| Message ID | 20210813032429.14715-4-miles.chen@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | clk: mediatek: modularize COMMON_CLK_MT6779 | expand |
Quoting Miles Chen (2021-08-12 20:24:28) > diff --git a/drivers/clk/mediatek/clk-mt6779-aud.c b/drivers/clk/mediatek/clk-mt6779-aud.c > index 11b209f95e25..439c0bc94b73 100644 > --- a/drivers/clk/mediatek/clk-mt6779-aud.c > +++ b/drivers/clk/mediatek/clk-mt6779-aud.c > @@ -4,6 +4,7 @@ > * Author: Wendell Lin <wendell.lin@mediatek.com> > */ > > +#include <linux/module.h> > #include <linux/clk-provider.h> > #include <linux/of.h> > #include <linux/of_address.h> > @@ -115,3 +116,4 @@ static struct platform_driver clk_mt6779_aud_drv = { > }; > > builtin_platform_driver(clk_mt6779_aud_drv); > +MODULE_LICENSE("GPL"); How does this work? builtin_platform_driver() means that it's not modular code. Shouldn't that be module_platform_driver()? Have you tried loading and unloading the module?
On Sat, 2021-08-28 at 21:14 -0700, Stephen Boyd wrote: > Quoting Miles Chen (2021-08-12 20:24:28) > > diff --git a/drivers/clk/mediatek/clk-mt6779-aud.c b/drivers/clk/mediatek/clk-mt6779-aud.c > > index 11b209f95e25..439c0bc94b73 100644 > > --- a/drivers/clk/mediatek/clk-mt6779-aud.c > > +++ b/drivers/clk/mediatek/clk-mt6779-aud.c > > @@ -4,6 +4,7 @@ > > * Author: Wendell Lin <wendell.lin@mediatek.com> > > */ > > > > +#include <linux/module.h> > > #include <linux/clk-provider.h> > > #include <linux/of.h> > > #include <linux/of_address.h> > > @@ -115,3 +116,4 @@ static struct platform_driver clk_mt6779_aud_drv = { > > }; > > > > builtin_platform_driver(clk_mt6779_aud_drv); > > +MODULE_LICENSE("GPL"); > > How does this work? builtin_platform_driver() means that it's not > modular code. Shouldn't that be module_platform_driver()? Have you tried > loading and unloading the module? sorry for my late response. Thanks for pointing this out. I have the same question when I was building this patch. That time I found some examples where they are using builtin_platform_driver and can be built as kernel modules: config CLK_IMX8QXP (tristate) && drivers/clk/imx/clk-imx8qxp-lpcg.c config CLK_RK3399 (tristate) && drivers/clk/rockchip/clk-rk3399.c my load test: load these moduless and do 'lsmod' on v5.14-rc1/mt6779 environment: clk_mt6779_aud 16384 0 [permanent], Live 0xffff800008fd8000 clk_mt6779_mfg 16384 0 [permanent], Live 0xffff800008fd0000 clk_mt6779_venc 16384 0 [permanent], Live 0xffff800008fc8000 clk_mt6779_vdec 16384 0 [permanent], Live 0xffff800008fc0000 clk_mt6779_cam 16384 0 [permanent], Live 0xffff800008fb8000 clk_mt6779_ipe 16384 0 [permanent], Live 0xffff800008fb0000 clk_mt6779_img 16384 0 [permanent], Live 0xffff800008fa8000 clk_mt6779_mm 16384 0 [permanent], Live 0xffff800008fa0000 I did not test 'unload' kernel modules because I did not define module_exit in this patch. But as you pointed out, it should be module_platform_driver(). I will use module_platform_driver() in the next patch. Miles
Quoting Miles Chen (2021-08-30 11:43:04) > > sorry for my late response. > > Thanks for pointing this out. I have the same question when I was > building this patch. That time I found some examples where > they are using builtin_platform_driver and can be built as > kernel modules: > > config CLK_IMX8QXP (tristate) && drivers/clk/imx/clk-imx8qxp-lpcg.c > config CLK_RK3399 (tristate) && drivers/clk/rockchip/clk-rk3399.c We should fix those drivers. Care to send a patch?
On Tue, 2021-08-31 at 22:32 -0700, Stephen Boyd wrote: > Quoting Miles Chen (2021-08-30 11:43:04) > > > > sorry for my late response. > > > > Thanks for pointing this out. I have the same question when I was > > building this patch. That time I found some examples where > > they are using builtin_platform_driver and can be built as > > kernel modules: > > > > config CLK_IMX8QXP (tristate) && drivers/clk/imx/clk-imx8qxp-lpcg.c > > config CLK_RK3399 (tristate) && drivers/clk/rockchip/clk-rk3399.c > > We should fix those drivers. Care to send a patch? No problem. I will check drviers/clk and submit fix patches. Miles
diff --git a/drivers/clk/mediatek/clk-mt6779-aud.c b/drivers/clk/mediatek/clk-mt6779-aud.c index 11b209f95e25..439c0bc94b73 100644 --- a/drivers/clk/mediatek/clk-mt6779-aud.c +++ b/drivers/clk/mediatek/clk-mt6779-aud.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/of.h> #include <linux/of_address.h> @@ -115,3 +116,4 @@ static struct platform_driver clk_mt6779_aud_drv = { }; builtin_platform_driver(clk_mt6779_aud_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-cam.c b/drivers/clk/mediatek/clk-mt6779-cam.c index 244d4208b7fb..c99ddb210b70 100644 --- a/drivers/clk/mediatek/clk-mt6779-cam.c +++ b/drivers/clk/mediatek/clk-mt6779-cam.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> #include <dt-bindings/clock/mt6779-clk.h> @@ -64,3 +65,4 @@ static struct platform_driver clk_mt6779_cam_drv = { }; builtin_platform_driver(clk_mt6779_cam_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-img.c b/drivers/clk/mediatek/clk-mt6779-img.c index 26292a45c613..bf652052879c 100644 --- a/drivers/clk/mediatek/clk-mt6779-img.c +++ b/drivers/clk/mediatek/clk-mt6779-img.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> #include <dt-bindings/clock/mt6779-clk.h> @@ -56,3 +57,4 @@ static struct platform_driver clk_mt6779_img_drv = { }; builtin_platform_driver(clk_mt6779_img_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-ipe.c b/drivers/clk/mediatek/clk-mt6779-ipe.c index bb519075639c..a1a1c9cb329a 100644 --- a/drivers/clk/mediatek/clk-mt6779-ipe.c +++ b/drivers/clk/mediatek/clk-mt6779-ipe.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> #include <dt-bindings/clock/mt6779-clk.h> @@ -58,3 +59,4 @@ static struct platform_driver clk_mt6779_ipe_drv = { }; builtin_platform_driver(clk_mt6779_ipe_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-mfg.c b/drivers/clk/mediatek/clk-mt6779-mfg.c index c6ee2a89c070..9bf48c56d852 100644 --- a/drivers/clk/mediatek/clk-mt6779-mfg.c +++ b/drivers/clk/mediatek/clk-mt6779-mfg.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> @@ -53,3 +54,4 @@ static struct platform_driver clk_mt6779_mfg_drv = { }; builtin_platform_driver(clk_mt6779_mfg_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-mm.c b/drivers/clk/mediatek/clk-mt6779-mm.c index 059c1a41ac7a..d5ead5531026 100644 --- a/drivers/clk/mediatek/clk-mt6779-mm.c +++ b/drivers/clk/mediatek/clk-mt6779-mm.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> #include <dt-bindings/clock/mt6779-clk.h> @@ -106,3 +107,4 @@ static struct platform_driver clk_mt6779_mm_drv = { }; builtin_platform_driver(clk_mt6779_mm_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-vdec.c b/drivers/clk/mediatek/clk-mt6779-vdec.c index 1900da2586a1..ff7390e4c5f5 100644 --- a/drivers/clk/mediatek/clk-mt6779-vdec.c +++ b/drivers/clk/mediatek/clk-mt6779-vdec.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> @@ -65,3 +66,4 @@ static struct platform_driver clk_mt6779_vdec_drv = { }; builtin_platform_driver(clk_mt6779_vdec_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779-venc.c b/drivers/clk/mediatek/clk-mt6779-venc.c index b41d1f859edc..489bf64346e3 100644 --- a/drivers/clk/mediatek/clk-mt6779-venc.c +++ b/drivers/clk/mediatek/clk-mt6779-venc.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/clk-provider.h> #include <linux/platform_device.h> @@ -56,3 +57,4 @@ static struct platform_driver clk_mt6779_venc_drv = { }; builtin_platform_driver(clk_mt6779_venc_drv); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/mediatek/clk-mt6779.c b/drivers/clk/mediatek/clk-mt6779.c index 6e0d3a166729..9825385c9f94 100644 --- a/drivers/clk/mediatek/clk-mt6779.c +++ b/drivers/clk/mediatek/clk-mt6779.c @@ -4,6 +4,7 @@ * Author: Wendell Lin <wendell.lin@mediatek.com> */ +#include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_device.h> @@ -1314,3 +1315,4 @@ static int __init clk_mt6779_init(void) } arch_initcall(clk_mt6779_init); +MODULE_LICENSE("GPL");
To support COMMON_CLK_MT6779* module build, add MODULE_LICENSE and export necessary symbols. Cc: Stephen Boyd <sboyd@kernel.org> Cc: Hanks Chen <hanks.chen@mediatek.com> Cc: Wendell Lin <wendell.lin@mediatek.com> Cc: Lee Jones <lee.jones@linaro.org> Signed-off-by: Miles Chen <miles.chen@mediatek.com> --- drivers/clk/mediatek/clk-mt6779-aud.c | 2 ++ drivers/clk/mediatek/clk-mt6779-cam.c | 2 ++ drivers/clk/mediatek/clk-mt6779-img.c | 2 ++ drivers/clk/mediatek/clk-mt6779-ipe.c | 2 ++ drivers/clk/mediatek/clk-mt6779-mfg.c | 2 ++ drivers/clk/mediatek/clk-mt6779-mm.c | 2 ++ drivers/clk/mediatek/clk-mt6779-vdec.c | 2 ++ drivers/clk/mediatek/clk-mt6779-venc.c | 2 ++ drivers/clk/mediatek/clk-mt6779.c | 2 ++ 9 files changed, 18 insertions(+)