diff options
Diffstat (limited to 'drivers/char/tpm/tpm_tis.c')
| -rw-r--r-- | drivers/char/tpm/tpm_tis.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index e2d1055fb814..f08949a5f678 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -133,93 +133,14 @@ static int check_acpi_tpm2(struct device *dev) } #endif -#ifdef CONFIG_X86 -#define INTEL_LEGACY_BLK_BASE_ADDR 0xFED08000 -#define ILB_REMAP_SIZE 0x100 -#define LPC_CNTRL_REG_OFFSET 0x84 -#define LPC_CLKRUN_EN (1 << 2) - -static void __iomem *ilb_base_addr; - -static inline bool is_bsw(void) -{ - return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0); -} - -/** - * tpm_platform_begin_xfer() - clear LPC CLKRUN_EN i.e. clocks will be running - */ -static void tpm_platform_begin_xfer(void) -{ - u32 clkrun_val; - - if (!is_bsw()) - return; - - clkrun_val = ioread32(ilb_base_addr + LPC_CNTRL_REG_OFFSET); - - /* Disable LPC CLKRUN# */ - clkrun_val &= ~LPC_CLKRUN_EN; - iowrite32(clkrun_val, ilb_base_addr + LPC_CNTRL_REG_OFFSET); - - /* - * Write any random value on port 0x80 which is on LPC, to make - * sure LPC clock is running before sending any TPM command. - */ - outb(0xCC, 0x80); - -} - -/** - * tpm_platform_end_xfer() - set LPC CLKRUN_EN i.e. clocks can be turned off - */ -static void tpm_platform_end_xfer(void) -{ - u32 clkrun_val; - - if (!is_bsw()) - return; - - clkrun_val = ioread32(ilb_base_addr + LPC_CNTRL_REG_OFFSET); - - /* Enable LPC CLKRUN# */ - clkrun_val |= LPC_CLKRUN_EN; - iowrite32(clkrun_val, ilb_base_addr + LPC_CNTRL_REG_OFFSET); - - /* - * Write any random value on port 0x80 which is on LPC, to make - * sure LPC clock is running before sending any TPM command. - */ - outb(0xCC, 0x80); - -} -#else -static inline bool is_bsw(void) -{ - return false; -} - -static void tpm_platform_begin_xfer(void) -{ -} - -static void tpm_platform_end_xfer(void) -{ -} -#endif - static int tpm_tcg_read_bytes(struct tpm_tis_data *data, u32 addr, u16 len, u8 *result) { struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); - tpm_platform_begin_xfer(); - while (len--) *result++ = ioread8(phy->iobase + addr); - tpm_platform_end_xfer(); - return 0; } @@ -228,13 +149,9 @@ static int tpm_tcg_write_bytes(struct tpm_tis_data *data, u32 addr, u16 len, { struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); - tpm_platform_begin_xfer(); - while (len--) iowrite8(*value++, phy->iobase + addr); - tpm_platform_end_xfer(); - return 0; } @@ -242,12 +159,8 @@ static int tpm_tcg_read16(struct tpm_tis_data *data, u32 addr, u16 *result) { struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); - tpm_platform_begin_xfer(); - *result = ioread16(phy->iobase + addr); - tpm_platform_end_xfer(); - return 0; } @@ -255,12 +168,8 @@ static int tpm_tcg_read32(struct tpm_tis_data *data, u32 addr, u32 *result) { struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); - tpm_platform_begin_xfer(); - *result = ioread32(phy->iobase + addr); - tpm_platform_end_xfer(); - return 0; } @@ -268,12 +177,8 @@ static int tpm_tcg_write32(struct tpm_tis_data *data, u32 addr, u32 value) { struct tpm_tis_tcg_phy *phy = to_tpm_tis_tcg_phy(data); - tpm_platform_begin_xfer(); - iowrite32(value, phy->iobase + addr); - tpm_platform_end_xfer(); - return 0; } @@ -461,11 +366,6 @@ static int __init init_tis(void) if (rc) goto err_force; -#ifdef CONFIG_X86 - if (is_bsw()) - ilb_base_addr = ioremap(INTEL_LEGACY_BLK_BASE_ADDR, - ILB_REMAP_SIZE); -#endif rc = platform_driver_register(&tis_drv); if (rc) goto err_platform; @@ -484,10 +384,6 @@ err_pnp: err_platform: if (force_pdev) platform_device_unregister(force_pdev); -#ifdef CONFIG_X86 - if (is_bsw()) - iounmap(ilb_base_addr); -#endif err_force: return rc; } @@ -497,10 +393,6 @@ static void __exit cleanup_tis(void) pnp_unregister_driver(&tis_pnp_driver); platform_driver_unregister(&tis_drv); -#ifdef CONFIG_X86 - if (is_bsw()) - iounmap(ilb_base_addr); -#endif if (force_pdev) platform_device_unregister(force_pdev); } |