0001-nRF24L01P-board-setup-code-for-raspberry-pi.patch

From b948e594ca42d3d8c3d070abeb1744f7e1fbf1fc Mon Sep 17 00:00:00 2001
From: Daniel Hilst SellI <danielhilst@gmail.com>
Date: Fri, 8 Aug 2014 16:12:02 -0300
Subject: [PATCH] nRF24L01P board setup code for raspberry pi

---
 arch/arm/mach-bcm2708/bcm2708.c | 41 +++++++++++++++++++++--------------------
 include/linux/spi/nRF24L01P.h   | 11 +++++++++++
 2 files changed, 32 insertions(+), 20 deletions(-)
 create mode 100644 include/linux/spi/nRF24L01P.h

diff --git a/arch/arm/mach-bcm2708/bcm2708.c b/arch/arm/mach-bcm2708/bcm2708.c
index 50f4f0a..8e9db7f 100644
--- a/arch/arm/mach-bcm2708/bcm2708.c
+++ b/arch/arm/mach-bcm2708/bcm2708.c
@@ -33,6 +33,8 @@
 #include <linux/module.h>
 #include <linux/spi/spi.h>
 #include <linux/w1-gpio.h>
+#include <linux/spi/nRF24L01P.h>
+#include <linux/gpio.h>

 #include <linux/version.h>
 #include <linux/clkdev.h>
@@ -586,23 +588,24 @@ static struct platform_device bcm2708_spi_device = {
    .resource = bcm2708_spi_resources,
 };

-#ifdef CONFIG_BCM2708_SPIDEV
-static struct spi_board_info bcm2708_spi_devices[] = {
-   {
-       .modalias = "spidev",
-       .max_speed_hz = 500000,
-       .bus_num = 0,
-       .chip_select = 0,
-       .mode = SPI_MODE_0,
-   }, {
-       .modalias = "spidev",
-       .max_speed_hz = 500000,
-       .bus_num = 0,
-       .chip_select = 1,
-       .mode = SPI_MODE_0,
-   }
+#define NRF24L01P_IRQ_GPIO 24
+#define NRF24L01P_CE_GPIO  25
+
+static struct nRF24L01P_platform_data rf24_config = {
+        .gpio_ce = NRF24L01P_CE_GPIO,
+        .gpio_irq = NRF24L01P_IRQ_GPIO,
+};
+
+static struct spi_board_info bcm2708_spi_rf24[] __initdata = {
+        {
+                .modalias = "nRF24L01P", /* nRF24L01+ */
+                .max_speed_hz = 8000000,
+                .bus_num = 0,
+                .chip_select = 0,
+                .platform_data = &rf24_config,
+                .mode = SPI_MODE_0,
+        },
 };
-#endif

 static struct resource bcm2708_bsc0_resources[] = {
    {
@@ -787,10 +790,8 @@ void __init bcm2708_init(void)
    system_rev = boardrev;
    system_serial_low = serial;

-#ifdef CONFIG_BCM2708_SPIDEV
-   spi_register_board_info(bcm2708_spi_devices,
-           ARRAY_SIZE(bcm2708_spi_devices));
-#endif
+   spi_register_board_info(bcm2708_spi_rf24,
+           ARRAY_SIZE(bcm2708_spi_rf24));
 }

 #define TIMER_PERIOD DIV_ROUND_CLOSEST(STC_FREQ_HZ, HZ)
diff --git a/include/linux/spi/nRF24L01P.h b/include/linux/spi/nRF24L01P.h
new file mode 100644
index 0000000..3be5a9d
--- /dev/null
+++ b/include/linux/spi/nRF24L01P.h
@@ -0,0 +1,11 @@
+#ifndef __LINUX_SPI_NRF24L01P_H
+#define __LINUX_SPI_NRF24L01P_H
+
+/* linux/spi/nRF24L01P */
+
+struct nRF24L01P_platform_data {
+        unsigned int gpio_irq;
+        unsigned int gpio_ce;            /* Chip Enable */
+};
+
+#endif
--
2.0.3