From: Tomi Valkeinen Date: Wed, 29 Aug 2012 13:31:29 +0000 (+0300) Subject: OMAPDSS: Taal: use devm_* functions X-Git-Tag: v3.7-rc1~48^2~1^2~10^2~17 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5e56ad44b4d2de688823933643ff80389f33daae;p=platform%2Fkernel%2Flinux-3.10.git OMAPDSS: Taal: use devm_* functions Use devm_ functions in panel-taal.c's probe when possible. Also reorder the initialization sequence so that devm_ allocations are done before things that require explicit freeing. This simplifies the probe and remove functions. Signed-off-by: Tomi Valkeinen --- diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c index 7b2d7bb..1255864 100644 --- a/drivers/video/omap2/displays/panel-taal.c +++ b/drivers/video/omap2/displays/panel-taal.c @@ -865,10 +865,8 @@ static int taal_probe(struct omap_dss_device *dssdev) dev_dbg(&dssdev->dev, "probe\n"); - if (!panel_data || !panel_data->name) { - r = -EINVAL; - goto err; - } + if (!panel_data || !panel_data->name) + return -EINVAL; for (i = 0; i < ARRAY_SIZE(panel_configs); i++) { if (strcmp(panel_data->name, panel_configs[i].name) == 0) { @@ -877,21 +875,17 @@ static int taal_probe(struct omap_dss_device *dssdev) } } - if (!panel_config) { - r = -EINVAL; - goto err; - } + if (!panel_config) + return -EINVAL; dssdev->panel.timings = panel_config->timings; dssdev->panel.dsi_pix_fmt = OMAP_DSS_DSI_FMT_RGB888; dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | OMAP_DSS_DISPLAY_CAP_TEAR_ELIM; - td = kzalloc(sizeof(*td), GFP_KERNEL); - if (!td) { - r = -ENOMEM; - goto err; - } + td = devm_kzalloc(&dssdev->dev, sizeof(*td), GFP_KERNEL); + if (!td) + return -ENOMEM; td->dssdev = dssdev; td->panel_config = panel_config; td->esd_interval = panel_data->esd_interval; @@ -902,26 +896,51 @@ static int taal_probe(struct omap_dss_device *dssdev) atomic_set(&td->do_update, 0); - td->workqueue = create_singlethread_workqueue("taal_esd"); - if (td->workqueue == NULL) { - dev_err(&dssdev->dev, "can't create ESD workqueue\n"); - r = -ENOMEM; - goto err_wq; - } - INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); - INIT_DELAYED_WORK(&td->ulps_work, taal_ulps_work); - dev_set_drvdata(&dssdev->dev, td); if (gpio_is_valid(panel_data->reset_gpio)) { - r = gpio_request_one(panel_data->reset_gpio, GPIOF_OUT_INIT_LOW, - "taal rst"); + r = devm_gpio_request_one(&dssdev->dev, panel_data->reset_gpio, + GPIOF_OUT_INIT_LOW, "taal rst"); if (r) { dev_err(&dssdev->dev, "failed to request reset gpio\n"); - goto err_rst_gpio; + return r; } } + if (panel_data->use_ext_te) { + int gpio = panel_data->ext_te_gpio; + + r = devm_gpio_request_one(&dssdev->dev, gpio, GPIOF_IN, + "taal irq"); + if (r) { + dev_err(&dssdev->dev, "GPIO request failed\n"); + return r; + } + + r = devm_request_irq(&dssdev->dev, gpio_to_irq(gpio), + taal_te_isr, + IRQF_TRIGGER_RISING, + "taal vsync", dssdev); + + if (r) { + dev_err(&dssdev->dev, "IRQ request failed\n"); + return r; + } + + INIT_DELAYED_WORK_DEFERRABLE(&td->te_timeout_work, + taal_te_timeout_work_callback); + + dev_dbg(&dssdev->dev, "Using GPIO TE\n"); + } + + td->workqueue = create_singlethread_workqueue("taal_esd"); + if (td->workqueue == NULL) { + dev_err(&dssdev->dev, "can't create ESD workqueue\n"); + return -ENOMEM; + } + INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work); + INIT_DELAYED_WORK(&td->ulps_work, taal_ulps_work); + taal_hw_reset(dssdev); if (panel_data->use_dsi_backlight) { @@ -945,31 +964,6 @@ static int taal_probe(struct omap_dss_device *dssdev) taal_bl_update_status(bldev); } - if (panel_data->use_ext_te) { - int gpio = panel_data->ext_te_gpio; - - r = gpio_request_one(gpio, GPIOF_IN, "taal irq"); - if (r) { - dev_err(&dssdev->dev, "GPIO request failed\n"); - goto err_gpio; - } - - r = request_irq(gpio_to_irq(gpio), taal_te_isr, - IRQF_TRIGGER_RISING, - "taal vsync", dssdev); - - if (r) { - dev_err(&dssdev->dev, "IRQ request failed\n"); - gpio_free(gpio); - goto err_irq; - } - - INIT_DELAYED_WORK_DEFERRABLE(&td->te_timeout_work, - taal_te_timeout_work_callback); - - dev_dbg(&dssdev->dev, "Using GPIO TE\n"); - } - r = omap_dsi_request_vc(dssdev, &td->channel); if (r) { dev_err(&dssdev->dev, "failed to get virtual channel\n"); @@ -993,29 +987,16 @@ static int taal_probe(struct omap_dss_device *dssdev) err_vc_id: omap_dsi_release_vc(dssdev, td->channel); err_req_vc: - if (panel_data->use_ext_te) - free_irq(gpio_to_irq(panel_data->ext_te_gpio), dssdev); -err_irq: - if (panel_data->use_ext_te) - gpio_free(panel_data->ext_te_gpio); -err_gpio: if (bldev != NULL) backlight_device_unregister(bldev); err_bl: - if (gpio_is_valid(panel_data->reset_gpio)) - gpio_free(panel_data->reset_gpio); -err_rst_gpio: destroy_workqueue(td->workqueue); -err_wq: - kfree(td); -err: return r; } static void __exit taal_remove(struct omap_dss_device *dssdev) { struct taal_data *td = dev_get_drvdata(&dssdev->dev); - struct nokia_dsi_panel_data *panel_data = get_panel_data(dssdev); struct backlight_device *bldev; dev_dbg(&dssdev->dev, "remove\n"); @@ -1023,12 +1004,6 @@ static void __exit taal_remove(struct omap_dss_device *dssdev) sysfs_remove_group(&dssdev->dev.kobj, &taal_attr_group); omap_dsi_release_vc(dssdev, td->channel); - if (panel_data->use_ext_te) { - int gpio = panel_data->ext_te_gpio; - free_irq(gpio_to_irq(gpio), dssdev); - gpio_free(gpio); - } - bldev = td->bldev; if (bldev != NULL) { bldev->props.power = FB_BLANK_POWERDOWN; @@ -1042,11 +1017,6 @@ static void __exit taal_remove(struct omap_dss_device *dssdev) /* reset, to be sure that the panel is in a valid state */ taal_hw_reset(dssdev); - - if (gpio_is_valid(panel_data->reset_gpio)) - gpio_free(panel_data->reset_gpio); - - kfree(td); } static int taal_power_on(struct omap_dss_device *dssdev)