GPIOLIB
-	select HAVE_LEGACY_CLK
+	select COMMON_CLK
 	help
 	  This enables support for the Cirrus EP93xx series of CPUs.
 

arch/arm/mach-ep93xx/core.c

@@ -214,7 +214,7 @@ static int ep93xx_ohci_power_on(struct platform_device *pdev)
 			return PTR_ERR(ep93xx_ohci_host_clock);
 	}
 
-	return clk_enable(ep93xx_ohci_host_clock);
+	return clk_prepare_enable(ep93xx_ohci_host_clock);
 }
 
 static void ep93xx_ohci_power_off(struct platform_device *pdev)

arch/arm/mach-ep93xx/soc.h

@@ -111,19 +111,19 @@
 #define EP93XX_SYSCON_PWRCNT		EP93XX_SYSCON_REG(0x04)
 #define EP93XX_SYSCON_PWRCNT_FIR_EN	(1<<31)
 #define EP93XX_SYSCON_PWRCNT_UARTBAUD	(1<<29)
-#define EP93XX_SYSCON_PWRCNT_USH_EN	(1<<28)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2M1	(1<<27)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2M0	(1<<26)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P8	(1<<25)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P9	(1<<24)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P6	(1<<23)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P7	(1<<22)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P4	(1<<21)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P5	(1<<20)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P2	(1<<19)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P3	(1<<18)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P0	(1<<17)
-#define EP93XX_SYSCON_PWRCNT_DMA_M2P1	(1<<16)
+#define EP93XX_SYSCON_PWRCNT_USH_EN	28
+#define EP93XX_SYSCON_PWRCNT_DMA_M2M1	27
+#define EP93XX_SYSCON_PWRCNT_DMA_M2M0	26
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P8	25
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P9	24
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P6	23
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P7	22
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P4	21
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P5	20
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P2	19
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P3	18
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P0	17
+#define EP93XX_SYSCON_PWRCNT_DMA_M2P1	16
 #define EP93XX_SYSCON_HALT		EP93XX_SYSCON_REG(0x08)
 #define EP93XX_SYSCON_STANDBY		EP93XX_SYSCON_REG(0x0c)
 #define EP93XX_SYSCON_CLKSET1		EP93XX_SYSCON_REG(0x20)
@@ -139,13 +139,13 @@
 #define EP93XX_SYSCON_DEVCFG_GONK	(1<<27)
 #define EP93XX_SYSCON_DEVCFG_TONG	(1<<26)
 #define EP93XX_SYSCON_DEVCFG_MONG	(1<<25)
-#define EP93XX_SYSCON_DEVCFG_U3EN	(1<<24)
+#define EP93XX_SYSCON_DEVCFG_U3EN	24
 #define EP93XX_SYSCON_DEVCFG_CPENA	(1<<23)
 #define EP93XX_SYSCON_DEVCFG_A2ONG	(1<<22)
 #define EP93XX_SYSCON_DEVCFG_A1ONG	(1<<21)
-#define EP93XX_SYSCON_DEVCFG_U2EN	(1<<20)
+#define EP93XX_SYSCON_DEVCFG_U2EN	20
 #define EP93XX_SYSCON_DEVCFG_EXVC	(1<<19)
-#define EP93XX_SYSCON_DEVCFG_U1EN	(1<<18)
+#define EP93XX_SYSCON_DEVCFG_U1EN	18
 #define EP93XX_SYSCON_DEVCFG_TIN	(1<<17)
 #define EP93XX_SYSCON_DEVCFG_HC3IN	(1<<15)
 #define EP93XX_SYSCON_DEVCFG_HC3EN	(1<<14)
@@ -163,12 +163,12 @@
 #define EP93XX_SYSCON_DEVCFG_KEYS	(1<<1)
 #define EP93XX_SYSCON_DEVCFG_SHENA	(1<<0)
 #define EP93XX_SYSCON_VIDCLKDIV		EP93XX_SYSCON_REG(0x84)
-#define EP93XX_SYSCON_CLKDIV_ENABLE	(1<<15)
+#define EP93XX_SYSCON_CLKDIV_ENABLE	15
 #define EP93XX_SYSCON_CLKDIV_ESEL	(1<<14)
 #define EP93XX_SYSCON_CLKDIV_PSEL	(1<<13)
 #define EP93XX_SYSCON_CLKDIV_PDIV_SHIFT	8
 #define EP93XX_SYSCON_I2SCLKDIV		EP93XX_SYSCON_REG(0x8c)
-#define EP93XX_SYSCON_I2SCLKDIV_SENA	(1<<31)
+#define EP93XX_SYSCON_I2SCLKDIV_SENA	31
 #define EP93XX_SYSCON_I2SCLKDIV_ORIDE   (1<<29)
 #define EP93XX_SYSCON_I2SCLKDIV_SPOL	(1<<19)
 #define EP93XX_I2SCLKDIV_SDIV		(1 << 16)
@@ -177,9 +177,9 @@
 #define EP93XX_I2SCLKDIV_LRDIV128	(2 << 17)
 #define EP93XX_I2SCLKDIV_LRDIV_MASK	(3 << 17)
 #define EP93XX_SYSCON_KEYTCHCLKDIV	EP93XX_SYSCON_REG(0x90)
-#define EP93XX_SYSCON_KEYTCHCLKDIV_TSEN	(1<<31)
-#define EP93XX_SYSCON_KEYTCHCLKDIV_ADIV	(1<<16)
-#define EP93XX_SYSCON_KEYTCHCLKDIV_KEN	(1<<15)
+#define EP93XX_SYSCON_KEYTCHCLKDIV_TSEN	31
+#define EP93XX_SYSCON_KEYTCHCLKDIV_ADIV	16
+#define EP93XX_SYSCON_KEYTCHCLKDIV_KEN	15
 #define EP93XX_SYSCON_KEYTCHCLKDIV_KDIV	(1<<0)
 #define EP93XX_SYSCON_SYSCFG		EP93XX_SYSCON_REG(0x9c)
 #define EP93XX_SYSCON_SYSCFG_REV_MASK	(0xf0000000)