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authorMarc Kleine-Budde <mkl@pengutronix.de>2010-10-18 15:00:18 +0200
committerMarc Kleine-Budde <mkl@pengutronix.de>2010-10-18 15:16:08 +0200
commitf1f8c6cbe6f08f93ac2a4ca19625891d8a82b7f8 (patch)
tree0ed97a9e3ed0414f69a7ad65778ee4dbeb282642 /drivers
parentd3cd15657516141adce387810be8cb377baf020e (diff)
can: mcp251x: Don't use pdata->model for chip selection anymore
Since commit e446630c960946b5c1762e4eadb618becef599e7, i.e. v2.6.35-rc1, the mcp251x chip model can be selected via the modalias member in the struct spi_board_info. The driver stores the actual model in the struct mcp251x_platform_data. From the driver point of view the platform_data should be read only. Since all in-tree users of the mcp251x have already been converted to the modalias method, this patch moves the "model" member from the struct mcp251x_platform_data to the driver's private data structure. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Cc: Christian Pellegrin <chripell@fsfe.org> Cc: Marc Zyngier <maz@misterjones.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/can/mcp251x.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index f5e2edd09ce4..0386bed43551 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -38,14 +38,14 @@
* static struct mcp251x_platform_data mcp251x_info = {
* .oscillator_frequency = 8000000,
* .board_specific_setup = &mcp251x_setup,
- * .model = CAN_MCP251X_MCP2510,
* .power_enable = mcp251x_power_enable,
* .transceiver_enable = NULL,
* };
*
* static struct spi_board_info spi_board_info[] = {
* {
- * .modalias = "mcp251x",
+ * .modalias = "mcp2510",
+ * // or "mcp2515" depending on your controller
* .platform_data = &mcp251x_info,
* .irq = IRQ_EINT13,
* .max_speed_hz = 2*1000*1000,
@@ -224,10 +224,16 @@ static struct can_bittiming_const mcp251x_bittiming_const = {
.brp_inc = 1,
};
+enum mcp251x_model {
+ CAN_MCP251X_MCP2510 = 0x2510,
+ CAN_MCP251X_MCP2515 = 0x2515,
+};
+
struct mcp251x_priv {
struct can_priv can;
struct net_device *net;
struct spi_device *spi;
+ enum mcp251x_model model;
struct mutex mcp_lock; /* SPI device lock */
@@ -362,10 +368,9 @@ static void mcp251x_write_bits(struct spi_device *spi, u8 reg,
static void mcp251x_hw_tx_frame(struct spi_device *spi, u8 *buf,
int len, int tx_buf_idx)
{
- struct mcp251x_platform_data *pdata = spi->dev.platform_data;
struct mcp251x_priv *priv = dev_get_drvdata(&spi->dev);
- if (pdata->model == CAN_MCP251X_MCP2510) {
+ if (priv->model == CAN_MCP251X_MCP2510) {
int i;
for (i = 1; i < TXBDAT_OFF + len; i++)
@@ -408,9 +413,8 @@ static void mcp251x_hw_rx_frame(struct spi_device *spi, u8 *buf,
int buf_idx)
{
struct mcp251x_priv *priv = dev_get_drvdata(&spi->dev);
- struct mcp251x_platform_data *pdata = spi->dev.platform_data;
- if (pdata->model == CAN_MCP251X_MCP2510) {
+ if (priv->model == CAN_MCP251X_MCP2510) {
int i, len;
for (i = 1; i < RXBDAT_OFF; i++)
@@ -951,16 +955,12 @@ static int __devinit mcp251x_can_probe(struct spi_device *spi)
struct net_device *net;
struct mcp251x_priv *priv;
struct mcp251x_platform_data *pdata = spi->dev.platform_data;
- int model = spi_get_device_id(spi)->driver_data;
int ret = -ENODEV;
if (!pdata)
/* Platform data is required for osc freq */
goto error_out;
- if (model)
- pdata->model = model;
-
/* Allocate can/net device */
net = alloc_candev(sizeof(struct mcp251x_priv), TX_ECHO_SKB_MAX);
if (!net) {
@@ -977,6 +977,7 @@ static int __devinit mcp251x_can_probe(struct spi_device *spi)
priv->can.clock.freq = pdata->oscillator_frequency / 2;
priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
CAN_CTRLMODE_LOOPBACK | CAN_CTRLMODE_LISTENONLY;
+ priv->model = spi_get_device_id(spi)->driver_data;
priv->net = net;
dev_set_drvdata(&spi->dev, priv);
@@ -1150,8 +1151,7 @@ static int mcp251x_can_resume(struct spi_device *spi)
#define mcp251x_can_resume NULL
#endif
-static struct spi_device_id mcp251x_id_table[] = {
- { "mcp251x", 0 /* Use pdata.model */ },
+static const struct spi_device_id mcp251x_id_table[] = {
{ "mcp2510", CAN_MCP251X_MCP2510 },
{ "mcp2515", CAN_MCP251X_MCP2515 },
{ },