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Message-ID: <CAATdQgB4P=7Wvhc_SBxy1tGKRXD7qukc95bGNJJ=ECyVm_dgHQ@mail.gmail.com>
Date: Wed, 21 Jul 2021 18:44:37 +0800
From: Ikjoon Jang <ikjn@...omium.org>
To: Yong Wu <yong.wu@...iatek.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
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>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@...ts.infradead.org>,
srv_heupstream <srv_heupstream@...iatek.com>,
open list <linux-kernel@...r.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-arm-kernel@...ts.infradead.org>,
iommu@...ts.linux-foundation.org, youlin.pei@...iatek.com,
anan.sun@...iatek.com, ming-fan.chen@...iatek.com,
yi.kuo@...iatek.com, anthony.huang@...iatek.com
Subject: Re: [PATCH v2 05/11] memory: mtk-smi: Adjust some code position
Hi,
On Thu, Jul 15, 2021 at 8:23 PM Yong Wu <yong.wu@...iatek.com> wrote:
>
> No functional change. Only move the code position to make the code more
> readable.
> 1. Put the register smi-common above smi-larb. Prepare to add some others
> register setting.
> 2. Put mtk_smi_larb_unbind around larb_bind.
> 3. Sort the SoC data alphabetically. and put them in one line as the
> current kernel allow it.
>
> Signed-off-by: Yong Wu <yong.wu@...iatek.com>
Reviewed-by: Ikjoon Jang <ikjn@...omium.org>
> ---
> drivers/memory/mtk-smi.c | 185 +++++++++++++++------------------------
> 1 file changed, 73 insertions(+), 112 deletions(-)
>
> diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
> index ff07b14bcd66..6f8e582bace5 100644
> --- a/drivers/memory/mtk-smi.c
> +++ b/drivers/memory/mtk-smi.c
> @@ -17,12 +17,15 @@
> #include <dt-bindings/memory/mt2701-larb-port.h>
> #include <dt-bindings/memory/mtk-memory-port.h>
>
> -/* mt8173 */
> -#define SMI_LARB_MMU_EN 0xf00
> +/* SMI COMMON */
> +#define SMI_BUS_SEL 0x220
> +#define SMI_BUS_LARB_SHIFT(larbid) ((larbid) << 1)
> +/* All are MMU0 defaultly. Only specialize mmu1 here. */
> +#define F_MMU1_LARB(larbid) (0x1 << SMI_BUS_LARB_SHIFT(larbid))
>
> -/* mt8167 */
> -#define MT8167_SMI_LARB_MMU_EN 0xfc0
> +/* SMI LARB */
>
> +/* Below are about mmu enable registers, they are different in SoCs */
> /* mt2701 */
> #define REG_SMI_SECUR_CON_BASE 0x5c0
>
> @@ -41,20 +44,20 @@
> /* mt2701 domain should be set to 3 */
> #define SMI_SECUR_CON_VAL_DOMAIN(id) (0x3 << ((((id) & 0x7) << 2) + 1))
>
> -/* mt2712 */
> -#define SMI_LARB_NONSEC_CON(id) (0x380 + ((id) * 4))
> -#define F_MMU_EN BIT(0)
> -#define BANK_SEL(id) ({ \
> +/* mt8167 */
> +#define MT8167_SMI_LARB_MMU_EN 0xfc0
> +
> +/* mt8173 */
> +#define MT8173_SMI_LARB_MMU_EN 0xf00
> +
> +/* larb gen2 */
> +#define SMI_LARB_NONSEC_CON(id) (0x380 + ((id) * 4))
> +#define F_MMU_EN BIT(0)
> +#define BANK_SEL(id) ({ \
> u32 _id = (id) & 0x3; \
> (_id << 8 | _id << 10 | _id << 12 | _id << 14); \
> })
>
> -/* SMI COMMON */
> -#define SMI_BUS_SEL 0x220
> -#define SMI_BUS_LARB_SHIFT(larbid) ((larbid) << 1)
> -/* All are MMU0 defaultly. Only specialize mmu1 here. */
> -#define F_MMU1_LARB(larbid) (0x1 << SMI_BUS_LARB_SHIFT(larbid))
> -
> enum mtk_smi_type {
> MTK_SMI_GEN1,
> MTK_SMI_GEN2
> @@ -132,36 +135,16 @@ mtk_smi_larb_bind(struct device *dev, struct device *master, void *data)
> return -ENODEV;
> }
>
> -static void mtk_smi_larb_config_port_gen2_general(struct device *dev)
> -{
> - struct mtk_smi_larb *larb = dev_get_drvdata(dev);
> - u32 reg;
> - int i;
> -
> - if (BIT(larb->larbid) & larb->larb_gen->larb_direct_to_common_mask)
> - return;
> -
> - for_each_set_bit(i, (unsigned long *)larb->mmu, 32) {
> - reg = readl_relaxed(larb->base + SMI_LARB_NONSEC_CON(i));
> - reg |= F_MMU_EN;
> - reg |= BANK_SEL(larb->bank[i]);
> - writel(reg, larb->base + SMI_LARB_NONSEC_CON(i));
> - }
> -}
> -
> -static void mtk_smi_larb_config_port_mt8173(struct device *dev)
> +static void
> +mtk_smi_larb_unbind(struct device *dev, struct device *master, void *data)
> {
> - struct mtk_smi_larb *larb = dev_get_drvdata(dev);
> -
> - writel(*larb->mmu, larb->base + SMI_LARB_MMU_EN);
> + /* Do nothing as the iommu is always enabled. */
> }
>
> -static void mtk_smi_larb_config_port_mt8167(struct device *dev)
> -{
> - struct mtk_smi_larb *larb = dev_get_drvdata(dev);
> -
> - writel(*larb->mmu, larb->base + MT8167_SMI_LARB_MMU_EN);
> -}
> +static const struct component_ops mtk_smi_larb_component_ops = {
> + .bind = mtk_smi_larb_bind,
> + .unbind = mtk_smi_larb_unbind,
> +};
>
> static void mtk_smi_larb_config_port_gen1(struct device *dev)
> {
> @@ -194,26 +177,36 @@ static void mtk_smi_larb_config_port_gen1(struct device *dev)
> }
> }
>
> -static void
> -mtk_smi_larb_unbind(struct device *dev, struct device *master, void *data)
> +static void mtk_smi_larb_config_port_mt8167(struct device *dev)
> {
> - /* Do nothing as the iommu is always enabled. */
> + struct mtk_smi_larb *larb = dev_get_drvdata(dev);
> +
> + writel(*larb->mmu, larb->base + MT8167_SMI_LARB_MMU_EN);
> }
>
> -static const struct component_ops mtk_smi_larb_component_ops = {
> - .bind = mtk_smi_larb_bind,
> - .unbind = mtk_smi_larb_unbind,
> -};
> +static void mtk_smi_larb_config_port_mt8173(struct device *dev)
> +{
> + struct mtk_smi_larb *larb = dev_get_drvdata(dev);
>
> -static const struct mtk_smi_larb_gen mtk_smi_larb_mt8173 = {
> - /* mt8173 do not need the port in larb */
> - .config_port = mtk_smi_larb_config_port_mt8173,
> -};
> + writel(*larb->mmu, larb->base + MT8173_SMI_LARB_MMU_EN);
> +}
>
> -static const struct mtk_smi_larb_gen mtk_smi_larb_mt8167 = {
> - /* mt8167 do not need the port in larb */
> - .config_port = mtk_smi_larb_config_port_mt8167,
> -};
> +static void mtk_smi_larb_config_port_gen2_general(struct device *dev)
> +{
> + struct mtk_smi_larb *larb = dev_get_drvdata(dev);
> + u32 reg;
> + int i;
> +
> + if (BIT(larb->larbid) & larb->larb_gen->larb_direct_to_common_mask)
> + return;
> +
> + for_each_set_bit(i, (unsigned long *)larb->mmu, 32) {
> + reg = readl_relaxed(larb->base + SMI_LARB_NONSEC_CON(i));
> + reg |= F_MMU_EN;
> + reg |= BANK_SEL(larb->bank[i]);
> + writel(reg, larb->base + SMI_LARB_NONSEC_CON(i));
> + }
> +}
>
> static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = {
> .port_in_larb = {
> @@ -235,6 +228,16 @@ static const struct mtk_smi_larb_gen mtk_smi_larb_mt6779 = {
> /* DUMMY | IPU0 | IPU1 | CCU | MDLA */
> };
>
> +static const struct mtk_smi_larb_gen mtk_smi_larb_mt8167 = {
> + /* mt8167 do not need the port in larb */
> + .config_port = mtk_smi_larb_config_port_mt8167,
> +};
> +
> +static const struct mtk_smi_larb_gen mtk_smi_larb_mt8173 = {
> + /* mt8173 do not need the port in larb */
> + .config_port = mtk_smi_larb_config_port_mt8173,
> +};
> +
> static const struct mtk_smi_larb_gen mtk_smi_larb_mt8183 = {
> .config_port = mtk_smi_larb_config_port_gen2_general,
> .larb_direct_to_common_mask = BIT(2) | BIT(3) | BIT(7),
> @@ -246,34 +249,13 @@ static const struct mtk_smi_larb_gen mtk_smi_larb_mt8192 = {
> };
>
> static const struct of_device_id mtk_smi_larb_of_ids[] = {
> - {
> - .compatible = "mediatek,mt8167-smi-larb",
> - .data = &mtk_smi_larb_mt8167
> - },
> - {
> - .compatible = "mediatek,mt8173-smi-larb",
> - .data = &mtk_smi_larb_mt8173
> - },
> - {
> - .compatible = "mediatek,mt2701-smi-larb",
> - .data = &mtk_smi_larb_mt2701
> - },
> - {
> - .compatible = "mediatek,mt2712-smi-larb",
> - .data = &mtk_smi_larb_mt2712
> - },
> - {
> - .compatible = "mediatek,mt6779-smi-larb",
> - .data = &mtk_smi_larb_mt6779
> - },
> - {
> - .compatible = "mediatek,mt8183-smi-larb",
> - .data = &mtk_smi_larb_mt8183
> - },
> - {
> - .compatible = "mediatek,mt8192-smi-larb",
> - .data = &mtk_smi_larb_mt8192
> - },
> + {.compatible = "mediatek,mt2701-smi-larb", .data = &mtk_smi_larb_mt2701},
> + {.compatible = "mediatek,mt2712-smi-larb", .data = &mtk_smi_larb_mt2712},
> + {.compatible = "mediatek,mt6779-smi-larb", .data = &mtk_smi_larb_mt6779},
> + {.compatible = "mediatek,mt8167-smi-larb", .data = &mtk_smi_larb_mt8167},
> + {.compatible = "mediatek,mt8173-smi-larb", .data = &mtk_smi_larb_mt8173},
> + {.compatible = "mediatek,mt8183-smi-larb", .data = &mtk_smi_larb_mt8183},
> + {.compatible = "mediatek,mt8192-smi-larb", .data = &mtk_smi_larb_mt8192},
> {}
> };
>
> @@ -428,34 +410,13 @@ static const struct mtk_smi_common_plat mtk_smi_common_mt8192 = {
> };
>
> static const struct of_device_id mtk_smi_common_of_ids[] = {
> - {
> - .compatible = "mediatek,mt8173-smi-common",
> - .data = &mtk_smi_common_gen2,
> - },
> - {
> - .compatible = "mediatek,mt8167-smi-common",
> - .data = &mtk_smi_common_gen2,
> - },
> - {
> - .compatible = "mediatek,mt2701-smi-common",
> - .data = &mtk_smi_common_gen1,
> - },
> - {
> - .compatible = "mediatek,mt2712-smi-common",
> - .data = &mtk_smi_common_gen2,
> - },
> - {
> - .compatible = "mediatek,mt6779-smi-common",
> - .data = &mtk_smi_common_mt6779,
> - },
> - {
> - .compatible = "mediatek,mt8183-smi-common",
> - .data = &mtk_smi_common_mt8183,
> - },
> - {
> - .compatible = "mediatek,mt8192-smi-common",
> - .data = &mtk_smi_common_mt8192,
> - },
> + {.compatible = "mediatek,mt2701-smi-common", .data = &mtk_smi_common_gen1},
> + {.compatible = "mediatek,mt2712-smi-common", .data = &mtk_smi_common_gen2},
> + {.compatible = "mediatek,mt6779-smi-common", .data = &mtk_smi_common_mt6779},
> + {.compatible = "mediatek,mt8167-smi-common", .data = &mtk_smi_common_gen2},
> + {.compatible = "mediatek,mt8173-smi-common", .data = &mtk_smi_common_gen2},
> + {.compatible = "mediatek,mt8183-smi-common", .data = &mtk_smi_common_mt8183},
> + {.compatible = "mediatek,mt8192-smi-common", .data = &mtk_smi_common_mt8192},
> {}
> };
>
> --
> 2.18.0
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> Linux-mediatek mailing list
> Linux-mediatek@...ts.infradead.org
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