From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Alan Chiang <alanx.chiang@intel.com>,
Andy Yeh <andy.yeh@intel.com>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.14 01/31] eeprom: at24: Add support for address-width property
Date: Thu, 8 Nov 2018 13:52:25 -0800 [thread overview]
Message-ID: <20181108215129.753982396@linuxfoundation.org> (raw)
In-Reply-To: <20181108215129.641434673@linuxfoundation.org>
4.14-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit a2b3bf4846e5eed62ea6abb096af2c950961033c ]
Provide a flexible way to determine the addressing bits of eeprom.
Pass the addressing bits to driver through address-width property.
Signed-off-by: Alan Chiang <alanx.chiang@intel.com>
Signed-off-by: Andy Yeh <andy.yeh@intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/misc/eeprom/at24.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index 4cc0b42f2acc..ded48a0c77ee 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -577,6 +577,23 @@ static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip)
if (device_property_present(dev, "read-only"))
chip->flags |= AT24_FLAG_READONLY;
+ err = device_property_read_u32(dev, "address-width", &val);
+ if (!err) {
+ switch (val) {
+ case 8:
+ if (chip->flags & AT24_FLAG_ADDR16)
+ dev_warn(dev, "Override address width to be 8, while default is 16\n");
+ chip->flags &= ~AT24_FLAG_ADDR16;
+ break;
+ case 16:
+ chip->flags |= AT24_FLAG_ADDR16;
+ break;
+ default:
+ dev_warn(dev, "Bad \"address-width\" property: %u\n",
+ val);
+ }
+ }
+
err = device_property_read_u32(dev, "pagesize", &val);
if (!err) {
chip->page_size = val;
--
2.17.1
next prev parent reply other threads:[~2018-11-08 22:08 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-08 21:52 [PATCH 4.14 00/31] 4.14.80-stable review Greg Kroah-Hartman
2018-11-08 21:52 ` Greg Kroah-Hartman [this message]
2018-11-09 7:48 ` [PATCH 4.14 01/31] eeprom: at24: Add support for address-width property Bartosz Golaszewski
2018-11-09 11:16 ` Greg Kroah-Hartman
2018-11-09 11:25 ` Bartosz Golaszewski
2018-11-09 17:30 ` Sasha Levin
2018-11-08 21:52 ` [PATCH 4.14 02/31] vfs: swap names of {do,vfs}_clone_file_range() Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 03/31] USB: serial: option: improve Quectel EP06 detection Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 04/31] USB: serial: option: add two-endpoints device-id flag Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 05/31] bpf: fix partial copy of map_ptr when dst is scalar Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 06/31] Revert "ARM: tegra: Fix ULPI regression on Tegra20" Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 07/31] clk: tegra: Add quirk for getting CDEV1/2 clocks on Tegra20 Greg Kroah-Hartman
2018-11-09 18:32 ` Dmitry Osipenko
2018-11-10 15:24 ` Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 08/31] fsnotify: fix ignore mask logic in fsnotify() Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 09/31] gpio: mxs: Get rid of external API call Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 10/31] xfs: truncate transaction does not modify the inobt Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 11/31] cachefiles: fix the race between cachefiles_bury_object() and rmdir(2) Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 12/31] ptp: fix Spectre v1 vulnerability Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 13/31] drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 14/31] drm/edid: VSDB yCBCr420 Deep Color mode bit definitions Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 15/31] drm: fb-helper: Reject all pixel format changing requests Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 16/31] RDMA/ucma: Fix Spectre v1 vulnerability Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 17/31] IB/ucm: " Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 18/31] cdc-acm: do not reset notification buffer index upon urb unlinking Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 19/31] cdc-acm: correct counting of UART states in serial state notification Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 20/31] cdc-acm: fix race between reset and control messaging Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 21/31] usb: usbip: Fix BUG: KASAN: slab-out-of-bounds in vhci_hub_control() Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 22/31] usb: gadget: storage: Fix Spectre v1 vulnerability Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 23/31] USB: fix the usbfs flag sanitization for control transfers Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 24/31] Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15IGM Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 25/31] sched/fair: Fix throttle_list starvation with low CFS quota Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 26/31] x86/tsc: Force inlining of cyc2ns bits Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 27/31] x86, hibernate: Fix nosave_regions setup for hibernation Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 28/31] x86/percpu: Fix this_cpu_read() Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 29/31] x86/time: Correct the attribute on jiffies definition Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 30/31] x86/fpu: Fix i486 + no387 boot crash by only saving FPU registers on context switch if there is an FPU Greg Kroah-Hartman
2018-11-08 21:52 ` [PATCH 4.14 31/31] net: fs_enet: do not call phy_stop() in interrupts Greg Kroah-Hartman
2018-11-09 4:11 ` [PATCH 4.14 00/31] 4.14.80-stable review kernelci.org bot
2018-11-09 14:41 ` Naresh Kamboju
2018-11-09 19:41 ` Guenter Roeck
2018-11-09 19:52 ` Shuah Khan
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