Re: [PATCH v10 07/12] soc: mediatek: Remove infracfg misc driver support

From: Weiyi Lu
Date: Thu Dec 19 2019 - 22:31:28 EST

On Thu, 2019-12-19 at 11:56 +0800, Nicolas Boichat wrote:
> On Wed, Dec 18, 2019 at 4:31 PM Weiyi Lu <weiyi.lu@xxxxxxxxxxxx> wrote:
> >
> > In previous patches, we introduce scpsys-ext driver that covers
> > the functions which infracfg misc driver provided.
> > And then replace bus_prot_mask with bp_table of all compatibles.
> > Now, we're going to remove infracfg misc drvier which is no longer
> > being used.
> >
> > Signed-off-by: Weiyi Lu <weiyi.lu@xxxxxxxxxxxx>
> > ---
> > drivers/soc/mediatek/Kconfig | 10 -----
> > drivers/soc/mediatek/Makefile | 3 +-
> > drivers/soc/mediatek/mtk-infracfg.c | 79 -----------------------------------
> > include/linux/soc/mediatek/infracfg.h | 39 -----------------
> > 4 files changed, 1 insertion(+), 130 deletions(-)
> > delete mode 100644 drivers/soc/mediatek/mtk-infracfg.c
> > delete mode 100644 include/linux/soc/mediatek/infracfg.h
> >
> > diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
> > index 2114b56..f837b3c 100644
> > --- a/drivers/soc/mediatek/Kconfig
> > +++ b/drivers/soc/mediatek/Kconfig
> > @@ -10,21 +10,12 @@ config MTK_CMDQ
> > depends on ARCH_MEDIATEK || COMPILE_TEST
> > select MAILBOX
> > select MTK_CMDQ_MBOX
> > - select MTK_INFRACFG
> > help
> > Say yes here to add support for the MediaTek Command Queue (CMDQ)
> > driver. The CMDQ is used to help read/write registers with critical
> > time limitation, such as updating display configuration during the
> > vblank.
> >
> > -config MTK_INFRACFG
> > - bool "MediaTek INFRACFG Support"
> > - select REGMAP
> > - help
> > - Say yes here to add support for the MediaTek INFRACFG controller. The
> > - INFRACFG controller contains various infrastructure registers not
> > - directly associated to any device.
> > -
> > config MTK_PMIC_WRAP
> > tristate "MediaTek PMIC Wrapper Support"
> > depends on RESET_CONTROLLER
> > @@ -38,7 +29,6 @@ config MTK_SCPSYS
> > bool "MediaTek SCPSYS Support"
> > default ARCH_MEDIATEK
> > select REGMAP
> > - select MTK_INFRACFG
> > select PM_GENERIC_DOMAINS if PM
> > help
> > Say yes here to add support for the MediaTek SCPSYS power domain
> > diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile
> > index b442be9..7bf7e88 100644
> > --- a/drivers/soc/mediatek/Makefile
> > +++ b/drivers/soc/mediatek/Makefile
> > @@ -1,5 +1,4 @@
> > # SPDX-License-Identifier: GPL-2.0-only
> > obj-$(CONFIG_MTK_CMDQ) += mtk-cmdq-helper.o
> > -obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o mtk-scpsys-ext.o
> > obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o
> > -obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o
> > +obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o mtk-scpsys-ext.o
> > diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c
> > deleted file mode 100644
> > index 341c7ac..0000000
> > --- a/drivers/soc/mediatek/mtk-infracfg.c
> > +++ /dev/null
> > @@ -1,79 +0,0 @@
> > -// SPDX-License-Identifier: GPL-2.0-only
> > -/*
> > - * Copyright (c) 2015 Pengutronix, Sascha Hauer <kernel@xxxxxxxxxxxxxx>
> > - */
> > -
> > -#include <linux/export.h>
> > -#include <linux/jiffies.h>
> > -#include <linux/regmap.h>
> > -#include <linux/soc/mediatek/infracfg.h>
> > -#include <asm/processor.h>
> > -
> > -#define MTK_POLL_DELAY_US 10
> > -#define MTK_POLL_TIMEOUT (jiffies_to_usecs(HZ))
> > -
> > -#define INFRA_TOPAXI_PROTECTEN 0x0220
> > -#define INFRA_TOPAXI_PROTECTSTA1 0x0228
> > -#define INFRA_TOPAXI_PROTECTEN_SET 0x0260
> > -#define INFRA_TOPAXI_PROTECTEN_CLR 0x0264
> > -
> > -/**
> > - * mtk_infracfg_set_bus_protection - enable bus protection
> > - * @regmap: The infracfg regmap
> > - * @mask: The mask containing the protection bits to be enabled.
> > - * @reg_update: The boolean flag determines to set the protection bits
> > - * by regmap_update_bits with enable register(PROTECTEN) or
> > - * by regmap_write with set register(PROTECTEN_SET).
> > - *
> > - * This function enables the bus protection bits for disabled power
> > - * domains so that the system does not hang when some unit accesses the
> > - * bus while in power down.
> > - */
> > -int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
> > - bool reg_update)
> > -{
> > - u32 val;
> > - int ret;
> > -
> > - if (reg_update)
> > - regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask,
> > - mask);
> > - else
> > - regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_SET, mask);
> > -
> > - ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
> > - val, (val & mask) == mask,
> > - MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
> > -
> > - return ret;
> > -}
> > -
> > -/**
> > - * mtk_infracfg_clear_bus_protection - disable bus protection
> > - * @regmap: The infracfg regmap
> > - * @mask: The mask containing the protection bits to be disabled.
> > - * @reg_update: The boolean flag determines to clear the protection bits
> > - * by regmap_update_bits with enable register(PROTECTEN) or
> > - * by regmap_write with clear register(PROTECTEN_CLR).
> > - *
> > - * This function disables the bus protection bits previously enabled with
> > - * mtk_infracfg_set_bus_protection.
> > - */
> > -
> > -int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
> > - bool reg_update)
> > -{
> > - int ret;
> > - u32 val;
> > -
> > - if (reg_update)
> > - regmap_update_bits(infracfg, INFRA_TOPAXI_PROTECTEN, mask, 0);
> > - else
> > - regmap_write(infracfg, INFRA_TOPAXI_PROTECTEN_CLR, mask);
> > -
> > - ret = regmap_read_poll_timeout(infracfg, INFRA_TOPAXI_PROTECTSTA1,
> > - val, !(val & mask),
> > - MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
> > -
> > - return ret;
> > -}
> > diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h
> > deleted file mode 100644
> > index fd25f01..0000000
> > --- a/include/linux/soc/mediatek/infracfg.h
> > +++ /dev/null
> > @@ -1,39 +0,0 @@
> > -/* SPDX-License-Identifier: GPL-2.0 */
> > -#ifndef __SOC_MEDIATEK_INFRACFG_H
> > -#define __SOC_MEDIATEK_INFRACFG_H
> > -
> > -#define MT8173_TOP_AXI_PROT_EN_MCI_M2 BIT(0)
> > -#define MT8173_TOP_AXI_PROT_EN_MM_M0 BIT(1)
> > -#define MT8173_TOP_AXI_PROT_EN_MM_M1 BIT(2)
> > -#define MT8173_TOP_AXI_PROT_EN_MMAPB_S BIT(6)
> > -#define MT8173_TOP_AXI_PROT_EN_L2C_M2 BIT(9)
> > -#define MT8173_TOP_AXI_PROT_EN_L2SS_SMI BIT(11)
> > -#define MT8173_TOP_AXI_PROT_EN_L2SS_ADD BIT(12)
> > -#define MT8173_TOP_AXI_PROT_EN_CCI_M2 BIT(13)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_S BIT(14)
> > -#define MT8173_TOP_AXI_PROT_EN_PERI_M0 BIT(15)
> > -#define MT8173_TOP_AXI_PROT_EN_PERI_M1 BIT(16)
> > -#define MT8173_TOP_AXI_PROT_EN_DEBUGSYS BIT(17)
> > -#define MT8173_TOP_AXI_PROT_EN_CQ_DMA BIT(18)
> > -#define MT8173_TOP_AXI_PROT_EN_GCPU BIT(19)
> > -#define MT8173_TOP_AXI_PROT_EN_IOMMU BIT(20)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_M0 BIT(21)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_M1 BIT(22)
> > -#define MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT BIT(23)
> > -
> > -#define MT2701_TOP_AXI_PROT_EN_MM_M0 BIT(1)
> > -#define MT2701_TOP_AXI_PROT_EN_CONN_M BIT(2)
> > -#define MT2701_TOP_AXI_PROT_EN_CONN_S BIT(8)
> > -
> > -#define MT7622_TOP_AXI_PROT_EN_ETHSYS (BIT(3) | BIT(17))
> > -#define MT7622_TOP_AXI_PROT_EN_HIF0 (BIT(24) | BIT(25))
> > -#define MT7622_TOP_AXI_PROT_EN_HIF1 (BIT(26) | BIT(27) | \
> > - BIT(28))
> > -#define MT7622_TOP_AXI_PROT_EN_WB (BIT(2) | BIT(6) | \
> > - BIT(7) | BIT(8))
>
> It was really nice to have these all defined, can we move those to
> scpsys-ext.h? (and do the same for MT8183?)
>

Sure. And I'll do the same for MT8183 in next version.

> > -int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
> > - bool reg_update);
> > -int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
> > - bool reg_update);
> > -#endif /* __SOC_MEDIATEK_INFRACFG_H */
> > --
> > 1.8.1.1.dirty