diff options
| author | Gerhard Engleder <eg@keba.com> | 2024-10-11 21:12:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-13 17:16:57 +0200 |
| commit | ca7b844b91920573835ad11daaa30630ce112fe1 (patch) | |
| tree | d476d3581ecd8fe2d7dc50e763281a9f085e1c04 /drivers/misc | |
| parent | f965d315bcbd65adfe5e3c161e46b5dc0a463f68 (diff) | |
misc: keba: Add battery device
Add support for the battery auxiliary device. This enables monitoring of
the battery.
Signed-off-by: Gerhard Engleder <eg@keba.com>
Link: https://lore.kernel.org/r/20241011191257.19702-8-gerhard@engleder-embedded.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/keba/cp500.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/misc/keba/cp500.c b/drivers/misc/keba/cp500.c index ae3ed1cece32..afd4d7c06cee 100644 --- a/drivers/misc/keba/cp500.c +++ b/drivers/misc/keba/cp500.c @@ -82,6 +82,7 @@ struct cp500_devs { struct cp500_dev_info spi; struct cp500_dev_info i2c; struct cp500_dev_info fan; + struct cp500_dev_info batt; }; /* list of devices within FPGA of CP035 family (CP035, CP056, CP057) */ @@ -90,6 +91,7 @@ static struct cp500_devs cp035_devices = { .spi = { 0x1000, SZ_4K }, .i2c = { 0x4000, SZ_4K }, .fan = { 0x9000, SZ_4K }, + .batt = { 0xA000, SZ_4K }, }; /* list of devices within FPGA of CP505 family (CP503, CP505, CP507) */ @@ -98,6 +100,7 @@ static struct cp500_devs cp505_devices = { .spi = { 0x4000, SZ_4K }, .i2c = { 0x5000, SZ_4K }, .fan = { 0x9000, SZ_4K }, + .batt = { 0xA000, SZ_4K }, }; /* list of devices within FPGA of CP520 family (CP520, CP530) */ @@ -106,6 +109,7 @@ static struct cp500_devs cp520_devices = { .spi = { 0x4000, SZ_4K }, .i2c = { 0x5000, SZ_4K }, .fan = { 0x8000, SZ_4K }, + .batt = { 0x9000, SZ_4K }, }; struct cp500_nvmem { @@ -130,6 +134,7 @@ struct cp500 { struct keba_spi_auxdev *spi; struct keba_i2c_auxdev *i2c; struct keba_fan_auxdev *fan; + struct keba_batt_auxdev *batt; /* ECM EtherCAT BAR */ resource_size_t ecm_hwbase; @@ -457,6 +462,54 @@ static int cp500_register_fan(struct cp500 *cp500) return 0; } +static void cp500_batt_release(struct device *dev) +{ + struct keba_batt_auxdev *fan = + container_of(dev, struct keba_batt_auxdev, auxdev.dev); + + kfree(fan); +} + +static int cp500_register_batt(struct cp500 *cp500) +{ + int ret; + + cp500->batt = kzalloc(sizeof(*cp500->batt), GFP_KERNEL); + if (!cp500->batt) + return -ENOMEM; + + cp500->batt->auxdev.name = "batt"; + cp500->batt->auxdev.id = 0; + cp500->batt->auxdev.dev.release = cp500_batt_release; + cp500->batt->auxdev.dev.parent = &cp500->pci_dev->dev; + cp500->batt->io = (struct resource) { + /* battery register area */ + .start = (resource_size_t) cp500->sys_hwbase + + cp500->devs->batt.offset, + .end = (resource_size_t) cp500->sys_hwbase + + cp500->devs->batt.offset + + cp500->devs->batt.size - 1, + .flags = IORESOURCE_MEM, + }; + + ret = auxiliary_device_init(&cp500->batt->auxdev); + if (ret) { + kfree(cp500->batt); + cp500->batt = NULL; + + return ret; + } + ret = __auxiliary_device_add(&cp500->batt->auxdev, "keba"); + if (ret) { + auxiliary_device_uninit(&cp500->batt->auxdev); + cp500->batt = NULL; + + return ret; + } + + return 0; +} + static int cp500_nvmem_read(void *priv, unsigned int offset, void *val, size_t bytes) { @@ -613,6 +666,8 @@ static void cp500_register_auxiliary_devs(struct cp500 *cp500) if (present & CP500_PRESENT_FAN0) if (cp500_register_fan(cp500)) dev_warn(dev, "Failed to register fan!\n"); + if (cp500_register_batt(cp500)) + dev_warn(dev, "Failed to register battery!\n"); } static void cp500_unregister_dev(struct auxiliary_device *auxdev) @@ -635,6 +690,10 @@ static void cp500_unregister_auxiliary_devs(struct cp500 *cp500) cp500_unregister_dev(&cp500->fan->auxdev); cp500->fan = NULL; } + if (cp500->batt) { + cp500_unregister_dev(&cp500->batt->auxdev); + cp500->batt = NULL; + } } static irqreturn_t cp500_axi_handler(int irq, void *dev) |