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@@ -1,5 +1,5 @@
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/*
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- * Memory Setup stuff - taken from blob memsetup.S
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+ * Copyright (C) 2013 Bo Shen <voice.shen@atmel.com>
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*
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* Copyright (C) 2009 Jens Scharsig (js_at_ng@scharsoft.de)
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*
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@@ -8,16 +8,6 @@
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* SPDX-License-Identifier: GPL-2.0+
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*/
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-/*
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- * WARNING:
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- *
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- * As the code is right now, it expects all PIO ports A,B,C,...
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- * to be evenly spaced in the memory map:
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- * ATMEL_BASE_PIOA + port * sizeof at91pio_t
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- * This might not necessaryly be true in future Atmel SoCs.
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- * This code should be fixed to use a pointer array to the ports.
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- */
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-
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#include <config.h>
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#include <common.h>
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#include <asm/io.h>
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@@ -25,19 +15,42 @@
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#include <asm/arch/hardware.h>
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#include <asm/arch/at91_pio.h>
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+static struct at91_port *at91_pio_get_port(unsigned port)
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+{
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+ switch (port) {
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+ case AT91_PIO_PORTA:
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+ return (struct at91_port *)ATMEL_BASE_PIOA;
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+ case AT91_PIO_PORTB:
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+ return (struct at91_port *)ATMEL_BASE_PIOB;
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+ case AT91_PIO_PORTC:
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+ return (struct at91_port *)ATMEL_BASE_PIOC;
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+#if (ATMEL_PIO_PORTS > 3)
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+ case AT91_PIO_PORTD:
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+ return (struct at91_port *)ATMEL_BASE_PIOD;
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+#if (ATMEL_PIO_PORTS > 4)
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+ case AT91_PIO_PORTE:
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+ return (struct at91_port *)ATMEL_BASE_PIOE;
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+#endif
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+#endif
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+ default:
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+ return NULL;
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+ }
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+}
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+
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int at91_set_pio_pullup(unsigned port, unsigned pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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if (use_pullup)
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- writel(1 << pin, &pio->port[port].puer);
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+ writel(1 << pin, &at91_port->puer);
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else
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- writel(1 << pin, &pio->port[port].pudr);
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- writel(mask, &pio->port[port].per);
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+ writel(1 << pin, &at91_port->pudr);
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+ writel(mask, &at91_port->per);
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}
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+
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return 0;
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}
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@@ -46,15 +59,16 @@ int at91_set_pio_pullup(unsigned port, unsigned pin, int use_pullup)
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*/
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int at91_set_pio_periph(unsigned port, unsigned pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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+ writel(mask, &at91_port->idr);
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at91_set_pio_pullup(port, pin, use_pullup);
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- writel(mask, &pio->port[port].per);
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+ writel(mask, &at91_port->per);
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}
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+
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return 0;
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}
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@@ -63,23 +77,24 @@ int at91_set_pio_periph(unsigned port, unsigned pin, int use_pullup)
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*/
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int at91_set_a_periph(unsigned port, unsigned pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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+ writel(mask, &at91_port->idr);
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at91_set_pio_pullup(port, pin, use_pullup);
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#if defined(CPU_HAS_PIO3)
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- writel(readl(&pio->port[port].abcdsr1) & ~mask,
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- &pio->port[port].abcdsr1);
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- writel(readl(&pio->port[port].abcdsr2) & ~mask,
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- &pio->port[port].abcdsr2);
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+ writel(readl(&at91_port->abcdsr1) & ~mask,
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+ &at91_port->abcdsr1);
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+ writel(readl(&at91_port->abcdsr2) & ~mask,
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+ &at91_port->abcdsr2);
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#else
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- writel(mask, &pio->port[port].asr);
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+ writel(mask, &at91_port->asr);
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#endif
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- writel(mask, &pio->port[port].pdr);
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+ writel(mask, &at91_port->pdr);
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}
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+
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return 0;
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}
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@@ -88,23 +103,24 @@ int at91_set_a_periph(unsigned port, unsigned pin, int use_pullup)
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*/
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int at91_set_b_periph(unsigned port, unsigned pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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+ writel(mask, &at91_port->idr);
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at91_set_pio_pullup(port, pin, use_pullup);
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#if defined(CPU_HAS_PIO3)
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- writel(readl(&pio->port[port].abcdsr1) | mask,
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- &pio->port[port].abcdsr1);
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- writel(readl(&pio->port[port].abcdsr2) & ~mask,
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- &pio->port[port].abcdsr2);
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+ writel(readl(&at91_port->abcdsr1) | mask,
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+ &at91_port->abcdsr1);
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+ writel(readl(&at91_port->abcdsr2) & ~mask,
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+ &at91_port->abcdsr2);
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#else
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- writel(mask, &pio->port[port].bsr);
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+ writel(mask, &at91_port->bsr);
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#endif
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- writel(mask, &pio->port[port].pdr);
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+ writel(mask, &at91_port->pdr);
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}
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+
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return 0;
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}
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@@ -114,19 +130,20 @@ int at91_set_b_periph(unsigned port, unsigned pin, int use_pullup)
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*/
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int at91_set_c_periph(unsigned port, unsigned pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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+ writel(mask, &at91_port->idr);
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at91_set_pio_pullup(port, pin, use_pullup);
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- writel(readl(&pio->port[port].abcdsr1) & ~mask,
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- &pio->port[port].abcdsr1);
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- writel(readl(&pio->port[port].abcdsr2) | mask,
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- &pio->port[port].abcdsr2);
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- writel(mask, &pio->port[port].pdr);
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+ writel(readl(&at91_port->abcdsr1) & ~mask,
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+ &at91_port->abcdsr1);
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+ writel(readl(&at91_port->abcdsr2) | mask,
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+ &at91_port->abcdsr2);
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+ writel(mask, &at91_port->pdr);
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}
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+
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return 0;
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}
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@@ -135,19 +152,20 @@ int at91_set_c_periph(unsigned port, unsigned pin, int use_pullup)
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*/
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int at91_set_d_periph(unsigned port, unsigned pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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+ writel(mask, &at91_port->idr);
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at91_set_pio_pullup(port, pin, use_pullup);
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- writel(readl(&pio->port[port].abcdsr1) | mask,
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- &pio->port[port].abcdsr1);
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- writel(readl(&pio->port[port].abcdsr2) | mask,
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- &pio->port[port].abcdsr2);
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- writel(mask, &pio->port[port].pdr);
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+ writel(readl(&at91_port->abcdsr1) | mask,
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+ &at91_port->abcdsr1);
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+ writel(readl(&at91_port->abcdsr2) | mask,
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+ &at91_port->abcdsr2);
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+ writel(mask, &at91_port->pdr);
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}
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+
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return 0;
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}
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#endif
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@@ -158,16 +176,17 @@ int at91_set_d_periph(unsigned port, unsigned pin, int use_pullup)
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*/
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int at91_set_pio_input(unsigned port, u32 pin, int use_pullup)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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+ writel(mask, &at91_port->idr);
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at91_set_pio_pullup(port, pin, use_pullup);
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- writel(mask, &pio->port[port].odr);
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- writel(mask, &pio->port[port].per);
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+ writel(mask, &at91_port->odr);
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+ writel(mask, &at91_port->per);
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}
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+
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return 0;
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}
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@@ -177,20 +196,21 @@ int at91_set_pio_input(unsigned port, u32 pin, int use_pullup)
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*/
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int at91_set_pio_output(unsigned port, u32 pin, int value)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].idr);
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- writel(mask, &pio->port[port].pudr);
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+ writel(mask, &at91_port->idr);
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+ writel(mask, &at91_port->pudr);
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if (value)
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- writel(mask, &pio->port[port].sodr);
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+ writel(mask, &at91_port->sodr);
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else
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- writel(mask, &pio->port[port].codr);
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- writel(mask, &pio->port[port].oer);
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- writel(mask, &pio->port[port].per);
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+ writel(mask, &at91_port->codr);
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+ writel(mask, &at91_port->oer);
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+ writel(mask, &at91_port->per);
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}
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+
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return 0;
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}
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@@ -199,20 +219,21 @@ int at91_set_pio_output(unsigned port, u32 pin, int value)
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*/
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int at91_set_pio_deglitch(unsigned port, unsigned pin, int is_on)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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if (is_on) {
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#if defined(CPU_HAS_PIO3)
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- writel(mask, &pio->port[port].ifscdr);
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+ writel(mask, &at91_port->ifscdr);
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#endif
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- writel(mask, &pio->port[port].ifer);
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+ writel(mask, &at91_port->ifer);
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} else {
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- writel(mask, &pio->port[port].ifdr);
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+ writel(mask, &at91_port->ifdr);
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}
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}
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+
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return 0;
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}
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@@ -222,19 +243,20 @@ int at91_set_pio_deglitch(unsigned port, unsigned pin, int is_on)
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*/
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int at91_set_pio_debounce(unsigned port, unsigned pin, int is_on, int div)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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if (is_on) {
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- writel(mask, &pio->port[port].ifscer);
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- writel(div & PIO_SCDR_DIV, &pio->port[port].scdr);
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- writel(mask, &pio->port[port].ifer);
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+ writel(mask, &at91_port->ifscer);
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+ writel(div & PIO_SCDR_DIV, &at91_port->scdr);
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+ writel(mask, &at91_port->ifer);
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} else {
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- writel(mask, &pio->port[port].ifdr);
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+ writel(mask, &at91_port->ifdr);
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}
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}
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+
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return 0;
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}
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@@ -244,17 +266,18 @@ int at91_set_pio_debounce(unsigned port, unsigned pin, int is_on, int div)
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*/
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int at91_set_pio_pulldown(unsigned port, unsigned pin, int is_on)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
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- u32 mask;
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+ struct at91_port *at91_port = at91_pio_get_port(port);
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+ u32 mask;
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- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
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+ if (at91_port && (pin < 32)) {
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mask = 1 << pin;
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- writel(mask, &pio->port[port].pudr);
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+ writel(mask, &at91_port->pudr);
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if (is_on)
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- writel(mask, &pio->port[port].ppder);
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+ writel(mask, &at91_port->ppder);
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else
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- writel(mask, &pio->port[port].ppddr);
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+ writel(mask, &at91_port->ppddr);
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}
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+
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return 0;
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}
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@@ -263,14 +286,15 @@ int at91_set_pio_pulldown(unsigned port, unsigned pin, int is_on)
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*/
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int at91_set_pio_disable_schmitt_trig(unsigned port, unsigned pin)
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{
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- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
|
|
|
- u32 mask;
|
|
|
+ struct at91_port *at91_port = at91_pio_get_port(port);
|
|
|
+ u32 mask;
|
|
|
|
|
|
- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
|
|
|
+ if (at91_port && (pin < 32)) {
|
|
|
mask = 1 << pin;
|
|
|
- writel(readl(&pio->port[port].schmitt) | mask,
|
|
|
- &pio->port[port].schmitt);
|
|
|
+ writel(readl(&at91_port->schmitt) | mask,
|
|
|
+ &at91_port->schmitt);
|
|
|
}
|
|
|
+
|
|
|
return 0;
|
|
|
}
|
|
|
#endif
|
|
@@ -281,16 +305,17 @@ int at91_set_pio_disable_schmitt_trig(unsigned port, unsigned pin)
|
|
|
*/
|
|
|
int at91_set_pio_multi_drive(unsigned port, unsigned pin, int is_on)
|
|
|
{
|
|
|
- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
|
|
|
- u32 mask;
|
|
|
+ struct at91_port *at91_port = at91_pio_get_port(port);
|
|
|
+ u32 mask;
|
|
|
|
|
|
- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
|
|
|
+ if (at91_port && (pin < 32)) {
|
|
|
mask = 1 << pin;
|
|
|
if (is_on)
|
|
|
- writel(mask, &pio->port[port].mder);
|
|
|
+ writel(mask, &at91_port->mder);
|
|
|
else
|
|
|
- writel(mask, &pio->port[port].mddr);
|
|
|
+ writel(mask, &at91_port->mddr);
|
|
|
}
|
|
|
+
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
@@ -299,16 +324,17 @@ int at91_set_pio_multi_drive(unsigned port, unsigned pin, int is_on)
|
|
|
*/
|
|
|
int at91_set_pio_value(unsigned port, unsigned pin, int value)
|
|
|
{
|
|
|
- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
|
|
|
- u32 mask;
|
|
|
+ struct at91_port *at91_port = at91_pio_get_port(port);
|
|
|
+ u32 mask;
|
|
|
|
|
|
- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
|
|
|
+ if (at91_port && (pin < 32)) {
|
|
|
mask = 1 << pin;
|
|
|
if (value)
|
|
|
- writel(mask, &pio->port[port].sodr);
|
|
|
+ writel(mask, &at91_port->sodr);
|
|
|
else
|
|
|
- writel(mask, &pio->port[port].codr);
|
|
|
+ writel(mask, &at91_port->codr);
|
|
|
}
|
|
|
+
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
@@ -317,13 +343,56 @@ int at91_set_pio_value(unsigned port, unsigned pin, int value)
|
|
|
*/
|
|
|
int at91_get_pio_value(unsigned port, unsigned pin)
|
|
|
{
|
|
|
- u32 pdsr = 0;
|
|
|
- at91_pio_t *pio = (at91_pio_t *) ATMEL_BASE_PIOA;
|
|
|
- u32 mask;
|
|
|
+ struct at91_port *at91_port = at91_pio_get_port(port);
|
|
|
+ u32 pdsr = 0, mask;
|
|
|
|
|
|
- if ((port < ATMEL_PIO_PORTS) && (pin < 32)) {
|
|
|
+ if (at91_port && (pin < 32)) {
|
|
|
mask = 1 << pin;
|
|
|
- pdsr = readl(&pio->port[port].pdsr) & mask;
|
|
|
+ pdsr = readl(&at91_port->pdsr) & mask;
|
|
|
}
|
|
|
+
|
|
|
return pdsr != 0;
|
|
|
}
|
|
|
+
|
|
|
+/* Common GPIO API */
|
|
|
+
|
|
|
+#define at91_gpio_to_port(gpio) (gpio / 32)
|
|
|
+#define at91_gpio_to_pin(gpio) (gpio % 32)
|
|
|
+
|
|
|
+int gpio_request(unsigned gpio, const char *label)
|
|
|
+{
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int gpio_free(unsigned gpio)
|
|
|
+{
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int gpio_direction_input(unsigned gpio)
|
|
|
+{
|
|
|
+ at91_set_pio_input(at91_gpio_to_port(gpio),
|
|
|
+ at91_gpio_to_pin(gpio), 0);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int gpio_direction_output(unsigned gpio, int value)
|
|
|
+{
|
|
|
+ at91_set_pio_output(at91_gpio_to_port(gpio),
|
|
|
+ at91_gpio_to_pin(gpio), value);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int gpio_get_value(unsigned gpio)
|
|
|
+{
|
|
|
+ return at91_get_pio_value(at91_gpio_to_port(gpio),
|
|
|
+ at91_gpio_to_pin(gpio));
|
|
|
+}
|
|
|
+
|
|
|
+int gpio_set_value(unsigned gpio, int value)
|
|
|
+{
|
|
|
+ at91_set_pio_value(at91_gpio_to_port(gpio),
|
|
|
+ at91_gpio_to_pin(gpio), value);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|