The various pxa3xx variants have a really weird pin scheme assignement,
when you want the pin number relative to a known gpio pin.
This change adds the various tools to ease up writing the pinmux and
pinconf devicetree parts.
Signed-off-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
arch/arm/boot/dts/pxa3xx.dtsi | 90 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 90 insertions(+)
diff --git a/arch/arm/boot/dts/pxa3xx.dtsi b/arch/arm/boot/dts/pxa3xx.dtsi
index 6995b11ce042..9d6f3aacedb7 100644
--- a/arch/arm/boot/dts/pxa3xx.dtsi
+++ b/arch/arm/boot/dts/pxa3xx.dtsi
@@ -1,6 +1,96 @@
/* The pxa3xx skeleton simply augments the 2xx version */
#include "pxa2xx.dtsi"
+#define MFP_PIN_PXA300(gpio) \
+ ((gpio <= 2) ? (0x00b4 + 4 * gpio) : \
+ (gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \
+ (gpio <= 98) ? (0x0400 + 4 * (gpio - 27)) : \
+ (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
+ 0)
+
+#define MFP_PIN_PXA310(gpio) \
+ ((gpio <= 2) ? (0x00b4 + 4 * gpio) : \
+ (gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \
+ (gpio <= 29) ? (0x0400 + 4 * (gpio - 27)) : \
+ (gpio <= 98) ? (0x0418 + 4 * (gpio - 30)) : \
+ (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
+ (gpio <= 262) ? 0 : \
+ (gpio <= 268) ? (0x052c + 4 * (gpio - 263)) : \
+ 0)
+
+#define MFP_PIN_PXA320(gpio) \
+ ((gpio <= 4) ? (0x0124 + 4 * gpio) : \
+ (gpio <= 9) ? (0x028c + 4 * (gpio - 5)) : \
+ (gpio <= 10) ? (0x0458 + 4 * (gpio - 10)) : \
+ (gpio <= 26) ? (0x02a0 + 4 * (gpio - 11)) : \
+ (gpio <= 48) ? (0x0400 + 4 * (gpio - 27)) : \
+ (gpio <= 62) ? (0x045c + 4 * (gpio - 49)) : \
+ (gpio <= 73) ? (0x04b4 + 4 * (gpio - 63)) : \
+ (gpio <= 98) ? (0x04f0 + 4 * (gpio - 74)) : \
+ (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
+ 0)
+
+/*
+ * MFP Alternate functions for pins having a gpio.
+ * Example of use: pinctrl-single,pins = < MFP_PIN_PXA310(21) MFP_AF1 >
+ */
+#define MFP_AF0 (0 << 0)
+#define MFP_AF1 (1 << 0)
+#define MFP_AF2 (2 << 0)
+#define MFP_AF3 (3 << 0)
+#define MFP_AF4 (4 << 0)
+#define MFP_AF5 (5 << 0)
+#define MFP_AF6 (6 << 0)
+
+/*
+ * MFP drive strength functions for pins.
+ * Example of use: pinctrl-single,drive-strength = MFP_DS03X;
+ */
+#define MFP_DSMSK (0x7 << 10)
+#define MFP_DS01X < (0x0 << 10) MFP_DSMSK >
+#define MFP_DS02X < (0x1 << 10) MFP_DSMSK >
+#define MFP_DS03X < (0x2 << 10) MFP_DSMSK >
+#define MFP_DS04X < (0x3 << 10) MFP_DSMSK >
+#define MFP_DS06X < (0x4 << 10) MFP_DSMSK >
+#define MFP_DS08X < (0x5 << 10) MFP_DSMSK >
+#define MFP_DS10X < (0x6 << 10) MFP_DSMSK >
+#define MFP_DS13X < (0x7 << 10) MFP_DSMSK >
+
+/*
+ * MFP low power mode for pins.
+ * Example of use:
+ * pinctrl-single,low-power-mode = MFP_LPM(MFP_LPM_PULL_LOW|MFP_LPM_EDGE_FALL);
+ *
+ * Table that determines the low power modes outputs, with actual settings
+ * used in parentheses for don't-care values. Except for the float output,
+ * the configured driven and pulled levels match, so if there is a need for
+ * non-LPM pulled output, the same configuration could probably be used.
+ *
+ * Output value sleep_oe_n sleep_data pullup_en pulldown_en pull_sel
+ * (bit 7) (bit 8) (bit 14) (bit 13) (bit 15)
+ *
+ * Input 0 X(0) X(0) X(0) 0
+ * Drive 0 0 0 0 X(1) 0
+ * Drive 1 0 1 X(1) 0 0
+ * Pull hi (1) 1 X(1) 1 0 0
+ * Pull lo (0) 1 X(0) 0 1 0
+ * Z (float) 1 X(0) 0 0 0
+ */
+#define MFP_LPM(x) < (x) MFP_LPM_MSK >
+
+#define MFP_LPM_MSK 0xe1f0
+#define MFP_LPM_INPUT 0x0000
+#define MFP_LPM_DRIVE_LOW 0x2000
+#define MFP_LPM_DRIVE_HIGH 0x4100
+#define MFP_LPM_PULL_LOW 0x2080
+#define MFP_LPM_PULL_HIGH 0x4180
+#define MFP_LPM_FLOAT 0x0080
+
+#define MFP_LPM_EDGE_NONE 0x0000
+#define MFP_LPM_EDGE_RISE 0x0010
+#define MFP_LPM_EDGE_FALL 0x0020
+#define MFP_LPM_EDGE_BOTH 0x0030
+
/ {
model = "Marvell PXA3xx familiy SoC";
compatible = "marvell,pxa3xx";
--
2.1.4
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