Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753884AbdCONwq (ORCPT ); Wed, 15 Mar 2017 09:52:46 -0400 Received: from mail-qk0-f169.google.com ([209.85.220.169]:34902 "EHLO mail-qk0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751689AbdCONwn (ORCPT ); Wed, 15 Mar 2017 09:52:43 -0400 Date: Wed, 15 Mar 2017 09:52:34 -0400 From: Sean Paul To: Jeffy Chen Cc: Mark Yao , Andrzej Hajda , Guenter Roeck , Brian Norris , Tomasz Figa , Douglas Anderson , Sean Paul , Heiko Stuebner , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, David Airlie , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v3] drm/rockchip: Refactor the component match logic. Message-ID: <20170315135234.GD20329@art_vandelay> References: <1489573247-9628-1-git-send-email-jeffy.chen@rock-chips.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1489573247-9628-1-git-send-email-jeffy.chen@rock-chips.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 16653 Lines: 484 On Wed, Mar 15, 2017 at 06:20:47PM +0800, Jeffy Chen wrote: > Currently we are adding all components from the dts, if one of their > drivers been disabled, we would not be able to bring up others. > > Refactor component match logic, follow exynos drm. > > Signed-off-by: Jeffy Chen > Reviewed-by: Andrzej Hajda Still looks good to me. If Mark doesn't object in the next 24 hours, I'll apply. Sean > > --- > > Changes in v3: > Address Andrzej Hajda 's comments. > > Changes in v2: > Address Sean Paul 's comments. > > drivers/gpu/drm/rockchip/Kconfig | 10 +- > drivers/gpu/drm/rockchip/Makefile | 16 +-- > drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 9 +- > drivers/gpu/drm/rockchip/cdn-dp-core.c | 8 +- > drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 8 +- > drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 10 +- > drivers/gpu/drm/rockchip/inno_hdmi.c | 10 +- > drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 154 ++++++++++++++++-------- > drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 6 + > drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 8 +- > 10 files changed, 131 insertions(+), 108 deletions(-) > > diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig > index 0e4eb84..50c41c0 100644 > --- a/drivers/gpu/drm/rockchip/Kconfig > +++ b/drivers/gpu/drm/rockchip/Kconfig > @@ -13,7 +13,7 @@ config DRM_ROCKCHIP > IP found on the SoC. > > config ROCKCHIP_ANALOGIX_DP > - tristate "Rockchip specific extensions for Analogix DP driver" > + bool "Rockchip specific extensions for Analogix DP driver" > depends on DRM_ROCKCHIP > select DRM_ANALOGIX_DP > help > @@ -22,7 +22,7 @@ config ROCKCHIP_ANALOGIX_DP > on RK3288 based SoC, you should selet this option. > > config ROCKCHIP_CDN_DP > - tristate "Rockchip cdn DP" > + bool "Rockchip cdn DP" > depends on DRM_ROCKCHIP > depends on EXTCON > select SND_SOC_HDMI_CODEC if SND_SOC > @@ -33,7 +33,7 @@ config ROCKCHIP_CDN_DP > option. > > config ROCKCHIP_DW_HDMI > - tristate "Rockchip specific extensions for Synopsys DW HDMI" > + bool "Rockchip specific extensions for Synopsys DW HDMI" > depends on DRM_ROCKCHIP > select DRM_DW_HDMI > help > @@ -43,7 +43,7 @@ config ROCKCHIP_DW_HDMI > option. > > config ROCKCHIP_DW_MIPI_DSI > - tristate "Rockchip specific extensions for Synopsys DW MIPI DSI" > + bool "Rockchip specific extensions for Synopsys DW MIPI DSI" > depends on DRM_ROCKCHIP > select DRM_MIPI_DSI > help > @@ -53,7 +53,7 @@ config ROCKCHIP_DW_MIPI_DSI > option. > > config ROCKCHIP_INNO_HDMI > - tristate "Rockchip specific extensions for Innosilicon HDMI" > + bool "Rockchip specific extensions for Innosilicon HDMI" > depends on DRM_ROCKCHIP > help > This selects support for Rockchip SoC specific extensions > diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile > index c931e2a..fa8dc9d 100644 > --- a/drivers/gpu/drm/rockchip/Makefile > +++ b/drivers/gpu/drm/rockchip/Makefile > @@ -3,14 +3,14 @@ > # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. > > rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o \ > - rockchip_drm_gem.o rockchip_drm_psr.o rockchip_drm_vop.o > + rockchip_drm_gem.o rockchip_drm_psr.o \ > + rockchip_drm_vop.o rockchip_vop_reg.o > rockchipdrm-$(CONFIG_DRM_FBDEV_EMULATION) += rockchip_drm_fbdev.o > > -obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o > -obj-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp.o > -cdn-dp-objs := cdn-dp-core.o cdn-dp-reg.o > -obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o > -obj-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o > -obj-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o > +rockchipdrm-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o > +rockchipdrm-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp-core.o cdn-dp-reg.o > +rockchipdrm-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o > +rockchipdrm-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o > +rockchipdrm-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o > > -obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_vop_reg.o > +obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o > diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > index 8548e82..91ebe5c 100644 > --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > @@ -507,7 +507,7 @@ static const struct of_device_id rockchip_dp_dt_ids[] = { > }; > MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids); > > -static struct platform_driver rockchip_dp_driver = { > +struct platform_driver rockchip_dp_driver = { > .probe = rockchip_dp_probe, > .remove = rockchip_dp_remove, > .driver = { > @@ -516,10 +516,3 @@ static struct platform_driver rockchip_dp_driver = { > .of_match_table = of_match_ptr(rockchip_dp_dt_ids), > }, > }; > - > -module_platform_driver(rockchip_dp_driver); > - > -MODULE_AUTHOR("Yakir Yang "); > -MODULE_AUTHOR("Jeff chen "); > -MODULE_DESCRIPTION("Rockchip Specific Analogix-DP Driver Extension"); > -MODULE_LICENSE("GPL v2"); > diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c > index fd79a70..e1796d0 100644 > --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c > +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c > @@ -1243,7 +1243,7 @@ static const struct dev_pm_ops cdn_dp_pm_ops = { > cdn_dp_resume) > }; > > -static struct platform_driver cdn_dp_driver = { > +struct platform_driver cdn_dp_driver = { > .probe = cdn_dp_probe, > .remove = cdn_dp_remove, > .shutdown = cdn_dp_shutdown, > @@ -1254,9 +1254,3 @@ static struct platform_driver cdn_dp_driver = { > .pm = &cdn_dp_pm_ops, > }, > }; > - > -module_platform_driver(cdn_dp_driver); > - > -MODULE_AUTHOR("Chris Zhong "); > -MODULE_DESCRIPTION("cdn DP Driver"); > -MODULE_LICENSE("GPL v2"); > diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c > index d9aa382..65a474f 100644 > --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c > +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c > @@ -1165,7 +1165,7 @@ static int dw_mipi_dsi_remove(struct platform_device *pdev) > return 0; > } > > -static struct platform_driver dw_mipi_dsi_driver = { > +struct platform_driver dw_mipi_dsi_driver = { > .probe = dw_mipi_dsi_probe, > .remove = dw_mipi_dsi_remove, > .driver = { > @@ -1173,9 +1173,3 @@ static struct platform_driver dw_mipi_dsi_driver = { > .name = DRIVER_NAME, > }, > }; > -module_platform_driver(dw_mipi_dsi_driver); > - > -MODULE_DESCRIPTION("ROCKCHIP MIPI DSI host controller driver"); > -MODULE_AUTHOR("Chris Zhong "); > -MODULE_LICENSE("GPL"); > -MODULE_ALIAS("platform:" DRIVER_NAME); > diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > index a6d4a02..976ea79 100644 > --- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > +++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c > @@ -326,7 +326,7 @@ static int dw_hdmi_rockchip_remove(struct platform_device *pdev) > return 0; > } > > -static struct platform_driver dw_hdmi_rockchip_pltfm_driver = { > +struct platform_driver dw_hdmi_rockchip_pltfm_driver = { > .probe = dw_hdmi_rockchip_probe, > .remove = dw_hdmi_rockchip_remove, > .driver = { > @@ -334,11 +334,3 @@ static struct platform_driver dw_hdmi_rockchip_pltfm_driver = { > .of_match_table = dw_hdmi_rockchip_dt_ids, > }, > }; > - > -module_platform_driver(dw_hdmi_rockchip_pltfm_driver); > - > -MODULE_AUTHOR("Andy Yan "); > -MODULE_AUTHOR("Yakir Yang "); > -MODULE_DESCRIPTION("Rockchip Specific DW-HDMI Driver Extension"); > -MODULE_LICENSE("GPL"); > -MODULE_ALIAS("platform:dwhdmi-rockchip"); > diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c > index 006260d..7d9b75e 100644 > --- a/drivers/gpu/drm/rockchip/inno_hdmi.c > +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c > @@ -923,7 +923,7 @@ static const struct of_device_id inno_hdmi_dt_ids[] = { > }; > MODULE_DEVICE_TABLE(of, inno_hdmi_dt_ids); > > -static struct platform_driver inno_hdmi_driver = { > +struct platform_driver inno_hdmi_driver = { > .probe = inno_hdmi_probe, > .remove = inno_hdmi_remove, > .driver = { > @@ -931,11 +931,3 @@ static struct platform_driver inno_hdmi_driver = { > .of_match_table = inno_hdmi_dt_ids, > }, > }; > - > -module_platform_driver(inno_hdmi_driver); > - > -MODULE_AUTHOR("Zheng Yang "); > -MODULE_AUTHOR("Yakir Yang "); > -MODULE_DESCRIPTION("Rockchip Specific INNO-HDMI Driver"); > -MODULE_LICENSE("GPL v2"); > -MODULE_ALIAS("platform:innohdmi-rockchip"); > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > index b360e62..9cb295b 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c > @@ -356,34 +356,44 @@ static const struct dev_pm_ops rockchip_drm_pm_ops = { > rockchip_drm_sys_resume) > }; > > -static int compare_of(struct device *dev, void *data) > -{ > - struct device_node *np = data; > +#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL) > + > +static struct platform_driver *rockchip_drm_comp_drvs[] = { > + &vop_platform_driver, > + DRV_PTR(rockchip_dp_driver, CONFIG_ROCKCHIP_ANALOGIX_DP), > + DRV_PTR(cdn_dp_driver, CONFIG_ROCKCHIP_CDN_DP), > + DRV_PTR(dw_hdmi_rockchip_pltfm_driver, CONFIG_ROCKCHIP_DW_HDMI), > + DRV_PTR(dw_mipi_dsi_driver, CONFIG_ROCKCHIP_DW_MIPI_DSI), > + DRV_PTR(inno_hdmi_driver, CONFIG_ROCKCHIP_INNO_HDMI), > +}; > > - return dev->of_node == np; > +static int compare_dev(struct device *dev, void *data) > +{ > + return dev == (struct device *)data; > } > > -static void rockchip_add_endpoints(struct device *dev, > - struct component_match **match, > - struct device_node *port) > +static struct component_match *rockchip_drm_match_add(struct device *dev) > { > - struct device_node *ep, *remote; > + struct component_match *match = NULL; > + int i; > > - for_each_child_of_node(port, ep) { > - remote = of_graph_get_remote_port_parent(ep); > - if (!remote || !of_device_is_available(remote)) { > - of_node_put(remote); > - continue; > - } else if (!of_device_is_available(remote->parent)) { > - dev_warn(dev, "parent device of %s is not available\n", > - remote->full_name); > - of_node_put(remote); > - continue; > - } > + for (i = 0; i < ARRAY_SIZE(rockchip_drm_comp_drvs); i++) { > + struct platform_driver *drv = rockchip_drm_comp_drvs[i]; > + struct device *p = NULL, *d; > + > + do { > + d = bus_find_device(&platform_bus_type, p, &drv->driver, > + (void *)platform_bus_type.match); > + put_device(p); > + p = d; > > - drm_of_component_match_add(dev, match, compare_of, remote); > - of_node_put(remote); > + if (!d) > + break; > + component_match_add(dev, &match, compare_dev, d); > + } while (true); > } > + > + return match ?: ERR_PTR(-ENODEV); > } > > static const struct component_master_ops rockchip_drm_ops = { > @@ -391,21 +401,16 @@ static const struct component_master_ops rockchip_drm_ops = { > .unbind = rockchip_drm_unbind, > }; > > -static int rockchip_drm_platform_probe(struct platform_device *pdev) > +static int rockchip_drm_platform_of_probe(struct device *dev) > { > - struct device *dev = &pdev->dev; > - struct component_match *match = NULL; > struct device_node *np = dev->of_node; > struct device_node *port; > + bool found = false; > int i; > > if (!np) > return -ENODEV; > - /* > - * Bind the crtc ports first, so that > - * drm_of_find_possible_crtcs called from encoder .bind callbacks > - * works as expected. > - */ > + > for (i = 0;; i++) { > struct device_node *iommu; > > @@ -429,9 +434,9 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev) > is_support_iommu = false; > } > > + found = true; > + > of_node_put(iommu); > - drm_of_component_match_add(dev, &match, compare_of, > - port->parent); > of_node_put(port); > } > > @@ -440,27 +445,27 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev) > return -ENODEV; > } > > - if (!match) { > + if (!found) { > dev_err(dev, "No available vop found for display-subsystem.\n"); > return -ENODEV; > } > - /* > - * For each bound crtc, bind the encoders attached to its > - * remote endpoint. > - */ > - for (i = 0;; i++) { > - port = of_parse_phandle(np, "ports", i); > - if (!port) > - break; > > - if (!of_device_is_available(port->parent)) { > - of_node_put(port); > - continue; > - } > + return 0; > +} > > - rockchip_add_endpoints(dev, &match, port); > - of_node_put(port); > - } > +static int rockchip_drm_platform_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct component_match *match = NULL; > + int ret; > + > + ret = rockchip_drm_platform_of_probe(dev); > + if (ret) > + return ret; > + > + match = rockchip_drm_match_add(dev); > + if (IS_ERR(match)) > + return PTR_ERR(match); > > return component_master_add_with_match(dev, &rockchip_drm_ops, match); > } > @@ -488,7 +493,60 @@ static struct platform_driver rockchip_drm_platform_driver = { > }, > }; > > -module_platform_driver(rockchip_drm_platform_driver); > +static void rockchip_drm_unregister_drivers(void) > +{ > + int i; > + > + for (i = ARRAY_SIZE(rockchip_drm_comp_drvs) - 1; i >= 0; i--) > + platform_driver_unregister(rockchip_drm_comp_drvs[i]); > +} > + > +static int rockchip_drm_register_drivers(void) > +{ > + int i, ret; > + > + for (i = 0; i < ARRAY_SIZE(rockchip_drm_comp_drvs); i++) { > + ret = platform_driver_register(rockchip_drm_comp_drvs[i]); > + if (ret) > + goto err_unreg; > + } > + > + return 0; > + > +err_unreg: > + while (i-- > 0) > + platform_driver_unregister(rockchip_drm_comp_drvs[i]); > + return ret; > +} > + > +static int __init rockchip_drm_init(void) > +{ > + int ret; > + > + ret = rockchip_drm_register_drivers(); > + if (ret) > + return ret; > + > + ret = platform_driver_register(&rockchip_drm_platform_driver); > + if (ret) > + goto err_unreg_drivers; > + > + return 0; > + > +err_unreg_drivers: > + rockchip_drm_unregister_drivers(); > + return ret; > +} > + > +static void __exit rockchip_drm_fini(void) > +{ > + platform_driver_unregister(&rockchip_drm_platform_driver); > + > + rockchip_drm_unregister_drivers(); > +} > + > +module_init(rockchip_drm_init); > +module_exit(rockchip_drm_fini); > > MODULE_AUTHOR("Mark Yao "); > MODULE_DESCRIPTION("ROCKCHIP DRM Driver"); > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h > index adc3930..f46e1d0 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h > @@ -79,4 +79,10 @@ void rockchip_drm_dma_detach_device(struct drm_device *drm_dev, > int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num, > unsigned int mstimeout); > > +extern struct platform_driver cdn_dp_driver; > +extern struct platform_driver dw_hdmi_rockchip_pltfm_driver; > +extern struct platform_driver dw_mipi_dsi_driver; > +extern struct platform_driver inno_hdmi_driver; > +extern struct platform_driver rockchip_dp_driver; > +extern struct platform_driver vop_platform_driver; > #endif /* _ROCKCHIP_DRM_DRV_H_ */ > diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c > index 91fbc7b..0da4444 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c > +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c > @@ -404,7 +404,7 @@ static int vop_remove(struct platform_device *pdev) > return 0; > } > > -static struct platform_driver vop_platform_driver = { > +struct platform_driver vop_platform_driver = { > .probe = vop_probe, > .remove = vop_remove, > .driver = { > @@ -412,9 +412,3 @@ static struct platform_driver vop_platform_driver = { > .of_match_table = of_match_ptr(vop_driver_dt_match), > }, > }; > - > -module_platform_driver(vop_platform_driver); > - > -MODULE_AUTHOR("Mark Yao "); > -MODULE_DESCRIPTION("ROCKCHIP VOP Driver"); > -MODULE_LICENSE("GPL v2"); > -- > 2.1.4 >