[PATCH v1 1/6] power: pmic: add the basic CPCAP PMIC support
Svyatoslav Ryhel
clamor95 at gmail.com
Sun Mar 30 11:45:07 CEST 2025
The CPCAP is a Motorola/ST-Ericsson creation, a multifunctional IC whose
main purpose was power control. It was used in a wide variety of Motorola
products, both Tegra and OMAP based. The most notable devices using this
PMIC are the Motorola Droid 4, Atrix 4G, and Droid X2.
Signed-off-by: Svyatoslav Ryhel <clamor95 at gmail.com>
---
drivers/power/pmic/Kconfig | 10 ++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/cpcap.c | 90 ++++++++++++++
include/power/cpcap.h | 238 ++++++++++++++++++++++++++++++++++++
4 files changed, 339 insertions(+)
create mode 100644 drivers/power/pmic/cpcap.c
create mode 100644 include/power/cpcap.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index bbcbcee4c35..5a61cd45b8c 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -295,6 +295,16 @@ config DM_PMIC_SANDBOX
Driver binding info: doc/device-tree-bindings/pmic/sandbox.txt
+config DM_PMIC_CPCAP
+ bool "Enable Driver Model for Motorola CPCAP"
+ help
+ The CPCAP is a Motorola/ST-Ericsson creation, a multifunctional IC
+ whose main purpose is power control. It was used in a wide variety of
+ Motorola products, both Tegra and OMAP based. The most notable devices
+ using this PMIC are the Motorola Droid 4, Atrix 4G, and Droid X2.
+ Unlike most PMICs, this one is not I2C based; it uses the SPI bus. The
+ core driver provides both read and write access to the device registers.
+
config PMIC_S5M8767
bool "Enable Driver Model for the Samsung S5M8767 PMIC"
---help---
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index bc138f563ff..369794d3e1a 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_PMIC_TPS65219) += tps65219.o
obj-$(CONFIG_PMIC_TPS65941) += tps65941.o
obj-$(CONFIG_PMIC_RAA215300) += raa215300.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
+obj-$(CONFIG_$(XPL_)DM_PMIC_CPCAP) += cpcap.o
ifeq ($(CONFIG_$(XPL_)POWER_LEGACY),y)
obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
diff --git a/drivers/power/pmic/cpcap.c b/drivers/power/pmic/cpcap.c
new file mode 100644
index 00000000000..4923255f0a7
--- /dev/null
+++ b/drivers/power/pmic/cpcap.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2025 Svyatoslav Ryhel <clamor95 at gmail.com>
+ */
+
+#include <dm.h>
+#include <dm/lists.h>
+#include <log.h>
+#include <power/pmic.h>
+#include <power/cpcap.h>
+#include <spi.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+
+static int cpcap_write(struct udevice *dev, uint reg, const uint8_t *buff, int len)
+{
+ u8 buf[4];
+ u16 data = *(u16 *)buff;
+ int ret;
+
+ buf[0] = ((reg >> 8) & 0xff) | 0x80;
+ buf[1] = reg & 0xff;
+ buf[2] = data >> 8 & 0xff;
+ buf[3] = data & 0xff;
+
+ ret = dm_spi_xfer(dev, 32, buf, NULL, SPI_XFER_ONCE);
+
+ log_debug("%s: reg 0x%x, data 0x%04x, ret %d\n", __func__, reg, data, ret);
+
+ return ret;
+}
+
+static int cpcap_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ u8 buf[4];
+ int ret;
+
+ buf[0] = (reg >> 8) & 0xff;
+ buf[1] = reg & 0xff;
+ buf[2] = 0;
+ buf[3] = 0;
+
+ ret = dm_spi_xfer(dev, 32, buf, buf, SPI_XFER_ONCE);
+ *buff = (buf[2] << 8) | buf[3];
+
+ log_debug("%s: reg 0x%x, data 0x%04x, ret %d\n", __func__, reg, *buff, ret);
+ return ret;
+}
+
+static int cpcap_probe(struct udevice *dev)
+{
+ struct spi_slave *slave = dev_get_parent_priv(dev);
+ int ret;
+
+ ret = spi_claim_bus(slave);
+ if (ret) {
+ log_err("SPI bus allocation failed (%d)\n", ret);
+ return ret;
+ }
+
+ u16 id = pmic_reg_read(dev, CPCAP_REG_VERSC1);
+
+ u16 ven = (id >> 6) & 0x7;
+ u16 rev = ((id >> 3) & 0x7) | ((id << 3) & 0x38);
+
+ log_debug("%s: vendor %s rev: %i.%i (%x)\n", __func__,
+ ven == CPCAP_VENDOR_ST ? "ST" : "TI",
+ CPCAP_REVISION_MAJOR(rev), CPCAP_REVISION_MINOR(rev),
+ rev);
+ return 0;
+}
+
+static struct dm_pmic_ops cpcap_ops = {
+ .read = cpcap_read,
+ .write = cpcap_write,
+};
+
+static const struct udevice_id cpcap_ids[] = {
+ { .compatible = "motorola,cpcap" },
+ { .compatible = "st,6556002" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_cpcap) = {
+ .name = "cpcap_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = cpcap_ids,
+ .probe = cpcap_probe,
+ .ops = &cpcap_ops,
+};
diff --git a/include/power/cpcap.h b/include/power/cpcap.h
new file mode 100644
index 00000000000..ecc0ece6518
--- /dev/null
+++ b/include/power/cpcap.h
@@ -0,0 +1,238 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+#ifndef _CPCAP_H_
+#define _CPCAP_H_
+
+#define CPCAP_VENDOR_ST 0
+#define CPCAP_VENDOR_TI 1
+
+#define CPCAP_REVISION_MAJOR(r) (((r) >> 4) + 1)
+#define CPCAP_REVISION_MINOR(r) ((r) & 0xf)
+
+#define CPCAP_REVISION_1_0 0x08
+#define CPCAP_REVISION_1_1 0x09
+#define CPCAP_REVISION_2_0 0x10
+#define CPCAP_REVISION_2_1 0x11
+#define CPCAP_REVISION_3_1 0x19
+
+/* CPCAP registers */
+#define CPCAP_REG_INT1 0x0000 /* Interrupt 1 */
+#define CPCAP_REG_INT2 0x0004 /* Interrupt 2 */
+#define CPCAP_REG_INT3 0x0008 /* Interrupt 3 */
+#define CPCAP_REG_INT4 0x000c /* Interrupt 4 */
+#define CPCAP_REG_INTM1 0x0010 /* Interrupt Mask 1 */
+#define CPCAP_REG_INTM2 0x0014 /* Interrupt Mask 2 */
+#define CPCAP_REG_INTM3 0x0018 /* Interrupt Mask 3 */
+#define CPCAP_REG_INTM4 0x001c /* Interrupt Mask 4 */
+#define CPCAP_REG_INTS1 0x0020 /* Interrupt Sense 1 */
+#define CPCAP_REG_INTS2 0x0024 /* Interrupt Sense 2 */
+#define CPCAP_REG_INTS3 0x0028 /* Interrupt Sense 3 */
+#define CPCAP_REG_INTS4 0x002c /* Interrupt Sense 4 */
+#define CPCAP_REG_ASSIGN1 0x0030 /* Resource Assignment 1 */
+#define CPCAP_REG_ASSIGN2 0x0034 /* Resource Assignment 2 */
+#define CPCAP_REG_ASSIGN3 0x0038 /* Resource Assignment 3 */
+#define CPCAP_REG_ASSIGN4 0x003c /* Resource Assignment 4 */
+#define CPCAP_REG_ASSIGN5 0x0040 /* Resource Assignment 5 */
+#define CPCAP_REG_ASSIGN6 0x0044 /* Resource Assignment 6 */
+#define CPCAP_REG_VERSC1 0x0048 /* Version Control 1 */
+#define CPCAP_REG_VERSC2 0x004c /* Version Control 2 */
+
+#define CPCAP_REG_MI1 0x0200 /* Macro Interrupt 1 */
+#define CPCAP_REG_MIM1 0x0204 /* Macro Interrupt Mask 1 */
+#define CPCAP_REG_MI2 0x0208 /* Macro Interrupt 2 */
+#define CPCAP_REG_MIM2 0x020c /* Macro Interrupt Mask 2 */
+#define CPCAP_REG_UCC1 0x0210 /* UC Control 1 */
+#define CPCAP_REG_UCC2 0x0214 /* UC Control 2 */
+
+#define CPCAP_REG_PC1 0x021c /* Power Cut 1 */
+#define CPCAP_REG_PC2 0x0220 /* Power Cut 2 */
+#define CPCAP_REG_BPEOL 0x0224 /* BP and EOL */
+#define CPCAP_REG_PGC 0x0228 /* Power Gate and Control */
+#define CPCAP_REG_MT1 0x022c /* Memory Transfer 1 */
+#define CPCAP_REG_MT2 0x0230 /* Memory Transfer 2 */
+#define CPCAP_REG_MT3 0x0234 /* Memory Transfer 3 */
+#define CPCAP_REG_PF 0x0238 /* Print Format */
+
+#define CPCAP_REG_SCC 0x0400 /* System Clock Control */
+#define CPCAP_REG_SW1 0x0404 /* Stop Watch 1 */
+#define CPCAP_REG_SW2 0x0408 /* Stop Watch 2 */
+#define CPCAP_REG_UCTM 0x040c /* UC Turbo Mode */
+#define CPCAP_REG_TOD1 0x0410 /* Time of Day 1 */
+#define CPCAP_REG_TOD2 0x0414 /* Time of Day 2 */
+#define CPCAP_REG_TODA1 0x0418 /* Time of Day Alarm 1 */
+#define CPCAP_REG_TODA2 0x041c /* Time of Day Alarm 2 */
+#define CPCAP_REG_DAY 0x0420 /* Day */
+#define CPCAP_REG_DAYA 0x0424 /* Day Alarm */
+#define CPCAP_REG_VAL1 0x0428 /* Validity 1 */
+#define CPCAP_REG_VAL2 0x042c /* Validity 2 */
+
+#define CPCAP_REG_SDVSPLL 0x0600 /* Switcher DVS and PLL */
+#define CPCAP_REG_SI2CC1 0x0604 /* Switcher I2C Control 1 */
+#define CPCAP_REG_Si2CC2 0x0608 /* Switcher I2C Control 2 */
+#define CPCAP_REG_S1C1 0x060c /* Switcher 1 Control 1 */
+#define CPCAP_REG_S1C2 0x0610 /* Switcher 1 Control 2 */
+#define CPCAP_REG_S2C1 0x0614 /* Switcher 2 Control 1 */
+#define CPCAP_REG_S2C2 0x0618 /* Switcher 2 Control 2 */
+#define CPCAP_REG_S3C 0x061c /* Switcher 3 Control */
+#define CPCAP_REG_S4C1 0x0620 /* Switcher 4 Control 1 */
+#define CPCAP_REG_S4C2 0x0624 /* Switcher 4 Control 2 */
+#define CPCAP_REG_S5C 0x0628 /* Switcher 5 Control */
+#define CPCAP_REG_S6C 0x062c /* Switcher 6 Control */
+#define CPCAP_REG_VCAMC 0x0630 /* VCAM Control */
+#define CPCAP_REG_VCSIC 0x0634 /* VCSI Control */
+#define CPCAP_REG_VDACC 0x0638 /* VDAC Control */
+#define CPCAP_REG_VDIGC 0x063c /* VDIG Control */
+#define CPCAP_REG_VFUSEC 0x0640 /* VFUSE Control */
+#define CPCAP_REG_VHVIOC 0x0644 /* VHVIO Control */
+#define CPCAP_REG_VSDIOC 0x0648 /* VSDIO Control */
+#define CPCAP_REG_VPLLC 0x064c /* VPLL Control */
+#define CPCAP_REG_VRF1C 0x0650 /* VRF1 Control */
+#define CPCAP_REG_VRF2C 0x0654 /* VRF2 Control */
+#define CPCAP_REG_VRFREFC 0x0658 /* VRFREF Control */
+#define CPCAP_REG_VWLAN1C 0x065c /* VWLAN1 Control */
+#define CPCAP_REG_VWLAN2C 0x0660 /* VWLAN2 Control */
+#define CPCAP_REG_VSIMC 0x0664 /* VSIM Control */
+#define CPCAP_REG_VVIBC 0x0668 /* VVIB Control */
+#define CPCAP_REG_VUSBC 0x066c /* VUSB Control */
+#define CPCAP_REG_VUSBINT1C 0x0670 /* VUSBINT1 Control */
+#define CPCAP_REG_VUSBINT2C 0x0674 /* VUSBINT2 Control */
+#define CPCAP_REG_URT 0x0678 /* Useroff Regulator Trigger */
+#define CPCAP_REG_URM1 0x067c /* Useroff Regulator Mask 1 */
+#define CPCAP_REG_URM2 0x0680 /* Useroff Regulator Mask 2 */
+
+#define CPCAP_REG_VAUDIOC 0x0800 /* VAUDIO Control */
+#define CPCAP_REG_CC 0x0804 /* Codec Control */
+#define CPCAP_REG_CDI 0x0808 /* Codec Digital Interface */
+#define CPCAP_REG_SDAC 0x080c /* Stereo DAC */
+#define CPCAP_REG_SDACDI 0x0810 /* Stereo DAC Digital Interface */
+#define CPCAP_REG_TXI 0x0814 /* TX Inputs */
+#define CPCAP_REG_TXMP 0x0818 /* TX MIC PGA's */
+#define CPCAP_REG_RXOA 0x081c /* RX Output Amplifiers */
+#define CPCAP_REG_RXVC 0x0820 /* RX Volume Control */
+#define CPCAP_REG_RXCOA 0x0824 /* RX Codec to Output Amps */
+#define CPCAP_REG_RXSDOA 0x0828 /* RX Stereo DAC to Output Amps */
+#define CPCAP_REG_RXEPOA 0x082c /* RX External PGA to Output Amps */
+#define CPCAP_REG_RXLL 0x0830 /* RX Low Latency */
+#define CPCAP_REG_A2LA 0x0834 /* A2 Loudspeaker Amplifier */
+#define CPCAP_REG_MIPIS1 0x0838 /* MIPI Slimbus 1 */
+#define CPCAP_REG_MIPIS2 0x083c /* MIPI Slimbus 2 */
+#define CPCAP_REG_MIPIS3 0x0840 /* MIPI Slimbus 3. */
+#define CPCAP_REG_LVAB 0x0844 /* LMR Volume and A4 Balanced. */
+
+#define CPCAP_REG_CCC1 0x0a00 /* Coulomb Counter Control 1 */
+#define CPCAP_REG_CRM 0x0a04 /* Charger and Reverse Mode */
+#define CPCAP_REG_CCCC2 0x0a08 /* Coincell and Coulomb Ctr Ctrl 2 */
+#define CPCAP_REG_CCS1 0x0a0c /* Coulomb Counter Sample 1 */
+#define CPCAP_REG_CCS2 0x0a10 /* Coulomb Counter Sample 2 */
+#define CPCAP_REG_CCA1 0x0a14 /* Coulomb Counter Accumulator 1 */
+#define CPCAP_REG_CCA2 0x0a18 /* Coulomb Counter Accumulator 2 */
+#define CPCAP_REG_CCM 0x0a1c /* Coulomb Counter Mode */
+#define CPCAP_REG_CCO 0x0a20 /* Coulomb Counter Offset */
+#define CPCAP_REG_CCI 0x0a24 /* Coulomb Counter Integrator */
+
+#define CPCAP_REG_ADCC1 0x0c00 /* A/D Converter Configuration 1 */
+#define CPCAP_REG_ADCC2 0x0c04 /* A/D Converter Configuration 2 */
+#define CPCAP_REG_ADCD0 0x0c08 /* A/D Converter Data 0 */
+#define CPCAP_REG_ADCD1 0x0c0c /* A/D Converter Data 1 */
+#define CPCAP_REG_ADCD2 0x0c10 /* A/D Converter Data 2 */
+#define CPCAP_REG_ADCD3 0x0c14 /* A/D Converter Data 3 */
+#define CPCAP_REG_ADCD4 0x0c18 /* A/D Converter Data 4 */
+#define CPCAP_REG_ADCD5 0x0c1c /* A/D Converter Data 5 */
+#define CPCAP_REG_ADCD6 0x0c20 /* A/D Converter Data 6 */
+#define CPCAP_REG_ADCD7 0x0c24 /* A/D Converter Data 7 */
+#define CPCAP_REG_ADCAL1 0x0c28 /* A/D Converter Calibration 1 */
+#define CPCAP_REG_ADCAL2 0x0c2c /* A/D Converter Calibration 2 */
+
+#define CPCAP_REG_USBC1 0x0e00 /* USB Control 1 */
+#define CPCAP_REG_USBC2 0x0e04 /* USB Control 2 */
+#define CPCAP_REG_USBC3 0x0e08 /* USB Control 3 */
+#define CPCAP_REG_UVIDL 0x0e0c /* ULPI Vendor ID Low */
+#define CPCAP_REG_UVIDH 0x0e10 /* ULPI Vendor ID High */
+#define CPCAP_REG_UPIDL 0x0e14 /* ULPI Product ID Low */
+#define CPCAP_REG_UPIDH 0x0e18 /* ULPI Product ID High */
+#define CPCAP_REG_UFC1 0x0e1c /* ULPI Function Control 1 */
+#define CPCAP_REG_UFC2 0x0e20 /* ULPI Function Control 2 */
+#define CPCAP_REG_UFC3 0x0e24 /* ULPI Function Control 3 */
+#define CPCAP_REG_UIC1 0x0e28 /* ULPI Interface Control 1 */
+#define CPCAP_REG_UIC2 0x0e2c /* ULPI Interface Control 2 */
+#define CPCAP_REG_UIC3 0x0e30 /* ULPI Interface Control 3 */
+#define CPCAP_REG_USBOTG1 0x0e34 /* USB OTG Control 1 */
+#define CPCAP_REG_USBOTG2 0x0e38 /* USB OTG Control 2 */
+#define CPCAP_REG_USBOTG3 0x0e3c /* USB OTG Control 3 */
+#define CPCAP_REG_UIER1 0x0e40 /* USB Interrupt Enable Rising 1 */
+#define CPCAP_REG_UIER2 0x0e44 /* USB Interrupt Enable Rising 2 */
+#define CPCAP_REG_UIER3 0x0e48 /* USB Interrupt Enable Rising 3 */
+#define CPCAP_REG_UIEF1 0x0e4c /* USB Interrupt Enable Falling 1 */
+#define CPCAP_REG_UIEF2 0x0e50 /* USB Interrupt Enable Falling 1 */
+#define CPCAP_REG_UIEF3 0x0e54 /* USB Interrupt Enable Falling 1 */
+#define CPCAP_REG_UIS 0x0e58 /* USB Interrupt Status */
+#define CPCAP_REG_UIL 0x0e5c /* USB Interrupt Latch */
+#define CPCAP_REG_USBD 0x0e60 /* USB Debug */
+#define CPCAP_REG_SCR1 0x0e64 /* Scratch 1 */
+#define CPCAP_REG_SCR2 0x0e68 /* Scratch 2 */
+#define CPCAP_REG_SCR3 0x0e6c /* Scratch 3 */
+
+#define CPCAP_REG_VMC 0x0eac /* Video Mux Control */
+#define CPCAP_REG_OWDC 0x0eb0 /* One Wire Device Control */
+#define CPCAP_REG_GPIO0 0x0eb4 /* GPIO 0 Control */
+
+#define CPCAP_REG_GPIO1 0x0ebc /* GPIO 1 Control */
+
+#define CPCAP_REG_GPIO2 0x0ec4 /* GPIO 2 Control */
+
+#define CPCAP_REG_GPIO3 0x0ecc /* GPIO 3 Control */
+
+#define CPCAP_REG_GPIO4 0x0ed4 /* GPIO 4 Control */
+
+#define CPCAP_REG_GPIO5 0x0edc /* GPIO 5 Control */
+
+#define CPCAP_REG_GPIO6 0x0ee4 /* GPIO 6 Control */
+
+#define CPCAP_REG_MDLC 0x1000 /* Main Display Lighting Control */
+#define CPCAP_REG_KLC 0x1004 /* Keypad Lighting Control */
+#define CPCAP_REG_ADLC 0x1008 /* Aux Display Lighting Control */
+#define CPCAP_REG_REDC 0x100c /* Red Triode Control */
+#define CPCAP_REG_GREENC 0x1010 /* Green Triode Control */
+#define CPCAP_REG_BLUEC 0x1014 /* Blue Triode Control */
+#define CPCAP_REG_CFC 0x1018 /* Camera Flash Control */
+#define CPCAP_REG_ABC 0x101c /* Adaptive Boost Control */
+#define CPCAP_REG_BLEDC 0x1020 /* Bluetooth LED Control */
+#define CPCAP_REG_CLEDC 0x1024 /* Camera Privacy LED Control */
+
+#define CPCAP_REG_OW1C 0x1200 /* One Wire 1 Command */
+#define CPCAP_REG_OW1D 0x1204 /* One Wire 1 Data */
+#define CPCAP_REG_OW1I 0x1208 /* One Wire 1 Interrupt */
+#define CPCAP_REG_OW1IE 0x120c /* One Wire 1 Interrupt Enable */
+
+#define CPCAP_REG_OW1 0x1214 /* One Wire 1 Control */
+
+#define CPCAP_REG_OW2C 0x1220 /* One Wire 2 Command */
+#define CPCAP_REG_OW2D 0x1224 /* One Wire 2 Data */
+#define CPCAP_REG_OW2I 0x1228 /* One Wire 2 Interrupt */
+#define CPCAP_REG_OW2IE 0x122c /* One Wire 2 Interrupt Enable */
+
+#define CPCAP_REG_OW2 0x1234 /* One Wire 2 Control */
+
+#define CPCAP_REG_OW3C 0x1240 /* One Wire 3 Command */
+#define CPCAP_REG_OW3D 0x1244 /* One Wire 3 Data */
+#define CPCAP_REG_OW3I 0x1248 /* One Wire 3 Interrupt */
+#define CPCAP_REG_OW3IE 0x124c /* One Wire 3 Interrupt Enable */
+
+#define CPCAP_REG_OW3 0x1254 /* One Wire 3 Control */
+#define CPCAP_REG_GCAIC 0x1258 /* GCAI Clock Control */
+#define CPCAP_REG_GCAIM 0x125c /* GCAI GPIO Mode */
+#define CPCAP_REG_LGDIR 0x1260 /* LMR GCAI GPIO Direction */
+#define CPCAP_REG_LGPU 0x1264 /* LMR GCAI GPIO Pull-up */
+#define CPCAP_REG_LGPIN 0x1268 /* LMR GCAI GPIO Pin */
+#define CPCAP_REG_LGMASK 0x126c /* LMR GCAI GPIO Mask */
+#define CPCAP_REG_LDEB 0x1270 /* LMR Debounce Settings */
+#define CPCAP_REG_LGDET 0x1274 /* LMR GCAI Detach Detect */
+#define CPCAP_REG_LMISC 0x1278 /* LMR Misc Bits */
+#define CPCAP_REG_LMACE 0x127c /* LMR Mace IC Support */
+
+#define CPCAP_REG_TEST 0x7c00 /* Test */
+
+#define CPCAP_REG_ST_TEST1 0x7d08 /* ST Test1 */
+
+#define CPCAP_REG_ST_TEST2 0x7d18 /* ST Test2 */
+
+#endif /* _CPCAP_H_ */
--
2.43.0
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