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drm/stm: ltdc: add number of interrupts

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The number of interrupts depends on the ltdc version.
Don't try to get interrupt which not exist, avoiding
kernel warning messages.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1579601632-7001-1-git-send-email-yannick.fertre@st.com
This commit is contained in:
Yannick Fertre 2020-01-21 11:13:52 +01:00 committed by Benjamin Gaignard
parent 6f21293dbb
commit 544aa6cefb
2 changed files with 17 additions and 16 deletions
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32
drivers/gpu/drm/stm/ltdc.c
View File

@ -1146,12 +1146,14 @@ static int ltdc_get_caps(struct drm_device *ddev)
ldev->caps.pad_max_freq_hz = 90000000;
if (ldev->caps.hw_version == HWVER_10200)
ldev->caps.pad_max_freq_hz = 65000000;
ldev->caps.nb_irq = 2;
break;
case HWVER_20101:
ldev->caps.reg_ofs = REG_OFS_4;
ldev->caps.pix_fmt_hw = ltdc_pix_fmt_a1;
ldev->caps.non_alpha_only_l1 = false;
ldev->caps.pad_max_freq_hz = 150000000;
ldev->caps.nb_irq = 4;
break;
default:
return -ENODEV;
@ -1251,13 +1253,21 @@ int ltdc_load(struct drm_device *ddev)
reg_clear(ldev->regs, LTDC_IER,
IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE);
for (i = 0; i < MAX_IRQ; i++) {
irq = platform_get_irq(pdev, i);
if (irq == -EPROBE_DEFER)
goto err;
ret = ltdc_get_caps(ddev);
if (ret) {
DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
ldev->caps.hw_version);
goto err;
}
if (irq < 0)
continue;
DRM_DEBUG_DRIVER("ltdc hw version 0x%08x\n", ldev->caps.hw_version);
for (i = 0; i < ldev->caps.nb_irq; i++) {
irq = platform_get_irq(pdev, i);
if (irq < 0) {
ret = irq;
goto err;
}
ret = devm_request_threaded_irq(dev, irq, ltdc_irq,
ltdc_irq_thread, IRQF_ONESHOT,
@ -1268,16 +1278,6 @@ int ltdc_load(struct drm_device *ddev)
}
}
ret = ltdc_get_caps(ddev);
if (ret) {
DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
ldev->caps.hw_version);
goto err;
}
DRM_DEBUG_DRIVER("ltdc hw version 0x%08x\n", ldev->caps.hw_version);
/* Add endpoints panels or bridges if any */
for (i = 0; i < MAX_ENDPOINTS; i++) {
if (panel[i]) {

1
drivers/gpu/drm/stm/ltdc.h
View File

@ -19,6 +19,7 @@ struct ltdc_caps {
const u32 *pix_fmt_hw; /* supported pixel formats */
bool non_alpha_only_l1; /* non-native no-alpha formats on layer 1 */
int pad_max_freq_hz; /* max frequency supported by pad */
int nb_irq; /* number of hardware interrupts */
};
#define LTDC_MAX_LAYER 4