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Date: Fri, 23 Dec 2022 10:42:48 +0100
From: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
To: mturquette@...libre.com
Cc: sboyd@...nel.org, matthias.bgg@...il.com, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org,
angelogioacchino.delregno@...labora.com, wenst@...omium.org,
johnson.wang@...iatek.com, miles.chen@...iatek.com,
fparent@...libre.com, chun-jie.chen@...iatek.com,
sam.shih@...iatek.com, y.oudjana@...tonmail.com,
nfraprado@...labora.com, rex-bc.chen@...iatek.com,
ryder.lee@...nel.org, daniel@...rotopia.org,
jose.exposito89@...il.com, yangyingliang@...wei.com,
pablo.sun@...iatek.com, msp@...libre.com, weiyi.lu@...iatek.com,
ikjn@...omium.org, linux-kernel@...r.kernel.org,
linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
kernel@...labora.com
Subject: [PATCH v2 12/23] clk: mediatek: clk-mtk: Extend mtk_clk_simple_probe()
As a preparation to increase probe functions commonization across
various MediaTek SoC clock controller drivers, extend function
mtk_clk_simple_probe() to be able to register not only gates, but
also fixed clocks, factors, muxes and composites.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
drivers/clk/mediatek/clk-mtk.c | 101 ++++++++++++++++++++++++++++++---
drivers/clk/mediatek/clk-mtk.h | 10 ++++
2 files changed, 103 insertions(+), 8 deletions(-)
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index d05364e17e95..b0a6225cd7b2 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -11,12 +11,14 @@
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include "clk-mtk.h"
#include "clk-gate.h"
+#include "clk-mux.h"
const struct mtk_gate_regs cg_regs_dummy = { 0, 0, 0 };
@@ -465,20 +467,71 @@ int mtk_clk_simple_probe(struct platform_device *pdev)
const struct mtk_clk_desc *mcd;
struct clk_hw_onecell_data *clk_data;
struct device_node *node = pdev->dev.of_node;
- int r;
+ void __iomem *base;
+ int num_clks, r;
mcd = of_device_get_match_data(&pdev->dev);
if (!mcd)
return -EINVAL;
- clk_data = mtk_alloc_clk_data(mcd->num_clks);
+ /* Composite clocks needs us to pass iomem pointer */
+ if (mcd->composite_clks) {
+ if (!mcd->shared_io)
+ base = devm_platform_ioremap_resource(pdev, 0);
+ else
+ base = of_iomap(node, 0);
+
+ if (IS_ERR_OR_NULL(base))
+ return IS_ERR(base) ? PTR_ERR(base) : -ENOMEM;
+ }
+
+ /* Calculate how many clk_hw_onecell_data entries to allocate */
+ num_clks = mcd->num_clks + mcd->num_composite_clks;
+ num_clks += mcd->num_fixed_clks + mcd->num_factor_clks;
+ num_clks += mcd->num_mux_clks;
+
+ clk_data = mtk_alloc_clk_data(num_clks);
if (!clk_data)
return -ENOMEM;
- r = mtk_clk_register_gates(node, mcd->clks, mcd->num_clks,
- clk_data, &pdev->dev);
- if (r)
- goto free_data;
+ if (mcd->fixed_clks) {
+ r = mtk_clk_register_fixed_clks(mcd->fixed_clks,
+ mcd->num_fixed_clks, clk_data);
+ if (r)
+ goto free_data;
+ }
+
+ if (mcd->factor_clks) {
+ r = mtk_clk_register_factors(mcd->factor_clks,
+ mcd->num_factor_clks, clk_data);
+ if (r)
+ goto unregister_fixed_clks;
+ }
+
+ if (mcd->mux_clks) {
+ r = mtk_clk_register_muxes(mcd->mux_clks, mcd->num_mux_clks,
+ node, mcd->clk_lock, clk_data,
+ &pdev->dev);
+ if (r)
+ goto unregister_factors;
+ };
+
+ if (mcd->composite_clks) {
+ /* We don't check composite_lock because it's optional */
+ r = mtk_clk_register_composites(mcd->composite_clks,
+ mcd->num_composite_clks,
+ base, mcd->clk_lock,
+ clk_data, &pdev->dev);
+ if (r)
+ goto unregister_muxes;
+ }
+
+ if (mcd->clks) {
+ r = mtk_clk_register_gates(node, mcd->clks, mcd->num_clks,
+ clk_data, &pdev->dev);
+ if (r)
+ goto unregister_composites;
+ }
r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
if (r)
@@ -496,9 +549,28 @@ int mtk_clk_simple_probe(struct platform_device *pdev)
return r;
unregister_clks:
- mtk_clk_unregister_gates(mcd->clks, mcd->num_clks, clk_data);
+ if (mcd->clks)
+ mtk_clk_unregister_gates(mcd->clks, mcd->num_clks, clk_data);
+unregister_composites:
+ if (mcd->composite_clks)
+ mtk_clk_unregister_composites(mcd->composite_clks,
+ mcd->num_composite_clks, clk_data);
+unregister_muxes:
+ if (mcd->mux_clks)
+ mtk_clk_unregister_muxes(mcd->mux_clks,
+ mcd->num_mux_clks, clk_data);
+unregister_factors:
+ if (mcd->factor_clks)
+ mtk_clk_unregister_factors(mcd->factor_clks,
+ mcd->num_factor_clks, clk_data);
+unregister_fixed_clks:
+ if (mcd->fixed_clks)
+ mtk_clk_unregister_fixed_clks(mcd->fixed_clks,
+ mcd->num_fixed_clks, clk_data);
free_data:
mtk_free_clk_data(clk_data);
+ if (mcd->shared_io && base)
+ iounmap(base);
return r;
}
EXPORT_SYMBOL_GPL(mtk_clk_simple_probe);
@@ -510,7 +582,20 @@ int mtk_clk_simple_remove(struct platform_device *pdev)
struct device_node *node = pdev->dev.of_node;
of_clk_del_provider(node);
- mtk_clk_unregister_gates(mcd->clks, mcd->num_clks, clk_data);
+ if (mcd->clks)
+ mtk_clk_unregister_gates(mcd->clks, mcd->num_clks, clk_data);
+ if (mcd->composite_clks)
+ mtk_clk_unregister_composites(mcd->composite_clks,
+ mcd->num_composite_clks, clk_data);
+ if (mcd->mux_clks)
+ mtk_clk_unregister_muxes(mcd->mux_clks,
+ mcd->num_mux_clks, clk_data);
+ if (mcd->factor_clks)
+ mtk_clk_unregister_factors(mcd->factor_clks,
+ mcd->num_factor_clks, clk_data);
+ if (mcd->fixed_clks)
+ mtk_clk_unregister_fixed_clks(mcd->fixed_clks,
+ mcd->num_fixed_clks, clk_data);
mtk_free_clk_data(clk_data);
return 0;
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index dd43235285db..1d036ba6ca07 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -220,7 +220,17 @@ void mtk_clk_unregister_ref2usb_tx(struct clk_hw *hw);
struct mtk_clk_desc {
const struct mtk_gate *clks;
size_t num_clks;
+ const struct mtk_composite *composite_clks;
+ size_t num_composite_clks;
+ const struct mtk_fixed_clk *fixed_clks;
+ size_t num_fixed_clks;
+ const struct mtk_fixed_factor *factor_clks;
+ size_t num_factor_clks;
+ const struct mtk_mux *mux_clks;
+ size_t num_mux_clks;
const struct mtk_clk_rst_desc *rst_desc;
+ spinlock_t *clk_lock;
+ bool shared_io;
};
int mtk_clk_simple_probe(struct platform_device *pdev);
--
2.39.0
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