Commit 773c3e75 authored by Sriramakrishnan's avatar Sriramakrishnan Committed by David S. Miller

can: ti hecc module : add platform specific initialization callback.

CAN module on AM3517 requires programming of IO expander as part
of init sequence - to enable CAN PHY. Added platform specific
callback to handle phy control(switch on /off).
Signed-off-by: default avatarSriramakrishnan <srk@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 738b0343
......@@ -28,9 +28,11 @@
* .mbx_offset = 0x2000,
* .int_line = 0,
* .revision = 1,
* .transceiver_switch = hecc_phy_control,
* };
*
* Please see include/can/platform/ti_hecc.h for description of above fields
* Please see include/linux/can/platform/ti_hecc.h for description of
* above fields.
*
*/
......@@ -220,6 +222,7 @@ struct ti_hecc_priv {
u32 tx_head;
u32 tx_tail;
u32 rx_next;
void (*transceiver_switch)(int);
};
static inline int get_tx_head_mb(struct ti_hecc_priv *priv)
......@@ -317,6 +320,13 @@ static int ti_hecc_set_btc(struct ti_hecc_priv *priv)
return 0;
}
static void ti_hecc_transceiver_switch(const struct ti_hecc_priv *priv,
int on)
{
if (priv->transceiver_switch)
priv->transceiver_switch(on);
}
static void ti_hecc_reset(struct net_device *ndev)
{
u32 cnt;
......@@ -818,10 +828,13 @@ static int ti_hecc_open(struct net_device *ndev)
return err;
}
ti_hecc_transceiver_switch(priv, 1);
/* Open common can device */
err = open_candev(ndev);
if (err) {
dev_err(ndev->dev.parent, "open_candev() failed %d\n", err);
ti_hecc_transceiver_switch(priv, 0);
free_irq(ndev->irq, ndev);
return err;
}
......@@ -842,6 +855,7 @@ static int ti_hecc_close(struct net_device *ndev)
ti_hecc_stop(ndev);
free_irq(ndev->irq, ndev);
close_candev(ndev);
ti_hecc_transceiver_switch(priv, 0);
return 0;
}
......@@ -903,6 +917,7 @@ static int ti_hecc_probe(struct platform_device *pdev)
priv->hecc_ram_offset = pdata->hecc_ram_offset;
priv->mbx_offset = pdata->mbx_offset;
priv->int_line = pdata->int_line;
priv->transceiver_switch = pdata->transceiver_switch;
priv->can.bittiming_const = &ti_hecc_bittiming_const;
priv->can.do_set_mode = ti_hecc_do_set_mode;
......
#ifndef __CAN_PLATFORM_TI_HECC_H__
#define __CAN_PLATFORM_TI_HECC_H__
/*
* TI HECC (High End CAN Controller) driver platform header
*
......@@ -23,6 +26,7 @@
* @mbx_offset: Mailbox RAM offset
* @int_line: Interrupt line to use - 0 or 1
* @version: version for future use
* @transceiver_switch: platform specific callback fn for transceiver control
*
* Platform data structure to get all platform specific settings.
* this structure also accounts the fact that the IP may have different
......@@ -35,6 +39,6 @@ struct ti_hecc_platform_data {
u32 mbx_offset;
u32 int_line;
u32 version;
void (*transceiver_switch) (int);
};
#endif
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