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Add hotplug support to mcp251x driver

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Chip model can now be selected directly by matching the modalias name
(instead of filling the .model field in platform_data), and allows the
module to be auto-loaded. Previous behaviour is of course still supported.

Convert the two in-tree users to this feature (icontrol & zeus).
Tested on an Zeus platform (mcp2515).

Signed-off-by: Marc Zyngier <maz@misterjones.org>
Acked-by: Christian Pellegrin <chripell@fsfe.org>
Cc: Edwin Peer <epeer@tmtservices.co.za>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marc Zyngier
2010-03-29 08:57:56 +00:00
committed by David S. Miller
parent 598ed9367a
commit e446630c96
4 changed files with 21 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/arm/mach-pxa/icontrol.c
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@@ -73,7 +73,6 @@ static struct pxa2xx_spi_chip mcp251x_chip_info4 = {
static struct mcp251x_platform_data mcp251x_info = {
.oscillator_frequency = 16E6,
.model = CAN_MCP251X_MCP2515,
.board_specific_setup = NULL,
.power_enable = NULL,
.transceiver_enable = NULL
@@ -81,7 +80,7 @@ static struct mcp251x_platform_data mcp251x_info = {
static struct spi_board_info mcp251x_board_info[] = {
{
.modalias = "mcp251x",
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 3,
.chip_select = 0,
@@ -90,7 +89,7 @@ static struct spi_board_info mcp251x_board_info[] = {
.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ1)
},
{
.modalias = "mcp251x",
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 3,
.chip_select = 1,
@@ -99,7 +98,7 @@ static struct spi_board_info mcp251x_board_info[] = {
.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ2)
},
{
.modalias = "mcp251x",
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 4,
.chip_select = 0,
@@ -108,7 +107,7 @@ static struct spi_board_info mcp251x_board_info[] = {
.irq = gpio_to_irq(ICONTROL_MCP251x_nIRQ3)
},
{
.modalias = "mcp251x",
.modalias = "mcp2515",
.max_speed_hz = 6500000,
.bus_num = 4,
.chip_select = 1,