[PATCH 4/14] ARM: LPC32xx: Add DMA configuration to platform data
Roland Stigge
stigge at antcom.de
Mon Jun 11 07:02:07 EDT 2012
This patch adds DMA channel configuration to the LPC32xx platform file. The
configured DMA signalling is generic for LPC32xx SoC and is not board specific.
Signed-off-by: Roland Stigge <stigge at antcom.de>
---
arch/arm/mach-lpc32xx/phy3250.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
--- linux-2.6.orig/arch/arm/mach-lpc32xx/phy3250.c
+++ linux-2.6/arch/arm/mach-lpc32xx/phy3250.c
@@ -226,7 +226,37 @@ static int __init phy3250_spi_board_regi
}
arch_initcall(phy3250_spi_board_register);
+static struct pl08x_channel_data pl08x_slave_channels[] = {
+ {
+ .bus_id = "nand-slc",
+ .min_signal = 1, /* SLC NAND Flash */
+ .max_signal = 1,
+ .periph_buses = PL08X_AHB1,
+ },
+ {
+ .bus_id = "nand-mlc",
+ .min_signal = 12, /* MLC NAND Flash */
+ .max_signal = 12,
+ .periph_buses = PL08X_AHB1,
+ },
+};
+
+static int pl08x_get_signal(struct pl08x_dma_chan *ch)
+{
+ return ch->cd->min_signal;
+}
+
+static void pl08x_put_signal(struct pl08x_dma_chan *ch)
+{
+}
+
static struct pl08x_platform_data pl08x_pd = {
+ .slave_channels = &pl08x_slave_channels[0],
+ .num_slave_channels = ARRAY_SIZE(pl08x_slave_channels),
+ .get_signal = &pl08x_get_signal,
+ .put_signal = &pl08x_put_signal,
+ .lli_buses = PL08X_AHB1,
+ .mem_buses = PL08X_AHB1,
};
static const struct of_dev_auxdata lpc32xx_auxdata_lookup[] __initconst = {
More information about the linux-arm-kernel
mailing list