drm/sun4i: Constify static structs

A number of static variables are not modified and can be made const to
allow the compiler to put them in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804215337.54594-1-rikard.falkeborn@gmail.com

drivers/gpu/drm/sun4i/sun4i_backend.c

@@ -769,7 +769,7 @@ static const struct sunxi_engine_ops sun4i_backend_engine_ops = {
 	.vblank_quirk			= sun4i_backend_vblank_quirk,
 };
 
-static struct regmap_config sun4i_backend_regmap_config = {
+static const struct regmap_config sun4i_backend_regmap_config = {
 	.reg_bits	= 32,
 	.val_bits	= 32,
 	.reg_stride	= 4,

drivers/gpu/drm/sun4i/sun4i_framebuffer.c

@@ -35,7 +35,7 @@ static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
 	.fb_create		= drm_gem_fb_create,
 };
 
-static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
+static const struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
 	.atomic_commit_tail	= drm_atomic_helper_commit_tail_rpm,
 };
 

drivers/gpu/drm/sun4i/sun4i_frontend.c

@@ -545,7 +545,7 @@ int sun4i_frontend_enable(struct sun4i_frontend *frontend)
 }
 EXPORT_SYMBOL(sun4i_frontend_enable);
 
-static struct regmap_config sun4i_frontend_regmap_config = {
+static const struct regmap_config sun4i_frontend_regmap_config = {
 	.reg_bits	= 32,
 	.val_bits	= 32,
 	.reg_stride	= 4,

drivers/gpu/drm/sun4i/sun4i_lvds.c

@@ -47,7 +47,7 @@ static int sun4i_lvds_get_modes(struct drm_connector *connector)
 	return drm_panel_get_modes(lvds->panel, connector);
 }
 
-static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = {
+static const struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = {
 	.get_modes	= sun4i_lvds_get_modes,
 };
 

drivers/gpu/drm/sun4i/sun4i_rgb.c

@@ -138,7 +138,7 @@ static enum drm_mode_status sun4i_rgb_mode_valid(struct drm_encoder *crtc,
 	return MODE_OK;
 }
 
-static struct drm_connector_helper_funcs sun4i_rgb_con_helper_funcs = {
+static const struct drm_connector_helper_funcs sun4i_rgb_con_helper_funcs = {
 	.get_modes	= sun4i_rgb_get_modes,
 };
 
@@ -180,7 +180,7 @@ static void sun4i_rgb_encoder_disable(struct drm_encoder *encoder)
 	}
 }
 
-static struct drm_encoder_helper_funcs sun4i_rgb_enc_helper_funcs = {
+static const struct drm_encoder_helper_funcs sun4i_rgb_enc_helper_funcs = {
 	.disable	= sun4i_rgb_encoder_disable,
 	.enable		= sun4i_rgb_encoder_enable,
 	.mode_valid	= sun4i_rgb_mode_valid,

drivers/gpu/drm/sun4i/sun4i_tcon.c

@@ -825,7 +825,7 @@ static int sun4i_tcon_init_irq(struct device *dev,
 	return 0;
 }
 
-static struct regmap_config sun4i_tcon_regmap_config = {
+static const struct regmap_config sun4i_tcon_regmap_config = {
 	.reg_bits	= 32,
 	.val_bits	= 32,
 	.reg_stride	= 4,

drivers/gpu/drm/sun4i/sun4i_tv.c

@@ -468,7 +468,7 @@ static void sun4i_tv_mode_set(struct drm_encoder *encoder,
 	regmap_write(tv->regs, SUN4I_TVE_SLAVE_REG, 0);
 }
 
-static struct drm_encoder_helper_funcs sun4i_tv_helper_funcs = {
+static const struct drm_encoder_helper_funcs sun4i_tv_helper_funcs = {
 	.disable	= sun4i_tv_disable,
 	.enable		= sun4i_tv_enable,
 	.mode_set	= sun4i_tv_mode_set,
@@ -504,7 +504,7 @@ static int sun4i_tv_comp_mode_valid(struct drm_connector *connector,
 	return MODE_OK;
 }
 
-static struct drm_connector_helper_funcs sun4i_tv_comp_connector_helper_funcs = {
+static const struct drm_connector_helper_funcs sun4i_tv_comp_connector_helper_funcs = {
 	.get_modes	= sun4i_tv_comp_get_modes,
 	.mode_valid	= sun4i_tv_comp_mode_valid,
 };
@@ -523,7 +523,7 @@ static const struct drm_connector_funcs sun4i_tv_comp_connector_funcs = {
 	.atomic_destroy_state	= drm_atomic_helper_connector_destroy_state,
 };
 
-static struct regmap_config sun4i_tv_regmap_config = {
+static const struct regmap_config sun4i_tv_regmap_config = {
 	.reg_bits	= 32,
 	.val_bits	= 32,
 	.reg_stride	= 4,

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c

@@ -820,7 +820,7 @@ static int sun6i_dsi_get_modes(struct drm_connector *connector)
 	return drm_panel_get_modes(dsi->panel, connector);
 }
 
-static struct drm_connector_helper_funcs sun6i_dsi_connector_helper_funcs = {
+static const struct drm_connector_helper_funcs sun6i_dsi_connector_helper_funcs = {
 	.get_modes	= sun6i_dsi_get_modes,
 };
 

drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c

@@ -534,7 +534,7 @@ void sun8i_hdmi_phy_set_ops(struct sun8i_hdmi_phy *phy,
 	}
 }
 
-static struct regmap_config sun8i_hdmi_phy_regmap_config = {
+static const struct regmap_config sun8i_hdmi_phy_regmap_config = {
 	.reg_bits	= 32,
 	.val_bits	= 32,
 	.reg_stride	= 4,

drivers/gpu/drm/sun4i/sun8i_mixer.c

@@ -303,7 +303,7 @@ static const struct sunxi_engine_ops sun8i_engine_ops = {
 	.layers_init	= sun8i_layers_init,
 };
 
-static struct regmap_config sun8i_mixer_regmap_config = {
+static const struct regmap_config sun8i_mixer_regmap_config = {
 	.reg_bits	= 32,
 	.val_bits	= 32,
 	.reg_stride	= 4,

drivers/gpu/drm/sun4i/sun8i_ui_layer.c

@@ -298,7 +298,7 @@ static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
 			      true, zpos, old_zpos);
 }
 
-static struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
+static const struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
 	.prepare_fb	= drm_gem_fb_prepare_fb,
 	.atomic_check	= sun8i_ui_layer_atomic_check,
 	.atomic_disable	= sun8i_ui_layer_atomic_disable,

drivers/gpu/drm/sun4i/sun8i_vi_layer.c

@@ -401,7 +401,7 @@ static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
 			      true, zpos, old_zpos);
 }
 
-static struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
+static const struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
 	.prepare_fb	= drm_gem_fb_prepare_fb,
 	.atomic_check	= sun8i_vi_layer_atomic_check,
 	.atomic_disable	= sun8i_vi_layer_atomic_disable,