diff options
| author | Shyam Sundar S K <Shyam-sundar.S-k@amd.com> | 2024-09-23 10:03:56 +0200 |
|---|---|---|
| committer | Andi Shyti <andi.shyti@kernel.org> | 2024-11-13 23:29:46 +0100 |
| commit | 05d980046f5a202977f903db4ba67f3816dbcc7a (patch) | |
| tree | d5969f650e577bd4e3f55bff1ec6be473f5eb42a /drivers/i2c/busses/i2c-piix4.c | |
| parent | i2c: piix4: Move i2c_piix4 macros and structures to common header (diff) | |
| download | linux-05d980046f5a202977f903db4ba67f3816dbcc7a.tar.xz linux-05d980046f5a202977f903db4ba67f3816dbcc7a.zip | |
i2c: piix4: Export i2c_piix4 driver functions as library
Export the following i2c_piix4 driver functions as a library so that the
AMD ASF driver can utilize these core functionalities from the i2c_piix4
driver:
- piix4_sb800_region_request(): Request access to a specific SMBus region
on the SB800 chipset.
- piix4_sb800_region_release(): Release the previously requested SMBus
region on the SB800 chipset.
- piix4_transaction(): Handle SMBus transactions between the SMBus
controller and connected devices.
- piix4_sb800_port_sel(): Select the appropriate SMBus port on the SB800
chipset.
By making these functions available as a library, enable the AMD ASF
driver to leverage the established mechanisms in the i2c_piix4 driver,
promoting code reuse and consistency across different drivers.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Co-developed-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-piix4.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index bd9d9ea43394..9c6bcfd467e8 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -156,8 +156,7 @@ struct i2c_piix4_adapdata { struct sb800_mmio_cfg mmio_cfg; }; -static int piix4_sb800_region_request(struct device *dev, - struct sb800_mmio_cfg *mmio_cfg) +int piix4_sb800_region_request(struct device *dev, struct sb800_mmio_cfg *mmio_cfg) { if (mmio_cfg->use_mmio) { void __iomem *addr; @@ -195,9 +194,9 @@ static int piix4_sb800_region_request(struct device *dev, return 0; } +EXPORT_SYMBOL_NS_GPL(piix4_sb800_region_request, PIIX4_SMBUS); -static void piix4_sb800_region_release(struct device *dev, - struct sb800_mmio_cfg *mmio_cfg) +void piix4_sb800_region_release(struct device *dev, struct sb800_mmio_cfg *mmio_cfg) { if (mmio_cfg->use_mmio) { iounmap(mmio_cfg->addr); @@ -208,6 +207,7 @@ static void piix4_sb800_region_release(struct device *dev, release_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE); } +EXPORT_SYMBOL_NS_GPL(piix4_sb800_region_release, PIIX4_SMBUS); static bool piix4_sb800_use_mmio(struct pci_dev *PIIX4_dev) { @@ -517,7 +517,7 @@ static int piix4_setup_aux(struct pci_dev *PIIX4_dev, return piix4_smba; } -static int piix4_transaction(struct i2c_adapter *piix4_adapter, unsigned short piix4_smba) +int piix4_transaction(struct i2c_adapter *piix4_adapter, unsigned short piix4_smba) { int temp; int result = 0; @@ -590,6 +590,7 @@ static int piix4_transaction(struct i2c_adapter *piix4_adapter, unsigned short p inb_p(SMBHSTDAT1)); return result; } +EXPORT_SYMBOL_NS_GPL(piix4_transaction, PIIX4_SMBUS); /* Return negative errno on error. */ static s32 piix4_access(struct i2c_adapter * adap, u16 addr, @@ -743,7 +744,7 @@ static void piix4_imc_wakeup(void) release_region(KERNCZ_IMC_IDX, 2); } -static int piix4_sb800_port_sel(u8 port, struct sb800_mmio_cfg *mmio_cfg) +int piix4_sb800_port_sel(u8 port, struct sb800_mmio_cfg *mmio_cfg) { u8 smba_en_lo, val; @@ -765,6 +766,7 @@ static int piix4_sb800_port_sel(u8 port, struct sb800_mmio_cfg *mmio_cfg) return (smba_en_lo & piix4_port_mask_sb800); } +EXPORT_SYMBOL_NS_GPL(piix4_sb800_port_sel, PIIX4_SMBUS); /* * Handles access to multiple SMBus ports on the SB800. |