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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3925ff24552sm1047301a91.10.2026.08.06.23.21.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Aug 2026 23:21:52 -0700 (PDT) From: Fenglin Wu Date: Thu, 06 Aug 2026 23:21:41 -0700 Subject: [PATCH v6 2/2] input: misc: Add Qualcomm SPMI PMIC haptics driver Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260806-qcom-spmi-haptics-v6-2-19fcecd5204f@oss.qualcomm.com> References: <20260806-qcom-spmi-haptics-v6-0-19fcecd5204f@oss.qualcomm.com> In-Reply-To: <20260806-qcom-spmi-haptics-v6-0-19fcecd5204f@oss.qualcomm.com> To: linux-arm-msm@vger.kernel.org, Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Stephen Boyd , Bjorn Andersson , Konrad Dybcio Cc: David Collins , Subbaraman Narayanamurthy , Kamal Wadhwa , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Fenglin Wu X-Mailer: b4 0.16-dev-17187 X-Developer-Signature: v=1; a=ed25519-sha256; t=1786083708; l=38024; i=fenglin.wu@oss.qualcomm.com; s=20260324; h=from:subject:message-id; bh=ZEmtTA+Sa+4Il621QbYdUYu2LJEBGXNdmQuO44qvoas=; b=kRwl34Qh1+i+x1n856D41+fGzNtYrciUTKN1zTAe/c4nQGEJDC/T6WiKsmLXCkb3AdZuho84E CQvXCP5Z6DtDVF3lLETlrGlIy4kGmAWfbawTUHOFoy2e2a9Kj5WA8S2 X-Developer-Key: i=fenglin.wu@oss.qualcomm.com; a=ed25519; pk=hJdt3E7o54lql+miD2GaxwF74cDyhgNwMbmFOZ46bRU= X-Authority-Analysis: v=2.4 cv=Rt/16imK c=1 sm=1 tr=0 ts=6a757982 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=3_Ji5GFWK-rhiyT1rKgA:9 a=Of39h0EOZMdwZqCN:21 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA3MDA0NSBTYWx0ZWRfX4NMw57O0dck1 pAvcNIPWEeBiEFkEPVyRoXs3+AhaTmL5tra+B5udh1Z9W8qT1OdtgSEWV7t+twFZNkuRXtUHCkD hXbpVidxEw27wSTX/8SD+Q2A/w69Fvjlu6Vmj78WiIq04I8ux4YnXQBmuFV62l9ePijllQ6PMsW O898BPq8bfpnuZmrE17KzLJR1qXDN5eiOa3p7NTaZSunhhtAZR3dzQmy/RpRfpLrs0JSnDobQvQ 670DwyoGn/InHoTSLN3hgrQ/GUnq7ga4fAuLraoQkpa5uFJkGoyUVQTjjgwD6sxBoDcWIK7m8LJ sG2RrVBBGjvb1ezaj4uvC98bPLFsId9AmUSOKvKA56rfccXEFhKAETFkjKSG4/GSIQLupX/6lKe wosiMkQKT8O1KFGDE9mOpsXEvhqJeY2YIMT5RohpMzWxLq7rD0CgGOY5DL2g1k56w7Fd17sIk/l s/BhdvCPRaIxq+/WikQ== X-Proofpoint-GUID: _sM7Bu-slYm3kNkdS-3UZm3q3gsei5dH X-Proofpoint-Spam-Info: AW1haW4tMjYwODA3MDA0NSBTYWx0ZWRfXyqpi5QLILYoA m2MeaXQgzVsDheYHjXyjHtDBXy+hTVuGW8AchgaVUPwe2eCsnUe3jipguoOCU/8IFbTfcyCRqQH EJ5nVvH9jYf3oWEVpRKU9xYQodXQZKU= X-Proofpoint-ORIG-GUID: _sM7Bu-slYm3kNkdS-3UZm3q3gsei5dH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-07_01,2026-08-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 phishscore=0 clxscore=1015 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608070045 Add an initial driver for the Qualcomm PMIH0108 PMIC haptics module, named as HAP530_HV. This module supports several play modes, including DIRECT_PLAY, FIFO, PAT_MEM, and SWR, each with distinct data sourcing and hardware data handling logic. Currently, the driver provides support for two play modes using the input force-feedback framework: FF_CONSTANT effect for DIRECT_PLAY mode and FF_PERIODIC effect with FF_CUSTOM waveform for FIFO mode. Assisted-by: Claude:claude-4-8-opus Signed-off-by: Fenglin Wu --- drivers/input/misc/Kconfig | 11 + drivers/input/misc/Makefile | 1 + drivers/input/misc/qcom-spmi-haptics.c | 1252 ++++++++++++++++++++++++++++++++ 3 files changed, 1264 insertions(+) diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 1f6c57dba030..4f40940973e4 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -236,6 +236,17 @@ config INPUT_PMIC8XXX_PWRKEY To compile this driver as a module, choose M here: the module will be called pmic8xxx-pwrkey. +config INPUT_QCOM_SPMI_HAPTICS + tristate "Qualcomm SPMI PMIC haptics support" + depends on MFD_SPMI_PMIC + help + Say Y to enable support for the Qualcomm PMIH0108 SPMI PMIC haptics + module. Supports DIRECT_PLAY, FIFO streaming play modes via the + Linux input force-feedback framework. + + To compile this driver as a module, choose M here: the module will + be called qcom-spmi-haptics. + config INPUT_SPARCSPKR tristate "SPARC Speaker support" depends on PCI && SPARC64 diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 2281d6803fce..c5c9aa139a11 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -69,6 +69,7 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o obj-$(CONFIG_INPUT_POWERMATE) += powermate.o obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o obj-$(CONFIG_INPUT_PWM_VIBRA) += pwm-vibra.o +obj-$(CONFIG_INPUT_QCOM_SPMI_HAPTICS) += qcom-spmi-haptics.o obj-$(CONFIG_INPUT_QNAP_MCU) += qnap-mcu-input.o obj-$(CONFIG_INPUT_RAVE_SP_PWRBUTTON) += rave-sp-pwrbutton.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o diff --git a/drivers/input/misc/qcom-spmi-haptics.c b/drivers/input/misc/qcom-spmi-haptics.c new file mode 100644 index 000000000000..91465e7a6645 --- /dev/null +++ b/drivers/input/misc/qcom-spmi-haptics.c @@ -0,0 +1,1252 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* HAP_CFG register offsets, bit fields, value constants */ +#define HAP_CFG_INT_RT_STS_REG 0x10 +#define FIFO_EMPTY_BIT BIT(1) +#define HAP_CFG_EN_CTL_REG 0x46 +#define HAPTICS_EN_BIT BIT(7) +#define HAP_CFG_VMAX_REG 0x48 +#define VMAX_STEP_MV 50 +#define VMAX_MV_MAX 10000 +#define HAP_CFG_SPMI_PLAY_REG 0x4C +#define PLAY_EN_BIT BIT(7) +#define PAT_SRC_MASK GENMASK(2, 0) +#define PAT_SRC_FIFO 0 +#define PAT_SRC_DIRECT_PLAY 1 +#define HAP_CFG_TLRA_OL_HIGH_REG 0x5C +#define TLRA_OL_MSB_MASK GENMASK(3, 0) +#define TLRA_STEP_US 5 +#define TLRA_US_MAX 20475 +#define HAP_CFG_TLRA_OL_LOW_REG 0x5D +#define HAP_CFG_DRV_DUTY_CFG_REG 0x60 +#define ADT_DRV_DUTY_EN_BIT BIT(7) +#define ADT_BRK_DUTY_EN_BIT BIT(6) +#define DRV_DUTY_MASK GENMASK(5, 3) +#define AUTORES_DRV_DUTY_62P5 2 +#define BRK_DUTY_MASK GENMASK(2, 0) +#define AUTORES_BRK_DUTY_62P5 5 +#define HAP_CFG_ZX_WIND_CFG_REG 0x62 +#define ZX_DEBOUNCE_MASK GENMASK(6, 4) +#define AUTORES_ZX_DEBOUNCE 3 +#define ZX_WIN_HEIGHT_MASK GENMASK(2, 0) +#define AUTORES_ZX_WIN_HEIGHT 2 +#define HAP_CFG_AUTORES_CFG_REG 0x63 +#define AUTORES_EN_BIT BIT(7) +#define AUTORES_EN_DLY_MASK GENMASK(6, 2) +#define AUTORES_EN_DLY_CYCLES 10 +#define AUTORES_ERR_WIN_MASK GENMASK(1, 0) +#define AUTORES_ERR_WIN_25PCT 1 +#define HAP_CFG_FAULT_CLR_REG 0x66 +#define ZX_TO_FAULT_CLR_BIT BIT(4) +#define SC_CLR_BIT BIT(2) +#define AUTO_RES_ERR_CLR_BIT BIT(1) +#define HPWR_RDY_FAULT_CLR_BIT BIT(0) +#define FAULT_CLR_ALL (ZX_TO_FAULT_CLR_BIT | SC_CLR_BIT | \ + AUTO_RES_ERR_CLR_BIT | HPWR_RDY_FAULT_CLR_BIT) +#define HAP_CFG_RAMP_DN_CFG2_REG 0x86 +#define AUTORES_PRE_HIZ_DLY_10US 1 + +/* HAP_PTN register offsets, bit fields, value constants */ +#define HAP_PTN_FIFO_DIN_0_REG 0x20 +#define HAP_PTN_FIFO_PLAY_RATE_REG 0x24 +#define FIFO_PLAY_RATE_MASK GENMASK(3, 0) +#define HAP_PTN_DIRECT_PLAY_REG 0x26 +#define HAP_PTN_FIFO_EMPTY_CFG_REG 0x2A +#define FIFO_THRESH_LSB 64 +#define HAP_PTN_FIFO_DIN_1B_REG 0x2C +#define HAP_PTN_MEM_OP_ACCESS_REG 0x2D +#define MEM_FLUSH_RELOAD_BIT BIT(0) +#define HAP_PTN_MMAP_FIFO_REG 0xA0 +#define MMAP_FIFO_EXIST_BIT BIT(7) +#define MMAP_FIFO_LEN_MASK GENMASK(6, 0) + +#define HAP530_MEM_TOTAL_BYTES 8192 +#define FIFO_EMPTY_THRESH 256 +#define FIFO_INIT_FILL 320 + +#define HAPTICS_AUTOSUSPEND_MS 1000 + +/* + * FF_CUSTOM data layout (custom_data[] of type s16): + * [0] = play rate (PLAY_RATE_*) + * [1] = vmax in mV (0 = use device default from qcom,vmax-microvolt) + * [2..N-1] = signed 8-bit PCM samples packed one per s16 (lower byte used) + */ +#define CUSTOM_DATA_RATE_IDX 0 +#define CUSTOM_DATA_VMAX_IDX 1 +#define CUSTOM_DATA_SAMPLE_START 2 +#define CUSTOM_DATA_MAX_LEN (48 * 1024) + +#define HAPTICS_MAX_EFFECTS 8 + +enum qcom_haptics_mode { + HAPTICS_MODE_NONE, + HAPTICS_DIRECT_PLAY, + HAPTICS_FIFO, +}; + +enum qcom_haptics_play_rate { + PLAY_RATE_T_LRA = 0, + PLAY_RATE_T_LRA_DIV_2 = 1, + PLAY_RATE_T_LRA_DIV_4 = 2, + PLAY_RATE_T_LRA_DIV_8 = 3, + PLAY_RATE_T_LRA_X_2 = 4, + PLAY_RATE_T_LRA_X_4 = 5, + PLAY_RATE_T_LRA_X_8 = 6, + PLAY_RATE_RESERVED = 7, + PLAY_RATE_F_8KHZ = 8, + PLAY_RATE_F_16KHZ = 9, + PLAY_RATE_F_24KHZ = 10, + PLAY_RATE_F_32KHZ = 11, + PLAY_RATE_F_44P1KHZ = 12, + PLAY_RATE_F_48KHZ = 13, + PLAY_RATE_MAX = PLAY_RATE_F_48KHZ, +}; + +/** + * struct qcom_haptics_effect - A haptics effect + * @mode: haptics HW play mode + * @vmax_mv: peak voltage of the haptics output waveform + * @length_ms: vibration play duration + * @amplitude: DIRECT_PLAY mode output waveform amplitude + * @play_rate: FIFO mode play rate + * @fifo_data: 8-bit data samples consumed in FIFO mode + * @data_len: length of the FIFO data samples + */ +struct qcom_haptics_effect { + enum qcom_haptics_mode mode; + u32 vmax_mv; + u32 length_ms; + + u8 amplitude; + + enum qcom_haptics_play_rate play_rate; + s8 *fifo_data; + u32 data_len; +}; + +/** + * struct haptics_play_req - A haptics play request + * @node: list node of the request + * @effect_id: effect index of the request + * @play: flag of starting or stopping the play + */ +struct haptics_play_req { + struct list_head node; + int effect_id; + bool play; +}; + +/** + * struct qcom_haptics + * @dev: underlying SPMI device + * @regmap: regmap for SPMI register access + * @input: input device exposing the FF interface + * @cfg_base: base address of the CFG peripheral + * @ptn_base: base address of the PTN peripheral + * @t_lra_us: LRA resonance period in microseconds + * @vmax_mv: maximum actuator drive voltage in millivolts + * @fifo_len: programmed HW FIFO depth in bytes + * @gain: playback gain scaler + * @gain_work: work that changes gain setting for active play + * @play_work: delayed work that plays the queued requests + * @stop_work: delayed work that auto-stops the active effect on duration expiry + * @play_lock: mutex lock to serialize playbacks + * @play_queue_lock: spinlock protecting @play_queue + * @play_queue: The list of pending start/stop requests + * @active_effect_id: index into @effects[] currently under play + * @active_mode: mode of the effect currently armed in hardware + * @stop_timeline: the jiffies value at which @stop_work would execute + * @fifo_empty_irq: IRQ number for the FIFO-empty interrupt + * @pm_ref_held: true while a pm_runtime_get is held + * @irq_enabled: true if fifo_empty_irq is enabled + * @fifo_lock: mutex protecting the FIFO streaming data + * @fifo_data: pointer of the data buffer for FIFO streaming + * @data_len: length of the data buffer for current effect + * @data_written: number of samples written to the hardware FIFO + * @effects: table of the effects + */ +struct qcom_haptics { + struct device *dev; + struct regmap *regmap; + struct input_dev *input; + + u32 cfg_base; + u32 ptn_base; + u32 t_lra_us; + u32 vmax_mv; + u32 fifo_len; + atomic_t gain; + struct work_struct gain_work; + + struct delayed_work play_work; + struct delayed_work stop_work; + struct mutex play_lock; /* mutex used to serialize playbacks */ + + spinlock_t play_queue_lock; /* protects play_queue */ + struct list_head play_queue; + + int active_effect_id; + enum qcom_haptics_mode active_mode; + unsigned long stop_timeline; + + int fifo_empty_irq; + bool pm_ref_held; + bool irq_enabled; + + struct mutex fifo_lock; /* protect the FIFO data during play */ + const s8 *fifo_data; + u32 data_len; + u32 data_written; + + struct qcom_haptics_effect effects[HAPTICS_MAX_EFFECTS]; +}; + +static int cfg_write(struct qcom_haptics *h, u32 off, u32 val) +{ + return regmap_write(h->regmap, h->cfg_base + off, val); +} + +static int cfg_update_bits(struct qcom_haptics *h, u32 off, u32 mask, u32 val) +{ + return regmap_update_bits(h->regmap, h->cfg_base + off, mask, val); +} + +static int ptn_write(struct qcom_haptics *h, u32 off, u32 val) +{ + return regmap_write(h->regmap, h->ptn_base + off, val); +} + +static int ptn_update_bits(struct qcom_haptics *h, u32 off, u32 mask, u32 val) +{ + return regmap_update_bits(h->regmap, h->ptn_base + off, mask, val); +} + +static int ptn_bulk_write(struct qcom_haptics *h, u32 off, + const void *buf, size_t count) +{ + return regmap_bulk_write(h->regmap, h->ptn_base + off, buf, count); +} + +static int haptics_clear_faults(struct qcom_haptics *h) +{ + return cfg_write(h, HAP_CFG_FAULT_CLR_REG, FAULT_CLR_ALL); +} + +static int haptics_set_vmax(struct qcom_haptics *h, u32 vmax_mv) +{ + return cfg_write(h, HAP_CFG_VMAX_REG, vmax_mv / VMAX_STEP_MV); +} + +static int haptics_config_lra_period(struct qcom_haptics *h) +{ + u32 tmp = h->t_lra_us / TLRA_STEP_US; + int err; + + err = cfg_write(h, HAP_CFG_TLRA_OL_HIGH_REG, (tmp >> 8) & TLRA_OL_MSB_MASK); + if (err) + return err; + + err = cfg_write(h, HAP_CFG_TLRA_OL_LOW_REG, tmp & 0xFF); + if (err) + return err; + + return 0; +} + +static int haptics_enable_module(struct qcom_haptics *h, bool enable) +{ + return cfg_update_bits(h, HAP_CFG_EN_CTL_REG, HAPTICS_EN_BIT, + enable ? HAPTICS_EN_BIT : 0); +} + +static int haptics_configure_autores(struct qcom_haptics *h) +{ + int err; + + /* AUTORES_CFG: enable, 10-cycle delay, 25% error window */ + err = cfg_write(h, HAP_CFG_AUTORES_CFG_REG, + AUTORES_EN_BIT | + FIELD_PREP(AUTORES_EN_DLY_MASK, AUTORES_EN_DLY_CYCLES) | + FIELD_PREP(AUTORES_ERR_WIN_MASK, AUTORES_ERR_WIN_25PCT)); + if (err) + return err; + + /* DRV_DUTY: adaptive drive/brake duty cycles at 62.5% */ + err = cfg_write(h, HAP_CFG_DRV_DUTY_CFG_REG, + ADT_DRV_DUTY_EN_BIT | ADT_BRK_DUTY_EN_BIT | + FIELD_PREP(DRV_DUTY_MASK, AUTORES_DRV_DUTY_62P5) | + FIELD_PREP(BRK_DUTY_MASK, AUTORES_BRK_DUTY_62P5)); + if (err) + return err; + + /* Pre-HIZ delay: 10 µs */ + err = cfg_write(h, HAP_CFG_RAMP_DN_CFG2_REG, AUTORES_PRE_HIZ_DLY_10US); + if (err) + return err; + + /* Zero-cross window: debounce 3, no hysteresis, height 2 */ + err = cfg_write(h, HAP_CFG_ZX_WIND_CFG_REG, + FIELD_PREP(ZX_DEBOUNCE_MASK, AUTORES_ZX_DEBOUNCE) | + FIELD_PREP(ZX_WIN_HEIGHT_MASK, AUTORES_ZX_WIN_HEIGHT)); + if (err) + return err; + + return 0; +} + +static int haptics_write_fifo_chunk(struct qcom_haptics *h, + const s8 *data, u32 len) +{ + u32 bulk_len = ALIGN_DOWN(len, 4); + int i, err; + + /* + * FIFO data writing supports both 4-byte bulk writes using registers + * [HAP_PTN_FIFO_DIN_0_REG ... HAP_PTN_FIFO_DIN_3_REG], and 1-byte writes + * using the HAP_PTN_FIFO_DIN_1B_REG register. The 4-byte bulk write is more + * efficient, so use 4-byte writes for the initial 4-byte aligned data, + * and 1-byte writes for any trailing remainder. + */ + for (i = 0; i < bulk_len; i += 4) { + err = ptn_bulk_write(h, HAP_PTN_FIFO_DIN_0_REG, &data[i], 4); + if (err) + return err; + } + + for (; i < len; i++) { + err = ptn_write(h, HAP_PTN_FIFO_DIN_1B_REG, (u8)data[i]); + if (err) + return err; + } + + return 0; +} + +static int haptics_configure_fifo_mmap(struct qcom_haptics *h) +{ + u32 fifo_len, fifo_units; + + /* Config all memory space for FIFO usage for now */ + fifo_len = HAP530_MEM_TOTAL_BYTES; + fifo_len = ALIGN_DOWN(fifo_len, 64); + fifo_units = fifo_len / 64; + h->fifo_len = fifo_len; + + return ptn_write(h, HAP_PTN_MMAP_FIFO_REG, + MMAP_FIFO_EXIST_BIT | + FIELD_PREP(MMAP_FIFO_LEN_MASK, fifo_units - 1)); +} + +static u32 haptics_gain_scaled_vmax(struct qcom_haptics *h, u32 vmax_mv) +{ + u16 gain = atomic_read(&h->gain); + + return mult_frac(vmax_mv, gain, 0xFFFF); +} + +static void haptics_fifo_irq_enable(struct qcom_haptics *h, bool enable) +{ + if (h->irq_enabled == enable) + return; + + if (enable) + enable_irq(h->fifo_empty_irq); + else + disable_irq_nosync(h->fifo_empty_irq); + + h->irq_enabled = enable; +} + +static int haptics_enqueue_play_req(struct qcom_haptics *h, int effect_id, bool play) +{ + struct haptics_play_req *req; + + guard(spinlock_irqsave)(&h->play_queue_lock); + + /* + * Coalesce with an already queued request for + * the same effect instead of appending. + */ + list_for_each_entry(req, &h->play_queue, node) { + if (req->effect_id == effect_id) { + req->play = play; + return 0; + } + } + + req = kmalloc_obj(*req, GFP_ATOMIC); + if (!req) + return -ENOMEM; + + req->effect_id = effect_id; + req->play = play; + + list_add_tail(&req->node, &h->play_queue); + + return 0; +} + +static struct haptics_play_req *haptics_dequeue_play_req(struct qcom_haptics *h) +{ + struct haptics_play_req *req = NULL; + + guard(spinlock_irqsave)(&h->play_queue_lock); + + if (!list_empty(&h->play_queue)) { + req = list_first_entry(&h->play_queue, struct haptics_play_req, node); + list_del(&req->node); + } + + return req; +} + +static void haptics_queue_remove_effect(struct qcom_haptics *h, int effect_id) +{ + struct haptics_play_req *req, *tmp; + + guard(spinlock_irqsave)(&h->play_queue_lock); + + list_for_each_entry_safe(req, tmp, &h->play_queue, node) { + if (req->effect_id == effect_id) { + list_del(&req->node); + kfree(req); + } + } +} + +static void haptics_queue_flush(struct qcom_haptics *h) +{ + struct haptics_play_req *req, *tmp; + + guard(spinlock_irqsave)(&h->play_queue_lock); + + list_for_each_entry_safe(req, tmp, &h->play_queue, node) { + list_del(&req->node); + kfree(req); + } +} + +static int haptics_start_direct_play(struct qcom_haptics *h, int effect_id) +{ + struct qcom_haptics_effect *eff = &h->effects[effect_id]; + int err; + + err = haptics_clear_faults(h); + if (err) + return err; + + /* Enable auto-resonance for DIRECT_PLAY mode */ + err = cfg_update_bits(h, HAP_CFG_AUTORES_CFG_REG, + AUTORES_EN_BIT, AUTORES_EN_BIT); + if (err) + return err; + + err = haptics_set_vmax(h, haptics_gain_scaled_vmax(h, h->vmax_mv)); + if (err) + return err; + + err = ptn_write(h, HAP_PTN_DIRECT_PLAY_REG, eff->amplitude); + if (err) + return err; + + err = cfg_write(h, HAP_CFG_SPMI_PLAY_REG, + PLAY_EN_BIT | FIELD_PREP(PAT_SRC_MASK, PAT_SRC_DIRECT_PLAY)); + if (err) + return err; + + return 0; +} + +static int haptics_start_fifo(struct qcom_haptics *h, int effect_id) +{ + struct qcom_haptics_effect *eff = &h->effects[effect_id]; + u32 vmax = eff->vmax_mv ? eff->vmax_mv : h->vmax_mv; + u32 init_len; + bool data_done; + int err; + + if (!eff->fifo_data || !eff->data_len) + return -EINVAL; + + err = haptics_clear_faults(h); + if (err) + return err; + + /* Disable auto-resonance for FIFO mode */ + err = cfg_update_bits(h, HAP_CFG_AUTORES_CFG_REG, AUTORES_EN_BIT, 0); + if (err) + return err; + + err = haptics_set_vmax(h, haptics_gain_scaled_vmax(h, vmax)); + if (err) + return err; + + err = ptn_update_bits(h, HAP_PTN_FIFO_PLAY_RATE_REG, + FIFO_PLAY_RATE_MASK, + FIELD_PREP(FIFO_PLAY_RATE_MASK, eff->play_rate)); + if (err) + return err; + + /* Flush FIFO before loading new data */ + err = ptn_write(h, HAP_PTN_MEM_OP_ACCESS_REG, MEM_FLUSH_RELOAD_BIT); + if (err) + return err; + err = ptn_write(h, HAP_PTN_MEM_OP_ACCESS_REG, 0); + if (err) + return err; + + guard(mutex)(&h->fifo_lock); + + /* Write the initial chunk and initialise streaming state */ + init_len = min_t(u32, eff->data_len, FIFO_INIT_FILL); + err = haptics_write_fifo_chunk(h, eff->fifo_data, init_len); + if (err) + return err; + + h->fifo_data = eff->fifo_data; + h->data_len = eff->data_len; + h->data_written = init_len; + + /* + * Set empty threshold. When threshold > 0 the hardware fires the + * FIFO-empty interrupt when occupancy drops below the threshold, + * allowing the driver to refill. + */ + data_done = (h->data_written >= h->data_len); + if (!data_done) { + err = ptn_write(h, HAP_PTN_FIFO_EMPTY_CFG_REG, + FIFO_EMPTY_THRESH / FIFO_THRESH_LSB); + if (err) { + dev_err(h->dev, "set FIFO empty threshold failed, err=%d\n", err); + h->fifo_data = NULL; + return err; + } + + haptics_fifo_irq_enable(h, true); + } + + err = cfg_write(h, HAP_CFG_SPMI_PLAY_REG, + PLAY_EN_BIT | FIELD_PREP(PAT_SRC_MASK, PAT_SRC_FIFO)); + if (err) { + dev_err(h->dev, "trigger FIFO play failed, err=%d\n", err); + ptn_write(h, HAP_PTN_FIFO_EMPTY_CFG_REG, 0); + haptics_fifo_irq_enable(h, false); + h->fifo_data = NULL; + return err; + } + + return 0; +} + +/* + * haptics_fifo_empty_irq: Threaded IRQ handler for the FIFO-empty interrupt. + * + * While a FIFO play is in progress the hardware fires this interrupt when + * the number of samples in the FIFO drops below the programmed threshold. + * The handler refills the FIFO from the effect's data buffer. When all + * samples have been written the threshold is set to zero. The HW would + * stop the play automatically after all of the samples in FIFO memory are + * played out. + */ +static irqreturn_t haptics_fifo_empty_irq(int irq, void *dev_id) +{ + struct qcom_haptics *h = dev_id; + u32 sts, to_write; + int err; + + err = regmap_read(h->regmap, + h->cfg_base + HAP_CFG_INT_RT_STS_REG, &sts); + if (err || !(sts & FIFO_EMPTY_BIT)) + return IRQ_NONE; + + guard(mutex)(&h->fifo_lock); + + if (!h->fifo_data) + return IRQ_HANDLED; + + /* Refill: write the next chunk */ + to_write = min_t(u32, h->data_len - h->data_written, + h->fifo_len - FIFO_EMPTY_THRESH); + err = haptics_write_fifo_chunk(h, &h->fifo_data[h->data_written], to_write); + if (err) { + dev_err(h->dev, "refill FIFO samples failed, err=%d\n", err); + /* + * If data refilling is failed, clear the FIFO empty threshold + * and disable the IRQ to prevent the FIFO empty IRQ being fired + * continuously. The HW would still play out the data which has + * already been programmed and then stop automatically after that. + */ + ptn_write(h, HAP_PTN_FIFO_EMPTY_CFG_REG, 0); + haptics_fifo_irq_enable(h, false); + return IRQ_HANDLED; + } + + h->data_written += to_write; + + /* Disable the interrupt after all the data is queued */ + if (h->data_written >= h->data_len) + ptn_write(h, HAP_PTN_FIFO_EMPTY_CFG_REG, 0); + + return IRQ_HANDLED; +} + +/* + * haptics_stop: stop play in HW and put runtime PM + * @h: haptics device + * @put_noidle: a flag to put noidle + * + * Stop HW play, clear the FIFO data if the active effect was FIFO-mode, and + * put runtime PM into either noidle or autosuspend based on put_noidle flag. + * + */ +static void haptics_stop(struct qcom_haptics *h, bool put_noidle) +{ + lockdep_assert_held(&h->play_lock); + + cancel_delayed_work(&h->stop_work); + + cfg_write(h, HAP_CFG_SPMI_PLAY_REG, 0); + + if (h->active_mode == HAPTICS_FIFO) { + ptn_write(h, HAP_PTN_FIFO_EMPTY_CFG_REG, 0); + scoped_guard(mutex, &h->fifo_lock) + haptics_fifo_irq_enable(h, false); + + /* + * Wait for an in-flight FIFO-empty IRQ thread to finish before + * clearing fifo_data below, so the handler can't touch it + * after it's freed. + */ + synchronize_irq(h->fifo_empty_irq); + + scoped_guard(mutex, &h->fifo_lock) + h->fifo_data = NULL; + } + + h->active_effect_id = -1; + h->active_mode = HAPTICS_MODE_NONE; + + if (h->pm_ref_held) { + if (put_noidle) + pm_runtime_put_noidle(h->dev); + else + pm_runtime_put_autosuspend(h->dev); + + h->pm_ref_held = false; + } +} + +/* + * haptics_start: start to play an effect + * @h: haptics device + * @effect_id: the index of the effect + * + * If an effect is currently active, stop it 1st. Acquires a PM ref + * if not already held, and then trigger the play based on the + * play mode. Update active_effect_id/active_mode on success. + * + */ +static int haptics_start(struct qcom_haptics *h, int effect_id) +{ + struct qcom_haptics_effect *eff = &h->effects[effect_id]; + unsigned long timeout; + int ret; + + lockdep_assert_held(&h->play_lock); + + if (h->active_effect_id != -1) + haptics_stop(h, false); + + /* Ignore the play if the length is 0 */ + if (eff->length_ms == 0) + return 0; + + if (!h->pm_ref_held) { + ret = pm_runtime_resume_and_get(h->dev); + if (ret < 0) { + dev_err(h->dev, "failed to resume device: %d\n", ret); + return ret; + } + + h->pm_ref_held = true; + } + + switch (h->effects[effect_id].mode) { + case HAPTICS_DIRECT_PLAY: + ret = haptics_start_direct_play(h, effect_id); + break; + case HAPTICS_FIFO: + ret = haptics_start_fifo(h, effect_id); + break; + default: + ret = -EINVAL; + } + + if (ret) { + dev_err(h->dev, "failed to start effect %d: %d\n", effect_id, ret); + if (h->pm_ref_held) { + pm_runtime_put_autosuspend(h->dev); + h->pm_ref_held = false; + } + + return ret; + } + + h->active_effect_id = effect_id; + h->active_mode = eff->mode; + + timeout = msecs_to_jiffies(eff->length_ms); + h->stop_timeline = jiffies + timeout; + mod_delayed_work(system_percpu_wq, &h->stop_work, timeout); + + return 0; +} + +static void haptics_stop_work(struct work_struct *work) +{ + struct qcom_haptics *h = container_of(to_delayed_work(work), + struct qcom_haptics, stop_work); + + guard(mutex)(&h->play_lock); + + if (h->active_effect_id != -1 && h->stop_timeline && + time_after_eq(jiffies, h->stop_timeline)) + haptics_stop(h, false); +} + +static void haptics_play_work(struct work_struct *work) +{ + struct qcom_haptics *h = container_of(to_delayed_work(work), + struct qcom_haptics, play_work); + struct haptics_play_req *req = haptics_dequeue_play_req(h); + int ret; + + if (!req) + return; + + scoped_guard(mutex, &h->play_lock) { + if (req->play) { + ret = haptics_start(h, req->effect_id); + if (ret) + dev_err(h->dev, "play haptics failed, ret=%d\n", ret); + } else if (req->effect_id == h->active_effect_id) { + haptics_stop(h, false); + } + } + + kfree(req); + + /* Handle the remaining requests if the queue is not empty */ + guard(spinlock_irqsave)(&h->play_queue_lock); + if (!list_empty(&h->play_queue)) + schedule_delayed_work(&h->play_work, 0); +} + +static void haptics_clear_effect(struct qcom_haptics *h, + struct qcom_haptics_effect *effect) +{ + guard(mutex)(&h->fifo_lock); + + if (h->fifo_data == effect->fifo_data) + h->fifo_data = NULL; + + kvfree(effect->fifo_data); + effect->fifo_data = NULL; + effect->data_len = 0; + effect->play_rate = 0; + effect->vmax_mv = 0; + effect->length_ms = 0; +} + +/* + * haptics_fifo_length_us: Calculate the play duration of a FIFO effect. + * @h: haptics device pointer + * @rate: FIFO data play rate + * @data_len: FIFO data length + * + * Each FIFO sample is played out over one play-rate period, so the total + * duration is the number of samples times that period: + * + * length_us = (clk_base * data_len * multiplier) / divider + * + * For T_LRA-based rates the period derives from the LRA resonance period + * (h->t_lra_us): DIV_2/4/8 shorten it, X_2/4/8 lengthen it. For the + * kHz-based rates the period is 1000 us / freq_khz. + */ +static u64 haptics_fifo_length_us(struct qcom_haptics *h, + enum qcom_haptics_play_rate rate, + u32 data_len) +{ + u32 clk_base = 1000, multiplier = 1, divider = 1; + + switch (rate) { + case PLAY_RATE_T_LRA: + clk_base = h->t_lra_us; + break; + case PLAY_RATE_T_LRA_DIV_2: + clk_base = h->t_lra_us; + divider = 2; + break; + case PLAY_RATE_T_LRA_DIV_4: + clk_base = h->t_lra_us; + divider = 4; + break; + case PLAY_RATE_T_LRA_DIV_8: + clk_base = h->t_lra_us; + divider = 8; + break; + case PLAY_RATE_T_LRA_X_2: + clk_base = h->t_lra_us; + multiplier = 2; + break; + case PLAY_RATE_T_LRA_X_4: + clk_base = h->t_lra_us; + multiplier = 4; + break; + case PLAY_RATE_T_LRA_X_8: + clk_base = h->t_lra_us; + multiplier = 8; + break; + case PLAY_RATE_F_8KHZ: + divider = 8; + break; + case PLAY_RATE_F_16KHZ: + divider = 16; + break; + case PLAY_RATE_F_24KHZ: + divider = 24; + break; + case PLAY_RATE_F_32KHZ: + divider = 32; + break; + case PLAY_RATE_F_44P1KHZ: + clk_base *= 10; + divider = 441; + break; + case PLAY_RATE_F_48KHZ: + divider = 48; + break; + default: + /* Unexpected rate: fall back to the resonance period. */ + clk_base = h->t_lra_us; + break; + } + + return div_u64((u64)clk_base * data_len * multiplier, divider); +} + +static int haptics_upload_effect(struct input_dev *dev, + struct ff_effect *effect, + struct ff_effect *old) +{ + struct qcom_haptics *h = input_get_drvdata(dev); + struct qcom_haptics_effect *priv; + int id = effect->id; + u32 data_len, level; + u64 length_us; + s8 *fifo; + + guard(mutex)(&h->play_lock); + + if (id < 0 || id >= HAPTICS_MAX_EFFECTS) + return -EINVAL; + + if (id == h->active_effect_id) { + dev_err(h->dev, "effect %d is under playing\n", id); + return -EBUSY; + } + + priv = &h->effects[id]; + + switch (effect->type) { + case FF_CONSTANT: + haptics_clear_effect(h, priv); + level = effect->u.constant.level <= 0 ? 0 : effect->u.constant.level; + priv->amplitude = (u8)mult_frac(level, 255, 0x7FFF); + priv->length_ms = effect->replay.length; + priv->mode = HAPTICS_DIRECT_PLAY; + priv->vmax_mv = h->vmax_mv; + return 0; + + case FF_PERIODIC: { + /* + * FF_RUMBLE effect is converted to FF_PERIODIC/FF_SINE and play + * it using DIRECT_PLAY mode which drives sinusoidal waveforms + */ + if (effect->u.periodic.waveform == FF_SINE) { + haptics_clear_effect(h, priv); + level = effect->u.periodic.magnitude <= 0 ? + 0 : effect->u.periodic.magnitude; + priv->amplitude = (u8)mult_frac(level, 255, 0x7FFF); + priv->length_ms = effect->replay.length; + priv->mode = HAPTICS_DIRECT_PLAY; + priv->vmax_mv = h->vmax_mv; + return 0; + } + + if (effect->u.periodic.waveform != FF_CUSTOM) + return -EINVAL; + /* + * Minimum 3 elements: play-rate code + vmax + at least one sample. + * Limit the maximum data length to ~48K so that it can at least + * handle ~1s vibration at the fast (48K) play rate. + * + * custom_data here is a raw play-rate + sample buffer for direct + * HW FIFO streaming rather than a parameterized waveform, so + * replay.delay, u.periodic.magnitude and the envelope do not + * apply, and the buffer is played back exactly once per + * playback() call (no repeat-count support). + */ + if (effect->u.periodic.custom_len < 3 || + effect->u.periodic.custom_len > CUSTOM_DATA_MAX_LEN + 2) + return -EINVAL; + + s16 *buf __free(kvfree) = vmemdup_array_user(effect->u.periodic.custom_data, + effect->u.periodic.custom_len, + sizeof(s16)); + if (IS_ERR(buf)) + return PTR_ERR(no_free_ptr(buf)); + + if (buf[CUSTOM_DATA_RATE_IDX] < 0 || + buf[CUSTOM_DATA_RATE_IDX] > PLAY_RATE_MAX || + buf[CUSTOM_DATA_RATE_IDX] == PLAY_RATE_RESERVED) + return -EINVAL; + + data_len = effect->u.periodic.custom_len - CUSTOM_DATA_SAMPLE_START; + + fifo = kvmalloc(data_len, GFP_KERNEL); + if (!fifo) + return -ENOMEM; + + /* Pack: one s8 sample per s16 slot (lower byte) */ + for (int i = 0; i < data_len; i++) + fifo[i] = (s8)buf[CUSTOM_DATA_SAMPLE_START + i]; + + haptics_clear_effect(h, priv); + + scoped_guard(mutex, &h->fifo_lock) { + priv->fifo_data = fifo; + priv->data_len = data_len; + } + + priv->play_rate = (u8)buf[CUSTOM_DATA_RATE_IDX]; + priv->vmax_mv = (u32)clamp_val(buf[CUSTOM_DATA_VMAX_IDX], 0, VMAX_MV_MAX); + length_us = haptics_fifo_length_us(h, priv->play_rate, data_len); + priv->length_ms = DIV_ROUND_UP_ULL(length_us, USEC_PER_MSEC); + if (effect->replay.length) + priv->length_ms = min_t(u64, priv->length_ms, effect->replay.length); + + priv->mode = HAPTICS_FIFO; + + return 0; + } + + default: + return -EINVAL; + } +} + +static int haptics_playback(struct input_dev *dev, int effect_id, int val) +{ + struct qcom_haptics *h = input_get_drvdata(dev); + int ret; + + ret = haptics_enqueue_play_req(h, effect_id, val > 0); + if (ret) + return ret; + + schedule_delayed_work(&h->play_work, 0); + + return 0; +} + +static int haptics_erase(struct input_dev *dev, int effect_id) +{ + struct qcom_haptics *h = input_get_drvdata(dev); + struct qcom_haptics_effect *priv = &h->effects[effect_id]; + + guard(mutex)(&h->play_lock); + + haptics_queue_remove_effect(h, effect_id); + + if (h->active_effect_id == effect_id) + haptics_stop(h, false); + + haptics_clear_effect(h, priv); + priv->mode = HAPTICS_MODE_NONE; + + return 0; +} + +static void haptics_gain_work(struct work_struct *work) +{ + struct qcom_haptics *h = container_of(work, struct qcom_haptics, gain_work); + struct qcom_haptics_effect *eff; + int effect_id; + u32 vmax; + + guard(mutex)(&h->play_lock); + + effect_id = h->active_effect_id; + if (effect_id == -1) + return; + + eff = &h->effects[effect_id]; + vmax = eff->vmax_mv ? eff->vmax_mv : h->vmax_mv; + + haptics_set_vmax(h, haptics_gain_scaled_vmax(h, vmax)); +} + +static void haptics_set_gain(struct input_dev *dev, u16 gain) +{ + struct qcom_haptics *h = input_get_drvdata(dev); + + atomic_set(&h->gain, gain); + schedule_work(&h->gain_work); +} + +static void qcom_haptics_close(struct input_dev *input) +{ + struct qcom_haptics *h = input_get_drvdata(input); + + cancel_work_sync(&h->gain_work); + cancel_delayed_work_sync(&h->play_work); + cancel_delayed_work_sync(&h->stop_work); + scoped_guard(mutex, &h->play_lock) { + haptics_queue_flush(h); + haptics_stop(h, false); + } +} + +static void qcom_haptics_cleanup(void *data) +{ + struct qcom_haptics *h = data; + int i; + + cancel_work_sync(&h->gain_work); + cancel_delayed_work_sync(&h->play_work); + cancel_delayed_work_sync(&h->stop_work); + + for (i = 0; i < HAPTICS_MAX_EFFECTS; i++) + haptics_clear_effect(h, &h->effects[i]); + + haptics_enable_module(h, false); +} + +static int qcom_haptics_probe(struct platform_device *pdev) +{ + struct qcom_haptics *h; + struct input_dev *input; + struct ff_device *ff; + u32 regs[2], vmax_uv; + int ret, irq; + + h = devm_kzalloc(&pdev->dev, sizeof(*h), GFP_KERNEL); + if (!h) + return -ENOMEM; + + h->dev = &pdev->dev; + + h->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!h->regmap) + return dev_err_probe(h->dev, -ENODEV, "no regmap from parent\n"); + + ret = device_property_read_u32_array(h->dev, "reg", regs, ARRAY_SIZE(regs)); + if (ret) + return dev_err_probe(h->dev, ret, "failed to read 'reg' property\n"); + + h->cfg_base = regs[0]; + h->ptn_base = regs[1]; + + ret = device_property_read_u32(h->dev, "qcom,lra-period-us", &h->t_lra_us); + if (ret) + return dev_err_probe(h->dev, ret, "missing qcom,lra-period-us\n"); + + h->t_lra_us = clamp(h->t_lra_us, (u32)TLRA_STEP_US, (u32)TLRA_US_MAX); + + ret = device_property_read_u32(h->dev, "qcom,vmax-microvolt", &vmax_uv); + if (ret) + return dev_err_probe(h->dev, ret, "missing qcom,vmax-microvolt\n"); + + h->vmax_mv = clamp(vmax_uv / 1000, (u32)VMAX_STEP_MV, (u32)VMAX_MV_MAX); + + ret = haptics_config_lra_period(h); + if (ret) + return ret; + + ret = haptics_configure_autores(h); + if (ret) + return ret; + + ret = haptics_set_vmax(h, h->vmax_mv); + if (ret) + return ret; + + ret = haptics_configure_fifo_mmap(h); + if (ret) + return ret; + + ret = devm_mutex_init(h->dev, &h->play_lock); + if (ret) + return ret; + + ret = devm_mutex_init(h->dev, &h->fifo_lock); + if (ret) + return ret; + + spin_lock_init(&h->play_queue_lock); + INIT_LIST_HEAD(&h->play_queue); + INIT_DELAYED_WORK(&h->play_work, haptics_play_work); + INIT_DELAYED_WORK(&h->stop_work, haptics_stop_work); + INIT_WORK(&h->gain_work, haptics_gain_work); + atomic_set(&h->gain, 0xFFFF); + h->active_effect_id = -1; + + ret = devm_add_action_or_reset(h->dev, qcom_haptics_cleanup, h); + if (ret) + return ret; + + irq = platform_get_irq_byname(pdev, "fifo-empty"); + if (irq < 0) + return dev_err_probe(h->dev, irq, "failed to get fifo-empty IRQ\n"); + + ret = devm_request_threaded_irq(h->dev, irq, NULL, + haptics_fifo_empty_irq, + IRQF_ONESHOT | IRQF_NO_AUTOEN, + "qcom-haptics-fifo-empty", h); + if (ret) + return dev_err_probe(h->dev, ret, "failed to request fifo-empty IRQ\n"); + + h->fifo_empty_irq = irq; + platform_set_drvdata(pdev, h); + + pm_runtime_use_autosuspend(h->dev); + pm_runtime_set_autosuspend_delay(h->dev, HAPTICS_AUTOSUSPEND_MS); + ret = devm_pm_runtime_enable(h->dev); + if (ret) + return dev_err_probe(h->dev, ret, "enable runtime PM failed\n"); + + input = devm_input_allocate_device(h->dev); + if (!input) + return -ENOMEM; + + input->name = "qcom-spmi-haptics"; + input->id.bustype = BUS_HOST; + input->close = qcom_haptics_close; + input_set_drvdata(input, h); + h->input = input; + + input_set_capability(input, EV_FF, FF_CONSTANT); + input_set_capability(input, EV_FF, FF_PERIODIC); + input_set_capability(input, EV_FF, FF_CUSTOM); + input_set_capability(input, EV_FF, FF_GAIN); + + ret = input_ff_create(input, HAPTICS_MAX_EFFECTS); + if (ret) + return ret; + + ff = input->ff; + ff->upload = haptics_upload_effect; + ff->playback = haptics_playback; + ff->erase = haptics_erase; + ff->set_gain = haptics_set_gain; + + ret = input_register_device(input); + if (ret) + return dev_err_probe(h->dev, ret, "failed to register input device\n"); + + return 0; +} + +static int qcom_haptics_runtime_suspend(struct device *dev) +{ + struct qcom_haptics *h = dev_get_drvdata(dev); + + return haptics_enable_module(h, false); +} + +static int qcom_haptics_runtime_resume(struct device *dev) +{ + struct qcom_haptics *h = dev_get_drvdata(dev); + + return haptics_enable_module(h, true); +} + +static int qcom_haptics_suspend(struct device *dev) +{ + struct qcom_haptics *h = dev_get_drvdata(dev); + int ret; + + cancel_work_sync(&h->gain_work); + disable_delayed_work_sync(&h->play_work); + disable_delayed_work_sync(&h->stop_work); + scoped_guard(mutex, &h->play_lock) { + haptics_queue_flush(h); + haptics_stop(h, true); + } + + ret = pm_runtime_force_suspend(dev); + if (ret) { + enable_delayed_work(&h->play_work); + enable_delayed_work(&h->stop_work); + } + + return ret; +} + +static int qcom_haptics_resume(struct device *dev) +{ + struct qcom_haptics *h = dev_get_drvdata(dev); + + enable_delayed_work(&h->play_work); + enable_delayed_work(&h->stop_work); + + return pm_runtime_force_resume(dev); +} + +static const struct dev_pm_ops qcom_haptics_pm_ops = { + SYSTEM_SLEEP_PM_OPS(qcom_haptics_suspend, qcom_haptics_resume) + RUNTIME_PM_OPS(qcom_haptics_runtime_suspend, qcom_haptics_runtime_resume, + NULL) +}; + +static const struct of_device_id qcom_haptics_of_match[] = { + { .compatible = "qcom,spmi-haptics" }, + { } +}; +MODULE_DEVICE_TABLE(of, qcom_haptics_of_match); + +static struct platform_driver qcom_haptics_driver = { + .probe = qcom_haptics_probe, + .driver = { + .name = "qcom-spmi-haptics", + .of_match_table = qcom_haptics_of_match, + .pm = pm_ptr(&qcom_haptics_pm_ops), + }, +}; +module_platform_driver(qcom_haptics_driver); + +MODULE_DESCRIPTION("Qualcomm SPMI PMIC Haptics driver"); +MODULE_LICENSE("GPL"); -- 2.43.0