i2c: designware-pci: Add support for Elkhart Lake PSE I2C

Add support for Intel(R) Programmable Services Engine (Intel(R) PSE) I2C
controller in Intel Elkhart Lake when interface is assigned to the host
processor.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 249ee3ee2a09cbe1e4489cef524890f30d898567..050adda7c1bdf5d1ea511f0d2ada1e890a5919c7 100644 (file)
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -33,6 +33,7 @@ enum dw_pci_ctl_id_t {
        baytrail,
        cherrytrail,
        haswell,
+       elkhartlake,
 };
 
 struct dw_scl_sda_cfg {
@@ -168,6 +169,14 @@ static struct dw_pci_controller dw_pci_controllers[] = {
                .flags = MODEL_CHERRYTRAIL,
                .scl_sda_cfg = &byt_config,
        },
+       [elkhartlake] = {
+               .bus_num = -1,
+               .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
+               .tx_fifo_depth = 32,
+               .rx_fifo_depth = 32,
+               .functionality = I2C_FUNC_10BIT_ADDR,
+               .clk_khz = 100000,
+       },
 };
 
 #ifdef CONFIG_PM
@@ -340,6 +349,15 @@ static const struct pci_device_id i2_designware_pci_ids[] = {
        { PCI_VDEVICE(INTEL, 0x22C5), cherrytrail },
        { PCI_VDEVICE(INTEL, 0x22C6), cherrytrail },
        { PCI_VDEVICE(INTEL, 0x22C7), cherrytrail },
+       /* Elkhart Lake (PSE I2C) */
+       { PCI_VDEVICE(INTEL, 0x4bb9), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bba), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bbb), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bbc), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bbd), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bbe), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bbf), elkhartlake },
+       { PCI_VDEVICE(INTEL, 0x4bc0), elkhartlake },
        { 0,}
 };
 MODULE_DEVICE_TABLE(pci, i2_designware_pci_ids);