[ARM] OMAP: Add CSI2 clock struct for handling it with clock API

Add CSI2 clock struct for handling it with clock API when TI PM is disabled.

linux-omap source commit is 8b20f4498928459276bd3366e3381ad595d23432.
Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-omap2/clock34xx.c

@@ -206,6 +206,7 @@ static struct omap_clk omap34xx_clks[] = {
 	CLK(NULL,	"dss_ick",	&dss_ick,	CK_343X),
 	CLK(NULL,	"cam_mclk",	&cam_mclk,	CK_343X),
 	CLK(NULL,	"cam_ick",	&cam_ick,	CK_343X),
+	CLK(NULL,	"csi2_96m_fck",	&csi2_96m_fck,	CK_343X),
 	CLK(NULL,	"usbhost_120m_fck", &usbhost_120m_fck, CK_3430ES2),
 	CLK(NULL,	"usbhost_48m_fck", &usbhost_48m_fck, CK_3430ES2),
 	CLK(NULL,	"usbhost_ick",	&usbhost_ick,	CK_3430ES2),

arch/arm/mach-omap2/clock34xx.h

@@ -2198,6 +2198,17 @@ static struct clk cam_ick = {
 	.recalc		= &followparent_recalc,
 };
 
+static struct clk csi2_96m_fck = {
+	.name		= "csi2_96m_fck",
+	.ops		= &clkops_omap2_dflt_wait,
+	.parent		= &core_96m_fck,
+	.init		= &omap2_init_clk_clkdm,
+	.enable_reg	= OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_FCLKEN),
+	.enable_bit	= OMAP3430_EN_CSI2_SHIFT,
+	.clkdm_name	= "cam_clkdm",
+	.recalc		= &followparent_recalc,
+};
+
 /* USBHOST - 3430ES2 only */
 
 static struct clk usbhost_120m_fck = {

arch/arm/mach-omap2/cm-regbits-34xx.h

@@ -524,6 +524,8 @@
 #define OMAP3430_CLKACTIVITY_DSS_MASK			(1 << 0)
 
 /* CM_FCLKEN_CAM specific bits */
+#define OMAP3430_EN_CSI2				(1 << 1)
+#define OMAP3430_EN_CSI2_SHIFT				1
 
 /* CM_ICLKEN_CAM specific bits */