[ARM PATCH] 2166/1: OMAP update 5/8: Change OMAP to use generic clock framework

Patch from Tony Lindgren

This patch by Tuukka Tikkanen changes OMAP to use ARM generic
clock framework instead of older OMAP specific clock framework.
Patch replaces old clocks.c with new clock.[ch].

Signed-off-by: Tony Lindgren

arch/arm/mach-omap/clock.h

+/*
+ *  linux/arch/arm/mach-omap/clock.h
+ *
+ *  Copyright (C) 2004 Nokia corporation
+ *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
+ *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ARCH_ARM_OMAP_CLOCK_H
+#define __ARCH_ARM_OMAP_CLOCK_H
+
+struct module;
+
+struct clk {
+	struct list_head	node;
+	struct module		*owner;
+	const char		*name;
+	struct clk		*parent;
+	unsigned long		rate;
+	__s8			usecount;
+	__u8			flags;
+	__u32			enable_reg;
+	__u8			enable_bit;
+	__u8			rate_offset;
+	void			(*recalc)(struct clk *);
+	int			(*set_rate)(unsigned long);
+	long			(*round_rate)(unsigned long);
+};
+
+
+struct mpu_rate {
+	unsigned long		rate;
+	unsigned long		xtal;
+	unsigned long		pll_rate;
+	__u16			ckctl_val;
+	__u16			dpllctl_val;
+};
+
+
+/* Clock flags */
+#define RATE_CKCTL		1
+#define RATE_FIXED		2
+#define RATE_PROPAGATES		4
+#define VIRTUAL_CLOCK		8
+#define ALWAYS_ENABLED		16
+#define ENABLE_REG_32BIT	32
+#define DOES_NOT_EXIST_ON_1510	64
+#define DOES_NOT_EXIST_ON_1610	128 /* Including 1710 */
+
+/* ARM_CKCTL bit shifts */
+#define CKCTL_PERDIV_OFFSET	0
+#define CKCTL_LCDDIV_OFFSET	2
+#define CKCTL_ARMDIV_OFFSET	4
+#define CKCTL_DSPDIV_OFFSET	6
+#define CKCTL_TCDIV_OFFSET	8
+#define CKCTL_DSPMMUDIV_OFFSET	10
+/*#define ARM_TIMXO		12*/
+#define EN_DSPCK		13
+/*#define ARM_INTHCK_SEL	14*/ /* Divide-by-2 for mpu inth_ck */
+
+/* ARM_IDLECT1 bit shifts */
+/*#define IDLWDT_ARM	0*/
+/*#define IDLXORP_ARM	1*/
+/*#define IDLPER_ARM	2*/
+/*#define IDLLCD_ARM	3*/
+/*#define IDLLB_ARM	4*/
+/*#define IDLHSAB_ARM	5*/
+/*#define IDLIF_ARM	6*/
+/*#define IDLDPLL_ARM	7*/
+/*#define IDLAPI_ARM	8*/
+/*#define IDLTIM_ARM	9*/
+/*#define SETARM_IDLE	11*/
+
+/* ARM_IDLECT2 bit shifts */
+#define EN_WDTCK	0
+#define EN_XORPCK	1
+#define EN_PERCK	2
+#define EN_LCDCK	3
+#define EN_LBCK		4 /* Not on 1610/1710 */
+/*#define EN_HSABCK	5*/
+#define EN_APICK	6
+#define EN_TIMCK	7
+#define DMACK_REQ	8
+#define EN_GPIOCK	9 /* Not on 1610/1710 */
+/*#define EN_LBFREECK	10*/
+#define EN_CKOUT_ARM	11
+
+/* ARM_IDLECT3 bit shifts */
+#define EN_OCPI_CK	0
+#define EN_TC1_CK	2
+#define EN_TC2_CK	4
+
+/* Various register defines for clock controls scattered around OMAP chip */
+#define USB_MCLK_EN		4	/* In ULPD_CLKC_CTRL */
+#define USB_HOST_HHC_UHOST_EN	9	/* In MOD_CONF_CTRL_0 */
+
+
+int clk_register(struct clk *clk);
+void clk_unregister(struct clk *clk);
+int clk_init(void);
+
+#endif