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Davinci: Table driven pinmux configuration
Davinci: Table driven pinmux configuration Add code to allow pinmux_config tables to be grouped and configured as a single resource. This removes multiple calls to the pinmux configuration code from board_init and allows pinmuxes to be individually configured and added by data manipulation only. All related #ifdefs can the be removed from board_init code and since the compiler optimises away statics, #ifdefs can be reduced in the data definitions as well. Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
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@ -155,3 +155,34 @@ int davinci_configure_pin_mux(const struct pinmux_config *pins,
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return 0;
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return 0;
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}
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}
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/*
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* Configure multiple pinmux resources.
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*
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* Takes an pinmux_resource array of pinmux_config and pin counts:
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*
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* const struct pinmux_resource pinmuxes[] = {
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* PINMUX_ITEM(uart_pins),
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* PINMUX_ITEM(i2c_pins),
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* };
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*
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* The number of items in the array must be passed (ARRAY_SIZE can provide
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* this value conveniently).
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*
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* Each item entry is configured in the defined order. If configuration
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* of any item fails, -1 is returned and none of the following items are
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* configured. On success, 0 is returned.
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*/
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int davinci_configure_pin_mux_items(const struct pinmux_resource *item,
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const int n_items)
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{
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int i;
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for (i = 0; i < n_items; i++) {
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if (davinci_configure_pin_mux(item[i].pins,
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item[i].n_pins) != 0)
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return -1;
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}
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return 0;
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}
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@ -34,8 +34,21 @@ struct pinmux_config {
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unsigned char field; /* field number */
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unsigned char field; /* field number */
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};
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};
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/* pin table definition */
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struct pinmux_resource {
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const struct pinmux_config *pins;
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const int n_pins;
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};
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#define PINMUX_ITEM(item) { \
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.pins = item, \
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.n_pins = ARRAY_SIZE(item) \
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}
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int dvevm_read_mac_address(uint8_t *buf);
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int dvevm_read_mac_address(uint8_t *buf);
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void dv_configure_mac_address(uint8_t *rom_enetaddr);
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void dv_configure_mac_address(uint8_t *rom_enetaddr);
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int davinci_configure_pin_mux(const struct pinmux_config *pins, int n_pins);
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int davinci_configure_pin_mux(const struct pinmux_config *pins, int n_pins);
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int davinci_configure_pin_mux_items(const struct pinmux_resource *item,
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int n_items);
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#endif /* __MISC_H */
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#endif /* __MISC_H */
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