PKGBUILDs/core/linux-mmp/0003-arch-arm-mmp-Adding-spi-master-and-mtd-dataflash-for.patch

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2017-09-03 20:23:12 +00:00
From 9d30bb9e947f0a97fe9d96090d2bc001faf99e75 Mon Sep 17 00:00:00 2001
2016-05-02 01:47:12 +00:00
From: Ashokkumar G <0xfee1dead.sa@gmail.com>
Date: Mon, 27 Jan 2014 09:47:06 -0700
2017-09-03 20:23:12 +00:00
Subject: [PATCH 3/9] arch:arm:mmp: Adding spi master and mtd dataflash for
2016-05-02 01:47:12 +00:00
gplugd
1. Adding SPI master for gplugd
2. Adding atmel mtd dataflash on SPI for gplugd
---
arch/arm/mach-mmp/gplugd.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c
2017-02-09 01:28:44 +00:00
index 83a7019b14f9..9c441e1b3159 100644
2016-05-02 01:47:12 +00:00
--- a/arch/arm/mach-mmp/gplugd.c
+++ b/arch/arm/mach-mmp/gplugd.c
@@ -12,6 +12,8 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/gpio-pxa.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/pxa2xx_spi.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
@@ -185,6 +187,46 @@ static void __init select_disp_freq(void)
}
}
+static struct pxa2xx_spi_master pxa_ssp_master_info = {
+ .num_chipselect = 1,
+ .enable_dma = 1,
+};
+
+static struct pxa2xx_spi_chip AT45DB041D_spi_info = {
+ .tx_threshold = 1,
+ .rx_threshold = 1,
+ .timeout = 1000,
+ .gpio_cs = 110
+};
+
+static struct spi_board_info __initdata gplugD_spi_board_info[] = {
+ {
+ .modalias = "mtd_dataflash",
+ .mode = SPI_MODE_0,
+ .max_speed_hz = 260000,
+ .bus_num = 2,
+ .chip_select = 0,
+ .platform_data = NULL,
+ .controller_data = &AT45DB041D_spi_info,
+ .irq = -1,
+ },
+};
+
+static inline int pxa168_add_spi(int id, struct pxa2xx_spi_master *pdata)
+{
+ struct platform_device *pd;
+
+ pd = platform_device_alloc("pxa2xx-spi", id);
+ if (pd == NULL) {
+ pr_err("pxa2xx-spi: failed to allocate device (id=%d)\n", id);
+ return -ENOMEM;
+ }
+
+ platform_device_add_data(pd, pdata, sizeof(*pdata));
+
+ return platform_device_add(pd);
+}
+
static void __init gplugd_init(void)
{
mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
@@ -196,11 +238,17 @@ static void __init gplugd_init(void)
/* on-chip devices */
pxa168_add_uart(3);
+
pxa168_add_ssp(1);
pxa168_add_twsi(0, &i2c_info, ARRAY_AND_SIZE(gplugd_i2c_board_info));
pxa168_add_eth(&gplugd_eth_platform_data);
+
+ pxa168_add_ssp(2);
+
+ pxa168_add_spi(2, &pxa_ssp_master_info);
+ spi_register_board_info(gplugD_spi_board_info, ARRAY_SIZE(gplugD_spi_board_info));
}
MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
--
2017-09-03 20:23:12 +00:00
2.14.1
2016-05-02 01:47:12 +00:00