diff options
Diffstat (limited to 'drivers/char/tpm/st33zp24/spi.c')
| -rw-r--r-- | drivers/char/tpm/st33zp24/spi.c | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/drivers/char/tpm/st33zp24/spi.c b/drivers/char/tpm/st33zp24/spi.c index 74c5fcc5c397..f42c4435895a 100644 --- a/drivers/char/tpm/st33zp24/spi.c +++ b/drivers/char/tpm/st33zp24/spi.c @@ -145,7 +145,7 @@ static int st33zp24_spi_send(void *phy_id, u8 tpm_register, u8 *tpm_data, } /* st33zp24_spi_send() */ /* - * read8_recv + * st33zp24_spi_read8_recv * Recv byte from the TIS register according to the ST33ZP24 SPI protocol. * @param: phy_id, the phy description * @param: tpm_register, the tpm tis register where the data should be read @@ -153,7 +153,8 @@ static int st33zp24_spi_send(void *phy_id, u8 tpm_register, u8 *tpm_data, * @param: tpm_size, tpm TPM response size to read. * @return: should be zero if success else a negative error code. */ -static int read8_reg(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size) +static int st33zp24_spi_read8_reg(void *phy_id, u8 tpm_register, u8 *tpm_data, + int tpm_size) { u8 data = 0; int total_length = 0, ret; @@ -185,7 +186,7 @@ static int read8_reg(void *phy_id, u8 tpm_register, u8 *tpm_data, int tpm_size) } return ret; -} /* read8_reg() */ +} /* st33zp24_spi_read8_reg() */ /* * st33zp24_spi_recv @@ -201,13 +202,13 @@ static int st33zp24_spi_recv(void *phy_id, u8 tpm_register, u8 *tpm_data, { int ret; - ret = read8_reg(phy_id, tpm_register, tpm_data, tpm_size); + ret = st33zp24_spi_read8_reg(phy_id, tpm_register, tpm_data, tpm_size); if (!st33zp24_status_to_errno(ret)) return tpm_size; return ret; } /* st33zp24_spi_recv() */ -static int evaluate_latency(void *phy_id) +static int st33zp24_spi_evaluate_latency(void *phy_id) { struct st33zp24_spi_phy *phy = phy_id; int latency = 1, status = 0; @@ -215,7 +216,8 @@ static int evaluate_latency(void *phy_id) while (!status && latency < MAX_SPI_LATENCY) { phy->latency = latency; - status = read8_reg(phy_id, TPM_INTF_CAPABILITY, &data, 1); + status = st33zp24_spi_read8_reg(phy_id, TPM_INTF_CAPABILITY, + &data, 1); latency++; } return latency - 1; @@ -227,7 +229,7 @@ static const struct st33zp24_phy_ops spi_phy_ops = { }; #ifdef CONFIG_OF -static int tpm_stm_spi_of_request_resources(struct st33zp24_spi_phy *phy) +static int st33zp24_spi_of_request_resources(struct st33zp24_spi_phy *phy) { struct device_node *pp; struct spi_device *dev = phy->spi_device; @@ -265,14 +267,14 @@ static int tpm_stm_spi_of_request_resources(struct st33zp24_spi_phy *phy) return 0; } #else -static int tpm_stm_spi_of_request_resources(struct st33zp24_spi_phy *phy) +static int st33zp24_spi_of_request_resources(struct st33zp24_spi_phy *phy) { return -ENODEV; } #endif -static int tpm_stm_spi_request_resources(struct spi_device *dev, - struct st33zp24_spi_phy *phy) +static int st33zp24_spi_request_resources(struct spi_device *dev, + struct st33zp24_spi_phy *phy) { struct st33zp24_platform_data *pdata; int ret; @@ -301,13 +303,12 @@ static int tpm_stm_spi_request_resources(struct spi_device *dev, } /* - * tpm_st33_spi_probe initialize the TPM device + * st33zp24_spi_probe initialize the TPM device * @param: dev, the spi_device drescription (TPM SPI description). * @return: 0 in case of success. * or a negative value describing the error. */ -static int -tpm_st33_spi_probe(struct spi_device *dev) +static int st33zp24_spi_probe(struct spi_device *dev) { int ret; struct st33zp24_platform_data *pdata; @@ -328,11 +329,11 @@ tpm_st33_spi_probe(struct spi_device *dev) phy->spi_device = dev; pdata = dev->dev.platform_data; if (!pdata && dev->dev.of_node) { - ret = tpm_stm_spi_of_request_resources(phy); + ret = st33zp24_spi_of_request_resources(phy); if (ret) return ret; } else if (pdata) { - ret = tpm_stm_spi_request_resources(dev, phy); + ret = st33zp24_spi_request_resources(dev, phy); if (ret) return ret; } @@ -340,7 +341,7 @@ tpm_st33_spi_probe(struct spi_device *dev) phy->spi_xfer.tx_buf = phy->tx_buf; phy->spi_xfer.rx_buf = phy->rx_buf; - phy->latency = evaluate_latency(phy); + phy->latency = st33zp24_spi_evaluate_latency(phy); if (phy->latency <= 0) return -ENODEV; @@ -349,11 +350,11 @@ tpm_st33_spi_probe(struct spi_device *dev) } /* - * tpm_st33_spi_remove remove the TPM device + * st33zp24_spi_remove remove the TPM device * @param: client, the spi_device drescription (TPM SPI description). * @return: 0 in case of success. */ -static int tpm_st33_spi_remove(struct spi_device *dev) +static int st33zp24_spi_remove(struct spi_device *dev) { struct tpm_chip *chip = spi_get_drvdata(dev); @@ -377,18 +378,18 @@ MODULE_DEVICE_TABLE(of, of_st33zp24_spi_match); static SIMPLE_DEV_PM_OPS(st33zp24_spi_ops, st33zp24_pm_suspend, st33zp24_pm_resume); -static struct spi_driver tpm_st33_spi_driver = { +static struct spi_driver st33zp24_spi_driver = { .driver = { .name = TPM_ST33_SPI, .pm = &st33zp24_spi_ops, .of_match_table = of_match_ptr(of_st33zp24_spi_match), }, - .probe = tpm_st33_spi_probe, - .remove = tpm_st33_spi_remove, + .probe = st33zp24_spi_probe, + .remove = st33zp24_spi_remove, .id_table = st33zp24_spi_id, }; -module_spi_driver(tpm_st33_spi_driver); +module_spi_driver(st33zp24_spi_driver); MODULE_AUTHOR("TPM support (TPMsupport@list.st.com)"); MODULE_DESCRIPTION("STM TPM 1.2 SPI ST33 Driver"); |