From: Hans de Goede <hdegoede@redhat.com>
To: Mark Gross <markgross@kernel.org>,
Andy Shevchenko <andy@infradead.org>,
Wolfram Sang <wsa@the-dreams.de>,
Sebastian Reichel <sre@kernel.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Ard Biesheuvel <ardb@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>,
Yauhen Kharuzhy <jekhor@gmail.com>,
Tsuchiya Yuto <kitakar@gmail.com>,
platform-driver-x86@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-efi@vger.kernel.org
Subject: [PATCH 06/13] power: supply: bq25890: Add support for skipping initialization
Date: Sat, 30 Oct 2021 20:28:06 +0200 [thread overview]
Message-ID: <20211030182813.116672-7-hdegoede@redhat.com> (raw)
In-Reply-To: <20211030182813.116672-1-hdegoede@redhat.com>
On most X86/ACPI devices there is no devicetree to supply the necessary
init-data. Instead the firmware already fully initializes the bq25890
charger at boot.
At support for a new "ti,skip-init" boolean property to support this.
So far this new property is only used on X86/ACPI (non devicetree) devs,
IOW it is not used in actual devicetree files. The devicetree-bindings
maintainers have requested properties like these to not be added to the
devicetree-bindings, so the new property is deliberately not added
to the existing devicetree-bindings.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/power/supply/bq25890_charger.c | 23 ++++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
index 1ec93a565631..280821a6a6c6 100644
--- a/drivers/power/supply/bq25890_charger.c
+++ b/drivers/power/supply/bq25890_charger.c
@@ -73,6 +73,7 @@ enum bq25890_fields {
/* initial field values, converted to register values */
struct bq25890_init_data {
+ u8 write_cfg; /* write firmware cfg to chip? */
u8 ichg; /* charge current */
u8 vreg; /* regulation voltage */
u8 iterm; /* termination current */
@@ -638,7 +639,7 @@ static int bq25890_chip_reset(struct bq25890_device *bq)
static int bq25890_rw_init_data(struct bq25890_device *bq)
{
- bool write = true;
+ bool write = bq->init_data.write_cfg;
int ret;
int i;
@@ -682,10 +683,12 @@ static int bq25890_hw_init(struct bq25890_device *bq)
{
int ret;
- ret = bq25890_chip_reset(bq);
- if (ret < 0) {
- dev_dbg(bq->dev, "Reset failed %d\n", ret);
- return ret;
+ if (bq->init_data.write_cfg) {
+ ret = bq25890_chip_reset(bq);
+ if (ret < 0) {
+ dev_dbg(bq->dev, "Reset failed %d\n", ret);
+ return ret;
+ }
}
/* disable watchdog */
@@ -920,6 +923,10 @@ static int bq25890_fw_probe(struct bq25890_device *bq)
int ret;
struct bq25890_init_data *init = &bq->init_data;
+ init->write_cfg = !device_property_read_bool(bq->dev, "ti,skip-init");
+ if (!init->write_cfg)
+ return 0;
+
ret = bq25890_fw_read_u32_props(bq);
if (ret < 0)
return ret;
@@ -1033,8 +1040,10 @@ static int bq25890_remove(struct i2c_client *client)
if (!IS_ERR_OR_NULL(bq->usb_phy))
usb_unregister_notifier(bq->usb_phy, &bq->usb_nb);
- /* reset all registers to default values */
- bq25890_chip_reset(bq);
+ if (bq->init_data.write_cfg) {
+ /* reset all registers to default values */
+ bq25890_chip_reset(bq);
+ }
return 0;
}
--
2.31.1
next prev parent reply other threads:[~2021-10-30 18:28 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-30 18:28 [PATCH 00/13] power-suppy/i2c/extcon: Add support for cht-wc PMIC without USB-PD support Hans de Goede
2021-10-30 18:28 ` [PATCH 01/13] platform/x86: Rename touchscreen_dmi to dmi_device_properties Hans de Goede
2021-10-30 19:07 ` Randy Dunlap
2021-10-30 18:28 ` [PATCH 02/13] platform/x86: dmi_device_properties: Add setup info for boards with a CHT Whiskey Cove PMIC Hans de Goede
2021-10-30 21:56 ` Andy Shevchenko
2021-11-08 15:48 ` Hans de Goede
2021-10-30 18:28 ` [PATCH 03/13] power: supply: bq25890: Fix race causing oops at boot Hans de Goede
2021-11-02 16:28 ` Sebastian Reichel
2021-10-30 18:28 ` [PATCH 04/13] power: supply: bq25890: Fix initial setting of the F_CONV_RATE field Hans de Goede
2021-11-02 16:29 ` Sebastian Reichel
2021-10-30 18:28 ` [PATCH 05/13] power: supply: bq25890: Add a bq25890_rw_init_data() helper Hans de Goede
2021-10-30 18:28 ` Hans de Goede [this message]
2021-10-30 22:07 ` [PATCH 06/13] power: supply: bq25890: Add support for skipping initialization Andy Shevchenko
2021-11-08 15:57 ` Hans de Goede
2021-10-30 18:28 ` [PATCH 07/13] power: supply: bq25890: Enable charging on boards where we skip reset Hans de Goede
2021-11-07 18:32 ` Yauhen Kharuzhy
2021-10-30 18:28 ` [PATCH 08/13] power: supply: bq25890: Drop dev->platform_data == NULL check Hans de Goede
2021-10-30 18:28 ` [PATCH 09/13] power: supply: bq25890: Add bq25890_set_otg_cfg() helper Hans de Goede
2021-10-30 22:10 ` Andy Shevchenko
2021-11-08 15:59 ` Hans de Goede
2021-11-07 18:49 ` Yauhen Kharuzhy
2021-11-07 19:47 ` Hans de Goede
2021-10-30 18:28 ` [PATCH 10/13] power: supply: bq25890: Add support for registering the Vbus boost converter as a regulator Hans de Goede
2021-10-30 22:13 ` Andy Shevchenko
2021-11-08 16:06 ` Hans de Goede
2021-10-30 18:28 ` [PATCH 11/13] i2c: cht-wc: Add support for devices using a bq25890 charger Hans de Goede
2021-10-31 17:58 ` Wolfram Sang
2021-11-08 16:03 ` Hans de Goede
2021-11-07 19:07 ` Yauhen Kharuzhy
2021-11-07 19:35 ` Yauhen Kharuzhy
2021-11-07 19:51 ` Hans de Goede
2021-10-30 18:28 ` [PATCH 12/13] extcon: intel-cht-wc: Check new "intel,cht-wc-setup" device-property Hans de Goede
2021-10-30 18:28 ` [PATCH 13/13] extcon: intel-cht-wc: Add support for devices with an USB-micro-B connector Hans de Goede
2021-10-31 12:52 ` Andy Shevchenko
2021-11-08 15:44 ` Hans de Goede
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211030182813.116672-7-hdegoede@redhat.com \
--to=hdegoede@redhat.com \
--cc=andy@infradead.org \
--cc=ardb@kernel.org \
--cc=cw00.choi@samsung.com \
--cc=jekhor@gmail.com \
--cc=kitakar@gmail.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=markgross@kernel.org \
--cc=myungjoo.ham@samsung.com \
--cc=platform-driver-x86@vger.kernel.org \
--cc=sre@kernel.org \
--cc=wsa@the-dreams.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).