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user/linux-rm: add brcmfmac resume fix patch

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This commit is contained in:
Antoine Martin 2023-04-26 14:02:28 -04:00
parent 4af6fde836
commit a9536da00e
Signed by: forge
GPG key ID: D62A472A4AA7D541
2 changed files with 224 additions and 1 deletions
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4
user/linux-rm/APKBUILD
View file

@ -4,7 +4,7 @@
pkgname=linux-rm
pkgver=5.4.70
_rmver=1.3.3
pkgrel=5
pkgrel=6
pkgdesc="Linux kernel with reMarkable patches"
url=https://github.com/reMarkable/linux
depends="initramfs-generator linux-firmware-brcm linux-firmware-cypress"
@ -18,6 +18,7 @@ source="
https://github.com/reMarkable/linux/archive/refs/tags/RM1XX_${pkgver}_v$_rmver.tar.gz
https://raw.githubusercontent.com/ichaozi/RemarkableFramebuffer/0f37dc8c06d340dc1af52ff2d4d6d5789ccf14bb/kernel-mxc-epdc-fb-reference/epdc_ES103CS1.fw
enable-automatic-partial-refreshing.patch
brcmfmac-fix-suspend-resume-when-power-is-cut-off.patch
config-changes-rm.armv7
config-changes-rm.armhf
"
@ -247,6 +248,7 @@ sha512sums="
80ab274ca3d30935d9913490662f17499c1ceedb438fe171554097d25ffc1cf85ee53f0c1642e94c0b833fdfb17636cd554bf685e4a6f5dac20cf122c1a25447 RM1XX_5.4.70_v1.3.3.tar.gz
ad4bd6f332319aceee7a1c7b71b49439e8217621214b6249c7e20198360d02ea442f31edfc8e1af1b85ed71e6f97c1cb7decf7b0885c9d0293361eef47f218b2 epdc_ES103CS1.fw
0f47278c5bfafb939e46224fbf16f9491e3cc560ac128dcf430a1f6cf9064fb1c5bf5db1a3076c35d30c004aec525a7d6616a647564f197bb29c57701c1db982 enable-automatic-partial-refreshing.patch
27ec1bc1d916dbd2258192c1ed864eacbd2746b49caa554fbaf1124bac478bab0b729e7fabbab8705ae175bb098800f795d415f4de4964da921c1b802560b67a brcmfmac-fix-suspend-resume-when-power-is-cut-off.patch
7f118de35f63960c0d9dc8d8ed56c4097006a3545d4672b618b1d430a7a9c018dbda4c2bfe900cd013c5f65766ddd62b1638ddfeb1bafde307f77d25891bd438 config-changes-rm.armv7
7f118de35f63960c0d9dc8d8ed56c4097006a3545d4672b618b1d430a7a9c018dbda4c2bfe900cd013c5f65766ddd62b1638ddfeb1bafde307f77d25891bd438 config-changes-rm.armhf
"

221
user/linux-rm/brcmfmac-fix-suspend-resume-when-power-is-cut-off.patch Normal file
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@ -0,0 +1,221 @@
From patchwork Wed Sep 25 13:44:57 2019
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From: Adrian Ratiu <adrian.ratiu@collabora.com>
To: brcm80211-dev-list.pdl@broadcom.com
Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
Martyn Welch <martyn.welch@collabora.com>
Subject: [PATCH 1/2] brcmfmac: don't WARN when there are no requests
Date: Wed, 25 Sep 2019 16:44:57 +0300
Message-Id: <20190925134458.1413790-1-adrian.ratiu@collabora.com>
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When n_reqs == 0 there is nothing to do so it doesn't make sense to
search for requests and issue a warning because none is found.
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
index 14e530601ef3..fabfbb0b40b0 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
@@ -57,6 +57,10 @@ static int brcmf_pno_remove_request(struct brcmf_pno_info *pi, u64 reqid)
mutex_lock(&pi->req_lock);
+ /* Nothing to do if we have no requests */
+ if (pi->n_reqs == 0)
+ goto done;
+
/* find request */
for (i = 0; i < pi->n_reqs; i++) {
if (pi->reqs[i]->reqid == reqid)
From patchwork Wed Sep 25 13:44:58 2019
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To: brcm80211-dev-list.pdl@broadcom.com
Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
Gustavo Padovan <gustavo.padovan@collabora.com>
Subject: [PATCH 2/2] brcmfmac: fix suspend/resume when power is cut off
Date: Wed, 25 Sep 2019 16:44:58 +0300
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brcmfmac assumed the wifi device always remains powered on and thus
hardcoded the MMC_PM_KEEP_POWER flag expecting the wifi device to
remain on even during suspend/resume cycles.
This is not always the case, some appliances cut power to everything
connected via SDIO for efficiency reasons and this leads to wifi not
being usable after coming out of suspend because the device was not
correctly reinitialized.
So we check for the keep_power capability and if it's not present then
we remove the device and probe it again during resume to mirror what's
happening in hardware and ensure correct reinitialization in the case
when MMC_PM_KEEP_POWER is not supported.
Suggested-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
---
.../broadcom/brcm80211/brcmfmac/bcmsdh.c | 53 ++++++++++++++-----
1 file changed, 39 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
index 987731b..dac4685 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -1136,7 +1136,8 @@ static int brcmf_ops_sdio_suspend(struct device *dev)
struct sdio_func *func;
struct brcmf_bus *bus_if;
struct brcmf_sdio_dev *sdiodev;
- mmc_pm_flag_t sdio_flags;
+ mmc_pm_flag_t pm_caps, sdio_flags;
+ int ret = 0;
struct brcmf_cfg80211_info *config;
int retry = BRCMF_PM_WAIT_MAXRETRY;
@@ -1159,19 +1160,33 @@ static int brcmf_ops_sdio_suspend(struct device *dev)
sdiodev = bus_if->bus_priv.sdio;
- brcmf_sdiod_freezer_on(sdiodev);
- brcmf_sdio_wd_timer(sdiodev->bus, 0);
-
- sdio_flags = MMC_PM_KEEP_POWER;
- if (sdiodev->wowl_enabled) {
- if (sdiodev->settings->bus.sdio.oob_irq_supported)
- enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
- else
- sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
+ pm_caps = sdio_get_host_pm_caps(func);
+
+ if (pm_caps & MMC_PM_KEEP_POWER) {
+ /* preserve card power during suspend */
+ brcmf_sdiod_freezer_on(sdiodev);
+ brcmf_sdio_wd_timer(sdiodev->bus, 0);
+
+ sdio_flags = MMC_PM_KEEP_POWER;
+ if (sdiodev->wowl_enabled) {
+ if (sdiodev->settings->bus.sdio.oob_irq_supported)
+ enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
+ else
+ sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
+ }
+
+ if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
+ brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
+
+ } else {
+ /* power will be cut so remove device, probe again in resume */
+ brcmf_sdiod_intr_unregister(sdiodev);
+ ret = brcmf_sdiod_remove(sdiodev);
+ if (ret)
+ brcmf_err("Failed to remove device on suspend\n");
}
- if (sdio_set_host_pm_flags(sdiodev->func1, sdio_flags))
- brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
- return 0;
+
+ return ret;
}
static int brcmf_ops_sdio_resume(struct device *dev)
@@ -1179,13 +1194,23 @@ static int brcmf_ops_sdio_resume(struct device *dev)
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
struct sdio_func *func = container_of(dev, struct sdio_func, dev);
+ mmc_pm_flag_t pm_caps = sdio_get_host_pm_caps(func);
+ int ret = 0;
brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
if (func->num != 2)
return 0;
- brcmf_sdiod_freezer_off(sdiodev);
- return 0;
+ if (!(pm_caps & MMC_PM_KEEP_POWER)) {
+ /* bus was powered off and device removed, probe again */
+ ret = brcmf_sdiod_probe(sdiodev);
+ if (ret)
+ brcmf_err("Failed to probe device on resume\n");
+ } else {
+ brcmf_sdiod_freezer_off(sdiodev);
+ }
+
+ return ret;
}
static const struct dev_pm_ops brcmf_sdio_pm_ops = {