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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/regulator/max77802-regulator.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski:
"Core:
- Add dedicated kmem_cache for typical/small skb->head, avoid having
to access struct page at kfree time, and improve memory use.
- Introduce sysctl to set default RPS configuration for new netdevs.
- Define Netlink protocol specification format which can be used to
describe messages used by each family and auto-generate parsers.
Add tools for generating kernel data structures and uAPI headers.
- Expose all net/core sysctls inside netns.
- Remove 4s sleep in netpoll if carrier is instantly detected on
boot.
- Add configurable limit of MDB entries per port, and port-vlan.
- Continue populating drop reasons throughout the stack.
- Retire a handful of legacy Qdiscs and classifiers.
Protocols:
- Support IPv4 big TCP (TSO frames larger than 64kB).
- Add IP_LOCAL_PORT_RANGE socket option, to control local port range
on socket by socket basis.
- Track and report in procfs number of MPTCP sockets used.
- Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
manager.
- IPv6: don't check net.ipv6.route.max_size and rely on garbage
collection to free memory (similarly to IPv4).
- Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).
- ICMP: add per-rate limit counters.
- Add support for user scanning requests in ieee802154.
- Remove static WEP support.
- Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
reporting.
- WiFi 7 EHT channel puncturing support (client & AP).
BPF:
- Add a rbtree data structure following the "next-gen data structure"
precedent set by recently added linked list, that is, by using
kfunc + kptr instead of adding a new BPF map type.
- Expose XDP hints via kfuncs with initial support for RX hash and
timestamp metadata.
- Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
better support decap on GRE tunnel devices not operating in collect
metadata.
- Improve x86 JIT's codegen for PROBE_MEM runtime error checks.
- Remove the need for trace_printk_lock for bpf_trace_printk and
bpf_trace_vprintk helpers.
- Extend libbpf's bpf_tracing.h support for tracing arguments of
kprobes/uprobes and syscall as a special case.
- Significantly reduce the search time for module symbols by
livepatch and BPF.
- Enable cpumasks to be used as kptrs, which is useful for tracing
programs tracking which tasks end up running on which CPUs in
different time intervals.
- Add support for BPF trampoline on s390x and riscv64.
- Add capability to export the XDP features supported by the NIC.
- Add __bpf_kfunc tag for marking kernel functions as kfuncs.
- Add cgroup.memory=nobpf kernel parameter option to disable BPF
memory accounting for container environments.
Netfilter:
- Remove the CLUSTERIP target. It has been marked as obsolete for
years, and we still have WARN splats wrt races of the out-of-band
/proc interface installed by this target.
- Add 'destroy' commands to nf_tables. They are identical to the
existing 'delete' commands, but do not return an error if the
referenced object (set, chain, rule...) did not exist.
Driver API:
- Improve cpumask_local_spread() locality to help NICs set the right
IRQ affinity on AMD platforms.
- Separate C22 and C45 MDIO bus transactions more clearly.
- Introduce new DCB table to control DSCP rewrite on egress.
- Support configuration of Physical Layer Collision Avoidance (PLCA)
Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
shared medium Ethernet.
- Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
preemption of low priority frames by high priority frames.
- Add support for controlling MACSec offload using netlink SET.
- Rework devlink instance refcounts to allow registration and
de-registration under the instance lock. Split the code into
multiple files, drop some of the unnecessarily granular locks and
factor out common parts of netlink operation handling.
- Add TX frame aggregation parameters (for USB drivers).
- Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
messages with notifications for debug.
- Allow offloading of UDP NEW connections via act_ct.
- Add support for per action HW stats in TC.
- Support hardware miss to TC action (continue processing in SW from
a specific point in the action chain).
- Warn if old Wireless Extension user space interface is used with
modern cfg80211/mac80211 drivers. Do not support Wireless
Extensions for Wi-Fi 7 devices at all. Everyone should switch to
using nl80211 interface instead.
- Improve the CAN bit timing configuration. Use extack to return
error messages directly to user space, update the SJW handling,
including the definition of a new default value that will benefit
CAN-FD controllers, by increasing their oscillator tolerance.
New hardware / drivers:
- Ethernet:
- nVidia BlueField-3 support (control traffic driver)
- Ethernet support for imx93 SoCs
- Motorcomm yt8531 gigabit Ethernet PHY
- onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
- Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
- Amlogic gxl MDIO mux
- WiFi:
- RealTek RTL8188EU (rtl8xxxu)
- Qualcomm Wi-Fi 7 devices (ath12k)
- CAN:
- Renesas R-Car V4H
Drivers:
- Bluetooth:
- Set Per Platform Antenna Gain (PPAG) for Intel controllers.
- Ethernet NICs:
- Intel (1G, igc):
- support TSN / Qbv / packet scheduling features of i226 model
- Intel (100G, ice):
- use GNSS subsystem instead of TTY
- multi-buffer XDP support
- extend support for GPIO pins to E823 devices
- nVidia/Mellanox:
- update the shared buffer configuration on PFC commands
- implement PTP adjphase function for HW offset control
- TC support for Geneve and GRE with VF tunnel offload
- more efficient crypto key management method
- multi-port eswitch support
- Netronome/Corigine:
- add DCB IEEE support
- support IPsec offloading for NFP3800
- Freescale/NXP (enetc):
- support XDP_REDIRECT for XDP non-linear buffers
- improve reconfig, avoid link flap and waiting for idle
- support MAC Merge layer
- Other NICs:
- sfc/ef100: add basic devlink support for ef100
- ionic: rx_push mode operation (writing descriptors via MMIO)
- bnxt: use the auxiliary bus abstraction for RDMA
- r8169: disable ASPM and reset bus in case of tx timeout
- cpsw: support QSGMII mode for J721e CPSW9G
- cpts: support pulse-per-second output
- ngbe: add an mdio bus driver
- usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
- r8152: handle devices with FW with NCM support
- amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
- virtio-net: support multi buffer XDP
- virtio/vsock: replace virtio_vsock_pkt with sk_buff
- tsnep: XDP support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add support for latency TLV (in FW control messages)
- Microchip (sparx5):
- separate explicit and implicit traffic forwarding rules, make
the implicit rules always active
- add support for egress DSCP rewrite
- IS0 VCAP support (Ingress Classification)
- IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
etc.)
- ES2 VCAP support (Egress Access Control)
- support for Per-Stream Filtering and Policing (802.1Q,
8.6.5.1)
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- add MAB (port auth) offload support
- enable PTP receive for mv88e6390
- NXP (ocelot):
- support MAC Merge layer
- support for the the vsc7512 internal copper phys
- Microchip:
- lan9303: convert to PHYLINK
- lan966x: support TC flower filter statistics
- lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
- lan937x: support Credit Based Shaper configuration
- ksz9477: support Energy Efficient Ethernet
- other:
- qca8k: convert to regmap read/write API, use bulk operations
- rswitch: Improve TX timestamp accuracy
- Intel WiFi (iwlwifi):
- EHT (Wi-Fi 7) rate reporting
- STEP equalizer support: transfer some STEP (connection to radio
on platforms with integrated wifi) related parameters from the
BIOS to the firmware.
- Qualcomm 802.11ax WiFi (ath11k):
- IPQ5018 support
- Fine Timing Measurement (FTM) responder role support
- channel 177 support
- MediaTek WiFi (mt76):
- per-PHY LED support
- mt7996: EHT (Wi-Fi 7) support
- Wireless Ethernet Dispatch (WED) reset support
- switch to using page pool allocator
- RealTek WiFi (rtw89):
- support new version of Bluetooth co-existance
- Mobile:
- rmnet: support TX aggregation"
* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
page_pool: add a comment explaining the fragment counter usage
net: ethtool: fix __ethtool_dev_mm_supported() implementation
ethtool: pse-pd: Fix double word in comments
xsk: add linux/vmalloc.h to xsk.c
sefltests: netdevsim: wait for devlink instance after netns removal
selftest: fib_tests: Always cleanup before exit
net/mlx5e: Align IPsec ASO result memory to be as required by hardware
net/mlx5e: TC, Set CT miss to the specific ct action instance
net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
net/mlx5: Refactor tc miss handling to a single function
net/mlx5: Kconfig: Make tc offload depend on tc skb extension
net/sched: flower: Support hardware miss to tc action
net/sched: flower: Move filter handle initialization earlier
net/sched: cls_api: Support hardware miss to tc action
net/sched: Rename user cookie and act cookie
sfc: fix builds without CONFIG_RTC_LIB
sfc: clean up some inconsistent indentings
net/mlx4_en: Introduce flexible array to silence overflow warning
net: lan966x: Fix possible deadlock inside PTP
net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
...
Diffstat (limited to 'drivers/regulator/max77802-regulator.c')
-rw-r--r-- | drivers/regulator/max77802-regulator.c | 552 |
1 files changed, 552 insertions, 0 deletions
diff --git a/drivers/regulator/max77802-regulator.c b/drivers/regulator/max77802-regulator.c new file mode 100644 index 000000000..21e0eb0f4 --- /dev/null +++ b/drivers/regulator/max77802-regulator.c @@ -0,0 +1,552 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// max77802.c - Regulator driver for the Maxim 77802 +// +// Copyright (C) 2013-2014 Google, Inc +// Simon Glass <sjg@chromium.org> +// +// Copyright (C) 2012 Samsung Electronics +// Chiwoong Byun <woong.byun@samsung.com> +// Jonghwa Lee <jonghwa3.lee@samsung.com> +// +// This driver is based on max8997.c + +#include <linux/kernel.h> +#include <linux/bug.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> +#include <linux/mfd/max77686.h> +#include <linux/mfd/max77686-private.h> +#include <dt-bindings/regulator/maxim,max77802.h> + +/* Default ramp delay in case it is not manually set */ +#define MAX77802_RAMP_DELAY 100000 /* uV/us */ + +#define MAX77802_OPMODE_SHIFT_LDO 6 +#define MAX77802_OPMODE_BUCK234_SHIFT 4 +#define MAX77802_OPMODE_MASK 0x3 + +#define MAX77802_VSEL_MASK 0x3F +#define MAX77802_DVS_VSEL_MASK 0xFF + +#define MAX77802_RAMP_RATE_MASK_2BIT 0xC0 +#define MAX77802_RAMP_RATE_SHIFT_2BIT 6 +#define MAX77802_RAMP_RATE_MASK_4BIT 0xF0 +#define MAX77802_RAMP_RATE_SHIFT_4BIT 4 + +#define MAX77802_STATUS_OFF 0x0 +#define MAX77802_OFF_PWRREQ 0x1 +#define MAX77802_LP_PWRREQ 0x2 + +static const unsigned int max77802_buck234_ramp_table[] = { + 12500, + 25000, + 50000, + 100000, +}; + +static const unsigned int max77802_buck16_ramp_table[] = { + 1000, 2000, 3030, 4000, + 5000, 5880, 7140, 8330, + 9090, 10000, 11110, 12500, + 16670, 25000, 50000, 100000, +}; + +struct max77802_regulator_prv { + /* Array indexed by regulator id */ + unsigned int opmode[MAX77802_REG_MAX]; +}; + +static inline unsigned int max77802_map_mode(unsigned int mode) +{ + return mode == MAX77802_OPMODE_NORMAL ? + REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY; +} + +static int max77802_get_opmode_shift(int id) +{ + if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 && + id <= MAX77802_BUCK10)) + return 0; + + if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4) + return MAX77802_OPMODE_BUCK234_SHIFT; + + if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35) + return MAX77802_OPMODE_SHIFT_LDO; + + return -EINVAL; +} + +/** + * max77802_set_suspend_disable - Disable the regulator during system suspend + * @rdev: regulator to mark as disabled + * + * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ. + * Configure the regulator so the PMIC will turn it OFF during system suspend. + */ +static int max77802_set_suspend_disable(struct regulator_dev *rdev) +{ + unsigned int val = MAX77802_OFF_PWRREQ; + struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + int shift = max77802_get_opmode_shift(id); + + max77802->opmode[id] = val; + return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, val << shift); +} + +/* + * Some LDOs support Low Power Mode while the system is running. + * + * LDOs 1, 3, 20, 21. + */ +static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode) +{ + struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + unsigned int val; + int shift = max77802_get_opmode_shift(id); + + switch (mode) { + case REGULATOR_MODE_STANDBY: + val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */ + break; + case REGULATOR_MODE_NORMAL: + val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */ + break; + default: + dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", + rdev->desc->name, mode); + return -EINVAL; + } + + max77802->opmode[id] = val; + return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, val << shift); +} + +static unsigned max77802_get_mode(struct regulator_dev *rdev) +{ + struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + + return max77802_map_mode(max77802->opmode[id]); +} + +/** + * max77802_set_suspend_mode - set regulator opmode when the system is suspended + * @rdev: regulator to change mode + * @mode: operating mode to be set + * + * Will set the operating mode for the regulators during system suspend. + * This function is valid for the three different enable control logics: + * + * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35) + * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21) + * Enable Control Logic3 by PWRREQ (LDO 3) + * + * If setting the regulator mode fails, the function only warns but does + * not return an error code to avoid the regulator core to stop setting + * the operating mode for the remaining regulators. + */ +static int max77802_set_suspend_mode(struct regulator_dev *rdev, + unsigned int mode) +{ + struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + unsigned int val; + int shift = max77802_get_opmode_shift(id); + + /* + * If the regulator has been disabled for suspend + * then is invalid to try setting a suspend mode. + */ + if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) { + dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n", + rdev->desc->name, mode); + return 0; + } + + switch (mode) { + case REGULATOR_MODE_STANDBY: + /* + * If the regulator opmode is normal then enable + * ON in Low Power Mode by PWRREQ. If the mode is + * already Low Power then no action is required. + */ + if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL) + val = MAX77802_LP_PWRREQ; + else + return 0; + break; + case REGULATOR_MODE_NORMAL: + /* + * If the regulator operating mode is Low Power then + * normal is not a valid opmode in suspend. If the + * mode is already normal then no action is required. + */ + if (max77802->opmode[id] == MAX77802_OPMODE_LP) + dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n", + rdev->desc->name, mode); + return 0; + default: + dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n", + rdev->desc->name, mode); + return -EINVAL; + } + + return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, val << shift); +} + +static int max77802_enable(struct regulator_dev *rdev) +{ + struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev); + int id = rdev_get_id(rdev); + int shift = max77802_get_opmode_shift(id); + + if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) + max77802->opmode[id] = MAX77802_OPMODE_NORMAL; + + return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, + rdev->desc->enable_mask, + max77802->opmode[id] << shift); +} + +/* + * LDOs 2, 4-19, 22-35 + */ +static const struct regulator_ops max77802_ldo_ops_logic1 = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = max77802_enable, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_suspend_disable = max77802_set_suspend_disable, + .set_suspend_mode = max77802_set_suspend_mode, +}; + +/* + * LDOs 1, 20, 21, 3 + */ +static const struct regulator_ops max77802_ldo_ops_logic2 = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = max77802_enable, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_mode = max77802_set_mode, + .get_mode = max77802_get_mode, + .set_suspend_mode = max77802_set_suspend_mode, +}; + +/* BUCKS 1, 6 */ +static const struct regulator_ops max77802_buck_16_dvs_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = max77802_enable, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_ramp_delay = regulator_set_ramp_delay_regmap, + .set_suspend_disable = max77802_set_suspend_disable, +}; + +/* BUCKs 2-4 */ +static const struct regulator_ops max77802_buck_234_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = max77802_enable, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_ramp_delay = regulator_set_ramp_delay_regmap, + .set_suspend_disable = max77802_set_suspend_disable, + .set_suspend_mode = max77802_set_suspend_mode, +}; + +/* BUCKs 5, 7-10 */ +static const struct regulator_ops max77802_buck_dvs_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = max77802_enable, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_suspend_disable = max77802_set_suspend_disable, +}; + +/* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */ +#define regulator_77802_desc_p_ldo(num, supply, log) { \ + .name = "LDO"#num, \ + .of_match = of_match_ptr("LDO"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = MAX77802_LDO##num, \ + .supply_name = "inl"#supply, \ + .ops = &max77802_ldo_ops_logic##log, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = 800000, \ + .uV_step = 50000, \ + .ramp_delay = MAX77802_RAMP_DELAY, \ + .n_voltages = 1 << 6, \ + .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ + .vsel_mask = MAX77802_VSEL_MASK, \ + .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ + .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ + .of_map_mode = max77802_map_mode, \ +} + +/* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */ +#define regulator_77802_desc_n_ldo(num, supply, log) { \ + .name = "LDO"#num, \ + .of_match = of_match_ptr("LDO"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = MAX77802_LDO##num, \ + .supply_name = "inl"#supply, \ + .ops = &max77802_ldo_ops_logic##log, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = 800000, \ + .uV_step = 25000, \ + .ramp_delay = MAX77802_RAMP_DELAY, \ + .n_voltages = 1 << 6, \ + .vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ + .vsel_mask = MAX77802_VSEL_MASK, \ + .enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \ + .enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \ + .of_map_mode = max77802_map_mode, \ +} + +/* BUCKs 1, 6 */ +#define regulator_77802_desc_16_buck(num) { \ + .name = "BUCK"#num, \ + .of_match = of_match_ptr("BUCK"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = MAX77802_BUCK##num, \ + .supply_name = "inb"#num, \ + .ops = &max77802_buck_16_dvs_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = 612500, \ + .uV_step = 6250, \ + .ramp_delay = MAX77802_RAMP_DELAY, \ + .n_voltages = 1 << 8, \ + .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ + .vsel_mask = MAX77802_DVS_VSEL_MASK, \ + .enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \ + .enable_mask = MAX77802_OPMODE_MASK, \ + .ramp_reg = MAX77802_REG_BUCK ## num ## CTRL, \ + .ramp_mask = MAX77802_RAMP_RATE_MASK_4BIT, \ + .ramp_delay_table = max77802_buck16_ramp_table, \ + .n_ramp_values = ARRAY_SIZE(max77802_buck16_ramp_table), \ + .of_map_mode = max77802_map_mode, \ +} + +/* BUCKS 2-4 */ +#define regulator_77802_desc_234_buck(num) { \ + .name = "BUCK"#num, \ + .of_match = of_match_ptr("BUCK"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = MAX77802_BUCK##num, \ + .supply_name = "inb"#num, \ + .ops = &max77802_buck_234_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = 600000, \ + .uV_step = 6250, \ + .ramp_delay = MAX77802_RAMP_DELAY, \ + .n_voltages = 0x91, \ + .vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \ + .vsel_mask = MAX77802_DVS_VSEL_MASK, \ + .enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ + .enable_mask = MAX77802_OPMODE_MASK << \ + MAX77802_OPMODE_BUCK234_SHIFT, \ + .ramp_reg = MAX77802_REG_BUCK ## num ## CTRL1, \ + .ramp_mask = MAX77802_RAMP_RATE_MASK_2BIT, \ + .ramp_delay_table = max77802_buck234_ramp_table, \ + .n_ramp_values = ARRAY_SIZE(max77802_buck234_ramp_table), \ + .of_map_mode = max77802_map_mode, \ +} + +/* BUCK 5 */ +#define regulator_77802_desc_buck5(num) { \ + .name = "BUCK"#num, \ + .of_match = of_match_ptr("BUCK"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = MAX77802_BUCK##num, \ + .supply_name = "inb"#num, \ + .ops = &max77802_buck_dvs_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = 750000, \ + .uV_step = 50000, \ + .ramp_delay = MAX77802_RAMP_DELAY, \ + .n_voltages = 1 << 6, \ + .vsel_reg = MAX77802_REG_BUCK5OUT, \ + .vsel_mask = MAX77802_VSEL_MASK, \ + .enable_reg = MAX77802_REG_BUCK5CTRL, \ + .enable_mask = MAX77802_OPMODE_MASK, \ + .of_map_mode = max77802_map_mode, \ +} + +/* BUCKs 7-10 */ +#define regulator_77802_desc_buck7_10(num) { \ + .name = "BUCK"#num, \ + .of_match = of_match_ptr("BUCK"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = MAX77802_BUCK##num, \ + .supply_name = "inb"#num, \ + .ops = &max77802_buck_dvs_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = 750000, \ + .uV_step = 50000, \ + .ramp_delay = MAX77802_RAMP_DELAY, \ + .n_voltages = 1 << 6, \ + .vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \ + .vsel_mask = MAX77802_VSEL_MASK, \ + .enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \ + .enable_mask = MAX77802_OPMODE_MASK, \ + .of_map_mode = max77802_map_mode, \ +} + +static const struct regulator_desc regulators[] = { + regulator_77802_desc_16_buck(1), + regulator_77802_desc_234_buck(2), + regulator_77802_desc_234_buck(3), + regulator_77802_desc_234_buck(4), + regulator_77802_desc_buck5(5), + regulator_77802_desc_16_buck(6), + regulator_77802_desc_buck7_10(7), + regulator_77802_desc_buck7_10(8), + regulator_77802_desc_buck7_10(9), + regulator_77802_desc_buck7_10(10), + regulator_77802_desc_n_ldo(1, 10, 2), + regulator_77802_desc_n_ldo(2, 10, 1), + regulator_77802_desc_p_ldo(3, 3, 2), + regulator_77802_desc_p_ldo(4, 6, 1), + regulator_77802_desc_p_ldo(5, 3, 1), + regulator_77802_desc_p_ldo(6, 3, 1), + regulator_77802_desc_p_ldo(7, 3, 1), + regulator_77802_desc_n_ldo(8, 1, 1), + regulator_77802_desc_p_ldo(9, 5, 1), + regulator_77802_desc_p_ldo(10, 4, 1), + regulator_77802_desc_p_ldo(11, 4, 1), + regulator_77802_desc_p_ldo(12, 9, 1), + regulator_77802_desc_p_ldo(13, 4, 1), + regulator_77802_desc_p_ldo(14, 4, 1), + regulator_77802_desc_n_ldo(15, 1, 1), + regulator_77802_desc_n_ldo(17, 2, 1), + regulator_77802_desc_p_ldo(18, 7, 1), + regulator_77802_desc_p_ldo(19, 5, 1), + regulator_77802_desc_p_ldo(20, 7, 2), + regulator_77802_desc_p_ldo(21, 6, 2), + regulator_77802_desc_p_ldo(23, 9, 1), + regulator_77802_desc_p_ldo(24, 6, 1), + regulator_77802_desc_p_ldo(25, 9, 1), + regulator_77802_desc_p_ldo(26, 9, 1), + regulator_77802_desc_n_ldo(27, 2, 1), + regulator_77802_desc_p_ldo(28, 7, 1), + regulator_77802_desc_p_ldo(29, 7, 1), + regulator_77802_desc_n_ldo(30, 2, 1), + regulator_77802_desc_p_ldo(32, 9, 1), + regulator_77802_desc_p_ldo(33, 6, 1), + regulator_77802_desc_p_ldo(34, 9, 1), + regulator_77802_desc_n_ldo(35, 2, 1), +}; + +static int max77802_pmic_probe(struct platform_device *pdev) +{ + struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct max77802_regulator_prv *max77802; + int i, val; + struct regulator_config config = { }; + + max77802 = devm_kzalloc(&pdev->dev, + sizeof(struct max77802_regulator_prv), + GFP_KERNEL); + if (!max77802) + return -ENOMEM; + + config.dev = iodev->dev; + config.regmap = iodev->regmap; + config.driver_data = max77802; + platform_set_drvdata(pdev, max77802); + + for (i = 0; i < MAX77802_REG_MAX; i++) { + struct regulator_dev *rdev; + int id = regulators[i].id; + int shift = max77802_get_opmode_shift(id); + int ret; + + ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); + if (ret < 0) { + dev_warn(&pdev->dev, + "cannot read current mode for %d\n", i); + val = MAX77802_OPMODE_NORMAL; + } else { + val = val >> shift & MAX77802_OPMODE_MASK; + } + + /* + * If the regulator is disabled and the system warm rebooted, + * the hardware reports OFF as the regulator operating mode. + * Default to operating mode NORMAL in that case. + */ + if (val == MAX77802_STATUS_OFF) + max77802->opmode[id] = MAX77802_OPMODE_NORMAL; + else + max77802->opmode[id] = val; + + rdev = devm_regulator_register(&pdev->dev, + ®ulators[i], &config); + if (IS_ERR(rdev)) { + ret = PTR_ERR(rdev); + dev_err(&pdev->dev, + "regulator init failed for %d: %d\n", i, ret); + return ret; + } + } + + return 0; +} + +static const struct platform_device_id max77802_pmic_id[] = { + {"max77802-pmic", 0}, + { }, +}; +MODULE_DEVICE_TABLE(platform, max77802_pmic_id); + +static struct platform_driver max77802_pmic_driver = { + .driver = { + .name = "max77802-pmic", + }, + .probe = max77802_pmic_probe, + .id_table = max77802_pmic_id, +}; + +module_platform_driver(max77802_pmic_driver); + +MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver"); +MODULE_AUTHOR("Simon Glass <sjg@chromium.org>"); +MODULE_LICENSE("GPL"); |