[POWERPC] MPC832x_RDB: Update dts to use SPI1 in QE, register mmc_spi stub
Enabled using SPI controller on the MPC832x RDB board. We currently use a modalias of "spidev" as a place holder (replace with "mmc_spie") until the mmc_spi driver support is merged in. This gets us the ability to test SPI until then. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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@ -175,7 +175,7 @@
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reg = <4c0 40>;
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interrupts = <2>;
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interrupt-parent = <&qeic>;
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mode = "cpu";
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mode = "cpu-qe";
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};
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spi@500 {
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@ -15,6 +15,7 @@
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*/
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#include <linux/pci.h>
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#include <linux/spi/spi.h>
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#include <asm/of_platform.h>
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#include <asm/time.h>
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@ -22,6 +23,7 @@
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#include <asm/udbg.h>
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#include <asm/qe.h>
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#include <asm/qe_ic.h>
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#include <sysdev/fsl_soc.h>
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#include "mpc83xx.h"
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@ -32,6 +34,50 @@
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#define DBG(fmt...)
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#endif
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static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity)
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{
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pr_debug("%s %d %d\n", __func__, cs, polarity);
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par_io_data_set(3, 13, polarity);
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}
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static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity)
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{
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pr_debug("%s %d %d\n", __func__, cs, polarity);
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par_io_data_set(3, 13, !polarity);
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}
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static struct spi_board_info mpc832x_spi_boardinfo = {
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.bus_num = 0x4c0,
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.chip_select = 0,
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.max_speed_hz = 50000000,
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/*
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* XXX: This is spidev (spi in userspace) stub, should
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* be replaced by "mmc_spi" when mmc_spi will hit mainline.
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*/
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.modalias = "spidev",
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};
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static int __init mpc832x_spi_init(void)
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{
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if (!machine_is(mpc832x_rdb))
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return 0;
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par_io_config_pin(3, 0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
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par_io_config_pin(3, 1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
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par_io_config_pin(3, 2, 3, 0, 1, 0); /* SPI1 CLK, I/O */
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par_io_config_pin(3, 3, 2, 0, 1, 0); /* SPI1 SEL, I */
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par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS, O */
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par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
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par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */
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return fsl_spi_init(&mpc832x_spi_boardinfo, 1,
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mpc83xx_spi_activate_cs,
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mpc83xx_spi_deactivate_cs);
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}
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device_initcall(mpc832x_spi_init);
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/* ************************************************************************
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*
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* Setup the architecture
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