stm32mp1: shared resources: count GPIOZ bank pins
Get number of pins in the GPIOZ bank with helper function fdt_get_gpio_bank_pin_count(). Save the value in RAM to prevent parsing the FDT several time for the same information. Change-Id: Ie68e300804461ffce09914100a7d2962116023b5 Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
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@ -4,8 +4,45 @@
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <stdint.h>
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#include <platform_def.h>
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#include <common/debug.h>
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#include <drivers/st/stm32_gpio.h>
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#include <stm32mp_shared_resources.h>
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/* GPIOZ pin count is saved in RAM to prevent parsing FDT several times */
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static int8_t gpioz_nbpin = -1;
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static unsigned int get_gpio_nbpin(unsigned int bank)
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{
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if (bank != GPIO_BANK_Z) {
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int count = fdt_get_gpio_bank_pin_count(bank);
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assert((count >= 0) || (count <= (GPIO_PIN_MAX + 1)));
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return (unsigned int)count;
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}
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if (gpioz_nbpin < 0) {
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int count = fdt_get_gpio_bank_pin_count(GPIO_BANK_Z);
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assert((count == 0) || (count == STM32MP_GPIOZ_PIN_MAX_COUNT));
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gpioz_nbpin = count;
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}
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return (unsigned int)gpioz_nbpin;
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}
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static unsigned int __unused get_gpioz_nbpin(void)
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{
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return get_gpio_nbpin(GPIO_BANK_Z);
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}
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/* Currently allow full access by non-secure to platform clock services */
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bool stm32mp_nsec_can_access_clock(unsigned long clock_id)
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{
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