| Message ID | 1459373895-17704-3-git-send-email-christophe-h.ricard@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Mar 30, 2016 at 11:38:11PM +0200, Christophe Ricard wrote: > Dropped the field 'irq' from struct tpm_vendor_specific and make it > available to the various private structures in the drivers using irqs. > > A dedicated flag TPM_CHIP_FLAG_IRQ is added for the upper layers. > > In st33zp24, struct st33zp24_dev declaration is moved to st33zp24.h in > order to make accessible irq from other phy's(i2c, spi). > > In tpm_i2c_nuvoton, chip->vendor.priv is not directly allocated. We can > access irq field from priv_data in a cleaner way. > > Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> LGTM Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> /Jarkko > --- > drivers/char/tpm/st33zp24/st33zp24.c | 23 ++++++++--------------- > drivers/char/tpm/st33zp24/st33zp24.h | 10 ++++++++++ > drivers/char/tpm/tpm-interface.c | 4 ++-- > drivers/char/tpm/tpm.h | 3 +-- > drivers/char/tpm/tpm_i2c_atmel.c | 1 - > drivers/char/tpm/tpm_i2c_infineon.c | 3 --- > drivers/char/tpm/tpm_i2c_nuvoton.c | 28 ++++++++++++++++------------ > drivers/char/tpm/tpm_tis.c | 30 +++++++++++++++++------------- > drivers/char/tpm/xen-tpmfront.c | 7 ++++--- > 9 files changed, 58 insertions(+), 51 deletions(-) > > diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c > index 9e91ca7..f4a44ad 100644 > --- a/drivers/char/tpm/st33zp24/st33zp24.c > +++ b/drivers/char/tpm/st33zp24/st33zp24.c > @@ -73,14 +73,6 @@ enum tis_defaults { > TIS_LONG_TIMEOUT = 2000, > }; > > -struct st33zp24_dev { > - struct tpm_chip *chip; > - void *phy_id; > - const struct st33zp24_phy_ops *ops; > - u32 intrs; > - int io_lpcpd; > -}; > - > /* > * clear_interruption clear the pending interrupt. > * @param: tpm_dev, the tpm device device. > @@ -288,10 +280,10 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, > > stop = jiffies + timeout; > > - if (chip->vendor.irq) { > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > cur_intrs = tpm_dev->intrs; > clear_interruption(tpm_dev); > - enable_irq(chip->vendor.irq); > + enable_irq(tpm_dev->irq); > > do { > if (ret == -ERESTARTSYS && freezing(current)) > @@ -314,7 +306,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, > } > } while (ret == -ERESTARTSYS && freezing(current)); > > - disable_irq_nosync(chip->vendor.irq); > + disable_irq_nosync(tpm_dev->irq); > > } else { > do { > @@ -376,7 +368,7 @@ static irqreturn_t tpm_ioserirq_handler(int irq, void *dev_id) > > tpm_dev->intrs++; > wake_up_interruptible(&chip->vendor.read_queue); > - disable_irq_nosync(chip->vendor.irq); > + disable_irq_nosync(tpm_dev->irq); > > return IRQ_HANDLED; > } /* tpm_ioserirq_handler() */ > @@ -456,7 +448,7 @@ static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf, > if (ret < 0) > goto out_err; > > - if (chip->vendor.irq) { > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); > > ret = wait_for_stat(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID, > @@ -611,9 +603,10 @@ int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops, > if (ret < 0) > goto _tpm_clean_answer; > > - chip->vendor.irq = irq; > + tpm_dev->irq = irq; > + chip->flags |= TPM_CHIP_FLAG_IRQ; > > - disable_irq_nosync(chip->vendor.irq); > + disable_irq_nosync(tpm_dev->irq); > > tpm_gen_interrupt(chip); > } > diff --git a/drivers/char/tpm/st33zp24/st33zp24.h b/drivers/char/tpm/st33zp24/st33zp24.h > index bcbd5ff..27e7564 100644 > --- a/drivers/char/tpm/st33zp24/st33zp24.h > +++ b/drivers/char/tpm/st33zp24/st33zp24.h > @@ -21,6 +21,16 @@ > #define TPM_WRITE_DIRECTION 0x80 > #define TPM_BUFSIZE 2048 > > +struct st33zp24_dev { > + struct tpm_chip *chip; > + void *phy_id; > + const struct st33zp24_phy_ops *ops; > + int irq; > + u32 intrs; > + int io_lpcpd; > +}; > + > + > struct st33zp24_phy_ops { > int (*send)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size); > int (*recv)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size); > diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c > index 5397b64..101bb47 100644 > --- a/drivers/char/tpm/tpm-interface.c > +++ b/drivers/char/tpm/tpm-interface.c > @@ -359,7 +359,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, > goto out; > } > > - if (chip->vendor.irq) > + if (chip->flags & TPM_CHIP_FLAG_IRQ) > goto out_recv; > > if (chip->flags & TPM_CHIP_FLAG_TPM2) > @@ -890,7 +890,7 @@ int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, > > stop = jiffies + timeout; > > - if (chip->vendor.irq) { > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > again: > timeout = stop - jiffies; > if ((long)timeout <= 0) > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h > index 357ac14..ad4799c 100644 > --- a/drivers/char/tpm/tpm.h > +++ b/drivers/char/tpm/tpm.h > @@ -131,8 +131,6 @@ enum tpm2_startup_types { > struct tpm_chip; > > struct tpm_vendor_specific { > - int irq; > - > int locality; > unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */ > bool timeout_adjusted; > @@ -154,6 +152,7 @@ struct tpm_vendor_specific { > enum tpm_chip_flags { > TPM_CHIP_FLAG_REGISTERED = BIT(0), > TPM_CHIP_FLAG_TPM2 = BIT(1), > + TPM_CHIP_FLAG_IRQ = BIT(2), > }; > > struct tpm_chip { > diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c > index dd8f0eb..55fa51f 100644 > --- a/drivers/char/tpm/tpm_i2c_atmel.c > +++ b/drivers/char/tpm/tpm_i2c_atmel.c > @@ -173,7 +173,6 @@ static int i2c_atmel_probe(struct i2c_client *client, > chip->vendor.timeout_b = msecs_to_jiffies(TPM_I2C_LONG_TIMEOUT); > chip->vendor.timeout_c = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT); > chip->vendor.timeout_d = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT); > - chip->vendor.irq = 0; > > /* There is no known way to probe for this device, and all version > * information seems to be read via TPM commands. Thus we rely on the > diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c > index e74f1c1..093daf9 100644 > --- a/drivers/char/tpm/tpm_i2c_infineon.c > +++ b/drivers/char/tpm/tpm_i2c_infineon.c > @@ -585,9 +585,6 @@ static int tpm_tis_i2c_init(struct device *dev) > if (IS_ERR(chip)) > return PTR_ERR(chip); > > - /* Disable interrupts */ > - chip->vendor.irq = 0; > - > /* Default timeouts */ > chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT); > chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT); > diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c > index a43b5f3..75a80e466 100644 > --- a/drivers/char/tpm/tpm_i2c_nuvoton.c > +++ b/drivers/char/tpm/tpm_i2c_nuvoton.c > @@ -55,6 +55,7 @@ > #define I2C_DRIVER_NAME "tpm_i2c_nuvoton" > > struct priv_data { > + int irq; > unsigned int intrs; > }; > > @@ -176,12 +177,12 @@ static bool i2c_nuvoton_check_status(struct tpm_chip *chip, u8 mask, u8 value) > static int i2c_nuvoton_wait_for_stat(struct tpm_chip *chip, u8 mask, u8 value, > u32 timeout, wait_queue_head_t *queue) > { > - if (chip->vendor.irq && queue) { > + if ((chip->flags & TPM_CHIP_FLAG_IRQ) && queue) { > s32 rc; > struct priv_data *priv = chip->vendor.priv; > unsigned int cur_intrs = priv->intrs; > > - enable_irq(chip->vendor.irq); > + enable_irq(priv->irq); > rc = wait_event_interruptible_timeout(*queue, > cur_intrs != priv->intrs, > timeout); > @@ -477,7 +478,7 @@ static irqreturn_t i2c_nuvoton_int_handler(int dummy, void *dev_id) > > priv->intrs++; > wake_up(&chip->vendor.read_queue); > - disable_irq_nosync(chip->vendor.irq); > + disable_irq_nosync(priv->irq); > return IRQ_HANDLED; > } > > @@ -521,6 +522,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client, > int rc; > struct tpm_chip *chip; > struct device *dev = &client->dev; > + struct priv_data *priv; > u32 vid = 0; > > rc = get_vid(client, &vid); > @@ -534,10 +536,10 @@ static int i2c_nuvoton_probe(struct i2c_client *client, > if (IS_ERR(chip)) > return PTR_ERR(chip); > > - chip->vendor.priv = devm_kzalloc(dev, sizeof(struct priv_data), > - GFP_KERNEL); > - if (!chip->vendor.priv) > + priv = devm_kzalloc(dev, sizeof(struct priv_data), GFP_KERNEL); > + if (!priv) > return -ENOMEM; > + chip->vendor.priv = priv; > > init_waitqueue_head(&chip->vendor.read_queue); > > @@ -552,19 +554,21 @@ static int i2c_nuvoton_probe(struct i2c_client *client, > * TPM_INTF_INT_LEVEL_LOW | TPM_INTF_DATA_AVAIL_INT > * The IRQ should be set in the i2c_board_info (which is done > * automatically in of_i2c_register_devices, for device tree users */ > - chip->vendor.irq = client->irq; > + chip->flags |= TPM_CHIP_FLAG_IRQ; > + priv->irq = client->irq; > > - if (chip->vendor.irq) { > - dev_dbg(dev, "%s() chip-vendor.irq\n", __func__); > - rc = devm_request_irq(dev, chip->vendor.irq, > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > + dev_dbg(dev, "%s() priv->irq\n", __func__); > + rc = devm_request_irq(dev, client->irq, > i2c_nuvoton_int_handler, > IRQF_TRIGGER_LOW, > dev_name(&chip->dev), > chip); > if (rc) { > dev_err(dev, "%s() Unable to request irq: %d for use\n", > - __func__, chip->vendor.irq); > - chip->vendor.irq = 0; > + __func__, priv->irq); > + chip->flags &= ~TPM_CHIP_FLAG_IRQ; > + priv->irq = 0; > } else { > /* Clear any pending interrupt */ > i2c_nuvoton_ready(chip); > diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c > index 19dac62..b8bb502 100644 > --- a/drivers/char/tpm/tpm_tis.c > +++ b/drivers/char/tpm/tpm_tis.c > @@ -96,6 +96,7 @@ struct tpm_info { > struct priv_data { > void __iomem *iobase; > u16 manufacturer_id; > + int irq; > bool irq_tested; > wait_queue_head_t int_queue; > }; > @@ -177,7 +178,7 @@ static int request_locality(struct tpm_chip *chip, int l) > > stop = jiffies + chip->vendor.timeout_a; > > - if (chip->vendor.irq) { > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > again: > timeout = stop - jiffies; > if ((long)timeout <= 0) > @@ -385,8 +386,9 @@ static void disable_interrupts(struct tpm_chip *chip) > intmask &= ~TPM_GLOBAL_INT_ENABLE; > iowrite32(intmask, > priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); > - devm_free_irq(&chip->dev, chip->vendor.irq, chip); > - chip->vendor.irq = 0; > + devm_free_irq(&chip->dev, priv->irq, chip); > + priv->irq = 0; > + chip->flags &= ~TPM_CHIP_FLAG_IRQ; > } > > /* > @@ -409,7 +411,7 @@ static int tpm_tis_send_main(struct tpm_chip *chip, u8 *buf, size_t len) > iowrite8(TPM_STS_GO, > priv->iobase + TPM_STS(chip->vendor.locality)); > > - if (chip->vendor.irq) { > + if (chip->flags & TPM_CHIP_FLAG_IRQ) { > ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); > > if (chip->flags & TPM_CHIP_FLAG_TPM2) > @@ -436,14 +438,16 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len) > int rc, irq; > struct priv_data *priv = chip->vendor.priv; > > - if (!chip->vendor.irq || priv->irq_tested) > + if (!(chip->flags & TPM_CHIP_FLAG_IRQ) || priv->irq_tested) > return tpm_tis_send_main(chip, buf, len); > > /* Verify receipt of the expected IRQ */ > - irq = chip->vendor.irq; > - chip->vendor.irq = 0; > + irq = priv->irq; > + priv->irq = 0; > + chip->flags &= ~TPM_CHIP_FLAG_IRQ; > rc = tpm_tis_send_main(chip, buf, len); > - chip->vendor.irq = irq; > + priv->irq = irq; > + chip->flags |= TPM_CHIP_FLAG_IRQ; > if (!priv->irq_tested) > msleep(1); > if (!priv->irq_tested) > @@ -605,7 +609,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, > irq); > return -1; > } > - chip->vendor.irq = irq; > + priv->irq = irq; > > original_int_vec = ioread8(priv->iobase + > TPM_INT_VECTOR(chip->vendor.locality)); > @@ -634,7 +638,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, > /* tpm_tis_send will either confirm the interrupt is working or it > * will call disable_irq which undoes all of the above. > */ > - if (!chip->vendor.irq) { > + if (!(chip->flags & TPM_CHIP_FLAG_IRQ)) { > iowrite8(original_int_vec, > priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); > return 1; > @@ -802,7 +806,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info, > if (tpm_info->irq) { > tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, > tpm_info->irq); > - if (!chip->vendor.irq) > + if (!(chip->flags & TPM_CHIP_FLAG_IRQ)) > dev_err(&chip->dev, FW_BUG > "TPM interrupt not working, polling instead\n"); > } else > @@ -846,7 +850,7 @@ static void tpm_tis_reenable_interrupts(struct tpm_chip *chip) > > /* reenable interrupts that device may have lost or > BIOS/firmware may have disabled */ > - iowrite8(chip->vendor.irq, priv->iobase + > + iowrite8(priv->irq, priv->iobase + > TPM_INT_VECTOR(chip->vendor.locality)); > > intmask = > @@ -865,7 +869,7 @@ static int tpm_tis_resume(struct device *dev) > struct tpm_chip *chip = dev_get_drvdata(dev); > int ret; > > - if (chip->vendor.irq) > + if (chip->flags & TPM_CHIP_FLAG_IRQ) > tpm_tis_reenable_interrupts(chip); > > ret = tpm_pm_resume(dev); > diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c > index 3111f27..329941d 100644 > --- a/drivers/char/tpm/xen-tpmfront.c > +++ b/drivers/char/tpm/xen-tpmfront.c > @@ -28,6 +28,7 @@ struct tpm_private { > unsigned int evtchn; > int ring_ref; > domid_t backend_id; > + int irq; > }; > > enum status_bits { > @@ -217,7 +218,7 @@ static int setup_ring(struct xenbus_device *dev, struct tpm_private *priv) > xenbus_dev_fatal(dev, rv, "allocating TPM irq"); > return rv; > } > - priv->chip->vendor.irq = rv; > + priv->irq = rv; > > again: > rv = xenbus_transaction_start(&xbt); > @@ -277,8 +278,8 @@ static void ring_free(struct tpm_private *priv) > else > free_page((unsigned long)priv->shr); > > - if (priv->chip && priv->chip->vendor.irq) > - unbind_from_irqhandler(priv->chip->vendor.irq, priv); > + if (priv->irq) > + unbind_from_irqhandler(priv->irq, priv); > > kfree(priv); > } > -- > 2.5.0 > ------------------------------------------------------------------------------ Transform Data into Opportunity. 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diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c index 9e91ca7..f4a44ad 100644 --- a/drivers/char/tpm/st33zp24/st33zp24.c +++ b/drivers/char/tpm/st33zp24/st33zp24.c @@ -73,14 +73,6 @@ enum tis_defaults { TIS_LONG_TIMEOUT = 2000, }; -struct st33zp24_dev { - struct tpm_chip *chip; - void *phy_id; - const struct st33zp24_phy_ops *ops; - u32 intrs; - int io_lpcpd; -}; - /* * clear_interruption clear the pending interrupt. * @param: tpm_dev, the tpm device device. @@ -288,10 +280,10 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, stop = jiffies + timeout; - if (chip->vendor.irq) { + if (chip->flags & TPM_CHIP_FLAG_IRQ) { cur_intrs = tpm_dev->intrs; clear_interruption(tpm_dev); - enable_irq(chip->vendor.irq); + enable_irq(tpm_dev->irq); do { if (ret == -ERESTARTSYS && freezing(current)) @@ -314,7 +306,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, } } while (ret == -ERESTARTSYS && freezing(current)); - disable_irq_nosync(chip->vendor.irq); + disable_irq_nosync(tpm_dev->irq); } else { do { @@ -376,7 +368,7 @@ static irqreturn_t tpm_ioserirq_handler(int irq, void *dev_id) tpm_dev->intrs++; wake_up_interruptible(&chip->vendor.read_queue); - disable_irq_nosync(chip->vendor.irq); + disable_irq_nosync(tpm_dev->irq); return IRQ_HANDLED; } /* tpm_ioserirq_handler() */ @@ -456,7 +448,7 @@ static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf, if (ret < 0) goto out_err; - if (chip->vendor.irq) { + if (chip->flags & TPM_CHIP_FLAG_IRQ) { ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); ret = wait_for_stat(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID, @@ -611,9 +603,10 @@ int st33zp24_probe(void *phy_id, const struct st33zp24_phy_ops *ops, if (ret < 0) goto _tpm_clean_answer; - chip->vendor.irq = irq; + tpm_dev->irq = irq; + chip->flags |= TPM_CHIP_FLAG_IRQ; - disable_irq_nosync(chip->vendor.irq); + disable_irq_nosync(tpm_dev->irq); tpm_gen_interrupt(chip); } diff --git a/drivers/char/tpm/st33zp24/st33zp24.h b/drivers/char/tpm/st33zp24/st33zp24.h index bcbd5ff..27e7564 100644 --- a/drivers/char/tpm/st33zp24/st33zp24.h +++ b/drivers/char/tpm/st33zp24/st33zp24.h @@ -21,6 +21,16 @@ #define TPM_WRITE_DIRECTION 0x80 #define TPM_BUFSIZE 2048 +struct st33zp24_dev { + struct tpm_chip *chip; + void *phy_id; + const struct st33zp24_phy_ops *ops; + int irq; + u32 intrs; + int io_lpcpd; +}; + + struct st33zp24_phy_ops { int (*send)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size); int (*recv)(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size); diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 5397b64..101bb47 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -359,7 +359,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, goto out; } - if (chip->vendor.irq) + if (chip->flags & TPM_CHIP_FLAG_IRQ) goto out_recv; if (chip->flags & TPM_CHIP_FLAG_TPM2) @@ -890,7 +890,7 @@ int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, stop = jiffies + timeout; - if (chip->vendor.irq) { + if (chip->flags & TPM_CHIP_FLAG_IRQ) { again: timeout = stop - jiffies; if ((long)timeout <= 0) diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 357ac14..ad4799c 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -131,8 +131,6 @@ enum tpm2_startup_types { struct tpm_chip; struct tpm_vendor_specific { - int irq; - int locality; unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */ bool timeout_adjusted; @@ -154,6 +152,7 @@ struct tpm_vendor_specific { enum tpm_chip_flags { TPM_CHIP_FLAG_REGISTERED = BIT(0), TPM_CHIP_FLAG_TPM2 = BIT(1), + TPM_CHIP_FLAG_IRQ = BIT(2), }; struct tpm_chip { diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index dd8f0eb..55fa51f 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -173,7 +173,6 @@ static int i2c_atmel_probe(struct i2c_client *client, chip->vendor.timeout_b = msecs_to_jiffies(TPM_I2C_LONG_TIMEOUT); chip->vendor.timeout_c = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT); chip->vendor.timeout_d = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT); - chip->vendor.irq = 0; /* There is no known way to probe for this device, and all version * information seems to be read via TPM commands. Thus we rely on the diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c index e74f1c1..093daf9 100644 --- a/drivers/char/tpm/tpm_i2c_infineon.c +++ b/drivers/char/tpm/tpm_i2c_infineon.c @@ -585,9 +585,6 @@ static int tpm_tis_i2c_init(struct device *dev) if (IS_ERR(chip)) return PTR_ERR(chip); - /* Disable interrupts */ - chip->vendor.irq = 0; - /* Default timeouts */ chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT); chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT); diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c index a43b5f3..75a80e466 100644 --- a/drivers/char/tpm/tpm_i2c_nuvoton.c +++ b/drivers/char/tpm/tpm_i2c_nuvoton.c @@ -55,6 +55,7 @@ #define I2C_DRIVER_NAME "tpm_i2c_nuvoton" struct priv_data { + int irq; unsigned int intrs; }; @@ -176,12 +177,12 @@ static bool i2c_nuvoton_check_status(struct tpm_chip *chip, u8 mask, u8 value) static int i2c_nuvoton_wait_for_stat(struct tpm_chip *chip, u8 mask, u8 value, u32 timeout, wait_queue_head_t *queue) { - if (chip->vendor.irq && queue) { + if ((chip->flags & TPM_CHIP_FLAG_IRQ) && queue) { s32 rc; struct priv_data *priv = chip->vendor.priv; unsigned int cur_intrs = priv->intrs; - enable_irq(chip->vendor.irq); + enable_irq(priv->irq); rc = wait_event_interruptible_timeout(*queue, cur_intrs != priv->intrs, timeout); @@ -477,7 +478,7 @@ static irqreturn_t i2c_nuvoton_int_handler(int dummy, void *dev_id) priv->intrs++; wake_up(&chip->vendor.read_queue); - disable_irq_nosync(chip->vendor.irq); + disable_irq_nosync(priv->irq); return IRQ_HANDLED; } @@ -521,6 +522,7 @@ static int i2c_nuvoton_probe(struct i2c_client *client, int rc; struct tpm_chip *chip; struct device *dev = &client->dev; + struct priv_data *priv; u32 vid = 0; rc = get_vid(client, &vid); @@ -534,10 +536,10 @@ static int i2c_nuvoton_probe(struct i2c_client *client, if (IS_ERR(chip)) return PTR_ERR(chip); - chip->vendor.priv = devm_kzalloc(dev, sizeof(struct priv_data), - GFP_KERNEL); - if (!chip->vendor.priv) + priv = devm_kzalloc(dev, sizeof(struct priv_data), GFP_KERNEL); + if (!priv) return -ENOMEM; + chip->vendor.priv = priv; init_waitqueue_head(&chip->vendor.read_queue); @@ -552,19 +554,21 @@ static int i2c_nuvoton_probe(struct i2c_client *client, * TPM_INTF_INT_LEVEL_LOW | TPM_INTF_DATA_AVAIL_INT * The IRQ should be set in the i2c_board_info (which is done * automatically in of_i2c_register_devices, for device tree users */ - chip->vendor.irq = client->irq; + chip->flags |= TPM_CHIP_FLAG_IRQ; + priv->irq = client->irq; - if (chip->vendor.irq) { - dev_dbg(dev, "%s() chip-vendor.irq\n", __func__); - rc = devm_request_irq(dev, chip->vendor.irq, + if (chip->flags & TPM_CHIP_FLAG_IRQ) { + dev_dbg(dev, "%s() priv->irq\n", __func__); + rc = devm_request_irq(dev, client->irq, i2c_nuvoton_int_handler, IRQF_TRIGGER_LOW, dev_name(&chip->dev), chip); if (rc) { dev_err(dev, "%s() Unable to request irq: %d for use\n", - __func__, chip->vendor.irq); - chip->vendor.irq = 0; + __func__, priv->irq); + chip->flags &= ~TPM_CHIP_FLAG_IRQ; + priv->irq = 0; } else { /* Clear any pending interrupt */ i2c_nuvoton_ready(chip); diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index 19dac62..b8bb502 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -96,6 +96,7 @@ struct tpm_info { struct priv_data { void __iomem *iobase; u16 manufacturer_id; + int irq; bool irq_tested; wait_queue_head_t int_queue; }; @@ -177,7 +178,7 @@ static int request_locality(struct tpm_chip *chip, int l) stop = jiffies + chip->vendor.timeout_a; - if (chip->vendor.irq) { + if (chip->flags & TPM_CHIP_FLAG_IRQ) { again: timeout = stop - jiffies; if ((long)timeout <= 0) @@ -385,8 +386,9 @@ static void disable_interrupts(struct tpm_chip *chip) intmask &= ~TPM_GLOBAL_INT_ENABLE; iowrite32(intmask, priv->iobase + TPM_INT_ENABLE(chip->vendor.locality)); - devm_free_irq(&chip->dev, chip->vendor.irq, chip); - chip->vendor.irq = 0; + devm_free_irq(&chip->dev, priv->irq, chip); + priv->irq = 0; + chip->flags &= ~TPM_CHIP_FLAG_IRQ; } /* @@ -409,7 +411,7 @@ static int tpm_tis_send_main(struct tpm_chip *chip, u8 *buf, size_t len) iowrite8(TPM_STS_GO, priv->iobase + TPM_STS(chip->vendor.locality)); - if (chip->vendor.irq) { + if (chip->flags & TPM_CHIP_FLAG_IRQ) { ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); if (chip->flags & TPM_CHIP_FLAG_TPM2) @@ -436,14 +438,16 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len) int rc, irq; struct priv_data *priv = chip->vendor.priv; - if (!chip->vendor.irq || priv->irq_tested) + if (!(chip->flags & TPM_CHIP_FLAG_IRQ) || priv->irq_tested) return tpm_tis_send_main(chip, buf, len); /* Verify receipt of the expected IRQ */ - irq = chip->vendor.irq; - chip->vendor.irq = 0; + irq = priv->irq; + priv->irq = 0; + chip->flags &= ~TPM_CHIP_FLAG_IRQ; rc = tpm_tis_send_main(chip, buf, len); - chip->vendor.irq = irq; + priv->irq = irq; + chip->flags |= TPM_CHIP_FLAG_IRQ; if (!priv->irq_tested) msleep(1); if (!priv->irq_tested) @@ -605,7 +609,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, irq); return -1; } - chip->vendor.irq = irq; + priv->irq = irq; original_int_vec = ioread8(priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); @@ -634,7 +638,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask, /* tpm_tis_send will either confirm the interrupt is working or it * will call disable_irq which undoes all of the above. */ - if (!chip->vendor.irq) { + if (!(chip->flags & TPM_CHIP_FLAG_IRQ)) { iowrite8(original_int_vec, priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); return 1; @@ -802,7 +806,7 @@ static int tpm_tis_init(struct device *dev, struct tpm_info *tpm_info, if (tpm_info->irq) { tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, tpm_info->irq); - if (!chip->vendor.irq) + if (!(chip->flags & TPM_CHIP_FLAG_IRQ)) dev_err(&chip->dev, FW_BUG "TPM interrupt not working, polling instead\n"); } else @@ -846,7 +850,7 @@ static void tpm_tis_reenable_interrupts(struct tpm_chip *chip) /* reenable interrupts that device may have lost or BIOS/firmware may have disabled */ - iowrite8(chip->vendor.irq, priv->iobase + + iowrite8(priv->irq, priv->iobase + TPM_INT_VECTOR(chip->vendor.locality)); intmask = @@ -865,7 +869,7 @@ static int tpm_tis_resume(struct device *dev) struct tpm_chip *chip = dev_get_drvdata(dev); int ret; - if (chip->vendor.irq) + if (chip->flags & TPM_CHIP_FLAG_IRQ) tpm_tis_reenable_interrupts(chip); ret = tpm_pm_resume(dev); diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index 3111f27..329941d 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -28,6 +28,7 @@ struct tpm_private { unsigned int evtchn; int ring_ref; domid_t backend_id; + int irq; }; enum status_bits { @@ -217,7 +218,7 @@ static int setup_ring(struct xenbus_device *dev, struct tpm_private *priv) xenbus_dev_fatal(dev, rv, "allocating TPM irq"); return rv; } - priv->chip->vendor.irq = rv; + priv->irq = rv; again: rv = xenbus_transaction_start(&xbt); @@ -277,8 +278,8 @@ static void ring_free(struct tpm_private *priv) else free_page((unsigned long)priv->shr); - if (priv->chip && priv->chip->vendor.irq) - unbind_from_irqhandler(priv->chip->vendor.irq, priv); + if (priv->irq) + unbind_from_irqhandler(priv->irq, priv); kfree(priv); }
Dropped the field 'irq' from struct tpm_vendor_specific and make it available to the various private structures in the drivers using irqs. A dedicated flag TPM_CHIP_FLAG_IRQ is added for the upper layers. In st33zp24, struct st33zp24_dev declaration is moved to st33zp24.h in order to make accessible irq from other phy's(i2c, spi). In tpm_i2c_nuvoton, chip->vendor.priv is not directly allocated. We can access irq field from priv_data in a cleaner way. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> --- drivers/char/tpm/st33zp24/st33zp24.c | 23 ++++++++--------------- drivers/char/tpm/st33zp24/st33zp24.h | 10 ++++++++++ drivers/char/tpm/tpm-interface.c | 4 ++-- drivers/char/tpm/tpm.h | 3 +-- drivers/char/tpm/tpm_i2c_atmel.c | 1 - drivers/char/tpm/tpm_i2c_infineon.c | 3 --- drivers/char/tpm/tpm_i2c_nuvoton.c | 28 ++++++++++++++++------------ drivers/char/tpm/tpm_tis.c | 30 +++++++++++++++++------------- drivers/char/tpm/xen-tpmfront.c | 7 ++++--- 9 files changed, 58 insertions(+), 51 deletions(-)