Hi Stephen, On 5/3/20 22:01, Stephen Boyd wrote: > Quoting Enric Balletbo i Serra (2020-03-02 03:01:26) >> From: Matthias Brugger <mbrugger@xxxxxxxx> >> >> There is no strong reason for this to use CLK_OF_DECLARE instead of >> being a platform driver. > > Cool. > >> Plus, this driver provides clocks but also >> a shared register space for the mediatek-drm and the mediatek-mdp >> driver. So move to drivers/soc/mediatek as a platform driver. >> >> Signed-off-by: Matthias Brugger <mbrugger@xxxxxxxx> >> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> >> Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx> >> --- >> >> Changes in v11: None >> Changes in v10: >> - Renamed to be generic mtk-mmsys >> - Add driver data support to be able to support diferent SoCs >> >> Changes in v9: >> - Move mmsys to drivers/soc/mediatek (CK) >> >> Changes in v8: >> - Be a builtin_platform_driver like other mediatek mmsys drivers. >> >> Changes in v7: >> - Free clk_data->clks as well >> - Get rid of private data structure >> >> drivers/clk/mediatek/clk-mt8173.c | 104 -------------------- >> drivers/soc/mediatek/Kconfig | 7 ++ >> drivers/soc/mediatek/Makefile | 1 + >> drivers/soc/mediatek/mtk-mmsys.c | 154 ++++++++++++++++++++++++++++++ > > Can you generate with -M so that we can see what has actually changed? > Sure, sorry about that. >> 4 files changed, 162 insertions(+), 104 deletions(-) >> create mode 100644 drivers/soc/mediatek/mtk-mmsys.c >> >> diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig >> index 2114b563478c..7a156944d50e 100644 >> --- a/drivers/soc/mediatek/Kconfig >> +++ b/drivers/soc/mediatek/Kconfig >> @@ -44,4 +44,11 @@ config MTK_SCPSYS >> Say yes here to add support for the MediaTek SCPSYS power domain >> driver. >> >> +config MTK_MMSYS >> + bool "MediaTek MMSYS Support" >> + depends on COMMON_CLK_MT8173 > > Does it need some default so that defconfig updates don't break things? > Right. >> + help >> + Say yes here to add support for the MediaTek Multimedia >> + Subsystem (MMSYS). >> + >> endmenu >> diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile >> index b01733074ad6..01f9f873634a 100644 >> --- a/drivers/soc/mediatek/Makefile >> +++ b/drivers/soc/mediatek/Makefile >> @@ -3,3 +3,4 @@ obj-$(CONFIG_MTK_CMDQ) += mtk-cmdq-helper.o >> obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o >> obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o >> obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o >> +obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o >> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c >> new file mode 100644 >> index 000000000000..473cdf732fb5 >> --- /dev/null >> +++ b/drivers/soc/mediatek/mtk-mmsys.c >> @@ -0,0 +1,154 @@ >> +// SPDX-License-Identifier: GPL-2.0-only >> +/* >> + * Copyright (c) 2014 MediaTek Inc. >> + * Author: James Liao <jamesjj.liao@xxxxxxxxxxxx> >> + */ >> + >> +#include <linux/clk-provider.h> >> +#include <linux/of_device.h> >> +#include <linux/platform_device.h> >> + >> +#include "../../clk/mediatek/clk-gate.h" >> +#include "../../clk/mediatek/clk-mtk.h" > > Why not use include/linux/clk/? > I can move these files to include, this will impact a lot more of drivers but, yes, I think is the right way. > But I also don't understand why the clk driver is moved outside of > drivers/clk/ into drivers/soc/. Commit text saying that it has shared > registers doesn't mean it can't still keep the clk driver part in the > drivers/clk/ area. > Actually moving this to the soc directory has been requested by CK (mediatek) as a change in v8. You can see the discussion in [1] Thanks, Enric [1] https://patchwork.kernel.org/cover/11394709/ >> + >> +#include <dt-bindings/clock/mt8173-clk.h> >> + >> +static const struct mtk_gate_regs mm0_cg_regs = { >> + .set_ofs = 0x0104, >> + .clr_ofs = 0x0108, >> + .sta_ofs = 0x0100, >> +}; >> + >> +static const struct mtk_gate_regs mm1_cg_regs = { >> + .set_ofs = 0x0114, >> + .clr_ofs = 0x0118, >> + .sta_ofs = 0x0110, >> +};
