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[94.179.40.15]) by smtp.gmail.com with ESMTPSA id j4sm1080509wrt.67.2021.09.15.13.43.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Sep 2021 13:43:05 -0700 (PDT) From: Denis Pauk Cc: pauk.denis@gmail.com, Bernhard Seibold , Andy Shevchenko , Guenter Roeck , Jean Delvare , linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 1/3] hwmon: (nct6775) Use superio_*() function pointers in sio_data. Date: Wed, 15 Sep 2021 23:42:49 +0300 Message-Id: <20210915204251.26081-2-pauk.denis@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210915204251.26081-1-pauk.denis@gmail.com> References: <20210915204251.26081-1-pauk.denis@gmail.com> MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Prepare for platform specific callbacks usage: * Rearrange code for directly use struct nct6775_sio_data in superio_*() functions. * Use superio function pointers in nct6775_sio_data struct instead direct calls. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204807 Signed-off-by: Denis Pauk Co-developed-by: Bernhard Seibold Signed-off-by: Bernhard Seibold Cc: Andy Shevchenko Cc: Guenter Roeck --- Changes in v6: - Split patch with replace direct calls to function pointers. Changes in v5: - Without changes. Changes in v4: - Fix naming conflict with inb, outb by add sio prefix to callbacks in nct6775_sio_data. Changes in v3: - Use nct6775 function pointers in struct nct6775_data instead direct calls. - make function declarations one line. Changes in v2: - Split changes to separate patches. - Rearrange code for directly use struct nct6775_sio_data in superio_*() functions. --- drivers/hwmon/nct6775.c | 189 ++++++++++++++++++++++------------------ 1 file changed, 104 insertions(+), 85 deletions(-) diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c index 5bd15622a85f..9b503c88e20d 100644 --- a/drivers/hwmon/nct6775.c +++ b/drivers/hwmon/nct6775.c @@ -133,30 +133,46 @@ MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal"); enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 }; -static inline void -superio_outb(int ioreg, int reg, int val) +struct nct6775_sio_data { + int sioreg; + enum kinds kind; + + /* superio_() callbacks */ + void (*sio_outb)(struct nct6775_sio_data *sio_data, int reg, int val); + int (*sio_inb)(struct nct6775_sio_data *sio_data, int reg); + void (*sio_select)(struct nct6775_sio_data *sio_data, int ld); + int (*sio_enter)(struct nct6775_sio_data *sio_data); + void (*sio_exit)(struct nct6775_sio_data *sio_data); +}; + +static void superio_outb(struct nct6775_sio_data *sio_data, int reg, int val) { + int ioreg = sio_data->sioreg; + outb(reg, ioreg); outb(val, ioreg + 1); } -static inline int -superio_inb(int ioreg, int reg) +static int superio_inb(struct nct6775_sio_data *sio_data, int reg) { + int ioreg = sio_data->sioreg; + outb(reg, ioreg); return inb(ioreg + 1); } -static inline void -superio_select(int ioreg, int ld) +static void superio_select(struct nct6775_sio_data *sio_data, int ld) { + int ioreg = sio_data->sioreg; + outb(SIO_REG_LDSEL, ioreg); outb(ld, ioreg + 1); } -static inline int -superio_enter(int ioreg) +static int superio_enter(struct nct6775_sio_data *sio_data) { + int ioreg = sio_data->sioreg; + /* * Try to reserve and for exclusive access. */ @@ -169,9 +185,10 @@ superio_enter(int ioreg) return 0; } -static inline void -superio_exit(int ioreg) +static void superio_exit(struct nct6775_sio_data *sio_data) { + int ioreg = sio_data->sioreg; + outb(0xaa, ioreg); outb(0x02, ioreg); outb(0x02, ioreg + 1); @@ -1217,11 +1234,6 @@ struct nct6775_data { u8 sio_reg_enable; }; -struct nct6775_sio_data { - int sioreg; - enum kinds kind; -}; - struct sensor_device_template { struct device_attribute dev_attr; union { @@ -3410,6 +3422,7 @@ clear_caseopen(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct nct6775_data *data = dev_get_drvdata(dev); + struct nct6775_sio_data *sio_data = dev_get_platdata(dev); int nr = to_sensor_dev_attr(attr)->index - INTRUSION_ALARM_BASE; unsigned long val; u8 reg; @@ -3425,19 +3438,19 @@ clear_caseopen(struct device *dev, struct device_attribute *attr, * The CR registers are the same for all chips, and not all chips * support clearing the caseopen status through "regular" registers. */ - ret = superio_enter(data->sioreg); + ret = sio_data->sio_enter(sio_data); if (ret) { count = ret; goto error; } - superio_select(data->sioreg, NCT6775_LD_ACPI); - reg = superio_inb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr]); + sio_data->sio_select(sio_data, NCT6775_LD_ACPI); + reg = sio_data->sio_inb(sio_data, NCT6775_REG_CR_CASEOPEN_CLR[nr]); reg |= NCT6775_CR_CASEOPEN_CLR_MASK[nr]; - superio_outb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg); + sio_data->sio_outb(sio_data, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg); reg &= ~NCT6775_CR_CASEOPEN_CLR_MASK[nr]; - superio_outb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg); - superio_exit(data->sioreg); + sio_data->sio_outb(sio_data, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg); + sio_data->sio_exit(sio_data); data->valid = false; /* Force cache refresh */ error: @@ -3542,29 +3555,28 @@ static inline void nct6775_init_device(struct nct6775_data *data) } static void -nct6775_check_fan_inputs(struct nct6775_data *data) +nct6775_check_fan_inputs(struct nct6775_data *data, struct nct6775_sio_data *sio_data) { bool fan3pin = false, fan4pin = false, fan4min = false; bool fan5pin = false, fan6pin = false, fan7pin = false; bool pwm3pin = false, pwm4pin = false, pwm5pin = false; bool pwm6pin = false, pwm7pin = false; - int sioreg = data->sioreg; /* Store SIO_REG_ENABLE for use during resume */ - superio_select(sioreg, NCT6775_LD_HWM); - data->sio_reg_enable = superio_inb(sioreg, SIO_REG_ENABLE); + sio_data->sio_select(sio_data, NCT6775_LD_HWM); + data->sio_reg_enable = sio_data->sio_inb(sio_data, SIO_REG_ENABLE); /* fan4 and fan5 share some pins with the GPIO and serial flash */ if (data->kind == nct6775) { - int cr2c = superio_inb(sioreg, 0x2c); + int cr2c = sio_data->sio_inb(sio_data, 0x2c); fan3pin = cr2c & BIT(6); pwm3pin = cr2c & BIT(7); /* On NCT6775, fan4 shares pins with the fdc interface */ - fan4pin = !(superio_inb(sioreg, 0x2A) & 0x80); + fan4pin = !(sio_data->sio_inb(sio_data, 0x2A) & 0x80); } else if (data->kind == nct6776) { - bool gpok = superio_inb(sioreg, 0x27) & 0x80; + bool gpok = sio_data->sio_inb(sio_data, 0x27) & 0x80; const char *board_vendor, *board_name; board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); @@ -3580,7 +3592,7 @@ nct6775_check_fan_inputs(struct nct6775_data *data) if (!strcmp(board_name, "Z77 Pro4-M")) { if ((data->sio_reg_enable & 0xe0) != 0xe0) { data->sio_reg_enable |= 0xe0; - superio_outb(sioreg, SIO_REG_ENABLE, + sio_data->sio_outb(sio_data, SIO_REG_ENABLE, data->sio_reg_enable); } } @@ -3589,32 +3601,32 @@ nct6775_check_fan_inputs(struct nct6775_data *data) if (data->sio_reg_enable & 0x80) fan3pin = gpok; else - fan3pin = !(superio_inb(sioreg, 0x24) & 0x40); + fan3pin = !(sio_data->sio_inb(sio_data, 0x24) & 0x40); if (data->sio_reg_enable & 0x40) fan4pin = gpok; else - fan4pin = superio_inb(sioreg, 0x1C) & 0x01; + fan4pin = sio_data->sio_inb(sio_data, 0x1C) & 0x01; if (data->sio_reg_enable & 0x20) fan5pin = gpok; else - fan5pin = superio_inb(sioreg, 0x1C) & 0x02; + fan5pin = sio_data->sio_inb(sio_data, 0x1C) & 0x02; fan4min = fan4pin; pwm3pin = fan3pin; } else if (data->kind == nct6106) { - int cr24 = superio_inb(sioreg, 0x24); + int cr24 = sio_data->sio_inb(sio_data, 0x24); fan3pin = !(cr24 & 0x80); pwm3pin = cr24 & 0x08; } else if (data->kind == nct6116) { - int cr1a = superio_inb(sioreg, 0x1a); - int cr1b = superio_inb(sioreg, 0x1b); - int cr24 = superio_inb(sioreg, 0x24); - int cr2a = superio_inb(sioreg, 0x2a); - int cr2b = superio_inb(sioreg, 0x2b); - int cr2f = superio_inb(sioreg, 0x2f); + int cr1a = sio_data->sio_inb(sio_data, 0x1a); + int cr1b = sio_data->sio_inb(sio_data, 0x1b); + int cr24 = sio_data->sio_inb(sio_data, 0x24); + int cr2a = sio_data->sio_inb(sio_data, 0x2a); + int cr2b = sio_data->sio_inb(sio_data, 0x2b); + int cr2f = sio_data->sio_inb(sio_data, 0x2f); fan3pin = !(cr2b & 0x10); fan4pin = (cr2b & 0x80) || // pin 1(2) @@ -3630,24 +3642,24 @@ nct6775_check_fan_inputs(struct nct6775_data *data) * NCT6779D, NCT6791D, NCT6792D, NCT6793D, NCT6795D, NCT6796D, * NCT6797D, NCT6798D */ - int cr1a = superio_inb(sioreg, 0x1a); - int cr1b = superio_inb(sioreg, 0x1b); - int cr1c = superio_inb(sioreg, 0x1c); - int cr1d = superio_inb(sioreg, 0x1d); - int cr2a = superio_inb(sioreg, 0x2a); - int cr2b = superio_inb(sioreg, 0x2b); - int cr2d = superio_inb(sioreg, 0x2d); - int cr2f = superio_inb(sioreg, 0x2f); + int cr1a = sio_data->sio_inb(sio_data, 0x1a); + int cr1b = sio_data->sio_inb(sio_data, 0x1b); + int cr1c = sio_data->sio_inb(sio_data, 0x1c); + int cr1d = sio_data->sio_inb(sio_data, 0x1d); + int cr2a = sio_data->sio_inb(sio_data, 0x2a); + int cr2b = sio_data->sio_inb(sio_data, 0x2b); + int cr2d = sio_data->sio_inb(sio_data, 0x2d); + int cr2f = sio_data->sio_inb(sio_data, 0x2f); bool dsw_en = cr2f & BIT(3); bool ddr4_en = cr2f & BIT(4); int cre0; int creb; int cred; - superio_select(sioreg, NCT6775_LD_12); - cre0 = superio_inb(sioreg, 0xe0); - creb = superio_inb(sioreg, 0xeb); - cred = superio_inb(sioreg, 0xed); + sio_data->sio_select(sio_data, NCT6775_LD_12); + cre0 = sio_data->sio_inb(sio_data, 0xe0); + creb = sio_data->sio_inb(sio_data, 0xeb); + cred = sio_data->sio_inb(sio_data, 0xed); fan3pin = !(cr1c & BIT(5)); fan4pin = !(cr1c & BIT(6)); @@ -4502,11 +4514,11 @@ static int nct6775_probe(struct platform_device *pdev) /* Initialize the chip */ nct6775_init_device(data); - err = superio_enter(sio_data->sioreg); + err = sio_data->sio_enter(sio_data); if (err) return err; - cr2a = superio_inb(sio_data->sioreg, 0x2a); + cr2a = sio_data->sio_inb(sio_data, 0x2a); switch (data->kind) { case nct6775: data->have_vid = (cr2a & 0x40); @@ -4532,17 +4544,17 @@ static int nct6775_probe(struct platform_device *pdev) * We can get the VID input values directly at logical device D 0xe3. */ if (data->have_vid) { - superio_select(sio_data->sioreg, NCT6775_LD_VID); - data->vid = superio_inb(sio_data->sioreg, 0xe3); + sio_data->sio_select(sio_data, NCT6775_LD_VID); + data->vid = sio_data->sio_inb(sio_data, 0xe3); data->vrm = vid_which_vrm(); } if (fan_debounce) { u8 tmp; - superio_select(sio_data->sioreg, NCT6775_LD_HWM); - tmp = superio_inb(sio_data->sioreg, - NCT6775_REG_CR_FAN_DEBOUNCE); + sio_data->sio_select(sio_data, NCT6775_LD_HWM); + tmp = sio_data->sio_inb(sio_data, + NCT6775_REG_CR_FAN_DEBOUNCE); switch (data->kind) { case nct6106: case nct6116: @@ -4565,15 +4577,15 @@ static int nct6775_probe(struct platform_device *pdev) tmp |= 0x7e; break; } - superio_outb(sio_data->sioreg, NCT6775_REG_CR_FAN_DEBOUNCE, + sio_data->sio_outb(sio_data, NCT6775_REG_CR_FAN_DEBOUNCE, tmp); dev_info(&pdev->dev, "Enabled fan debounce for chip %s\n", data->name); } - nct6775_check_fan_inputs(data); + nct6775_check_fan_inputs(data, sio_data); - superio_exit(sio_data->sioreg); + sio_data->sio_exit(sio_data); /* Read fan clock dividers immediately */ nct6775_init_fan_common(dev, data); @@ -4613,15 +4625,15 @@ static int nct6775_probe(struct platform_device *pdev) return PTR_ERR_OR_ZERO(hwmon_dev); } -static void nct6791_enable_io_mapping(int sioaddr) +static void nct6791_enable_io_mapping(struct nct6775_sio_data *sio_data) { int val; - val = superio_inb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE); + val = sio_data->sio_inb(sio_data, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE); if (val & 0x10) { pr_info("Enabling hardware monitor logical device mappings.\n"); - superio_outb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE, - val & ~0x10); + sio_data->sio_outb(sio_data, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE, + val & ~0x10); } } @@ -4643,29 +4655,29 @@ static int __maybe_unused nct6775_suspend(struct device *dev) static int __maybe_unused nct6775_resume(struct device *dev) { struct nct6775_data *data = dev_get_drvdata(dev); - int sioreg = data->sioreg; + struct nct6775_sio_data *sio_data = dev_get_platdata(dev); int i, j, err = 0; u8 reg; mutex_lock(&data->update_lock); data->bank = 0xff; /* Force initial bank selection */ - err = superio_enter(sioreg); + err = sio_data->sio_enter(sio_data); if (err) goto abort; - superio_select(sioreg, NCT6775_LD_HWM); - reg = superio_inb(sioreg, SIO_REG_ENABLE); + sio_data->sio_select(sio_data, NCT6775_LD_HWM); + reg = sio_data->sio_inb(sio_data, SIO_REG_ENABLE); if (reg != data->sio_reg_enable) - superio_outb(sioreg, SIO_REG_ENABLE, data->sio_reg_enable); + sio_data->sio_outb(sio_data, SIO_REG_ENABLE, data->sio_reg_enable); if (data->kind == nct6791 || data->kind == nct6792 || data->kind == nct6793 || data->kind == nct6795 || data->kind == nct6796 || data->kind == nct6797 || data->kind == nct6798) - nct6791_enable_io_mapping(sioreg); + nct6791_enable_io_mapping(sio_data); - superio_exit(sioreg); + sio_data->sio_exit(sio_data); /* Restore limits */ for (i = 0; i < data->in_num; i++) { @@ -4728,12 +4740,14 @@ static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data) int err; int addr; - err = superio_enter(sioaddr); + sio_data->sioreg = sioaddr; + + err = sio_data->sio_enter(sio_data); if (err) return err; - val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8) | - superio_inb(sioaddr, SIO_REG_DEVID + 1); + val = (sio_data->sio_inb(sio_data, SIO_REG_DEVID) << 8) | + sio_data->sio_inb(sio_data, SIO_REG_DEVID + 1); if (force_id && val != 0xffff) val = force_id; @@ -4777,38 +4791,37 @@ static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data) default: if (val != 0xffff) pr_debug("unsupported chip ID: 0x%04x\n", val); - superio_exit(sioaddr); + sio_data->sio_exit(sio_data); return -ENODEV; } /* We have a known chip, find the HWM I/O address */ - superio_select(sioaddr, NCT6775_LD_HWM); - val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8) - | superio_inb(sioaddr, SIO_REG_ADDR + 1); + sio_data->sio_select(sio_data, NCT6775_LD_HWM); + val = (sio_data->sio_inb(sio_data, SIO_REG_ADDR) << 8) + | sio_data->sio_inb(sio_data, SIO_REG_ADDR + 1); addr = val & IOREGION_ALIGNMENT; if (addr == 0) { pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n"); - superio_exit(sioaddr); + sio_data->sio_exit(sio_data); return -ENODEV; } /* Activate logical device if needed */ - val = superio_inb(sioaddr, SIO_REG_ENABLE); + val = sio_data->sio_inb(sio_data, SIO_REG_ENABLE); if (!(val & 0x01)) { pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n"); - superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01); + sio_data->sio_outb(sio_data, SIO_REG_ENABLE, val | 0x01); } if (sio_data->kind == nct6791 || sio_data->kind == nct6792 || sio_data->kind == nct6793 || sio_data->kind == nct6795 || sio_data->kind == nct6796 || sio_data->kind == nct6797 || sio_data->kind == nct6798) - nct6791_enable_io_mapping(sioaddr); + nct6791_enable_io_mapping(sio_data); - superio_exit(sioaddr); + sio_data->sio_exit(sio_data); pr_info("Found %s or compatible chip at %#x:%#x\n", nct6775_sio_names[sio_data->kind], sioaddr, addr); - sio_data->sioreg = sioaddr; return addr; } @@ -4842,6 +4855,12 @@ static int __init sensors_nct6775_init(void) * nct6775 hardware monitor, and call probe() */ for (i = 0; i < ARRAY_SIZE(pdev); i++) { + sio_data.sio_outb = superio_outb; + sio_data.sio_inb = superio_inb; + sio_data.sio_select = superio_select; + sio_data.sio_enter = superio_enter; + sio_data.sio_exit = superio_exit; + address = nct6775_find(sioaddr[i], &sio_data); if (address <= 0) continue;