ARM: imx: define an enum for gpt timer device type

Define an enum for gpt timer device type in include/soc/imx/timer.h to
tell the gpt block differences among SoCs. Update non-DT users (clock
drivers) to pass the device type.

As we now have include/soc/imx/timer.h, the declaration of
mxc_timer_init() is moved into there as the best fit.

Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/mach-imx/time.c

···
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
+#include <soc/imx/timer.h>
 
 #include <asm/mach/time.h>
 
···
 static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED;
 
 struct imx_timer {
+	enum imx_gpt_type type;
 	void __iomem *base;
 	int irq;
 	struct clk *clk_per;
···
 	setup_irq(imxtm->irq, &mxc_timer_irq);
 }
 
-void __init mxc_timer_init(unsigned long pbase, int irq)
+void __init mxc_timer_init(unsigned long pbase, int irq, enum imx_gpt_type type)
 {
 	struct imx_timer *imxtm;
 
···
 
 	imxtm->base = ioremap(pbase, SZ_4K);
 	BUG_ON(!imxtm->base);
+
+	imxtm->type = type;
 
 	_mxc_timer_init(imxtm);
 }

drivers/clk/imx/clk-imx1.c

···
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <dt-bindings/clock/imx1-clock.h>
+#include <soc/imx/timer.h>
 #include <asm/irq.h>
 
 #include "clk.h"
···
 	clk_register_clkdev(clk[IMX1_CLK_DUMMY], "ipg", "imx1-fb.0");
 	clk_register_clkdev(clk[IMX1_CLK_DUMMY], "ahb", "imx1-fb.0");
 
-	mxc_timer_init(MX1_TIM1_BASE_ADDR, MX1_TIM1_INT);
+	mxc_timer_init(MX1_TIM1_BASE_ADDR, MX1_TIM1_INT, GPT_TYPE_IMX1);
 
 	return 0;
 }

drivers/clk/imx/clk-imx21.c

···
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <dt-bindings/clock/imx21-clock.h>
+#include <soc/imx/timer.h>
 #include <asm/irq.h>
 
 #include "clk.h"
···
 	clk_register_clkdev(clk[IMX21_CLK_I2C_GATE], NULL, "imx21-i2c.0");
 	clk_register_clkdev(clk[IMX21_CLK_OWIRE_GATE], NULL, "mxc_w1.0");
 
-	mxc_timer_init(MX21_GPT1_BASE_ADDR, MX21_INT_GPT1);
+	mxc_timer_init(MX21_GPT1_BASE_ADDR, MX21_INT_GPT1, GPT_TYPE_IMX21);
 
 	return 0;
 }

drivers/clk/imx/clk-imx27.c

···
 #include <linux/of_address.h>
 #include <dt-bindings/clock/imx27-clock.h>
 #include <soc/imx/revision.h>
+#include <soc/imx/timer.h>
 #include <asm/irq.h>
 
 #include "clk.h"
···
 	clk_register_clkdev(clk[IMX27_CLK_EMMA_AHB_GATE], "ahb", "m2m-emmaprp.0");
 	clk_register_clkdev(clk[IMX27_CLK_EMMA_IPG_GATE], "ipg", "m2m-emmaprp.0");
 
-	mxc_timer_init(MX27_GPT1_BASE_ADDR, MX27_INT_GPT1);
+	mxc_timer_init(MX27_GPT1_BASE_ADDR, MX27_INT_GPT1, GPT_TYPE_IMX21);
 
 	return 0;
 }

drivers/clk/imx/clk-imx31.c

···
 #include <linux/err.h>
 #include <linux/of.h>
 #include <soc/imx/revision.h>
+#include <soc/imx/timer.h>
 #include <asm/irq.h>
 
 #include "clk.h"
···
 	mx31_revision();
 	clk_disable_unprepare(clk[iim_gate]);
 
-	mxc_timer_init(MX31_GPT1_BASE_ADDR, MX31_INT_GPT);
+	mxc_timer_init(MX31_GPT1_BASE_ADDR, MX31_INT_GPT, GPT_TYPE_IMX31);
 
 	return 0;
 }

drivers/clk/imx/clk-imx35.c

···
 #include <linux/of.h>
 #include <linux/err.h>
 #include <soc/imx/revision.h>
+#include <soc/imx/timer.h>
 #include <asm/irq.h>
 
 #include "clk.h"
···
 
 	imx_print_silicon_rev("i.MX35", mx35_revision());
 
-	mxc_timer_init(MX35_GPT1_BASE_ADDR, MX35_INT_GPT);
+	mxc_timer_init(MX35_GPT1_BASE_ADDR, MX35_INT_GPT, GPT_TYPE_IMX31);
 
 	return 0;
 }

drivers/clk/imx/clk.h

···
 
 extern spinlock_t imx_ccm_lock;
 
-/*
- * This is a stop-gap solution for clock drivers like imx1/imx21 which call
- * mxc_timer_init() to initialize timer for non-DT boot.  It can be removed
- * when these legacy non-DT support is converted or dropped.
- */
-void mxc_timer_init(unsigned long pbase, int irq);
-
 void imx_check_clocks(struct clk *clks[], unsigned int count);
 
 extern void imx_cscmr1_fixup(u32 *val);

include/soc/imx/timer.h

···
+/*
+ * Copyright 2015 Linaro Ltd.
+ *
+ * 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 __SOC_IMX_TIMER_H__
+#define __SOC_IMX_TIMER_H__
+
+enum imx_gpt_type {
+	GPT_TYPE_IMX1,		/* i.MX1 */
+	GPT_TYPE_IMX21,		/* i.MX21/27 */
+	GPT_TYPE_IMX31,		/* i.MX31/35/25/37/51/6Q */
+	GPT_TYPE_IMX6DL,	/* i.MX6DL/SX/SL */
+};
+
+/*
+ * This is a stop-gap solution for clock drivers like imx1/imx21 which call
+ * mxc_timer_init() to initialize timer for non-DT boot.  It can be removed
+ * when these legacy non-DT support is converted or dropped.
+ */
+void mxc_timer_init(unsigned long pbase, int irq, enum imx_gpt_type type);
+
+#endif  /* __SOC_IMX_TIMER_H__ */