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firmware: meson: sm: Add thermal calibration SMC call

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Add SM_THERMAL_CALIB_READ at SMC ID 0x82000047 in the command
table and implement meson_sm_get_thermal_calib(), which forwards the
tsensor_id argument to the secure monitor and returns the calibration data.

Also realign the CMD() column to improve readability.

Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
[ dlezcano: Fixed kernel-doc format warning ]
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260424-add-thermal-t7-vim4-v5-3-9040ca36afe2@aliel.fr
This commit is contained in:
Ronald Claveau
2026-04-24 17:45:11 +02:00
committed by Daniel Lezcano
parent d0bf38194b
commit 1c5cb7391e
1 changed files with 23 additions and 5 deletions
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28
drivers/firmware/meson/meson_sm.c
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@@ -41,12 +41,13 @@ static const struct meson_sm_chip gxbb_chip = {
.cmd_shmem_in_base = 0x82000020,
.cmd_shmem_out_base = 0x82000021,
.cmd = {
CMD(SM_EFUSE_READ, 0x82000030),
CMD(SM_EFUSE_WRITE, 0x82000031),
CMD(SM_EFUSE_READ, 0x82000030),
CMD(SM_EFUSE_WRITE, 0x82000031),
CMD(SM_EFUSE_USER_MAX, 0x82000033),
CMD(SM_GET_CHIP_ID, 0x82000044),
CMD(SM_A1_PWRC_SET, 0x82000093),
CMD(SM_A1_PWRC_GET, 0x82000095),
CMD(SM_GET_CHIP_ID, 0x82000044),
CMD(SM_THERMAL_CALIB_READ, 0x82000047),
CMD(SM_A1_PWRC_SET, 0x82000093),
CMD(SM_A1_PWRC_GET, 0x82000095),
{ /* sentinel */ },
},
};
@@ -245,6 +246,23 @@ struct meson_sm_firmware *meson_sm_get(struct device_node *sm_node)
}
EXPORT_SYMBOL_GPL(meson_sm_get);
/**
* meson_sm_get_thermal_calib - Read thermal sensor calibration data.
* @fw: Pointer to secure-monitor firmware.
* @trim_info: Pointer to store the returned calibration data.
* @tsensor_id: Sensor index to identify which sensor's calibration data
* to retrieve
*
* Return: 0 on success, negative error code on failure.
*/
int meson_sm_get_thermal_calib(struct meson_sm_firmware *fw, u32 *trim_info,
u32 tsensor_id)
{
return meson_sm_call(fw, SM_THERMAL_CALIB_READ, trim_info, tsensor_id,
0, 0, 0, 0);
}
EXPORT_SYMBOL_GPL(meson_sm_get_thermal_calib);
#define SM_CHIP_ID_LENGTH 119
#define SM_CHIP_ID_OFFSET 4
#define SM_CHIP_ID_SIZE 12