Hi,
On Tue, Feb 13, 2018 at 02:00:20PM +0200, Laurent Pinchart wrote:
> The anoonymous dss structure in dss.c is the top-level component in the
> omapdss driver. As such it should store all internal instance-specific
> data that is currently stored in global variables. This however requires
> both naming the structure to pass it around functions, and accessing it
> from various locations in the omapdss driver. While we could implement
> get and set functions for every field that needs to be accessed outside
> of dss.c, that would introduce overhead and complexity that we could
> avoid by exposing the structure to internal components of the omapdss
> driver. Do so to prepare for removal of global variables.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx>
-- Sebastian
> drivers/gpu/drm/omapdrm/dss/dss.c | 29 +----------------------------
> drivers/gpu/drm/omapdrm/dss/dss.h | 29 +++++++++++++++++++++++++++++
> 2 files changed, 30 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
> index d5490336e7c7..245d8c0ae461 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dss.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dss.c
> @@ -48,8 +48,6 @@
> #include "omapdss.h"
> #include "dss.h"
>
> -#define DSS_SZ_REGS SZ_512
> -
> struct dss_reg {
> u16 idx;
> };
> @@ -90,32 +88,7 @@ struct dss_features {
> bool has_lcd_clk_src;
> };
>
> -static struct {
> - struct platform_device *pdev;
> - void __iomem *base;
> - struct regmap *syscon_pll_ctrl;
> - u32 syscon_pll_ctrl_offset;
> -
> - struct clk *parent_clk;
> - struct clk *dss_clk;
> - unsigned long dss_clk_rate;
> -
> - unsigned long cache_req_pck;
> - unsigned long cache_prate;
> - struct dispc_clock_info cache_dispc_cinfo;
> -
> - enum dss_clk_source dsi_clk_source[MAX_NUM_DSI];
> - enum dss_clk_source dispc_clk_source;
> - enum dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS];
> -
> - bool ctx_valid;
> - u32 ctx[DSS_SZ_REGS / sizeof(u32)];
> -
> - const struct dss_features *feat;
> -
> - struct dss_pll *video1_pll;
> - struct dss_pll *video2_pll;
> -} dss;
> +static struct dss_device dss;
>
> static const char * const dss_generic_clk_source_names[] = {
> [DSS_CLK_SRC_FCK] = "FCK",
> diff --git a/drivers/gpu/drm/omapdrm/dss/dss.h b/drivers/gpu/drm/omapdrm/dss/dss.h
> index 7f3fa5330408..257ff7c62764 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dss.h
> +++ b/drivers/gpu/drm/omapdrm/dss/dss.h
> @@ -235,6 +235,35 @@ struct dss_lcd_mgr_config {
> struct seq_file;
> struct platform_device;
>
> +#define DSS_SZ_REGS SZ_512
> +
> +struct dss_device {
> + struct platform_device *pdev;
> + void __iomem *base;
> + struct regmap *syscon_pll_ctrl;
> + u32 syscon_pll_ctrl_offset;
> +
> + struct clk *parent_clk;
> + struct clk *dss_clk;
> + unsigned long dss_clk_rate;
> +
> + unsigned long cache_req_pck;
> + unsigned long cache_prate;
> + struct dispc_clock_info cache_dispc_cinfo;
> +
> + enum dss_clk_source dsi_clk_source[MAX_NUM_DSI];
> + enum dss_clk_source dispc_clk_source;
> + enum dss_clk_source lcd_clk_source[MAX_DSS_LCD_MANAGERS];
> +
> + bool ctx_valid;
> + u32 ctx[DSS_SZ_REGS / sizeof(u32)];
> +
> + const struct dss_features *feat;
> +
> + struct dss_pll *video1_pll;
> + struct dss_pll *video2_pll;
> +};
> +
> /* core */
> static inline int dss_set_min_bus_tput(struct device *dev, unsigned long tput)
> {
> --
> Regards,
>
> Laurent Pinchart
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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