AuxXxilium/linux_dsm_epyc7002
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i2c-axxia: dedicated function to set client addr

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This patch moves configuration of hardware registers used for setting
i2c client address to separate function. It is preparatory change for
next commit.

Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Adamski, Krzysztof (Nokia - PL/Wroclaw) 2018-12-10 15:00:52 +00:00 committed by Wolfram Sang
parent 66693960f5
commit eb9907789a
1 changed files with 18 additions and 11 deletions
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29
drivers/i2c/busses/i2c-axxia.c
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@ -337,17 +337,9 @@ static irqreturn_t axxia_i2c_isr(int irq, void *_dev)
return IRQ_HANDLED;
}
static int axxia_i2c_xfer_msg(struct axxia_i2c_dev *idev, struct i2c_msg *msg)
static void axxia_i2c_set_addr(struct axxia_i2c_dev *idev, struct i2c_msg *msg)
{
u32 int_mask = MST_STATUS_ERR | MST_STATUS_SNS;
u32 rx_xfer, tx_xfer;
u32 addr_1, addr_2;
unsigned long time_left;
unsigned int wt_value;
idev->msg = msg;
idev->msg_xfrd = 0;
reinit_completion(&idev->msg_complete);
if (i2c_m_ten(msg)) {
/* 10-bit address
@ -367,6 +359,23 @@ static int axxia_i2c_xfer_msg(struct axxia_i2c_dev *idev, struct i2c_msg *msg)
addr_2 = 0;
}
writel(addr_1, idev->base + MST_ADDR_1);
writel(addr_2, idev->base + MST_ADDR_2);
}
static int axxia_i2c_xfer_msg(struct axxia_i2c_dev *idev, struct i2c_msg *msg)
{
u32 int_mask = MST_STATUS_ERR | MST_STATUS_SNS;
u32 rx_xfer, tx_xfer;
unsigned long time_left;
unsigned int wt_value;
idev->msg = msg;
idev->msg_xfrd = 0;
reinit_completion(&idev->msg_complete);
axxia_i2c_set_addr(idev, msg);
if (i2c_m_rd(msg)) {
/* I2C read transfer */
rx_xfer = i2c_m_recv_len(msg) ? I2C_SMBUS_BLOCK_MAX : msg->len;
@ -379,8 +388,6 @@ static int axxia_i2c_xfer_msg(struct axxia_i2c_dev *idev, struct i2c_msg *msg)
writel(rx_xfer, idev->base + MST_RX_XFER);
writel(tx_xfer, idev->base + MST_TX_XFER);
writel(addr_1, idev->base + MST_ADDR_1);
writel(addr_2, idev->base + MST_ADDR_2);
if (i2c_m_rd(msg))
int_mask |= MST_STATUS_RFL;