Added missing tegra files.HEADmaster

1 files changed, 241 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/powerdomain2xxx_3xxx.c b/arch/arm/mach-omap2/powerdomain2xxx_3xxx.c
new file mode 100644
index 00000000000..cf600e22bf8
--- /dev/null
+++ b/arch/arm/mach-omap2/powerdomain2xxx_3xxx.c
@@ -0,0 +1,241 @@
+/*
+ * OMAP2 and OMAP3 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/prcm.h>
+
+#include "powerdomain.h"
+#include "prm.h"
+#include "prm-regbits-24xx.h"
+#include "prm-regbits-34xx.h"
+
+
+/* Common functions across OMAP2 and OMAP3 */
+static int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
+{
+        omap2_prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
+                                (pwrst << OMAP_POWERSTATE_SHIFT),
+                                pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+        return 0;
+}
+
+static int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
+{
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP2_PM_PWSTCTRL,
+                                             OMAP_POWERSTATE_MASK);
+}
+
+static int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm)
+{
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP2_PM_PWSTST,
+                                             OMAP_POWERSTATEST_MASK);
+}
+
+static int omap2_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
+                                                                u8 pwrst)
+{
+        u32 m;
+
+        m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
+
+        omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
+                                   OMAP2_PM_PWSTCTRL);
+
+        return 0;
+}
+
+static int omap2_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
+                                                                u8 pwrst)
+{
+        u32 m;
+
+        m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
+
+        omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
+                                   OMAP2_PM_PWSTCTRL);
+
+        return 0;
+}
+
+static int omap2_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+        u32 m;
+
+        m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
+
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST,
+                                             m);
+}
+
+static int omap2_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
+{
+        u32 m;
+
+        m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
+
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP2_PM_PWSTCTRL, m);
+}
+
+static int omap2_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
+{
+        u32 v;
+
+        v = pwrst << __ffs(OMAP3430_LOGICL1CACHERETSTATE_MASK);
+        omap2_prm_rmw_mod_reg_bits(OMAP3430_LOGICL1CACHERETSTATE_MASK, v,
+                                   pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+
+        return 0;
+}
+
+static int omap2_pwrdm_wait_transition(struct powerdomain *pwrdm)
+{
+        u32 c = 0;
+
+        /*
+         * REVISIT: pwrdm_wait_transition() may be better implemented
+         * via a callback and a periodic timer check -- how long do we expect
+         * powerdomain transitions to take?
+         */
+
+        /* XXX Is this udelay() value meaningful? */
+        while ((omap2_prm_read_mod_reg(pwrdm->prcm_offs, OMAP2_PM_PWSTST) &
+                OMAP_INTRANSITION_MASK) &&
+                (c++ < PWRDM_TRANSITION_BAILOUT))
+                        udelay(1);
+
+        if (c > PWRDM_TRANSITION_BAILOUT) {
+                printk(KERN_ERR "powerdomain: waited too long for "
+                        "powerdomain %s to complete transition\n", pwrdm->name);
+                return -EAGAIN;
+        }
+
+        pr_debug("powerdomain: completed transition in %d loops\n", c);
+
+        return 0;
+}
+
+/* Applicable only for OMAP3. Not supported on OMAP2 */
+static int omap3_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP3430_PM_PREPWSTST,
+                                             OMAP3430_LASTPOWERSTATEENTERED_MASK);
+}
+
+static int omap3_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
+{
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP2_PM_PWSTST,
+                                             OMAP3430_LOGICSTATEST_MASK);
+}
+
+static int omap3_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
+{
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP2_PM_PWSTCTRL,
+                                             OMAP3430_LOGICSTATEST_MASK);
+}
+
+static int omap3_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
+{
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                             OMAP3430_PM_PREPWSTST,
+                                             OMAP3430_LASTLOGICSTATEENTERED_MASK);
+}
+
+static int omap3_get_mem_bank_lastmemst_mask(u8 bank)
+{
+        switch (bank) {
+        case 0:
+                return OMAP3430_LASTMEM1STATEENTERED_MASK;
+        case 1:
+                return OMAP3430_LASTMEM2STATEENTERED_MASK;
+        case 2:
+                return OMAP3430_LASTSHAREDL2CACHEFLATSTATEENTERED_MASK;
+        case 3:
+                return OMAP3430_LASTL2FLATMEMSTATEENTERED_MASK;
+        default:
+                WARN_ON(1); /* should never happen */
+                return -EEXIST;
+        }
+        return 0;
+}
+
+static int omap3_pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+        u32 m;
+
+        m = omap3_get_mem_bank_lastmemst_mask(bank);
+
+        return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+                                OMAP3430_PM_PREPWSTST, m);
+}
+
+static int omap3_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
+{
+        omap2_prm_write_mod_reg(0, pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST);
+        return 0;
+}
+
+static int omap3_pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm)
+{
+        return omap2_prm_rmw_mod_reg_bits(0,
+                                          1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
+                                          pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+}
+
+static int omap3_pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm)
+{
+        return omap2_prm_rmw_mod_reg_bits(1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
+                                          0, pwrdm->prcm_offs,
+                                          OMAP2_PM_PWSTCTRL);
+}
+
+struct pwrdm_ops omap2_pwrdm_operations = {
+        .pwrdm_set_next_pwrst   = omap2_pwrdm_set_next_pwrst,
+        .pwrdm_read_next_pwrst  = omap2_pwrdm_read_next_pwrst,
+        .pwrdm_read_pwrst       = omap2_pwrdm_read_pwrst,
+        .pwrdm_set_logic_retst  = omap2_pwrdm_set_logic_retst,
+        .pwrdm_set_mem_onst     = omap2_pwrdm_set_mem_onst,
+        .pwrdm_set_mem_retst    = omap2_pwrdm_set_mem_retst,
+        .pwrdm_read_mem_pwrst   = omap2_pwrdm_read_mem_pwrst,
+        .pwrdm_read_mem_retst   = omap2_pwrdm_read_mem_retst,
+        .pwrdm_wait_transition  = omap2_pwrdm_wait_transition,
+};
+
+struct pwrdm_ops omap3_pwrdm_operations = {
+        .pwrdm_set_next_pwrst   = omap2_pwrdm_set_next_pwrst,
+        .pwrdm_read_next_pwrst  = omap2_pwrdm_read_next_pwrst,
+        .pwrdm_read_pwrst       = omap2_pwrdm_read_pwrst,
+        .pwrdm_read_prev_pwrst  = omap3_pwrdm_read_prev_pwrst,
+        .pwrdm_set_logic_retst  = omap2_pwrdm_set_logic_retst,
+        .pwrdm_read_logic_pwrst = omap3_pwrdm_read_logic_pwrst,
+        .pwrdm_read_logic_retst = omap3_pwrdm_read_logic_retst,
+        .pwrdm_read_prev_logic_pwrst    = omap3_pwrdm_read_prev_logic_pwrst,
+        .pwrdm_set_mem_onst     = omap2_pwrdm_set_mem_onst,
+        .pwrdm_set_mem_retst    = omap2_pwrdm_set_mem_retst,
+        .pwrdm_read_mem_pwrst   = omap2_pwrdm_read_mem_pwrst,
+        .pwrdm_read_mem_retst   = omap2_pwrdm_read_mem_retst,
+        .pwrdm_read_prev_mem_pwrst      = omap3_pwrdm_read_prev_mem_pwrst,
+        .pwrdm_clear_all_prev_pwrst     = omap3_pwrdm_clear_all_prev_pwrst,
+        .pwrdm_enable_hdwr_sar  = omap3_pwrdm_enable_hdwr_sar,
+        .pwrdm_disable_hdwr_sar = omap3_pwrdm_disable_hdwr_sar,
+        .pwrdm_wait_transition  = omap2_pwrdm_wait_transition,
+};