58dcb3d121
- LBC supervisor v1..v4 (linux/patches/b10b3-lbc-supervisor-v3.patch + b10/b10b3/lbc-v3-to-v4-fault-clamp.diff): CHARGING 4.20 V/450 mA -> HOLD 4.05 V after 60 min CV -> battery -> new cycle on USB insert; FAULT = VDD_MAX 4.00 V clamp - RAM tests C/B/D/D2/D3/D4 (safety timer only ends fast charge), B10B-4 actuator audit (VDD_MAX works, USB_SUSP does not), B10B-5 FAULT clamp regression, production run, warm reboot via PON reboot reason - cache = B10B-5 c3732515 (HW EDL write, readback + full partition verify), class-A persistent validation - test-only hooks/images are not part of the production kernel; images with the AP PSK are not published
122 lines
4.2 KiB
Diff
122 lines
4.2 KiB
Diff
--- src-b10b3/drivers/power/supply/Kconfig 2026-09-21 19:09:00.000000000 +0600
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+++ src-b10b4/drivers/power/supply/Kconfig 2026-10-04 18:42:45.872000000 +0600
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@@ -768,6 +768,15 @@
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To compile this driver as module, choose M here: the
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module will be called pm8916_lbc.
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+config CHARGER_PM8916_LBC_B10B4_DEBUG
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+ bool "Aurora B10B-4 TEST-ONLY charger actuator debugfs hook"
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+ depends on CHARGER_PM8916_LBC && DEBUG_FS
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+ default n
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+ help
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+ TEST-ONLY (Aurora B10B-4, RAM images only). Adds the write-only debugfs file
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+ pm8916_lbc/b10b4 accepting exactly "susp 0|1" (USB_SUSP bit0), "vdd <0..8>"
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+ (VDD_MAX) and "ibat <0..4>" (IBAT_MAX). Never enable in a production image.
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+
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config CHARGER_BQ2415X
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tristate "TI BQ2415x battery charger driver"
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depends on I2C
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--- src-b10b3/drivers/power/supply/pm8916_lbc.c 2026-10-03 21:11:03.584000000 +0600
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+++ src-b10b4/drivers/power/supply/pm8916_lbc.c 2026-10-04 18:17:19.300000000 +0600
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@@ -20,6 +20,11 @@
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#include <linux/of.h>
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#include <linux/seq_file.h>
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#include <linux/workqueue.h>
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B4_DEBUG
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+#include <linux/fs.h>
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+#include <linux/string.h>
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+#include <linux/uaccess.h>
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+#endif
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/* Two bytes: type + subtype */
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#define PM8916_PERPH_TYPE 0x04
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@@ -544,6 +549,78 @@
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}
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DEFINE_SHOW_ATTRIBUTE(lbc_state);
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B4_DEBUG
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+/*
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+ * Aurora B10B-4 TEST-ONLY actuator hook (Kconfig CHARGER_PM8916_LBC_B10B4_DEBUG, default n, RAM test images only).
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+ * Write-only debugfs file pm8916_lbc/b10b4, exactly one of:
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+ * "susp 0|1" USB_SUSP (USB block + 0x47) bit0 only, masked update
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+ * "vdd <code>" VDD_MAX (CHGR block + 0x40), code 0x00..0x08 (4.000..4.200 V)
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+ * "ibat <code>" IBAT_MAX (CHGR block + 0x44), code 0x00..0x04 (90..450 mA)
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+ * Anything else (unknown command, extra/missing argument, out-of-range value) -> -EINVAL without any write.
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+ * Taken under supv_lock (the supervisor/charger lock); old/new/readback logged with dev_warn. Supervisor logic unchanged.
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+ */
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+#define PM8916_LBC_USB_SUSP 0x47
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+#define PM8916_LBC_USB_SUSP_BIT BIT(0)
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+
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+static ssize_t lbc_b10b4_write(struct file *file, const char __user *ubuf, size_t len, loff_t *ppos)
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+{
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+ struct pm8916_lbc_charger *chg = file->private_data;
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+ char buf[32], *p, *cmd, *arg;
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+ unsigned int val, addr, mask, old, rb;
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+ int ret;
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+
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+ if (len == 0 || len >= sizeof(buf))
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+ return -EINVAL;
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+ if (copy_from_user(buf, ubuf, len))
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+ return -EFAULT;
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+ buf[len] = 0;
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+ p = strim(buf);
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+ cmd = strsep(&p, " ");
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+ arg = strsep(&p, " ");
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+ if (!cmd || !arg || p || kstrtouint(arg, 0, &val))
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+ return -EINVAL;
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+
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+ if (!strcmp(cmd, "susp") && val <= 1) {
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+ addr = chg->reg[LBC_USB] + PM8916_LBC_USB_SUSP;
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+ mask = PM8916_LBC_USB_SUSP_BIT;
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+ } else if (!strcmp(cmd, "vdd") && val <= 0x08) {
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+ addr = chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_VDD_MAX;
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+ mask = 0xff;
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+ } else if (!strcmp(cmd, "ibat") && val <= 0x04) {
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+ addr = chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_IBAT_MAX;
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+ mask = 0xff;
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+ } else {
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+ return -EINVAL;
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+ }
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+
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+ mutex_lock(&chg->supv_lock);
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+ ret = regmap_read(chg->regmap, addr, &old);
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+ if (!ret) {
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+ if (mask == 0xff)
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+ ret = regmap_write(chg->regmap, addr, val);
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+ else
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+ ret = regmap_update_bits(chg->regmap, addr, mask, val ? mask : 0);
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+ }
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+ if (!ret)
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+ ret = regmap_read(chg->regmap, addr, &rb);
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+ mutex_unlock(&chg->supv_lock);
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+
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+ if (ret) {
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+ dev_warn(chg->dev, "B10B-4 TEST hook: %s %u at 0x%04x failed: %d\n", cmd, val, addr, ret);
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+ return ret;
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+ }
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+ dev_warn(chg->dev, "B10B-4 TEST hook: %s %u -> reg 0x%04x old 0x%02x readback 0x%02x\n", cmd, val, addr, old, rb);
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+ return len;
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+}
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+
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+static const struct file_operations lbc_b10b4_fops = {
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+ .owner = THIS_MODULE,
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+ .open = simple_open,
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+ .write = lbc_b10b4_write,
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+ .llseek = noop_llseek,
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+};
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+#endif
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+
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static void lbc_debugfs_remove(void *data)
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{
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debugfs_remove_recursive(data);
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@@ -771,6 +848,10 @@
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chg->debugfs = debugfs_create_dir("pm8916_lbc", NULL);
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debugfs_create_file("state", 0444, chg->debugfs, chg, &lbc_state_fops);
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B4_DEBUG
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+ debugfs_create_file("b10b4", 0200, chg->debugfs, chg, &lbc_b10b4_fops);
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+ dev_warn(dev, "B10B-4 TEST-ONLY actuator hook enabled (debugfs pm8916_lbc/b10b4) - never in production\n");
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+#endif
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ret = devm_add_action_or_reset(dev, lbc_debugfs_remove, chg->debugfs);
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if (ret)
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return ret;
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