linux-kernel - [PATCH v4 0/2] usb: misc: onboard_usb_dev: add Microchip usb5744 SMBus support

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Message-ID: <1725192519-3867920-1-git-send-email-radhey.shyam.pandey@amd.com>
Date: Sun, 1 Sep 2024 17:38:37 +0530
From: Radhey Shyam Pandey <radhey.shyam.pandey@....com>
To: <gregkh@...uxfoundation.org>, <mka@...omium.org>,
	<sakari.ailus@...ux.intel.com>, <wentong.wu@...el.com>,
	<javier.carrasco@...fvision.net>, <stefan.eichenberger@...adex.com>,
	<francesco.dolcini@...adex.com>, <jbrunet@...libre.com>,
	<macpaul.lin@...iatek.com>, <frieder.schrempf@...tron.de>
CC: <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<git@....com>, Radhey Shyam Pandey <radhey.shyam.pandey@....com>
Subject: [PATCH v4 0/2] usb: misc: onboard_usb_dev: add Microchip usb5744 SMBus support

This patchset adds usb5744 SMBus support in onboard usb driver.

Changes for v4:
- Fix error: implicit declaration of function 'i2c_smbus_*' APIs by
  introducing a kconfig dependency on I2C_CONFIG. This error is reported
  by kernel test on v3 series and usb:usb-testing 20/25 branch.
  https://lore.kernel.org/all/2024082503-uncoated-chaperone-7f70@gregkh

Changes for v3:
- Modified power_on_delay_us comment.
- Add comment for UDC suspend sequence.
- Drop USB5744_CREG_MEM_NBYTES and USB5744_CREG_NBYTES and replace
  it with literal + comment.
- Move microchip defines to source file.

Changes in v2:
- Fix subsystem "usb: misc: onboard_usb_dev:..."
- Change implementation from introducing onboard_dev_i2c_init
  func pointer and do i2c initialization based on compatible string.
  This is to make onboard_dev_5744_i2c_init() as static.
- Use #define for different register bits instead of magic values.
- Use err_power_off label name.
- Modified commit description to be in sync with v2 changes.
- Move power on reset delay to separate patch.

Radhey Shyam Pandey (2):
  usb: misc: onboard_dev: extend platform data to add power on delay
    field
  usb: misc: onboard_usb_dev: add Microchip usb5744 SMBus programming
    support

 drivers/usb/misc/Kconfig           |  2 +-
 drivers/usb/misc/onboard_usb_dev.c | 74 ++++++++++++++++++++++++++++++
 drivers/usb/misc/onboard_usb_dev.h |  2 +
 3 files changed, 77 insertions(+), 1 deletion(-)


base-commit: 431c1646e1f86b949fa3685efc50b660a364c2b6
-- 
2.34.1