hwmon: (pmbus/bel-pfe) Enable PMBUS_SKIP_STATUS_CHECK for pfe1100
commitf38963b9cd
upstream. Skip status check for both pfe1100 and pfe3000 because the communication error is also observed on pfe1100 devices. Signed-off-by: Tao Ren <rentao.bupt@gmail.com> Fixes:626bb2f3fb
hwmon: (pmbus) add driver for BEL PFE1100 and PFE3000 Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230804221403.28931-1-rentao.bupt@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -17,12 +17,13 @@
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enum chips {pfe1100, pfe3000};
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/*
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* Disable status check for pfe3000 devices, because some devices report
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* communication error (invalid command) for VOUT_MODE command (0x20)
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* although correct VOUT_MODE (0x16) is returned: it leads to incorrect
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* exponent in linear mode.
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* Disable status check because some devices report communication error
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* (invalid command) for VOUT_MODE command (0x20) although the correct
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* VOUT_MODE (0x16) is returned: it leads to incorrect exponent in linear
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* mode.
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* This affects both pfe3000 and pfe1100.
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*/
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static struct pmbus_platform_data pfe3000_plat_data = {
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static struct pmbus_platform_data pfe_plat_data = {
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.flags = PMBUS_SKIP_STATUS_CHECK,
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};
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@ -94,16 +95,15 @@ static int pfe_pmbus_probe(struct i2c_client *client)
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int model;
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model = (int)i2c_match_id(pfe_device_id, client)->driver_data;
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client->dev.platform_data = &pfe_plat_data;
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/*
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* PFE3000-12-069RA devices may not stay in page 0 during device
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* probe which leads to probe failure (read status word failed).
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* So let's set the device to page 0 at the beginning.
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*/
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if (model == pfe3000) {
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client->dev.platform_data = &pfe3000_plat_data;
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if (model == pfe3000)
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i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
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}
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return pmbus_do_probe(client, &pfe_driver_info[model]);
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}
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