forked from Minki/linux
ARM: dts: pxa3xx: add pincontrol helpers
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@free.fr>
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/* The pxa3xx skeleton simply augments the 2xx version */
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#include "pxa2xx.dtsi"
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#define MFP_PIN_PXA300(gpio) \
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((gpio <= 2) ? (0x00b4 + 4 * gpio) : \
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(gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \
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(gpio <= 98) ? (0x0400 + 4 * (gpio - 27)) : \
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(gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
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0)
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#define MFP_PIN_PXA310(gpio) \
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((gpio <= 2) ? (0x00b4 + 4 * gpio) : \
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(gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \
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(gpio <= 29) ? (0x0400 + 4 * (gpio - 27)) : \
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(gpio <= 98) ? (0x0418 + 4 * (gpio - 30)) : \
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(gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
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(gpio <= 262) ? 0 : \
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(gpio <= 268) ? (0x052c + 4 * (gpio - 263)) : \
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0)
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#define MFP_PIN_PXA320(gpio) \
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((gpio <= 4) ? (0x0124 + 4 * gpio) : \
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(gpio <= 9) ? (0x028c + 4 * (gpio - 5)) : \
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(gpio <= 10) ? (0x0458 + 4 * (gpio - 10)) : \
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(gpio <= 26) ? (0x02a0 + 4 * (gpio - 11)) : \
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(gpio <= 48) ? (0x0400 + 4 * (gpio - 27)) : \
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(gpio <= 62) ? (0x045c + 4 * (gpio - 49)) : \
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(gpio <= 73) ? (0x04b4 + 4 * (gpio - 63)) : \
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(gpio <= 98) ? (0x04f0 + 4 * (gpio - 74)) : \
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(gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
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0)
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/*
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* MFP Alternate functions for pins having a gpio.
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* Example of use: pinctrl-single,pins = < MFP_PIN_PXA310(21) MFP_AF1 >
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*/
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#define MFP_AF0 (0 << 0)
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#define MFP_AF1 (1 << 0)
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#define MFP_AF2 (2 << 0)
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#define MFP_AF3 (3 << 0)
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#define MFP_AF4 (4 << 0)
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#define MFP_AF5 (5 << 0)
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#define MFP_AF6 (6 << 0)
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/*
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* MFP drive strength functions for pins.
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* Example of use: pinctrl-single,drive-strength = MFP_DS03X;
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*/
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#define MFP_DSMSK (0x7 << 10)
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#define MFP_DS01X < (0x0 << 10) MFP_DSMSK >
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#define MFP_DS02X < (0x1 << 10) MFP_DSMSK >
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#define MFP_DS03X < (0x2 << 10) MFP_DSMSK >
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#define MFP_DS04X < (0x3 << 10) MFP_DSMSK >
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#define MFP_DS06X < (0x4 << 10) MFP_DSMSK >
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#define MFP_DS08X < (0x5 << 10) MFP_DSMSK >
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#define MFP_DS10X < (0x6 << 10) MFP_DSMSK >
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#define MFP_DS13X < (0x7 << 10) MFP_DSMSK >
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/*
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* MFP low power mode for pins.
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* Example of use:
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* pinctrl-single,low-power-mode = MFP_LPM(MFP_LPM_PULL_LOW|MFP_LPM_EDGE_FALL);
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*
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* Table that determines the low power modes outputs, with actual settings
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* used in parentheses for don't-care values. Except for the float output,
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* the configured driven and pulled levels match, so if there is a need for
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* non-LPM pulled output, the same configuration could probably be used.
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*
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* Output value sleep_oe_n sleep_data pullup_en pulldown_en pull_sel
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* (bit 7) (bit 8) (bit 14) (bit 13) (bit 15)
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*
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* Input 0 X(0) X(0) X(0) 0
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* Drive 0 0 0 0 X(1) 0
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* Drive 1 0 1 X(1) 0 0
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* Pull hi (1) 1 X(1) 1 0 0
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* Pull lo (0) 1 X(0) 0 1 0
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* Z (float) 1 X(0) 0 0 0
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*/
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#define MFP_LPM(x) < (x) MFP_LPM_MSK >
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#define MFP_LPM_MSK 0xe1f0
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#define MFP_LPM_INPUT 0x0000
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#define MFP_LPM_DRIVE_LOW 0x2000
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#define MFP_LPM_DRIVE_HIGH 0x4100
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#define MFP_LPM_PULL_LOW 0x2080
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#define MFP_LPM_PULL_HIGH 0x4180
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#define MFP_LPM_FLOAT 0x0080
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#define MFP_LPM_EDGE_NONE 0x0000
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#define MFP_LPM_EDGE_RISE 0x0010
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#define MFP_LPM_EDGE_FALL 0x0020
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#define MFP_LPM_EDGE_BOTH 0x0030
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/ {
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model = "Marvell PXA3xx familiy SoC";
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compatible = "marvell,pxa3xx";
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