From: Rashmica Gupta <rashmica.g@gmail.com>
To: linus.walleij@linaro.org
Cc: Rashmica Gupta <rashmica.g@gmail.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Joel Stanley <joel@jms.id.au>, Andrew Jeffery <andrew@aj.id.au>,
linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/4] gpio: Add in ast2600 details to Aspeed driver
Date: Thu, 5 Sep 2019 11:17:32 +1000 [thread overview]
Message-ID: <20190905011732.16059-1-rashmica.g@gmail.com> (raw)
The ast2600 is a new generation of SoC from ASPEED. Similarly to the
ast2400 and ast2500, it has a GPIO controller for it's 3.6V GPIO pins.
Additionally, it has a GPIO controller for 36 1.8V GPIO pins. These
voltages are fixed and cannot be configured via pinconf, so we need two
separate drivers for them.
Signed-off-by: Rashmica Gupta <rashmica.g@gmail.com>
---
drivers/gpio/gpio-aspeed.c | 30 ++++++++++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index 16c6eaf70857..4723b8780a8c 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c
@@ -662,12 +662,14 @@ static void aspeed_gpio_irq_handler(struct irq_desc *desc)
struct gpio_chip *gc = irq_desc_get_handler_data(desc);
struct irq_chip *ic = irq_desc_get_chip(desc);
struct aspeed_gpio *data = gpiochip_get_data(gc);
- unsigned int i, p, girq;
+ unsigned int i, p, girq, banks;
unsigned long reg;
+ struct aspeed_gpio *gpio = gpiochip_get_data(gc);
chained_irq_enter(ic, desc);
- for (i = 0; i < ARRAY_SIZE(aspeed_gpio_banks); i++) {
+ banks = DIV_ROUND_UP(gpio->config->nr_gpios, 32);
+ for (i = 0; i < banks; i++) {
const struct aspeed_gpio_bank *bank = &aspeed_gpio_banks[i];
reg = ioread32(bank_reg(data, bank, reg_irq_status));
@@ -1108,9 +1110,33 @@ static const struct aspeed_gpio_config ast2500_config =
/* 232 for simplicity, actual number is 228 (4-GPIO hole in GPIOAB) */
{ .nr_gpios = 232, .props = ast2500_bank_props, };
+static const struct aspeed_bank_props ast2600_bank_props[] = {
+ /* input output */
+ {5, 0xffffffff, 0x0000ffff}, /* U/V/W/X */
+ {6, 0xffff0000, 0x0fff0000}, /* Y/Z */
+ { },
+};
+
+static const struct aspeed_gpio_config ast2600_config =
+ /* 208 3.6V GPIOs */
+ { .nr_gpios = 208, .props = ast2600_bank_props, };
+
+static const struct aspeed_bank_props ast2600_1_8v_bank_props[] = {
+ /* input output */
+ {1, 0x0000000f, 0x0000000f}, /* E */
+ { },
+};
+
+static const struct aspeed_gpio_config ast2600_1_8v_config =
+ /* 36 1.8V GPIOs */
+ { .nr_gpios = 36, .props = ast2600_1_8v_bank_props, };
+
static const struct of_device_id aspeed_gpio_of_table[] = {
{ .compatible = "aspeed,ast2400-gpio", .data = &ast2400_config, },
{ .compatible = "aspeed,ast2500-gpio", .data = &ast2500_config, },
+ { .compatible = "aspeed,ast2600-gpio", .data = &ast2600_config, },
+ { .compatible = "aspeed,ast2600-1-8v-gpio",
+ .data = &ast2600_1_8v_config, },
{}
};
MODULE_DEVICE_TABLE(of, aspeed_gpio_of_table);
--
2.20.1
next reply other threads:[~2019-09-05 1:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 1:17 Rashmica Gupta [this message]
2019-09-05 3:57 ` [PATCH v2 3/4] gpio: Add in ast2600 details to Aspeed driver Andrew Jeffery
2019-09-05 7:08 ` Rashmica Gupta
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