On Thu, Jan 6, 2022 at 4:48 PM Chunfeng Yun chunfeng.yun@mediatek.com wrote:
On Mon, 2022-01-03 at 15:53 +0100, AngeloGioacchino Del Regno wrote:
All the headers for phy-mtk-mipi-{dsi,dsi-mt8173,dsi-mt8183}.c were included from phy-mtk-mipi-dsi.h, but this isn't optimal: in order to increase readability and sensibly reduce build times, the inclusions should be done per-file, also avoiding to include unused headers and should not be implicit.
For this reason, move the inclusions to each file and remove unused ones.
Signed-off-by: AngeloGioacchino Del Regno < angelogioacchino.delregno@collabora.com>
drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c | 4 ++++ drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c | 4 ++++ drivers/phy/mediatek/phy-mtk-mipi-dsi.c | 7 +++++++ drivers/phy/mediatek/phy-mtk-mipi-dsi.h | 10 ++-------- 4 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c index 95a0d9a3cca7..59f028da9d3e 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8173.c @@ -4,7 +4,11 @@
- Author: jitao.shi jitao.shi@mediatek.com
*/
+#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/module.h> #include <linux/regmap.h> +#include <linux/phy/phy.h> #include "phy-mtk-mipi-dsi.h"
#define MIPITX_DSI_CON 0x00 diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c index 01b59527669e..6c6b192485ba 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c @@ -4,7 +4,11 @@
- Author: jitao.shi jitao.shi@mediatek.com
*/
+#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/module.h> #include <linux/regmap.h> +#include <linux/phy/phy.h> #include "phy-mtk-mipi-dsi.h"
#define MIPITX_LANE_CON 0x000c diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c index 51b1b1d4ad38..6f7425b0bf5b 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.c +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.c @@ -3,7 +3,14 @@
- Copyright (c) 2015 MediaTek Inc.
*/
+#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/module.h> +#include <linux/nvmem-consumer.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> #include <linux/regmap.h> +#include <linux/phy/phy.h> #include "phy-mtk-mipi-dsi.h"
inline struct mtk_mipi_tx *mtk_mipi_tx_from_clk_hw(struct clk_hw *hw) diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi.h b/drivers/phy/mediatek/phy-mtk-mipi-dsi.h index 8d32e9027a15..4eb5fc91e083 100644 --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi.h +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi.h @@ -7,16 +7,10 @@ #ifndef _MTK_MIPI_TX_H #define _MTK_MIPI_TX_H
-#include <linux/clk.h> #include <linux/clk-provider.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/nvmem-consumer.h> -#include <linux/of_device.h> -#include <linux/platform_device.h> +#include <linux/types.h> +#include <linux/regmap.h> #include <linux/phy/phy.h> -#include <linux/slab.h>
I don't think it's good idea to move the common headers into .c files
Header files should be included directly by the file that uses facilities provided by said header file. Required ones should not be transitively included through other header files, as that introduces a subtle dependency.
Also, needlessly including header files in places that aren't using them increases build time. See the 2000+ patch series from Ingo Molnar [1] increasing build performance by cleaning up header files.
ChenYu
[1] https://lwn.net/ml/linux-kernel/YdIfz+LMewetSaEB@gmail.com/
struct mtk_mipitx_data { const u32 mppll_preserve;
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