gpio: zynq: Remove non driver model code

Remove non driver model support as it moved
to driver model. Dont need non driver model
anymore.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/mach-zynq/include/mach/gpio.h

@@ -8,8 +8,6 @@
 #ifndef _ZYNQ_GPIO_H
 #define _ZYNQ_GPIO_H
 
-#define ZYNQ_GPIO_BASE_ADDRESS 0xE000A000
-
 /* Maximum banks */
 #define ZYNQ_GPIO_MAX_BANK	4
 

drivers/gpio/zynq_gpio.c

@@ -13,8 +13,6 @@
 #include <asm/gpio.h>
 #include <asm/io.h>
 #include <asm/errno.h>
-
-#ifdef CONFIG_DM_GPIO
 #include <dm.h>
 #include <fdtdec.h>
 
@@ -23,7 +21,6 @@ DECLARE_GLOBAL_DATA_PTR;
 struct zynq_gpio_privdata {
 	phys_addr_t base;
 };
-#endif
 
 /**
  * zynq_gpio_get_bank_pin - Get the bank number and pin number within that bank
@@ -65,7 +62,7 @@ static inline void zynq_gpio_get_bank_pin(unsigned int pin_num,
 	}
 }
 
-int gpio_is_valid(unsigned gpio)
+static int gpio_is_valid(unsigned gpio)
 {
 	return (gpio >= 0) && (gpio < ZYNQ_GPIO_NR_GPIOS);
 }
@@ -79,158 +76,6 @@ static int check_gpio(unsigned gpio)
 	return 0;
 }
 
-#ifndef CONFIG_DM_GPIO
-/**
- * gpio_get_value - Get the state of the specified pin of GPIO device
- * @gpio:	gpio pin number within the device
- *
- * This function reads the state of the specified pin of the GPIO device.
- *
- * Return: 0 if the pin is low, 1 if pin is high.
- */
-int gpio_get_value(unsigned gpio)
-{
-	u32 data;
-	unsigned int bank_num, bank_pin_num;
-
-	if (check_gpio(gpio) < 0)
-		return -1;
-
-	zynq_gpio_get_bank_pin(gpio, &bank_num, &bank_pin_num);
-
-	data = readl(ZYNQ_GPIO_BASE_ADDRESS +
-			     ZYNQ_GPIO_DATA_RO_OFFSET(bank_num));
-
-	return (data >> bank_pin_num) & 1;
-}
-
-/**
- * gpio_set_value - Modify the value of the pin with specified value
- * @gpio:	gpio pin number within the device
- * @value:	value used to modify the value of the specified pin
- *
- * This function calculates the register offset (i.e to lower 16 bits or
- * upper 16 bits) based on the given pin number and sets the value of a
- * gpio pin to the specified value. The value is either 0 or non-zero.
- */
-int gpio_set_value(unsigned gpio, int value)
-{
-	unsigned int reg_offset, bank_num, bank_pin_num;
-
-	if (check_gpio(gpio) < 0)
-		return -1;
-
-	zynq_gpio_get_bank_pin(gpio, &bank_num, &bank_pin_num);
-
-	if (bank_pin_num >= ZYNQ_GPIO_MID_PIN_NUM) {
-		/* only 16 data bits in bit maskable reg */
-		bank_pin_num -= ZYNQ_GPIO_MID_PIN_NUM;
-		reg_offset = ZYNQ_GPIO_DATA_MSW_OFFSET(bank_num);
-	} else {
-		reg_offset = ZYNQ_GPIO_DATA_LSW_OFFSET(bank_num);
-	}
-
-	/*
-	 * get the 32 bit value to be written to the mask/data register where
-	 * the upper 16 bits is the mask and lower 16 bits is the data
-	 */
-	value = !!value;
-	value = ~(1 << (bank_pin_num + ZYNQ_GPIO_MID_PIN_NUM)) &
-		((value << bank_pin_num) | ZYNQ_GPIO_UPPER_MASK);
-
-	writel(value, ZYNQ_GPIO_BASE_ADDRESS + reg_offset);
-
-	return 0;
-}
-
-/**
- * gpio_direction_input - Set the direction of the specified GPIO pin as input
- * @gpio:	gpio pin number within the device
- *
- * This function uses the read-modify-write sequence to set the direction of
- * the gpio pin as input.
- *
- * Return: -1 if invalid gpio specified, 0 if successul
- */
-int gpio_direction_input(unsigned gpio)
-{
-	u32 reg;
-	unsigned int bank_num, bank_pin_num;
-
-	if (check_gpio(gpio) < 0)
-		return -1;
-
-	zynq_gpio_get_bank_pin(gpio, &bank_num, &bank_pin_num);
-
-	/* bank 0 pins 7 and 8 are special and cannot be used as inputs */
-	if (bank_num == 0 && (bank_pin_num == 7 || bank_pin_num == 8))
-		return -1;
-
-	/* clear the bit in direction mode reg to set the pin as input */
-	reg = readl(ZYNQ_GPIO_BASE_ADDRESS + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
-	reg &= ~BIT(bank_pin_num);
-	writel(reg, ZYNQ_GPIO_BASE_ADDRESS + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
-
-	return 0;
-}
-
-/**
- * gpio_direction_output - Set the direction of the specified GPIO pin as output
- * @gpio:	gpio pin number within the device
- * @value:	value to be written to specified pin
- *
- * This function sets the direction of specified GPIO pin as output, configures
- * the Output Enable register for the pin and uses zynq_gpio_set to set
- * the value of the pin to the value specified.
- *
- * Return: 0 always
- */
-int gpio_direction_output(unsigned gpio, int value)
-{
-	u32 reg;
-	unsigned int bank_num, bank_pin_num;
-
-	if (check_gpio(gpio) < 0)
-		return -1;
-
-	zynq_gpio_get_bank_pin(gpio, &bank_num, &bank_pin_num);
-
-	/* set the GPIO pin as output */
-	reg = readl(ZYNQ_GPIO_BASE_ADDRESS + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
-	reg |= BIT(bank_pin_num);
-	writel(reg, ZYNQ_GPIO_BASE_ADDRESS + ZYNQ_GPIO_DIRM_OFFSET(bank_num));
-
-	/* configure the output enable reg for the pin */
-	reg = readl(ZYNQ_GPIO_BASE_ADDRESS + ZYNQ_GPIO_OUTEN_OFFSET(bank_num));
-	reg |= BIT(bank_pin_num);
-	writel(reg, ZYNQ_GPIO_BASE_ADDRESS + ZYNQ_GPIO_OUTEN_OFFSET(bank_num));
-
-	/* set the state of the pin */
-	gpio_set_value(gpio, value);
-	return 0;
-}
-
-/**
- * Request a gpio before using it.
- *
- * NOTE: Argument 'label' is unused.
- */
-int gpio_request(unsigned gpio, const char *label)
-{
-	if (check_gpio(gpio) < 0)
-		return -1;
-
-	return 0;
-}
-
-/**
- * Reset and free the gpio after using it.
- */
-int gpio_free(unsigned gpio)
-{
-	return 0;
-}
-#else
 static int zynq_gpio_get_value(struct udevice *dev, unsigned gpio)
 {
 	u32 data;
@@ -368,4 +213,3 @@ U_BOOT_DRIVER(gpio_zynq) = {
 	.probe	= zynq_gpio_probe,
 	.priv_auto_alloc_size = sizeof(struct zynq_gpio_privdata),
 };
-#endif