From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools
---
kernel/drivers/clk/ti/autoidle.c | 111 ++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 72 insertions(+), 39 deletions(-)
diff --git a/kernel/drivers/clk/ti/autoidle.c b/kernel/drivers/clk/ti/autoidle.c
index 7bb9afb..f6f8a40 100644
--- a/kernel/drivers/clk/ti/autoidle.c
+++ b/kernel/drivers/clk/ti/autoidle.c
@@ -35,7 +35,44 @@
#define AUTOIDLE_LOW 0x1
static LIST_HEAD(autoidle_clks);
-static LIST_HEAD(clk_hw_omap_clocks);
+
+/*
+ * we have some non-atomic read/write
+ * operations behind it, so lets
+ * take one lock for handling autoidle
+ * of all clocks
+ */
+static DEFINE_SPINLOCK(autoidle_spinlock);
+
+static int _omap2_clk_deny_idle(struct clk_hw_omap *clk)
+{
+ if (clk->ops && clk->ops->deny_idle) {
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&autoidle_spinlock, irqflags);
+ clk->autoidle_count++;
+ if (clk->autoidle_count == 1)
+ clk->ops->deny_idle(clk);
+
+ spin_unlock_irqrestore(&autoidle_spinlock, irqflags);
+ }
+ return 0;
+}
+
+static int _omap2_clk_allow_idle(struct clk_hw_omap *clk)
+{
+ if (clk->ops && clk->ops->allow_idle) {
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&autoidle_spinlock, irqflags);
+ clk->autoidle_count--;
+ if (clk->autoidle_count == 0)
+ clk->ops->allow_idle(clk);
+
+ spin_unlock_irqrestore(&autoidle_spinlock, irqflags);
+ }
+ return 0;
+}
/**
* omap2_clk_deny_idle - disable autoidle on an OMAP clock
@@ -45,12 +82,20 @@
*/
int omap2_clk_deny_idle(struct clk *clk)
{
- struct clk_hw_omap *c;
+ struct clk_hw *hw;
- c = to_clk_hw_omap(__clk_get_hw(clk));
- if (c->ops && c->ops->deny_idle)
- c->ops->deny_idle(c);
- return 0;
+ if (!clk)
+ return -EINVAL;
+
+ hw = __clk_get_hw(clk);
+
+ if (omap2_clk_is_hw_omap(hw)) {
+ struct clk_hw_omap *c = to_clk_hw_omap(hw);
+
+ return _omap2_clk_deny_idle(c);
+ }
+
+ return -EINVAL;
}
/**
@@ -61,12 +106,20 @@
*/
int omap2_clk_allow_idle(struct clk *clk)
{
- struct clk_hw_omap *c;
+ struct clk_hw *hw;
- c = to_clk_hw_omap(__clk_get_hw(clk));
- if (c->ops && c->ops->allow_idle)
- c->ops->allow_idle(c);
- return 0;
+ if (!clk)
+ return -EINVAL;
+
+ hw = __clk_get_hw(clk);
+
+ if (omap2_clk_is_hw_omap(hw)) {
+ struct clk_hw_omap *c = to_clk_hw_omap(hw);
+
+ return _omap2_clk_allow_idle(c);
+ }
+
+ return -EINVAL;
}
static void _allow_autoidle(struct clk_ti_autoidle *clk)
@@ -168,26 +221,6 @@
}
/**
- * omap2_init_clk_hw_omap_clocks - initialize an OMAP clock
- * @hw: struct clk_hw * to initialize
- *
- * Add an OMAP clock @clk to the internal list of OMAP clocks. Used
- * temporarily for autoidle handling, until this support can be
- * integrated into the common clock framework code in some way. No
- * return value.
- */
-void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw)
-{
- struct clk_hw_omap *c;
-
- if (clk_hw_get_flags(hw) & CLK_IS_BASIC)
- return;
-
- c = to_clk_hw_omap(hw);
- list_add(&c->node, &clk_hw_omap_clocks);
-}
-
-/**
* omap2_clk_enable_autoidle_all - enable autoidle on all OMAP clocks that
* support it
*
@@ -198,11 +231,11 @@
*/
int omap2_clk_enable_autoidle_all(void)
{
- struct clk_hw_omap *c;
+ int ret;
- list_for_each_entry(c, &clk_hw_omap_clocks, node)
- if (c->ops && c->ops->allow_idle)
- c->ops->allow_idle(c);
+ ret = omap2_clk_for_each(_omap2_clk_allow_idle);
+ if (ret)
+ return ret;
_clk_generic_allow_autoidle_all();
@@ -220,11 +253,11 @@
*/
int omap2_clk_disable_autoidle_all(void)
{
- struct clk_hw_omap *c;
+ int ret;
- list_for_each_entry(c, &clk_hw_omap_clocks, node)
- if (c->ops && c->ops->deny_idle)
- c->ops->deny_idle(c);
+ ret = omap2_clk_for_each(_omap2_clk_deny_idle);
+ if (ret)
+ return ret;
_clk_generic_deny_autoidle_all();
--
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