[PATCH v3 05/36] platform/x86: intel_scu_ipc: Drop intel_scu_ipc_i2c_cntrl()

Mika Westerberg
2020-01-13T13:56:44Z

There are no existing users for this functionality so drop it from the
driver completely.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
arch/x86/include/asm/intel_scu_ipc.h | 3 --
drivers/platform/x86/intel_scu_ipc.c | 62 ----------------------------
2 files changed, 65 deletions(-)

diff --git a/arch/x86/include/asm/intel_scu_ipc.h b/arch/x86/include/asm/intel_scu_ipc.h
index 4a8c6e817398..d7bbebf4b729 100644
--- a/arch/x86/include/asm/intel_scu_ipc.h
+++ b/arch/x86/include/asm/intel_scu_ipc.h
@@ -53,9 +53,6 @@ int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,
int intel_scu_ipc_raw_command(int cmd, int sub, u8 *in, int inlen,
u32 *out, int outlen, u32 dptr, u32 sptr);

-/* I2C control api */
-int intel_scu_ipc_i2c_cntrl(u32 addr, u32 *data);
-
/* Update FW version */
int intel_scu_ipc_fw_update(u8 *buffer, u32 length);

diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c
index 6c44fe5e55b5..b39680b53387 100644
--- a/drivers/platform/x86/intel_scu_ipc.c
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -64,28 +64,21 @@

/* intel scu ipc driver data */
struct intel_scu_ipc_pdata_t {
- u32 i2c_base;
- u32 i2c_len;
u8 irq_mode;
};

/* Penwell and Cloverview */
static const struct intel_scu_ipc_pdata_t intel_scu_ipc_penwell_pdata = {
- .i2c_base = 0xff12b000,
- .i2c_len = 0x10,
.irq_mode = 1,
};

static const struct intel_scu_ipc_pdata_t intel_scu_ipc_tangier_pdata = {
- .i2c_base = 0xff00d000,
- .i2c_len = 0x10,
.irq_mode = 0,
};

struct intel_scu_ipc_dev {
struct device *dev;
void __iomem *ipc_base;
- void __iomem *i2c_base;
struct completion cmd_complete;
u8 irq_mode;
};
@@ -103,9 +96,6 @@ static struct intel_scu_ipc_dev ipcdev; /* Only one for now */
#define IPC_WRITE_BUFFER 0x80
#define IPC_READ_BUFFER 0x90

-#define IPC_I2C_CNTRL_ADDR 0
-#define I2C_DATA_ADDR 0x04
-
static DEFINE_MUTEX(ipclock); /* lock used to prevent multiple call to SCU */

/*
@@ -549,54 +539,6 @@ int intel_scu_ipc_raw_command(int cmd, int sub, u8 *in, int inlen,
}
EXPORT_SYMBOL_GPL(intel_scu_ipc_raw_command);

-/* I2C commands */
-#define IPC_I2C_WRITE 1 /* I2C Write command */
-#define IPC_I2C_READ 2 /* I2C Read command */
-
-/**
- * intel_scu_ipc_i2c_cntrl - I2C read/write operations
- * @addr: I2C address + command bits
- * @data: data to read/write
- *
- * Perform an an I2C read/write operation via the SCU. All locking is
- * handled for the caller. This function may sleep.
- *
- * Returns an error code or 0 on success.
- *
- * This has to be in the IPC driver for the locking.
- */
-int intel_scu_ipc_i2c_cntrl(u32 addr, u32 *data)
-{
- struct intel_scu_ipc_dev *scu = &ipcdev;
- u32 cmd = 0;
-
- mutex_lock(&ipclock);
- if (scu->dev == NULL) {
- mutex_unlock(&ipclock);
- return -ENODEV;
- }
- cmd = (addr >> 24) & 0xFF;
- if (cmd == IPC_I2C_READ) {
- writel(addr, scu->i2c_base + IPC_I2C_CNTRL_ADDR);
- /* Write not getting updated without delay */
- usleep_range(1000, 2000);
- *data = readl(scu->i2c_base + I2C_DATA_ADDR);
- } else if (cmd == IPC_I2C_WRITE) {
- writel(*data, scu->i2c_base + I2C_DATA_ADDR);
- usleep_range(1000, 2000);
- writel(addr, scu->i2c_base + IPC_I2C_CNTRL_ADDR);
- } else {
- dev_err(scu->dev,
- "intel_scu_ipc: I2C INVALID_CMD = 0x%x\n", cmd);
-
- mutex_unlock(&ipclock);
- return -EIO;
- }
- mutex_unlock(&ipclock);
- return 0;
-}
-EXPORT_SYMBOL(intel_scu_ipc_i2c_cntrl);
-
/*
* Interrupt handler gets called when ioc bit of IPC_COMMAND_REG set to 1
* When ioc bit is set to 1, caller api must wait for interrupt handler called
@@ -649,10 +591,6 @@ static int ipc_probe(struct pci_dev *pdev, const struct pci_device_id *id)

scu->ipc_base = pcim_iomap_table(pdev)[0];

- scu->i2c_base = ioremap_nocache(pdata->i2c_base, pdata->i2c_len);
- if (!scu->i2c_base)
- return -ENOMEM;
-
err = devm_request_irq(&pdev->dev, pdev->irq, ioc, 0, "intel_scu_ipc",
scu);
if (err)
--
2.24.1