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drm: sti: remove useless fields from vtg structure 

Drivers are registered on platform bus so the private list
could be replace by a call to of_find_device_by_node().
Changing this also makes dev, np and link fields useless
in vtg structure.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1510146255-24982-1-git-send-email-benjamin.gaignard@linaro.org
This commit is contained in:
Benjamin Gaignard 2017-11-08 14:50:14 +01:00
parent 846c7dfc11
commit cc6b741c6f
2 changed files with 9 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/sti/Kconfig
View File

@ -8,5 +8,6 @@ config DRM_STI
select DRM_PANEL
select FW_LOADER
select SND_SOC_HDMI_CODEC if SND_SOC
select OF
help
Choose this option to enable DRM on STM stiH4xx chipset

32
drivers/gpu/drm/sti/sti_vtg.c
View File

@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/notifier.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
@ -72,8 +73,6 @@
#define AWG_DELAY_ED (-8)
#define AWG_DELAY_SD (-7)
static LIST_HEAD(vtg_lookup);
/*
* STI VTG register offset structure
*
@ -123,42 +122,31 @@ struct sti_vtg_sync_params {
/**
* 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)
@ -397,9 +385,6 @@ static int vtg_probe(struct platform_device *pdev)
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) {
@ -428,10 +413,9 @@ static int vtg_probe(struct platform_device *pdev)
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;
}