mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-09-19 22:08:32 +00:00
94 lines
2.3 KiB
Diff
94 lines
2.3 KiB
Diff
From 9d30bb9e947f0a97fe9d96090d2bc001faf99e75 Mon Sep 17 00:00:00 2001
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From: Ashokkumar G <0xfee1dead.sa@gmail.com>
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Date: Mon, 27 Jan 2014 09:47:06 -0700
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Subject: [PATCH 3/9] arch:arm:mmp: Adding spi master and mtd dataflash for
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gplugd
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1. Adding SPI master for gplugd
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2. Adding atmel mtd dataflash on SPI for gplugd
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---
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arch/arm/mach-mmp/gplugd.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 48 insertions(+)
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diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c
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index 83a7019b14f9..9c441e1b3159 100644
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--- a/arch/arm/mach-mmp/gplugd.c
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+++ b/arch/arm/mach-mmp/gplugd.c
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@@ -12,6 +12,8 @@
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/gpio-pxa.h>
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+#include <linux/spi/spi.h>
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+#include <linux/spi/pxa2xx_spi.h>
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#include <asm/mach/arch.h>
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#include <asm/mach-types.h>
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@@ -185,6 +187,46 @@ static void __init select_disp_freq(void)
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}
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}
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+static struct pxa2xx_spi_master pxa_ssp_master_info = {
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+ .num_chipselect = 1,
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+ .enable_dma = 1,
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+};
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+
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+static struct pxa2xx_spi_chip AT45DB041D_spi_info = {
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+ .tx_threshold = 1,
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+ .rx_threshold = 1,
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+ .timeout = 1000,
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+ .gpio_cs = 110
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+};
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+
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+static struct spi_board_info __initdata gplugD_spi_board_info[] = {
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+ {
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+ .modalias = "mtd_dataflash",
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+ .mode = SPI_MODE_0,
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+ .max_speed_hz = 260000,
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+ .bus_num = 2,
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+ .chip_select = 0,
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+ .platform_data = NULL,
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+ .controller_data = &AT45DB041D_spi_info,
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+ .irq = -1,
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+ },
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+};
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+
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+static inline int pxa168_add_spi(int id, struct pxa2xx_spi_master *pdata)
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+{
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+ struct platform_device *pd;
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+
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+ pd = platform_device_alloc("pxa2xx-spi", id);
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+ if (pd == NULL) {
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+ pr_err("pxa2xx-spi: failed to allocate device (id=%d)\n", id);
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+ return -ENOMEM;
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+ }
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+
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+ platform_device_add_data(pd, pdata, sizeof(*pdata));
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+
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+ return platform_device_add(pd);
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+}
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+
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static void __init gplugd_init(void)
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{
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mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
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@@ -196,11 +238,17 @@ static void __init gplugd_init(void)
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/* on-chip devices */
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pxa168_add_uart(3);
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+
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pxa168_add_ssp(1);
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pxa168_add_twsi(0, &i2c_info, ARRAY_AND_SIZE(gplugd_i2c_board_info));
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pxa168_add_eth(&gplugd_eth_platform_data);
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+
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+ pxa168_add_ssp(2);
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+
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+ pxa168_add_spi(2, &pxa_ssp_master_info);
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+ spi_register_board_info(gplugD_spi_board_info, ARRAY_SIZE(gplugD_spi_board_info));
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}
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MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
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--
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2.14.1
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