#include <linux/module.h>
#include <linux/notifier.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
#define AWG_DELAY_ED (-8)
#define AWG_DELAY_SD (-7)
-static LIST_HEAD(vtg_lookup);
-
/*
* STI VTG register offset structure
*
/**
* STI VTG structure
*
- * @dev: pointer to device driver
- * @np: device node
* @regs: register mapping
* @sync_params: synchronisation parameters used to generate timings
* @irq: VTG irq
* @irq_status: store the IRQ status value
* @notifier_list: notifier callback
* @crtc: the CRTC for vblank event
- * @link: List node to link the structure in lookup list
*/
struct sti_vtg {
- struct device *dev;
- struct device_node *np;
void __iomem *regs;
struct sti_vtg_sync_params sync_params[VTG_MAX_SYNC_OUTPUT];
int irq;
u32 irq_status;
struct raw_notifier_head notifier_list;
struct drm_crtc *crtc;
- struct list_head link;
};
-static void vtg_register(struct sti_vtg *vtg)
-{
- list_add_tail(&vtg->link, &vtg_lookup);
-}
-
struct sti_vtg *of_vtg_find(struct device_node *np)
{
- struct sti_vtg *vtg;
+ struct platform_device *pdev;
- list_for_each_entry(vtg, &vtg_lookup, link) {
- if (vtg->np == np)
- return vtg;
- }
- return NULL;
+ pdev = of_find_device_by_node(np);
+ if (!pdev)
+ return NULL;
+
+ return (struct sti_vtg *)platform_get_drvdata(pdev);
}
static void vtg_reset(struct sti_vtg *vtg)
if (!vtg)
return -ENOMEM;
- vtg->dev = dev;
- vtg->np = pdev->dev.of_node;
-
/* Get Memory ressources */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
return ret;
}
- vtg_register(vtg);
platform_set_drvdata(pdev, vtg);
- DRM_INFO("%s %s\n", __func__, dev_name(vtg->dev));
+ DRM_INFO("%s %s\n", __func__, dev_name(dev));
return 0;
}