MIPS, clk: move jz4740 UDC auto suspend functions to jz4740-cgu

The jz4740-cgu driver already has access to the CGU, so it makes sense
to move the few remaining accesses to the CGU from arch/mips/jz4740
there too. Move the jz4740_clock_udc_{dis,en}able_auto_suspend functions
there for such consistency.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10154/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/jz4740/clock.c

@@ -33,7 +33,6 @@
 
 #define JZ_CLOCK_GATE_UART0	BIT(0)
 #define JZ_CLOCK_GATE_TCU	BIT(1)
-#define JZ_CLOCK_GATE_UDC	BIT(11)
 #define JZ_CLOCK_GATE_DMAC	BIT(12)
 
 #define JZ_CLOCK_PLL_STABLE		BIT(10)
@@ -64,18 +63,6 @@ static void jz_clk_reg_clear_bits(int reg, uint32_t mask)
 	writel(val, jz_clock_base + reg);
 }
 
-void jz4740_clock_udc_disable_auto_suspend(void)
-{
-	jz_clk_reg_clear_bits(JZ_REG_CLOCK_GATE, JZ_CLOCK_GATE_UDC);
-}
-EXPORT_SYMBOL_GPL(jz4740_clock_udc_disable_auto_suspend);
-
-void jz4740_clock_udc_enable_auto_suspend(void)
-{
-	jz_clk_reg_set_bits(JZ_REG_CLOCK_GATE, JZ_CLOCK_GATE_UDC);
-}
-EXPORT_SYMBOL_GPL(jz4740_clock_udc_enable_auto_suspend);
-
 void jz4740_clock_suspend(void)
 {
 	jz_clk_reg_set_bits(JZ_REG_CLOCK_GATE,

drivers/clk/ingenic/jz4740-cgu.c

@@ -26,6 +26,7 @@
 #define CGU_REG_CPCCR		0x00
 #define CGU_REG_LCR		0x04
 #define CGU_REG_CPPCR		0x10
+#define CGU_REG_CLKGR		0x20
 #define CGU_REG_SCR		0x24
 #define CGU_REG_I2SCDR		0x60
 #define CGU_REG_LPCDR		0x64
@@ -47,6 +48,9 @@
 /* bits within the LCR register */
 #define LCR_SLEEP		(1 << 0)
 
+/* bits within the CLKGR register */
+#define CLKGR_UDC		(1 << 11)
+
 static struct ingenic_cgu *cgu;
 
 static const s8 pll_od_encoding[4] = {
@@ -242,3 +246,21 @@ void jz4740_clock_set_wait_mode(enum jz4740_wait_mode mode)
 
 	writel(lcr, cgu->base + CGU_REG_LCR);
 }
+
+void jz4740_clock_udc_disable_auto_suspend(void)
+{
+	uint32_t clkgr = readl(cgu->base + CGU_REG_CLKGR);
+
+	clkgr &= ~CLKGR_UDC;
+	writel(clkgr, cgu->base + CGU_REG_CLKGR);
+}
+EXPORT_SYMBOL_GPL(jz4740_clock_udc_disable_auto_suspend);
+
+void jz4740_clock_udc_enable_auto_suspend(void)
+{
+	uint32_t clkgr = readl(cgu->base + CGU_REG_CLKGR);
+
+	clkgr |= CLKGR_UDC;
+	writel(clkgr, cgu->base + CGU_REG_CLKGR);
+}
+EXPORT_SYMBOL_GPL(jz4740_clock_udc_enable_auto_suspend);