[PATCH v3] clk: spacemit: Fix module build for spacemit common ccu driver

[PATCH v3] clk: spacemit: Fix module build for spacemit common ccu driver

[Inochi Amaoto]

For build spacemit common clock driver as a module, the build
process require MODULE_LICENSE()/MODULE_DESCRIPTION() globally
and EXPORT_SYMBOL() for every exposed symbol. Otherwise, the
build will fail.

Add these missing hints, so the driver can be built as a module.

Fixes: 1b72c59db0ad ("clk: spacemit: Add clock support for SpacemiT K1 SoC")
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
 drivers/clk/spacemit/ccu-k1.c  | 1 +
 drivers/clk/spacemit/ccu_ddn.c | 1 +
 drivers/clk/spacemit/ccu_mix.c | 9 +++++++++
 drivers/clk/spacemit/ccu_pll.c | 5 +++++
 4 files changed, 16 insertions(+)

diff --git a/drivers/clk/spacemit/ccu-k1.c b/drivers/clk/spacemit/ccu-k1.c
index 4761bc1e3b6e..01d9485b615d 100644
--- a/drivers/clk/spacemit/ccu-k1.c
+++ b/drivers/clk/spacemit/ccu-k1.c
@@ -1204,6 +1204,7 @@ static struct platform_driver k1_ccu_driver = {
 };
 module_platform_driver(k1_ccu_driver);
 
+MODULE_IMPORT_NS("CLK_SPACEMIT");
 MODULE_DESCRIPTION("SpacemiT K1 CCU driver");
 MODULE_AUTHOR("Haylen Chu <heylenay@4d2.org>");
 MODULE_LICENSE("GPL");
diff --git a/drivers/clk/spacemit/ccu_ddn.c b/drivers/clk/spacemit/ccu_ddn.c
index 5b16e273bee5..b5540e0781ff 100644
--- a/drivers/clk/spacemit/ccu_ddn.c
+++ b/drivers/clk/spacemit/ccu_ddn.c
@@ -84,3 +84,4 @@ const struct clk_ops spacemit_ccu_ddn_ops = {
 	.determine_rate = ccu_ddn_determine_rate,
 	.set_rate	= ccu_ddn_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_ddn_ops, "CLK_SPACEMIT");
diff --git a/drivers/clk/spacemit/ccu_mix.c b/drivers/clk/spacemit/ccu_mix.c
index 7b7990875372..67f8b12b4f5b 100644
--- a/drivers/clk/spacemit/ccu_mix.c
+++ b/drivers/clk/spacemit/ccu_mix.c
@@ -198,24 +198,28 @@ const struct clk_ops spacemit_ccu_gate_ops = {
 	.enable		= ccu_gate_enable,
 	.is_enabled	= ccu_gate_is_enabled,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_gate_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_factor_ops = {
 	.determine_rate = ccu_factor_determine_rate,
 	.recalc_rate	= ccu_factor_recalc_rate,
 	.set_rate	= ccu_factor_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_factor_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_mux_ops = {
 	.determine_rate = ccu_mix_determine_rate,
 	.get_parent	= ccu_mux_get_parent,
 	.set_parent	= ccu_mux_set_parent,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_mux_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_div_ops = {
 	.determine_rate = ccu_mix_determine_rate,
 	.recalc_rate	= ccu_div_recalc_rate,
 	.set_rate	= ccu_mix_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_div_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_factor_gate_ops = {
 	.disable	= ccu_gate_disable,
@@ -226,6 +230,7 @@ const struct clk_ops spacemit_ccu_factor_gate_ops = {
 	.recalc_rate	= ccu_factor_recalc_rate,
 	.set_rate	= ccu_factor_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_factor_gate_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_mux_gate_ops = {
 	.disable	= ccu_gate_disable,
@@ -236,6 +241,7 @@ const struct clk_ops spacemit_ccu_mux_gate_ops = {
 	.get_parent	= ccu_mux_get_parent,
 	.set_parent	= ccu_mux_set_parent,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_mux_gate_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_div_gate_ops = {
 	.disable	= ccu_gate_disable,
@@ -246,6 +252,7 @@ const struct clk_ops spacemit_ccu_div_gate_ops = {
 	.recalc_rate	= ccu_div_recalc_rate,
 	.set_rate	= ccu_mix_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_div_gate_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_mux_div_gate_ops = {
 	.disable	= ccu_gate_disable,
@@ -259,6 +266,7 @@ const struct clk_ops spacemit_ccu_mux_div_gate_ops = {
 	.recalc_rate	= ccu_div_recalc_rate,
 	.set_rate	= ccu_mix_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_mux_div_gate_ops, "CLK_SPACEMIT");
 
 const struct clk_ops spacemit_ccu_mux_div_ops = {
 	.get_parent	= ccu_mux_get_parent,
@@ -268,3 +276,4 @@ const struct clk_ops spacemit_ccu_mux_div_ops = {
 	.recalc_rate	= ccu_div_recalc_rate,
 	.set_rate	= ccu_mix_set_rate,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_mux_div_ops, "CLK_SPACEMIT");
diff --git a/drivers/clk/spacemit/ccu_pll.c b/drivers/clk/spacemit/ccu_pll.c
index d92f0dae65a4..7389202c4831 100644
--- a/drivers/clk/spacemit/ccu_pll.c
+++ b/drivers/clk/spacemit/ccu_pll.c
@@ -7,6 +7,7 @@
 #include <linux/clk-provider.h>
 #include <linux/math.h>
 #include <linux/regmap.h>
+#include <linux/module.h>
 
 #include "ccu_common.h"
 #include "ccu_pll.h"
@@ -157,3 +158,7 @@ const struct clk_ops spacemit_ccu_pll_ops = {
 	.determine_rate = ccu_pll_determine_rate,
 	.is_enabled	= ccu_pll_is_enabled,
 };
+EXPORT_SYMBOL_NS_GPL(spacemit_ccu_pll_ops, "CLK_SPACEMIT");
+
+MODULE_DESCRIPTION("SpacemiT CCU common clock driver");
+MODULE_LICENSE("GPL");
-- 
2.52.0

Re: [PATCH v3] clk: spacemit: Fix module build for spacemit common ccu driver

[Yixun Lan]

Hi Inochi,

On 08:42 Thu 18 Dec     , Inochi Amaoto wrote:
> For build spacemit common clock driver as a module, the build
> process require MODULE_LICENSE()/MODULE_DESCRIPTION() globally
> and EXPORT_SYMBOL() for every exposed symbol. Otherwise, the
> build will fail.
> 
> Add these missing hints, so the driver can be built as a module.
> 
> Fixes: 1b72c59db0ad ("clk: spacemit: Add clock support for SpacemiT K1 SoC")
> Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> ---
>  drivers/clk/spacemit/ccu-k1.c  | 1 +
>  drivers/clk/spacemit/ccu_ddn.c | 1 +
>  drivers/clk/spacemit/ccu_mix.c | 9 +++++++++
>  drivers/clk/spacemit/ccu_pll.c | 5 +++++
>  4 files changed, 16 insertions(+)
> 
[snip]..
> diff --git a/drivers/clk/spacemit/ccu_pll.c b/drivers/clk/spacemit/ccu_pll.c
> index d92f0dae65a4..7389202c4831 100644
> --- a/drivers/clk/spacemit/ccu_pll.c
> +++ b/drivers/clk/spacemit/ccu_pll.c
> @@ -7,6 +7,7 @@
>  #include <linux/clk-provider.h>
>  #include <linux/math.h>
>  #include <linux/regmap.h>
> +#include <linux/module.h>
>  
>  #include "ccu_common.h"
>  #include "ccu_pll.h"
> @@ -157,3 +158,7 @@ const struct clk_ops spacemit_ccu_pll_ops = {
>  	.determine_rate = ccu_pll_determine_rate,
>  	.is_enabled	= ccu_pll_is_enabled,
>  };
> +EXPORT_SYMBOL_NS_GPL(spacemit_ccu_pll_ops, "CLK_SPACEMIT");
> +
..
> +MODULE_DESCRIPTION("SpacemiT CCU common clock driver");
> +MODULE_LICENSE("GPL");
can you creat a separate file ccu_commom.c, and put above change there?

the reason I request this is that I'm trying to refactor the driver and
will extract common code into file ccu_common.c, with this coming change,
it's more proper to do this adjustment, which will avoid future code movement, 
refer the link [1] of the review of K3 clock for why I'm requesting this

to Stephen, if you have no objection, I'd hope this patch can be taken via v6.19-rc2-fixes,
and then I will do other follow-up clock patches on top of it, I can send a PR for this fix..

if with above change, please add my R-b
Reviewed-by: Yixun Lan <dlan@gentoo.org>


Link: https://lore.kernel.org/all/aTo8sCPpVM1o9PKX@pie/ [1]
-- 

Yixun Lan (dlan)