ARM: ep93xx: Add lm70 HWMON sensor to TS-72xx boards

Register the TI TMP122 (lm70) temperature sensor driver for the TS-72xx
boards.

Originaly from Florian Fainelli. Updated to the new spi-ep93xx chip select
method.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c
index eb9be7ef59fce1c490bb2b1baec09381805164a0..f386ebae0163cbbe00cf34776db7517a43ea2ac1 100644 (file)
--- a/arch/arm/mach-ep93xx/ts72xx.c
+++ b/arch/arm/mach-ep93xx/ts72xx.c
@@ -18,7 +18,10 @@
 #include <linux/io.h>
 #include <linux/mtd/rawnand.h>
 #include <linux/mtd/partitions.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_data/spi-ep93xx.h>
 
+#include <mach/gpio-ep93xx.h>
 #include <mach/hardware.h>
 
 #include <asm/mach-types.h>
@@ -230,6 +233,27 @@ static struct platform_device ts73xx_fpga_device = {
 
 #endif
 
+/*************************************************************************
+ * SPI Bus
+ *************************************************************************/
+static struct spi_board_info ts72xx_spi_devices[] __initdata = {
+       {
+               .modalias               = "tmp122",
+               .max_speed_hz           = 2 * 1000 * 1000,
+               .bus_num                = 0,
+               .chip_select            = 0,
+       },
+};
+
+static int ts72xx_spi_chipselects[] __initdata = {
+       EP93XX_GPIO_LINE_F(2),          /* DIO_17 */
+};
+
+static struct ep93xx_spi_info ts72xx_spi_info __initdata = {
+       .chipselect     = ts72xx_spi_chipselects,
+       .num_chipselect = ARRAY_SIZE(ts72xx_spi_chipselects),
+};
+
 static void __init ts72xx_init_machine(void)
 {
        ep93xx_init_devices();
@@ -242,6 +266,8 @@ static void __init ts72xx_init_machine(void)
        if (board_is_ts7300())
                platform_device_register(&ts73xx_fpga_device);
 #endif
+       ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices,
+                           ARRAY_SIZE(ts72xx_spi_devices));
 }
 
 MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")