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Message-ID: <20210616114346.18812-4-yong.wu@mediatek.com>
Date: Wed, 16 Jun 2021 19:43:40 +0800
From: Yong Wu <yong.wu@...iatek.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>
CC: Krzysztof Kozlowski <krzk@...nel.org>,
Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
Robin Murphy <robin.murphy@....com>,
Tomasz Figa <tfiga@...omium.org>,
<linux-mediatek@...ts.infradead.org>,
<srv_heupstream@...iatek.com>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<iommu@...ts.linux-foundation.org>, <yong.wu@...iatek.com>,
<youlin.pei@...iatek.com>, <anan.sun@...iatek.com>,
<ming-fan.chen@...iatek.com>, <yi.kuo@...iatek.com>,
<anthony.huang@...iatek.com>
Subject: [PATCH 3/9] memory: mtk-smi: Use clk_bulk instead of the clk ops
smi have many clocks: apb/smi/gals.
This patch use clk_bulk interface instead of the orginal one to simply
the code.
gals is optional clk(some larbs may don't have gals). use clk_bulk_optional
instead. and then remove the has_gals flag.
Also remove clk fail logs since bulk interface already output fail log.
Signed-off-by: Yong Wu <yong.wu@...iatek.com>
---
drivers/memory/mtk-smi.c | 124 +++++++++++----------------------------
1 file changed, 34 insertions(+), 90 deletions(-)
diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index c5fb51f73b34..bcd2bf130655 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -60,9 +60,18 @@ enum mtk_smi_gen {
MTK_SMI_GEN2
};
+#define MTK_SMI_CLK_NR_MAX 4
+
+static const char * const mtk_smi_common_clocks[] = {
+ "apb", "smi", "gals0", "gals1", /* glas is optional */
+};
+
+static const char * const mtk_smi_larb_clocks[] = {
+ "apb", "smi", "gals"
+};
+
struct mtk_smi_common_plat {
enum mtk_smi_gen gen;
- bool has_gals;
u32 bus_sel; /* Balance some larbs to enter mmu0 or mmu1 */
};
@@ -70,13 +79,12 @@ struct mtk_smi_larb_gen {
int port_in_larb[MTK_LARB_NR_MAX + 1];
void (*config_port)(struct device *dev);
unsigned int larb_direct_to_common_mask;
- bool has_gals;
};
struct mtk_smi {
struct device *dev;
- struct clk *clk_apb, *clk_smi;
- struct clk *clk_gals0, *clk_gals1;
+ unsigned int clk_num;
+ struct clk_bulk_data clks[MTK_SMI_CLK_NR_MAX];
struct clk *clk_async; /*only needed by mt2701*/
union {
void __iomem *smi_ao_base; /* only for gen1 */
@@ -95,45 +103,6 @@ struct mtk_smi_larb { /* larb: local arbiter */
unsigned char *bank;
};
-static int mtk_smi_clk_enable(const struct mtk_smi *smi)
-{
- int ret;
-
- ret = clk_prepare_enable(smi->clk_apb);
- if (ret)
- return ret;
-
- ret = clk_prepare_enable(smi->clk_smi);
- if (ret)
- goto err_disable_apb;
-
- ret = clk_prepare_enable(smi->clk_gals0);
- if (ret)
- goto err_disable_smi;
-
- ret = clk_prepare_enable(smi->clk_gals1);
- if (ret)
- goto err_disable_gals0;
-
- return 0;
-
-err_disable_gals0:
- clk_disable_unprepare(smi->clk_gals0);
-err_disable_smi:
- clk_disable_unprepare(smi->clk_smi);
-err_disable_apb:
- clk_disable_unprepare(smi->clk_apb);
- return ret;
-}
-
-static void mtk_smi_clk_disable(const struct mtk_smi *smi)
-{
- clk_disable_unprepare(smi->clk_gals1);
- clk_disable_unprepare(smi->clk_gals0);
- clk_disable_unprepare(smi->clk_smi);
- clk_disable_unprepare(smi->clk_apb);
-}
-
int mtk_smi_larb_get(struct device *larbdev)
{
int ret = pm_runtime_resume_and_get(larbdev);
@@ -270,7 +239,6 @@ static const struct mtk_smi_larb_gen mtk_smi_larb_mt6779 = {
};
static const struct mtk_smi_larb_gen mtk_smi_larb_mt8183 = {
- .has_gals = true,
.config_port = mtk_smi_larb_config_port_gen2_general,
.larb_direct_to_common_mask = BIT(2) | BIT(3) | BIT(7),
/* IPU0 | IPU1 | CCU */
@@ -320,6 +288,7 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
struct device_node *smi_node;
struct platform_device *smi_pdev;
struct device_link *link;
+ int i, ret;
larb = devm_kzalloc(dev, sizeof(*larb), GFP_KERNEL);
if (!larb)
@@ -331,22 +300,14 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
if (IS_ERR(larb->base))
return PTR_ERR(larb->base);
- larb->smi.clk_apb = devm_clk_get(dev, "apb");
- if (IS_ERR(larb->smi.clk_apb))
- return PTR_ERR(larb->smi.clk_apb);
-
- larb->smi.clk_smi = devm_clk_get(dev, "smi");
- if (IS_ERR(larb->smi.clk_smi))
- return PTR_ERR(larb->smi.clk_smi);
-
- if (larb->larb_gen->has_gals) {
- /* The larbs may still haven't gals even if the SoC support.*/
- larb->smi.clk_gals0 = devm_clk_get(dev, "gals");
- if (PTR_ERR(larb->smi.clk_gals0) == -ENOENT)
- larb->smi.clk_gals0 = NULL;
- else if (IS_ERR(larb->smi.clk_gals0))
- return PTR_ERR(larb->smi.clk_gals0);
- }
+ larb->smi.clk_num = ARRAY_SIZE(mtk_smi_larb_clocks);
+ for (i = 0; i < larb->smi.clk_num; i++)
+ larb->smi.clks[i].id = mtk_smi_larb_clocks[i];
+
+ ret = devm_clk_bulk_get_optional(dev, larb->smi.clk_num, larb->smi.clks);
+ if (ret)
+ return ret;
+
larb->smi.dev = dev;
smi_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0);
@@ -391,11 +352,9 @@ static int __maybe_unused mtk_smi_larb_resume(struct device *dev)
const struct mtk_smi_larb_gen *larb_gen = larb->larb_gen;
int ret;
- ret = mtk_smi_clk_enable(&larb->smi);
- if (ret < 0) {
- dev_err(dev, "Failed to enable clock(%d).\n", ret);
+ ret = clk_bulk_prepare_enable(larb->smi.clk_num, larb->smi.clks);
+ if (ret < 0)
return ret;
- }
/* Configure the basic setting for this larb */
larb_gen->config_port(dev);
@@ -407,7 +366,7 @@ static int __maybe_unused mtk_smi_larb_suspend(struct device *dev)
{
struct mtk_smi_larb *larb = dev_get_drvdata(dev);
- mtk_smi_clk_disable(&larb->smi);
+ clk_bulk_disable_unprepare(larb->smi.clk_num, larb->smi.clks);
return 0;
}
@@ -437,21 +396,18 @@ static const struct mtk_smi_common_plat mtk_smi_common_gen2 = {
static const struct mtk_smi_common_plat mtk_smi_common_mt6779 = {
.gen = MTK_SMI_GEN2,
- .has_gals = true,
.bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(4) |
F_MMU1_LARB(5) | F_MMU1_LARB(6) | F_MMU1_LARB(7),
};
static const struct mtk_smi_common_plat mtk_smi_common_mt8183 = {
.gen = MTK_SMI_GEN2,
- .has_gals = true,
.bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(5) |
F_MMU1_LARB(7),
};
static const struct mtk_smi_common_plat mtk_smi_common_mt8192 = {
.gen = MTK_SMI_GEN2,
- .has_gals = true,
.bus_sel = F_MMU1_LARB(1) | F_MMU1_LARB(2) | F_MMU1_LARB(5) |
F_MMU1_LARB(6),
};
@@ -493,7 +449,7 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct mtk_smi *common;
struct resource *res;
- int ret;
+ int i, ret;
common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
if (!common)
@@ -501,23 +457,13 @@ static int mtk_smi_common_probe(struct platform_device *pdev)
common->dev = dev;
common->plat = of_device_get_match_data(dev);
- common->clk_apb = devm_clk_get(dev, "apb");
- if (IS_ERR(common->clk_apb))
- return PTR_ERR(common->clk_apb);
-
- common->clk_smi = devm_clk_get(dev, "smi");
- if (IS_ERR(common->clk_smi))
- return PTR_ERR(common->clk_smi);
+ common->clk_num = ARRAY_SIZE(mtk_smi_common_clocks);
+ for (i = 0; i < common->clk_num; i++)
+ common->clks[i].id = mtk_smi_common_clocks[i];
- if (common->plat->has_gals) {
- common->clk_gals0 = devm_clk_get(dev, "gals0");
- if (IS_ERR(common->clk_gals0))
- return PTR_ERR(common->clk_gals0);
-
- common->clk_gals1 = devm_clk_get(dev, "gals1");
- if (IS_ERR(common->clk_gals1))
- return PTR_ERR(common->clk_gals1);
- }
+ ret = devm_clk_bulk_get_optional(dev, common->clk_num, common->clks);
+ if (ret)
+ return ret;
/*
* for mtk smi gen 1, we need to get the ao(always on) base to config
@@ -561,11 +507,9 @@ static int __maybe_unused mtk_smi_common_resume(struct device *dev)
u32 bus_sel = common->plat->bus_sel;
int ret;
- ret = mtk_smi_clk_enable(common);
- if (ret) {
- dev_err(common->dev, "Failed to enable clock(%d).\n", ret);
+ ret = clk_bulk_prepare_enable(common->clk_num, common->clks);
+ if (ret)
return ret;
- }
if (common->plat->gen == MTK_SMI_GEN2 && bus_sel)
writel(bus_sel, common->base + SMI_BUS_SEL);
@@ -576,7 +520,7 @@ static int __maybe_unused mtk_smi_common_suspend(struct device *dev)
{
struct mtk_smi *common = dev_get_drvdata(dev);
- mtk_smi_clk_disable(common);
+ clk_bulk_disable_unprepare(common->clk_num, common->clks);
return 0;
}
--
2.18.0
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