ARM: tegra: clock: add clk_id_to_pll_id helper

This function allows to convert a device tree clock ID to PLL ID.

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # ASUS TF T30
Tested-by: Robert Eckelmann <longnoserob@gmail.com> # ASUS TF101 T20
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # HTC One X
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Tom <twarren@nvidia.com>

6 files changed, 194 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-tegra/clock.h b/arch/arm/include/asm/arch-tegra/clock.h
index 1dd5d0742c..2270501406 100644
--- a/arch/arm/include/asm/arch-tegra/clock.h
+++ b/arch/arm/include/asm/arch-tegra/clock.h
@@ -354,6 +354,14 @@ int get_periph_clock_source(enum periph_id periph_id,
  */
 enum periph_id clk_id_to_periph_id(int clk_id);
 
+/*
+ * Convert a device tree clock ID to our PLL ID.
+ *
+ * @param clk_id	Clock ID according to tegra device tree binding
+ * Return: clock ID, or CLOCK_ID_NONE if the clock ID is invalid
+ */
+enum clock_id clk_id_to_pll_id(int clk_id);
+
 /**
  * Set the output frequency you want for each PLL clock.
  * PLL output frequencies are programmed by setting their N, M and P values.
diff --git a/arch/arm/mach-tegra/tegra114/clock.c b/arch/arm/mach-tegra/tegra114/clock.c
index 143f86863f..15c2adc417 100644
--- a/arch/arm/mach-tegra/tegra114/clock.c
+++ b/arch/arm/mach-tegra/tegra114/clock.c
@@ -19,6 +19,8 @@
 #include <fdtdec.h>
 #include <linux/delay.h>
 
+#include <dt-bindings/clock/tegra114-car.h>
+
 /*
  * Clock types that we can use as a source. The Tegra114 has muxes for the
  * peripheral clocks, and in most cases there are four options for the clock
@@ -646,6 +648,41 @@ enum periph_id clk_id_to_periph_id(int clk_id)
 		return clk_id;
 	}
 }
+
+/*
+ * Convert a device tree clock ID to our PLL ID.
+ *
+ * @param clk_id	Clock ID according to tegra114 device tree binding
+ * Return: clock ID, or CLOCK_ID_NONE if the clock ID is invalid
+ */
+enum clock_id clk_id_to_pll_id(int clk_id)
+{
+	switch (clk_id) {
+	case TEGRA114_CLK_PLL_C:
+		return CLOCK_ID_CGENERAL;
+	case TEGRA114_CLK_PLL_M:
+		return CLOCK_ID_MEMORY;
+	case TEGRA114_CLK_PLL_P:
+		return CLOCK_ID_PERIPH;
+	case TEGRA114_CLK_PLL_A:
+		return CLOCK_ID_AUDIO;
+	case TEGRA114_CLK_PLL_U:
+		return CLOCK_ID_USB;
+	case TEGRA114_CLK_PLL_D:
+	case TEGRA114_CLK_PLL_D_OUT0:
+		return CLOCK_ID_DISPLAY;
+	case TEGRA114_CLK_PLL_X:
+		return CLOCK_ID_XCPU;
+	case TEGRA114_CLK_PLL_E_OUT0:
+		return CLOCK_ID_EPCI;
+	case TEGRA114_CLK_CLK_32K:
+		return CLOCK_ID_32KHZ;
+	case TEGRA114_CLK_CLK_M:
+		return CLOCK_ID_CLK_M;
+	default:
+		return CLOCK_ID_NONE;
+	}
+}
 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
 
 void clock_early_init(void)
diff --git a/arch/arm/mach-tegra/tegra124/clock.c b/arch/arm/mach-tegra/tegra124/clock.c
index da38b26c27..415ba15e5d 100644
--- a/arch/arm/mach-tegra/tegra124/clock.c
+++ b/arch/arm/mach-tegra/tegra124/clock.c
@@ -19,6 +19,9 @@
 #include <fdtdec.h>
 #include <linux/delay.h>
 
+#include <dt-bindings/clock/tegra124-car.h>
+#include <dt-bindings/clock/tegra124-car-common.h>
+
 /*
  * Clock types that we can use as a source. The Tegra124 has muxes for the
  * peripheral clocks, and in most cases there are four options for the clock
@@ -826,6 +829,41 @@ enum periph_id clk_id_to_periph_id(int clk_id)
 		return clk_id;
 	}
 }
+
+/*
+ * Convert a device tree clock ID to our PLL ID.
+ *
+ * @param clk_id	Clock ID according to tegra124 device tree binding
+ * Return: clock ID, or CLOCK_ID_NONE if the clock ID is invalid
+ */
+enum clock_id clk_id_to_pll_id(int clk_id)
+{
+	switch (clk_id) {
+	case TEGRA124_CLK_PLL_C:
+		return CLOCK_ID_CGENERAL;
+	case TEGRA124_CLK_PLL_M:
+		return CLOCK_ID_MEMORY;
+	case TEGRA124_CLK_PLL_P:
+		return CLOCK_ID_PERIPH;
+	case TEGRA124_CLK_PLL_A:
+		return CLOCK_ID_AUDIO;
+	case TEGRA124_CLK_PLL_U:
+		return CLOCK_ID_USB;
+	case TEGRA124_CLK_PLL_D:
+	case TEGRA124_CLK_PLL_D_OUT0:
+		return CLOCK_ID_DISPLAY;
+	case TEGRA124_CLK_PLL_X:
+		return CLOCK_ID_XCPU;
+	case TEGRA124_CLK_PLL_E:
+		return CLOCK_ID_EPCI;
+	case TEGRA124_CLK_CLK_32K:
+		return CLOCK_ID_32KHZ;
+	case TEGRA124_CLK_CLK_M:
+		return CLOCK_ID_CLK_M;
+	default:
+		return CLOCK_ID_NONE;
+	}
+}
 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
 
 void clock_early_init(void)
diff --git a/arch/arm/mach-tegra/tegra20/clock.c b/arch/arm/mach-tegra/tegra20/clock.c
index 0316073d1a..593622bfdc 100644
--- a/arch/arm/mach-tegra/tegra20/clock.c
+++ b/arch/arm/mach-tegra/tegra20/clock.c
@@ -20,6 +20,8 @@
 #include <fdtdec.h>
 #include <linux/delay.h>
 
+#include <dt-bindings/clock/tegra20-car.h>
+
 /*
  * Clock types that we can use as a source. The Tegra20 has muxes for the
  * peripheral clocks, and in most cases there are four options for the clock
@@ -578,6 +580,41 @@ enum periph_id clk_id_to_periph_id(int clk_id)
 		return clk_id;
 	}
 }
+
+/*
+ * Convert a device tree clock ID to our PLL ID.
+ *
+ * @param clk_id	Clock ID according to tegra20 device tree binding
+ * Return: clock ID, or CLOCK_ID_NONE if the clock ID is invalid
+ */
+enum clock_id clk_id_to_pll_id(int clk_id)
+{
+	switch (clk_id) {
+	case TEGRA20_CLK_PLL_C:
+		return CLOCK_ID_CGENERAL;
+	case TEGRA20_CLK_PLL_M:
+		return CLOCK_ID_MEMORY;
+	case TEGRA20_CLK_PLL_P:
+		return CLOCK_ID_PERIPH;
+	case TEGRA20_CLK_PLL_A:
+		return CLOCK_ID_AUDIO;
+	case TEGRA20_CLK_PLL_U:
+		return CLOCK_ID_USB;
+	case TEGRA20_CLK_PLL_D:
+	case TEGRA20_CLK_PLL_D_OUT0:
+		return CLOCK_ID_DISPLAY;
+	case TEGRA20_CLK_PLL_X:
+		return CLOCK_ID_XCPU;
+	case TEGRA20_CLK_PLL_E:
+		return CLOCK_ID_EPCI;
+	case TEGRA20_CLK_CLK_32K:
+		return CLOCK_ID_32KHZ;
+	case TEGRA20_CLK_CLK_M:
+		return CLOCK_ID_CLK_M;
+	default:
+		return CLOCK_ID_NONE;
+	}
+}
 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
 
 void clock_early_init(void)
diff --git a/arch/arm/mach-tegra/tegra210/clock.c b/arch/arm/mach-tegra/tegra210/clock.c
index 330753f2ad..76fbfef580 100644
--- a/arch/arm/mach-tegra/tegra210/clock.c
+++ b/arch/arm/mach-tegra/tegra210/clock.c
@@ -22,6 +22,8 @@
 #include <linux/bitops.h>
 #include <linux/delay.h>
 
+#include <dt-bindings/clock/tegra210-car.h>
+
 /*
  * Clock types that we can use as a source. The Tegra210 has muxes for the
  * peripheral clocks, and in most cases there are four options for the clock
@@ -914,6 +916,41 @@ enum periph_id clk_id_to_periph_id(int clk_id)
 		return clk_id;
 	}
 }
+
+/*
+ * Convert a device tree clock ID to our PLL ID.
+ *
+ * @param clk_id	Clock ID according to tegra210 device tree binding
+ * Return: clock ID, or CLOCK_ID_NONE if the clock ID is invalid
+ */
+enum clock_id clk_id_to_pll_id(int clk_id)
+{
+	switch (clk_id) {
+	case TEGRA210_CLK_PLL_C:
+		return CLOCK_ID_CGENERAL;
+	case TEGRA210_CLK_PLL_M:
+		return CLOCK_ID_MEMORY;
+	case TEGRA210_CLK_PLL_P:
+		return CLOCK_ID_PERIPH;
+	case TEGRA210_CLK_PLL_A:
+		return CLOCK_ID_AUDIO;
+	case TEGRA210_CLK_PLL_U:
+		return CLOCK_ID_USB;
+	case TEGRA210_CLK_PLL_D:
+	case TEGRA210_CLK_PLL_D_OUT0:
+		return CLOCK_ID_DISPLAY;
+	case TEGRA210_CLK_PLL_X:
+		return CLOCK_ID_XCPU;
+	case TEGRA210_CLK_PLL_E:
+		return CLOCK_ID_EPCI;
+	case TEGRA210_CLK_CLK_32K:
+		return CLOCK_ID_32KHZ;
+	case TEGRA210_CLK_CLK_M:
+		return CLOCK_ID_CLK_M;
+	default:
+		return CLOCK_ID_NONE;
+	}
+}
 #endif /* CONFIG_OF_CONTROL */
 
 /*
diff --git a/arch/arm/mach-tegra/tegra30/clock.c b/arch/arm/mach-tegra/tegra30/clock.c
index e5c2fd542c..dcdd0d0978 100644
--- a/arch/arm/mach-tegra/tegra30/clock.c
+++ b/arch/arm/mach-tegra/tegra30/clock.c
@@ -19,6 +19,8 @@
 #include <fdtdec.h>
 #include <linux/delay.h>
 
+#include <dt-bindings/clock/tegra30-car.h>
+
 /*
  * Clock types that we can use as a source. The Tegra30 has muxes for the
  * peripheral clocks, and in most cases there are four options for the clock
@@ -628,6 +630,41 @@ enum periph_id clk_id_to_periph_id(int clk_id)
 		return clk_id;
 	}
 }
+
+/*
+ * Convert a device tree clock ID to our PLL ID.
+ *
+ * @param clk_id	Clock ID according to tegra30 device tree binding
+ * Return: clock ID, or CLOCK_ID_NONE if the clock ID is invalid
+ */
+enum clock_id clk_id_to_pll_id(int clk_id)
+{
+	switch (clk_id) {
+	case TEGRA30_CLK_PLL_C:
+		return CLOCK_ID_CGENERAL;
+	case TEGRA30_CLK_PLL_M:
+		return CLOCK_ID_MEMORY;
+	case TEGRA30_CLK_PLL_P:
+		return CLOCK_ID_PERIPH;
+	case TEGRA30_CLK_PLL_A:
+		return CLOCK_ID_AUDIO;
+	case TEGRA30_CLK_PLL_U:
+		return CLOCK_ID_USB;
+	case TEGRA30_CLK_PLL_D:
+	case TEGRA30_CLK_PLL_D_OUT0:
+		return CLOCK_ID_DISPLAY;
+	case TEGRA30_CLK_PLL_X:
+		return CLOCK_ID_XCPU;
+	case TEGRA30_CLK_PLL_E:
+		return CLOCK_ID_EPCI;
+	case TEGRA30_CLK_CLK_32K:
+		return CLOCK_ID_32KHZ;
+	case TEGRA30_CLK_CLK_M:
+		return CLOCK_ID_CLK_M;
+	default:
+		return CLOCK_ID_NONE;
+	}
+}
 #endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
 
 void clock_early_init(void)