aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r--arch/arm/mach-omap2/Makefile3
-rw-r--r--arch/arm/mach-omap2/clkt2xxx_apll.c120
-rw-r--r--arch/arm/mach-omap2/clock2xxx.c86
-rw-r--r--arch/arm/mach-omap2/clock2xxx.h1
4 files changed, 124 insertions, 86 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 2b58363a8947..825c303f671f 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -12,7 +12,8 @@ clock-common = clock.o clock_common_data.o \
clockdomain.o clkt_dpll.o \
clkt_clksel.o
clock-omap2xxx = clkt2xxx_dpllcore.o \
- clkt2xxx_virt_prcm_set.o
+ clkt2xxx_virt_prcm_set.o \
+ clkt2xxx_apll.o
obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(prcm-common) $(clock-common) \
$(clock-omap2xxx)
diff --git a/arch/arm/mach-omap2/clkt2xxx_apll.c b/arch/arm/mach-omap2/clkt2xxx_apll.c
new file mode 100644
index 000000000000..fc32ff8e790f
--- /dev/null
+++ b/arch/arm/mach-omap2/clkt2xxx_apll.c
@@ -0,0 +1,120 @@
+/*
+ * OMAP2xxx APLL clock control functions
+ *
+ * Copyright (C) 2005-2008 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Contacts:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Paul Walmsley
+ *
+ * Based on earlier work by Tuukka Tikkanen, 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.
+ */
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/clock.h>
+#include <plat/prcm.h>
+
+#include "clock.h"
+#include "clock2xxx.h"
+#include "cm.h"
+#include "cm-regbits-24xx.h"
+
+/* CM_CLKEN_PLL.EN_{54,96}M_PLL options (24XX) */
+#define EN_APLL_STOPPED 0
+#define EN_APLL_LOCKED 3
+
+/* CM_CLKSEL1_PLL.APLLS_CLKIN options (24XX) */
+#define APLLS_CLKIN_19_2MHZ 0
+#define APLLS_CLKIN_13MHZ 2
+#define APLLS_CLKIN_12MHZ 3
+
+/* Private functions */
+
+/* Enable an APLL if off */
+static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask)
+{
+ u32 cval, apll_mask;
+
+ apll_mask = EN_APLL_LOCKED << clk->enable_bit;
+
+ cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
+
+ if ((cval & apll_mask) == apll_mask)
+ return 0; /* apll already enabled */
+
+ cval &= ~apll_mask;
+ cval |= apll_mask;
+ cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
+
+ omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), status_mask,
+ clk->name);
+
+ /*
+ * REVISIT: Should we return an error code if omap2_wait_clock_ready()
+ * fails?
+ */
+ return 0;
+}
+
+static int omap2_clk_apll96_enable(struct clk *clk)
+{
+ return omap2_clk_apll_enable(clk, OMAP24XX_ST_96M_APLL);
+}
+
+static int omap2_clk_apll54_enable(struct clk *clk)
+{
+ return omap2_clk_apll_enable(clk, OMAP24XX_ST_54M_APLL);
+}
+
+/* Stop APLL */
+static void omap2_clk_apll_disable(struct clk *clk)
+{
+ u32 cval;
+
+ cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
+ cval &= ~(EN_APLL_LOCKED << clk->enable_bit);
+ cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
+}
+
+/* Public data */
+
+const struct clkops clkops_apll96 = {
+ .enable = omap2_clk_apll96_enable,
+ .disable = omap2_clk_apll_disable,
+};
+
+const struct clkops clkops_apll54 = {
+ .enable = omap2_clk_apll54_enable,
+ .disable = omap2_clk_apll_disable,
+};
+
+/* Public functions */
+
+u32 omap2xxx_get_apll_clkin(void)
+{
+ u32 aplls, srate = 0;
+
+ aplls = cm_read_mod_reg(PLL_MOD, CM_CLKSEL1);
+ aplls &= OMAP24XX_APLLS_CLKIN_MASK;
+ aplls >>= OMAP24XX_APLLS_CLKIN_SHIFT;
+
+ if (aplls == APLLS_CLKIN_19_2MHZ)
+ srate = 19200000;
+ else if (aplls == APLLS_CLKIN_13MHZ)
+ srate = 13000000;
+ else if (aplls == APLLS_CLKIN_12MHZ)
+ srate = 12000000;
+
+ return srate;
+}
+
diff --git a/arch/arm/mach-omap2/clock2xxx.c b/arch/arm/mach-omap2/clock2xxx.c
index 11d6edb0b32f..88077e746966 100644
--- a/arch/arm/mach-omap2/clock2xxx.c
+++ b/arch/arm/mach-omap2/clock2xxx.c
@@ -44,16 +44,6 @@
#include "cm.h"
#include "cm-regbits-24xx.h"
-
-/* CM_CLKEN_PLL.EN_{54,96}M_PLL options (24XX) */
-#define EN_APLL_STOPPED 0
-#define EN_APLL_LOCKED 3
-
-/* CM_CLKSEL1_PLL.APLLS_CLKIN options (24XX) */
-#define APLLS_CLKIN_19_2MHZ 0
-#define APLLS_CLKIN_13MHZ 2
-#define APLLS_CLKIN_12MHZ 3
-
struct clk *vclk, *sclk, *dclk;
void __iomem *prcm_clksrc_ctrl;
@@ -126,80 +116,6 @@ static void omap2_sys_clk_recalc(struct clk *clk)
}
#endif /* OLD_CK */
-/* Enable an APLL if off */
-static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask)
-{
- u32 cval, apll_mask;
-
- apll_mask = EN_APLL_LOCKED << clk->enable_bit;
-
- cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
-
- if ((cval & apll_mask) == apll_mask)
- return 0; /* apll already enabled */
-
- cval &= ~apll_mask;
- cval |= apll_mask;
- cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
-
- omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), status_mask,
- clk->name);
-
- /*
- * REVISIT: Should we return an error code if omap2_wait_clock_ready()
- * fails?
- */
- return 0;
-}
-
-static int omap2_clk_apll96_enable(struct clk *clk)
-{
- return omap2_clk_apll_enable(clk, OMAP24XX_ST_96M_APLL);
-}
-
-static int omap2_clk_apll54_enable(struct clk *clk)
-{
- return omap2_clk_apll_enable(clk, OMAP24XX_ST_54M_APLL);
-}
-
-/* Stop APLL */
-static void omap2_clk_apll_disable(struct clk *clk)
-{
- u32 cval;
-
- cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
- cval &= ~(EN_APLL_LOCKED << clk->enable_bit);
- cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
-}
-
-const struct clkops clkops_apll96 = {
- .enable = omap2_clk_apll96_enable,
- .disable = omap2_clk_apll_disable,
-};
-
-const struct clkops clkops_apll54 = {
- .enable = omap2_clk_apll54_enable,
- .disable = omap2_clk_apll_disable,
-};
-
-static u32 omap2_get_apll_clkin(void)
-{
- u32 aplls, srate = 0;
-
- aplls = cm_read_mod_reg(PLL_MOD, CM_CLKSEL1);
- aplls &= OMAP24XX_APLLS_CLKIN_MASK;
- aplls >>= OMAP24XX_APLLS_CLKIN_SHIFT;
-
- if (aplls == APLLS_CLKIN_19_2MHZ)
- srate = 19200000;
- else if (aplls == APLLS_CLKIN_13MHZ)
- srate = 13000000;
- else if (aplls == APLLS_CLKIN_12MHZ)
- srate = 12000000;
-
- return srate;
-}
-
static u32 omap2_get_sysclkdiv(void)
{
u32 div;
@@ -213,7 +129,7 @@ static u32 omap2_get_sysclkdiv(void)
unsigned long omap2_osc_clk_recalc(struct clk *clk)
{
- return omap2_get_apll_clkin() * omap2_get_sysclkdiv();
+ return omap2xxx_get_apll_clkin() * omap2_get_sysclkdiv();
}
unsigned long omap2_sys_clk_recalc(struct clk *clk)
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index e35efde4bd80..3f1672e071c2 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -17,6 +17,7 @@ unsigned long omap2_sys_clk_recalc(struct clk *clk);
unsigned long omap2_dpllcore_recalc(struct clk *clk);
int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate);
unsigned long omap2xxx_clk_get_core_rate(struct clk *clk);
+u32 omap2xxx_get_apll_clkin(void);
/* REVISIT: These should be set dynamically for CONFIG_MULTI_OMAP2 */
#ifdef CONFIG_ARCH_OMAP2420
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 16:37:31 +0000