[PATCH 10/39] drm/imx: dc: ed: Pass struct dc_ed_subdev_match_data via OF match data
From: Marek Vasut <hidden>
Date: 2025-10-11 17:03:22
Also in:
dri-devel, imx, linux-clk, linux-devicetree
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for freescale imx8 display controller, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Liu Ying, Linus Torvalds
Introduce struct dc_ed_subdev_match_data which describes the differences between i.MX8QXP and i.MX95, which in this case is src_sels mapping and address space offsets, and pass it as OF match data into the driver, so the driver can use the match data to apply correct src_sels value to the IP registers on each SoC. This is a preparatory patch for i.MX95 addition. No functional change. Signed-off-by: Marek Vasut <redacted> --- Cc: Abel Vesa <abelvesa@kernel.org> Cc: Conor Dooley <conor+dt@kernel.org> Cc: Fabio Estevam <festevam@gmail.com> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Liu Ying <victor.liu@nxp.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Peng Fan <peng.fan@nxp.com> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Rob Herring <robh@kernel.org> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: imx@lists.linux.dev Cc: linux-arm-kernel@lists.infradead.org Cc: linux-clk@vger.kernel.org --- drivers/gpu/drm/imx/dc/dc-ed.c | 24 +++++++++++++++++++----- drivers/gpu/drm/imx/dc/dc-pe.h | 1 + 2 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/imx/dc/dc-ed.c b/drivers/gpu/drm/imx/dc/dc-ed.c
index 2fdd22a903dec..63dcad30ecced 100644
--- a/drivers/gpu/drm/imx/dc/dc-ed.c
+++ b/drivers/gpu/drm/imx/dc/dc-ed.c@@ -9,6 +9,7 @@ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/regmap.h> #include "dc-drv.h"
@@ -35,7 +36,12 @@ #define CONTROL 0xc #define GAMMAAPPLYENABLE BIT(0) -static const struct dc_subdev_info dc_ed_info[] = { +struct dc_ed_subdev_match_data { + const enum dc_link_id *src_sels; + const struct dc_subdev_info *info; +}; + +static const struct dc_subdev_info dc_ed_info_imx8qxp[] = { { .reg_start = 0x56180980, .id = 0, }, { .reg_start = 0x56180a00, .id = 1, }, { .reg_start = 0x561809c0, .id = 4, },
@@ -106,7 +112,7 @@ static const struct regmap_config dc_ed_cfg_regmap_config = { .max_register = CONTROL, }; -static const enum dc_link_id src_sels[] = { +static const enum dc_link_id src_sels_imx8qxp[] = { LINK_ID_NONE, LINK_ID_CONSTFRAME0, LINK_ID_CONSTFRAME1,
@@ -119,6 +125,11 @@ static const enum dc_link_id src_sels[] = { LINK_ID_LAST /* sentinel */ }; +static const struct dc_ed_subdev_match_data dc_ed_match_data_imx8qxp = { + .src_sels = src_sels_imx8qxp, + .info = dc_ed_info_imx8qxp, +}; + static inline void dc_ed_pec_enable_shden(struct dc_ed *ed) { regmap_write_bits(ed->reg_pec, PIXENGCFG_STATIC, SHDEN, SHDEN);
@@ -144,8 +155,8 @@ void dc_ed_pec_src_sel(struct dc_ed *ed, enum dc_link_id src) { int i = 0; - while (src_sels[i] != LINK_ID_LAST) { - if (src_sels[i++] == src) { + while (ed->src_sels[i] != LINK_ID_LAST) { + if (ed->src_sels[i++] == src) { regmap_write(ed->reg_pec, PIXENGCFG_DYNAMIC, src); return; }
@@ -192,6 +203,8 @@ void dc_ed_init(struct dc_ed *ed) static int dc_ed_bind(struct device *dev, struct device *master, void *data) { + const struct dc_ed_subdev_match_data *dc_ed_match_data = device_get_match_data(dev); + const struct dc_subdev_info *dc_ed_info = dc_ed_match_data->info; struct platform_device *pdev = to_platform_device(dev); struct dc_drm_device *dc_drm = data; struct resource *res_pec;
@@ -227,6 +240,7 @@ static int dc_ed_bind(struct device *dev, struct device *master, void *data) return ed->irq_shdload; ed->dev = dev; + ed->src_sels = dc_ed_match_data->src_sels; id = dc_subdev_get_id(dc_ed_info, res_pec); if (id < 0) {
@@ -274,7 +288,7 @@ static void dc_ed_remove(struct platform_device *pdev) } static const struct of_device_id dc_ed_dt_ids[] = { - { .compatible = "fsl,imx8qxp-dc-extdst" }, + { .compatible = "fsl,imx8qxp-dc-extdst", .data = &dc_ed_match_data_imx8qxp }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, dc_ed_dt_ids);
diff --git a/drivers/gpu/drm/imx/dc/dc-pe.h b/drivers/gpu/drm/imx/dc/dc-pe.h
index 1e1e04cc39d4b..7928f947b0cef 100644
--- a/drivers/gpu/drm/imx/dc/dc-pe.h
+++ b/drivers/gpu/drm/imx/dc/dc-pe.h@@ -56,6 +56,7 @@ struct dc_ed { struct regmap *reg_pec; struct regmap *reg_cfg; int irq_shdload; + const enum dc_link_id *src_sels; }; struct dc_lb {
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2.51.0