ARM: tegra: bonaire: add SPI support

added code to enable and initialize spi on
bonaire platform

Change-Id: I91bc591c8949c9c61512c60daa0794a95622d93c
Signed-off-by: Kunal Agrawal <kunala@nvidia.com>
Reviewed-on: http://git-master/r/205377
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venu Byravarasu <vbyravarasu@nvidia.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-bonaire.c b/arch/arm/mach-tegra/board-bonaire.c
index 92109711b4a3..b85507b77ea9 100644
--- a/arch/arm/mach-tegra/board-bonaire.c
+++ b/arch/arm/mach-tegra/board-bonaire.c
@@ -26,6 +26,8 @@
 #include <linux/clk.h>
 #include <linux/serial_8250.h>
 #include <linux/i2c.h>
+#include <linux/spi/spi.h>
+#include <linux/spi-tegra.h>
 #include <linux/i2c/panjit_ts.h>
 #include <linux/dma-mapping.h>
 #include <linux/delay.h>
@@ -216,6 +218,53 @@ static void bonaire_i2c_init(void)
 	platform_device_register(&tegra14_i2c_device1);
 }
 
+static struct platform_device *bonaire_spi_devices[] __initdata = {
+	&tegra11_spi_device4,
+};
+
+struct spi_clk_parent spi_parent_clk_bonaire[] = {
+	[0] = {.name = "pll_p"},
+#ifndef CONFIG_TEGRA_PLLM_RESTRICTED
+	[1] = {.name = "pll_m"},
+	[2] = {.name = "clk_m"},
+#else
+	[1] = {.name = "clk_m"},
+#endif
+};
+
+static struct tegra_spi_platform_data bonaire_spi_pdata = {
+	.is_dma_based           = true,
+	.max_dma_buffer         = 16 * 1024,
+	.is_clkon_always        = false,
+	.max_rate               = 25000000,
+};
+
+static void __init bonaire_spi_init(void)
+{
+	int i;
+	struct clk *c;
+	struct board_info board_info, display_board_info;
+
+	tegra_get_board_info(&board_info);
+	tegra_get_display_board_info(&display_board_info);
+
+	for (i = 0; i < ARRAY_SIZE(spi_parent_clk_bonaire); ++i) {
+		c = tegra_get_clock_by_name(spi_parent_clk_bonaire[i].name);
+		if (IS_ERR_OR_NULL(c)) {
+			pr_err("Not able to get the clock for %s\n",
+					spi_parent_clk_bonaire[i].name);
+		continue;
+		}
+		spi_parent_clk_bonaire[i].parent_clk = c;
+		spi_parent_clk_bonaire[i].fixed_clk_rate = clk_get_rate(c);
+	}
+	bonaire_spi_pdata.parent_clk_list = spi_parent_clk_bonaire;
+	bonaire_spi_pdata.parent_clk_count = ARRAY_SIZE(spi_parent_clk_bonaire);
+	tegra11_spi_device4.dev.platform_data = &bonaire_spi_pdata;
+	platform_add_devices(bonaire_spi_devices,
+			ARRAY_SIZE(bonaire_spi_devices));
+}
+
 #define GPIO_KEY(_id, _gpio, _iswake)		\
 	{					\
 		.code = _id,			\
@@ -566,6 +615,7 @@ static void __init tegra_bonaire_init(void)
 	bonaire_hs_uart_init();
 	bonaire_sdhci_init();
 	bonaire_i2c_init();
+	bonaire_spi_init();
 	bonaire_regulator_init();
 	bonaire_suspend_init();
 	bonaire_touch_init();