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clk: sunxi-ng: Use a separate lock for each CCU instance

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Some platforms have more than one CCU driver loaded: the main CCU, the
PRCM, the display engine, and possibly others. All of these hardware
blocks have separate MMIO spaces, so there is no need to synchronize
between them.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210901050526.45673-4-samuel@sholland.org
This commit is contained in:
Samuel Holland 2021-09-01 00:05:21 -05:00 committed by Maxime Ripard
parent 66028ddb94
commit 8f81632152
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 5 additions and 4 deletions
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9
drivers/clk/sunxi-ng/ccu_common.c
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@ -17,11 +17,10 @@
struct sunxi_ccu {
const struct sunxi_ccu_desc *desc;
spinlock_t lock;
struct ccu_reset reset;
};
static DEFINE_SPINLOCK(ccu_lock);
void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock)
{
void __iomem *addr;
@ -94,6 +93,8 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev,
ccu->desc = desc;
spin_lock_init(&ccu->lock);
for (i = 0; i < desc->num_ccu_clks; i++) {
struct ccu_common *cclk = desc->ccu_clks[i];
@ -101,7 +102,7 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev,
continue;
cclk->base = reg;
cclk->lock = &ccu_lock;
cclk->lock = &ccu->lock;
}
for (i = 0; i < desc->hw_clks->num ; i++) {
@ -133,7 +134,7 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev,
reset->rcdev.owner = dev ? dev->driver->owner : THIS_MODULE;
reset->rcdev.nr_resets = desc->num_resets;
reset->base = reg;
reset->lock = &ccu_lock;
reset->lock = &ccu->lock;
reset->reset_map = desc->resets;
ret = reset_controller_register(&reset->rcdev);