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authorRajendra Nayak <rnayak@ti.com>2010-12-22 04:01:18 +0100
committerPaul Walmsley <paul@pwsan.com>2010-12-22 04:01:18 +0100
commitf327e07b0ef9c60a6018799c9f04de10101d8e5a (patch)
tree4f21b95c3a8f5badb3a1cf69ab75b8edfd1624a6 /arch/arm/mach-omap2/powerdomain44xx.c
parentOMAP: powerdomain: Infrastructure to put arch specific code (diff)
downloadlinux-f327e07b0ef9c60a6018799c9f04de10101d8e5a.tar.xz
linux-f327e07b0ef9c60a6018799c9f04de10101d8e5a.zip
OMAP: powerdomain: Arch specific funcs for state control
Define the following architecture specific funtions for omap2/3/4 .pwrdm_set_next_pwrst .pwrdm_read_next_pwrst .pwrdm_read_pwrst .pwrdm_read_prev_pwrst Convert the platform-independent framework to call these functions. Signed-off-by: Rajendra Nayak <rnayak@ti.com> [paul@pwsan.com: remove remaining static allocations in powerdomains.h file; remove path in file header comments, rearranged Makefile changes] Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoit Cousson <b-cousson@ti.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com> Tested-by: Kevin Hilman <khilman@deeprootsystems.com> Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Tested-by: Rajendra Nayak <rnayak@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain44xx.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain44xx.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain44xx.c b/arch/arm/mach-omap2/powerdomain44xx.c
new file mode 100644
index 000000000000..5dc337c0e5d5
--- /dev/null
+++ b/arch/arm/mach-omap2/powerdomain44xx.c
@@ -0,0 +1,55 @@
+/*
+ * OMAP4 powerdomain control
+ *
+ * Copyright (C) 2009-2010 Texas Instruments, Inc.
+ * Copyright (C) 2007-2009 Nokia Corporation
+ *
+ * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
+ * Rajendra Nayak <rnayak@ti.com>
+ *
+ * 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.
+ */
+
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <plat/powerdomain.h>
+#include <plat/prcm.h>
+#include "prm.h"
+#include "prm-regbits-44xx.h"
+#include "powerdomains.h"
+
+static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
+ (pwrst << OMAP_POWERSTATE_SHIFT),
+ pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
+ return 0;
+}
+
+static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
+{
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL, OMAP_POWERSTATE_MASK);
+}
+
+static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm)
+{
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP4_PM_PWSTST, OMAP_POWERSTATEST_MASK);
+}
+
+static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST,
+ OMAP4430_LASTPOWERSTATEENTERED_MASK);
+}
+
+struct pwrdm_ops omap4_pwrdm_operations = {
+ .pwrdm_set_next_pwrst = omap4_pwrdm_set_next_pwrst,
+ .pwrdm_read_next_pwrst = omap4_pwrdm_read_next_pwrst,
+ .pwrdm_read_pwrst = omap4_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst,
+};