@@ -17,6 +17,7 @@ obj-$(CONFIG_ARCH_DAVINCI_DM365) += dm365.o devices.o
obj-$(CONFIG_ARCH_DAVINCI_DA830) += da830.o devices-da8xx.o
obj-$(CONFIG_ARCH_DAVINCI_DA850) += da850.o devices-da8xx.o
obj-$(CONFIG_ARCH_DAVINCI_TNETV107X) += tnetv107x.o devices-tnetv107x.o
+obj-$(CONFIG_ARCH_DAVINCI_TNETV107X) += gpio-tnetv107x.o
obj-$(CONFIG_AINTC) += irq.o
obj-$(CONFIG_CP_INTC) += cp_intc.o
new file mode 100644
@@ -0,0 +1,201 @@
+/*
+ * TI TNETV107X GPIO Support
+ *
+ * Author: Cyril Chemparathy <cyril@ti.com>
+ *
+ * 2009 (c) Texas Instruments, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+
+#include <mach/common.h>
+#include <mach/tnetv107x.h>
+
+struct tnetv107x_gpio_regs {
+ u32 idver;
+ u32 data_in[3];
+ u32 data_out[3];
+ u32 direction[3];
+ u32 enable[3];
+};
+
+#define gpio_reg_index(gpio) ((gpio) >> 5)
+#define gpio_reg_bit(gpio) BIT((gpio) & 0x1f)
+
+#define gpio_reg_rmw(reg, mask, val) \
+ __raw_writel((__raw_readl(reg) & ~(mask)) | (val), (reg))
+
+#define gpio_reg_set_bit(reg, gpio) \
+ gpio_reg_rmw((reg) + gpio_reg_index(gpio), 0, gpio_reg_bit(gpio))
+
+#define gpio_reg_clear_bit(reg, gpio) \
+ gpio_reg_rmw((reg) + gpio_reg_index(gpio), gpio_reg_bit(gpio), 0)
+
+#define gpio_reg_get_bit(reg, gpio) \
+ (__raw_readl((reg) + gpio_reg_index(gpio)) & gpio_reg_bit(gpio))
+
+#define chip2controller(chip) \
+ container_of(chip, struct davinci_gpio_controller, chip)
+
+#define TNETV107X_GPIO_CTLRS DIV_ROUND_UP(TNETV107X_N_GPIOS, 32)
+
+static struct davinci_gpio_controller chips[TNETV107X_GPIO_CTLRS];
+
+static int tnetv107x_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ struct davinci_gpio_controller *ctlr = chip2controller(chip);
+ struct tnetv107x_gpio_regs __iomem *regs = ctlr->regs;
+ unsigned gpio = chip->base + offset;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctlr->lock, flags);
+
+ gpio_reg_set_bit(®s->enable, gpio);
+
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+
+ return 0;
+}
+
+static void tnetv107x_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+ struct davinci_gpio_controller *ctlr = chip2controller(chip);
+ struct tnetv107x_gpio_regs __iomem *regs = ctlr->regs;
+ unsigned gpio = chip->base + offset;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctlr->lock, flags);
+
+ gpio_reg_clear_bit(®s->enable, gpio);
+
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+}
+
+static int tnetv107x_gpio_dir_in(struct gpio_chip *chip, unsigned offset)
+{
+ struct davinci_gpio_controller *ctlr = chip2controller(chip);
+ struct tnetv107x_gpio_regs __iomem *regs = ctlr->regs;
+ unsigned gpio = chip->base + offset;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctlr->lock, flags);
+
+ gpio_reg_set_bit(®s->direction, gpio);
+
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+
+ return 0;
+}
+
+static int tnetv107x_gpio_dir_out(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct davinci_gpio_controller *ctlr = chip2controller(chip);
+ struct tnetv107x_gpio_regs __iomem *regs = ctlr->regs;
+ unsigned gpio = chip->base + offset;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctlr->lock, flags);
+
+ if (value)
+ gpio_reg_set_bit(®s->data_out, gpio);
+ else
+ gpio_reg_clear_bit(®s->data_out, gpio);
+
+ gpio_reg_clear_bit(®s->direction, gpio);
+
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+
+ return 0;
+}
+
+static int tnetv107x_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct davinci_gpio_controller *ctlr = chip2controller(chip);
+ struct tnetv107x_gpio_regs __iomem *regs = ctlr->regs;
+ unsigned gpio = chip->base + offset;
+ int ret;
+
+ ret = gpio_reg_get_bit(®s->data_in, gpio);
+
+ return ret ? 1 : 0;
+}
+
+static void tnetv107x_gpio_set(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct davinci_gpio_controller *ctlr = chip2controller(chip);
+ struct tnetv107x_gpio_regs __iomem *regs = ctlr->regs;
+ unsigned gpio = chip->base + offset;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctlr->lock, flags);
+
+ if (value)
+ gpio_reg_set_bit(®s->data_out, gpio);
+ else
+ gpio_reg_clear_bit(®s->data_out, gpio);
+
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+}
+
+static int __init tnetv107x_gpio_setup(void)
+{
+ int i, base;
+ unsigned ngpio;
+ struct davinci_soc_info *soc_info = &davinci_soc_info;
+ struct tnetv107x_gpio_regs *regs;
+ struct davinci_gpio_controller *ctlr;
+
+ if (soc_info->gpio_type != GPIO_TYPE_TNETV107X)
+ return 0;
+
+ ngpio = soc_info->gpio_num;
+ if (ngpio == 0) {
+ pr_err("GPIO setup: how many GPIOs?\n");
+ return -EINVAL;
+ }
+
+ if (WARN_ON(DAVINCI_N_GPIO < ngpio))
+ ngpio = DAVINCI_N_GPIO;
+
+ regs = soc_info->gpio_base;
+ if (WARN_ON(!regs))
+ return -EINVAL;
+
+ for (i = 0, base = 0; base < ngpio; i++, base += 32) {
+ ctlr = &chips[i];
+
+ ctlr->chip.label = "tnetv107x";
+ ctlr->chip.can_sleep = 0;
+ ctlr->chip.base = base;
+ ctlr->chip.ngpio = ngpio - base;
+ if (ctlr->chip.ngpio > 32)
+ ctlr->chip.ngpio = 32;
+
+ ctlr->chip.request = tnetv107x_gpio_request;
+ ctlr->chip.free = tnetv107x_gpio_free;
+ ctlr->chip.direction_input = tnetv107x_gpio_dir_in;
+ ctlr->chip.get = tnetv107x_gpio_get;
+ ctlr->chip.direction_output = tnetv107x_gpio_dir_out;
+ ctlr->chip.set = tnetv107x_gpio_set;
+
+ spin_lock_init(&ctlr->lock);
+
+ ctlr->regs = regs;
+ ctlr->set_data = ®s->data_out[i];
+ ctlr->clr_data = ®s->data_out[i];
+ ctlr->in_data = ®s->data_in[i];
+
+ gpiochip_add(&ctlr->chip);
+ }
+
+ soc_info->gpio_ctlrs = chips;
+ soc_info->gpio_ctlrs_num = DIV_ROUND_UP(ngpio, 32);
+ return 0;
+}
+pure_initcall(tnetv107x_gpio_setup);
@@ -25,6 +25,7 @@
enum davinci_gpio_type {
GPIO_TYPE_DAVINCI = 0,
+ GPIO_TYPE_TNETV107X,
};
/*