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Message-Id: <20221207163359.26564-3-larry.lai@yunjingtech.com>
Date: Thu, 8 Dec 2022 00:33:58 +0800
From: "larry.lai" <larry.lai@...jingtech.com>
To: lee@...nel.org, andriy.shevchenko@...ux.intel.com,
linus.walleij@...aro.org, pavel@....cz
Cc: linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
linux-leds@...r.kernel.org, GaryWang@...on.com.tw,
musa.lin@...jingtech.com, jack.chang@...jingtech.com,
noah.hung@...jingtech.com, "larry.lai" <larry.lai@...jingtech.com>
Subject: [RFC 2/3] pinctrl: Add support pin control for UP board CPLD/FPGA
The UP Squared board <http://www.upboard.com> implements certain
features (pin control) through an on-board FPGA.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: larry.lai <larry.lai@...jingtech.com>
---
PATCH V3 -> RFC 2022/11/23:
(1) Refer 2022/11/09 Linus Walleij review, cleaned up coding style and
addressed review comments.
PATCH V2 -> V3:
There's no change.
PATCH V1 -> V2:
(1) Synchronized with upboard github to rc2
(2) Refer 2022/10/19 Mark Brown and Andy Shevchenko review, we removed
the regmap and acpi patches and implement in upboard pinctrl driver.
(3) Refer 2022/10/19 Andy Shevchenko review, fixed the coding style
issues, removed using gpio_xxxx API and removed including <linux/gpio.h>.
---
drivers/pinctrl/Kconfig | 14 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-upboard.c | 1384 +++++++++++++++++++++++++++++
3 files changed, 1399 insertions(+)
create mode 100644 drivers/pinctrl/pinctrl-upboard.c
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 1cf74b0c42e5..cc8dae75289b 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -483,6 +483,20 @@ config PINCTRL_THUNDERBAY
rate control and direction control. This module will be
called as pinctrl-thunderbay.
+config PINCTRL_UPBOARD
+ tristate "UP board FPGA pin controller"
+ depends on (X86 && ACPI) || COMPILE_TEST
+ depends on MFD_INTEL_UPBOARD_FPGA
+ select GENERIC_PINCONF
+ select PINMUX
+ select PINCONF
+ help
+ Pin controller for the FPGA GPIO lines on UP boards. Due to the
+ hardware layout, these are meant to be controlled in tandem with their
+ corresponding Intel SoC GPIOs.
+ To compile this driver as a module, choose M here: the module
+ will be called pinctrl-upboard.
+
config PINCTRL_ZYNQ
bool "Pinctrl driver for Xilinx Zynq"
depends on ARCH_ZYNQ
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index e76f5cdc64b0..c366706d36e7 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_PINCTRL_STMFX) += pinctrl-stmfx.o
obj-$(CONFIG_PINCTRL_SX150X) += pinctrl-sx150x.o
obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o
obj-$(CONFIG_PINCTRL_THUNDERBAY) += pinctrl-thunderbay.o
+obj-$(CONFIG_PINCTRL_UPBOARD) += pinctrl-upboard.o
obj-$(CONFIG_PINCTRL_ZYNQMP) += pinctrl-zynqmp.o
obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o
diff --git a/drivers/pinctrl/pinctrl-upboard.c b/drivers/pinctrl/pinctrl-upboard.c
new file mode 100644
index 000000000000..e06151f4c128
--- /dev/null
+++ b/drivers/pinctrl/pinctrl-upboard.c
@@ -0,0 +1,1384 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * UP Board FPGA-based pin controller driver
+ *
+ * Copyright (c) 2017, Emutex Ltd. All rights reserved.
+ * Copyright (c) 2022, YunJingTech Ltd.
+ *
+ * Authors: Javier Arteaga <javier@...tex.com>
+ * Dan O'Donovan <dan@...tex.com>
+ * Nicola Lunghi <nicolal@...tex.com>
+ * Gary Wang <garywang@...on.com.tw>
+ */
+
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/driver.h>
+#include <linux/kernel.h>
+#include <linux/mfd/upboard-fpga.h>
+#include <linux/module.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+
+#include "core.h"
+
+/* Offset from regs */
+#define REVID 0x000
+#define REVID_SHIFT 16
+#define REVID_MASK GENMASK(31, 16)
+
+#define CAPLIST 0x004
+#define CAPLIST_ID_SHIFT 16
+#define CAPLIST_ID_MASK GENMASK(23, 16)
+#define CAPLIST_ID_GPIO_HW_INFO 1
+#define CAPLIST_ID_PWM 2
+#define CAPLIST_ID_BLINK 3
+#define CAPLIST_ID_EXP 4
+#define CAPLIST_NEXT_SHIFT 0
+#define CAPLIST_NEXT_MASK GENMASK(15, 0)
+
+#define PADBAR 0x00c
+
+#define PADOWN_BITS 4
+#define PADOWN_SHIFT(p) ((p) % 8 * PADOWN_BITS)
+#define PADOWN_MASK(p) (GENMASK(3, 0) << PADOWN_SHIFT(p))
+#define PADOWN_GPP(p) ((p) / 8)
+
+/* Offset from pad_regs */
+#define PADCFG0 0x000
+#define PADCFG0_RXEVCFG_SHIFT 25
+#define PADCFG0_RXEVCFG_MASK GENMASK(26, 25)
+#define PADCFG0_RXEVCFG_LEVEL 0
+#define PADCFG0_RXEVCFG_EDGE 1
+#define PADCFG0_RXEVCFG_DISABLED 2
+#define PADCFG0_RXEVCFG_EDGE_BOTH 3
+#define PADCFG0_PREGFRXSEL BIT(24)
+#define PADCFG0_RXINV BIT(23)
+#define PADCFG0_GPIROUTIOXAPIC BIT(20)
+#define PADCFG0_GPIROUTSCI BIT(19)
+#define PADCFG0_GPIROUTSMI BIT(18)
+#define PADCFG0_GPIROUTNMI BIT(17)
+#define PADCFG0_PMODE_SHIFT 10
+#define PADCFG0_PMODE_MASK GENMASK(13, 10)
+#define PADCFG0_PMODE_GPIO 0
+#define PADCFG0_GPIORXDIS BIT(9)
+#define PADCFG0_GPIOTXDIS BIT(8)
+#define PADCFG0_GPIORXSTATE BIT(1)
+#define PADCFG0_GPIOTXSTATE BIT(0)
+
+#define PADCFG1 0x004
+#define PADCFG1_TERM_UP BIT(13)
+#define PADCFG1_TERM_SHIFT 10
+#define PADCFG1_TERM_MASK GENMASK(12, 10)
+#define PADCFG1_TERM_20K BIT(2)
+#define PADCFG1_TERM_5K BIT(1)
+#define PADCFG1_TERM_1K BIT(0)
+#define PADCFG1_TERM_833 (BIT(1) | BIT(0))
+
+#define PADCFG2 0x008
+#define PADCFG2_DEBEN BIT(0)
+#define PADCFG2_DEBOUNCE_SHIFT 1
+#define PADCFG2_DEBOUNCE_MASK GENMASK(4, 1)
+
+#define DEBOUNCE_PERIOD_NSEC 31250
+
+/* Additional features supported by the hardware */
+#define PINCTRL_FEATURE_DEBOUNCE BIT(0)
+#define PINCTRL_FEATURE_1K_PD BIT(1)
+
+#define pin_to_padno(c, p) ((p) - (c)->pin_base)
+#define padgroup_offset(g, p) ((p) - (g)->base)
+
+struct intel_pinctrl {
+ struct device *dev;
+ raw_spinlock_t lock;
+ struct pinctrl_desc pctldesc;
+ struct pinctrl_dev *pctldev;
+ struct gpio_chip chip;
+ struct irq_chip irqchip;
+ void *soc;
+ void *communities;
+ size_t ncommunities;
+};
+
+struct upboard_pin {
+ struct regmap_field *funcbit;
+ struct regmap_field *enbit;
+ struct regmap_field *dirbit;
+ /* native pin controllers: number, base, irq */
+ unsigned int gpio;
+ unsigned int base;
+ int irq;
+ void __iomem *regs;
+};
+
+struct upboard_pinctrl {
+ struct gpio_chip chip;
+ struct device *dev;
+ struct pinctrl_dev *pctldev;
+ struct pinctrl_desc *pctldesc;
+ struct upboard_pin *pins;
+ struct regmap *regmap;
+ const unsigned int *rpi_mapping;
+ int ident;
+};
+
+enum upboard_func0_fpgabit {
+ UPFPGA_I2C0_EN = 8,
+ UPFPGA_I2C1_EN = 9,
+ UPFPGA_CEC0_EN = 12,
+ UPFPGA_ADC0_EN = 14,
+};
+
+static const struct reg_field upboard_i2c0_reg =
+ REG_FIELD(UPFPGA_REG_FUNC_EN0, UPFPGA_I2C0_EN, UPFPGA_I2C0_EN);
+
+static const struct reg_field upboard_i2c1_reg =
+ REG_FIELD(UPFPGA_REG_FUNC_EN0, UPFPGA_I2C1_EN, UPFPGA_I2C1_EN);
+
+static const struct reg_field upboard_adc0_reg =
+ REG_FIELD(UPFPGA_REG_FUNC_EN0, UPFPGA_ADC0_EN, UPFPGA_ADC0_EN);
+
+/* Pin group information */
+struct upboard_pingroup {
+ const char *name;
+ const unsigned int *pins;
+ size_t npins;
+};
+
+/* Pin function information */
+struct upboard_function {
+ const char *name;
+ const char * const *groups;
+ size_t ngroups;
+};
+
+#define UPBOARD_BIT_TO_PIN(r, bit) \
+ ((r) * UPFPGA_REGISTER_SIZE + (bit))
+
+/*
+ * UP board data
+ */
+
+#define UPBOARD_UP_BIT_TO_PIN(r, id) (UPBOARD_BIT_TO_PIN(r, UPFPGA_UP_##id))
+
+#define UPBOARD_UP_PIN_ANON(r, bit) \
+ { \
+ .number = UPBOARD_BIT_TO_PIN(r, bit), \
+ }
+
+#define UPBOARD_UP_PIN_NAME(r, id) \
+ { \
+ .number = UPBOARD_UP_BIT_TO_PIN(r, id), \
+ .name = #id, \
+ }
+
+#define UPBOARD_UP_PIN_FUNC(r, id, data) \
+ { \
+ .number = UPBOARD_UP_BIT_TO_PIN(r, id), \
+ .name = #id, \
+ .drv_data = (void *)(data), \
+ }
+
+#define PIN_GROUP(n, p) \
+ { \
+ .name = (n), \
+ .pins = (p), \
+ .npins = ARRAY_SIZE((p)), \
+ }
+
+#define FUNCTION(n, g) \
+ { \
+ .name = (n), \
+ .groups = (g), \
+ .ngroups = ARRAY_SIZE((g)), \
+ }
+
+enum upboard_up_reg1_fpgabit {
+ UPFPGA_UP_I2C1_SDA,
+ UPFPGA_UP_I2C1_SCL,
+ UPFPGA_UP_ADC0,
+ UPFPGA_UP_GPIO17,
+ UPFPGA_UP_GPIO27,
+ UPFPGA_UP_GPIO22,
+ UPFPGA_UP_SPI_MOSI,
+ UPFPGA_UP_SPI_MISO,
+ UPFPGA_UP_SPI_CLK,
+ UPFPGA_UP_I2C0_SDA,
+ UPFPGA_UP_GPIO5,
+ UPFPGA_UP_GPIO6,
+ UPFPGA_UP_PWM1,
+ UPFPGA_UP_I2S_FRM,
+ UPFPGA_UP_GPIO26,
+ UPFPGA_UP_UART1_TX,
+};
+
+enum upboard_up_reg2_fpgabit {
+ UPFPGA_UP_UART1_RX,
+ UPFPGA_UP_I2S_CLK,
+ UPFPGA_UP_GPIO23,
+ UPFPGA_UP_GPIO24,
+ UPFPGA_UP_GPIO25,
+ UPFPGA_UP_SPI_CS0,
+ UPFPGA_UP_SPI_CS1,
+ UPFPGA_UP_I2C0_SCL,
+ UPFPGA_UP_PWM0,
+ UPFPGA_UP_GPIO16,
+ UPFPGA_UP_I2S_DIN,
+ UPFPGA_UP_I2S_DOUT,
+};
+
+#define UPFPGA_UP_UART1_RTS UPFPGA_UP_GPIO17
+#define UPFPGA_UP_UART1_CTS UPFPGA_UP_GPIO16
+
+static struct pinctrl_pin_desc upboard_up_pins[] = {
+ UPBOARD_UP_PIN_FUNC(0, I2C1_SDA, &upboard_i2c1_reg),
+ UPBOARD_UP_PIN_FUNC(0, I2C1_SCL, &upboard_i2c1_reg),
+ UPBOARD_UP_PIN_FUNC(0, ADC0, &upboard_adc0_reg),
+ UPBOARD_UP_PIN_NAME(0, UART1_RTS),
+ UPBOARD_UP_PIN_NAME(0, GPIO27),
+ UPBOARD_UP_PIN_NAME(0, GPIO22),
+ UPBOARD_UP_PIN_NAME(0, SPI_MOSI),
+ UPBOARD_UP_PIN_NAME(0, SPI_MISO),
+ UPBOARD_UP_PIN_NAME(0, SPI_CLK),
+ UPBOARD_UP_PIN_FUNC(0, I2C0_SDA, &upboard_i2c0_reg),
+ UPBOARD_UP_PIN_NAME(0, GPIO5),
+ UPBOARD_UP_PIN_NAME(0, GPIO6),
+ UPBOARD_UP_PIN_NAME(0, PWM1),
+ UPBOARD_UP_PIN_NAME(0, I2S_FRM),
+ UPBOARD_UP_PIN_NAME(0, GPIO26),
+ UPBOARD_UP_PIN_NAME(0, UART1_TX),
+ /* register 1 */
+ UPBOARD_UP_PIN_NAME(1, UART1_RX),
+ UPBOARD_UP_PIN_NAME(1, I2S_CLK),
+ UPBOARD_UP_PIN_NAME(1, GPIO23),
+ UPBOARD_UP_PIN_NAME(1, GPIO24),
+ UPBOARD_UP_PIN_NAME(1, GPIO25),
+ UPBOARD_UP_PIN_NAME(1, SPI_CS0),
+ UPBOARD_UP_PIN_NAME(1, SPI_CS1),
+ UPBOARD_UP_PIN_FUNC(1, I2C0_SCL, &upboard_i2c0_reg),
+ UPBOARD_UP_PIN_NAME(1, PWM0),
+ UPBOARD_UP_PIN_NAME(1, UART1_CTS),
+ UPBOARD_UP_PIN_NAME(1, I2S_DIN),
+ UPBOARD_UP_PIN_NAME(1, I2S_DOUT),
+};
+
+static const unsigned int upboard_up_rpi_mapping[] = {
+ UPBOARD_UP_BIT_TO_PIN(0, I2C0_SDA),
+ UPBOARD_UP_BIT_TO_PIN(1, I2C0_SCL),
+ UPBOARD_UP_BIT_TO_PIN(0, I2C1_SDA),
+ UPBOARD_UP_BIT_TO_PIN(0, I2C1_SCL),
+ UPBOARD_UP_BIT_TO_PIN(0, ADC0),
+ UPBOARD_UP_BIT_TO_PIN(0, GPIO5),
+ UPBOARD_UP_BIT_TO_PIN(0, GPIO6),
+ UPBOARD_UP_BIT_TO_PIN(1, SPI_CS1),
+ UPBOARD_UP_BIT_TO_PIN(1, SPI_CS0),
+ UPBOARD_UP_BIT_TO_PIN(0, SPI_MISO),
+ UPBOARD_UP_BIT_TO_PIN(0, SPI_MOSI),
+ UPBOARD_UP_BIT_TO_PIN(0, SPI_CLK),
+ UPBOARD_UP_BIT_TO_PIN(1, PWM0),
+ UPBOARD_UP_BIT_TO_PIN(0, PWM1),
+ UPBOARD_UP_BIT_TO_PIN(0, UART1_TX),
+ UPBOARD_UP_BIT_TO_PIN(1, UART1_RX),
+ UPBOARD_UP_BIT_TO_PIN(1, GPIO16),
+ UPBOARD_UP_BIT_TO_PIN(0, GPIO17),
+ UPBOARD_UP_BIT_TO_PIN(1, I2S_CLK),
+ UPBOARD_UP_BIT_TO_PIN(0, I2S_FRM),
+ UPBOARD_UP_BIT_TO_PIN(1, I2S_DIN),
+ UPBOARD_UP_BIT_TO_PIN(1, I2S_DOUT),
+ UPBOARD_UP_BIT_TO_PIN(0, GPIO22),
+ UPBOARD_UP_BIT_TO_PIN(1, GPIO23),
+ UPBOARD_UP_BIT_TO_PIN(1, GPIO24),
+ UPBOARD_UP_BIT_TO_PIN(1, GPIO25),
+ UPBOARD_UP_BIT_TO_PIN(0, GPIO26),
+ UPBOARD_UP_BIT_TO_PIN(0, GPIO27),
+};
+
+static const unsigned int uart1_pins[] = { 14, 15, 16, 17 };
+static const unsigned int uart2_pins[] = { 25, 27 };
+static const unsigned int i2c0_pins[] = { 0, 1 };
+static const unsigned int i2c1_pins[] = { 2, 3 };
+static const unsigned int spi2_pins[] = { 8, 9, 10, 11 };
+static const unsigned int i2s0_pins[] = { 18, 19, 20, 21 };
+static const unsigned int pwm0_pins[] = { 12 };
+static const unsigned int pwm1_pins[] = { 13 };
+static const unsigned int adc0_pins[] = { 4 };
+
+static const struct upboard_pingroup pin_groups[] = {
+ PIN_GROUP("uart1_grp", uart1_pins),
+ PIN_GROUP("uart2_grp", uart2_pins),
+ PIN_GROUP("i2c0_grp", i2c0_pins),
+ PIN_GROUP("i2c1_grp", i2c1_pins),
+ PIN_GROUP("spi2_grp", spi2_pins),
+ PIN_GROUP("i2s0_grp", i2s0_pins),
+ PIN_GROUP("pwm0_grp", pwm0_pins),
+ PIN_GROUP("pwm1_grp", pwm1_pins),
+ PIN_GROUP("adc0_grp", adc0_pins),
+};
+
+static const char * const uart1_groups[] = { "uart1_grp" };
+static const char * const uart2_groups[] = { "uart2_grp" };
+static const char * const i2c0_groups[] = { "i2c0_grp" };
+static const char * const i2c1_groups[] = { "i2c1_grp" };
+static const char * const spi2_groups[] = { "spi2_grp" };
+static const char * const i2s0_groups[] = { "i2s0_grp" };
+static const char * const pwm0_groups[] = { "pwm0_grp" };
+static const char * const pwm1_groups[] = { "pwm1_grp" };
+static const char * const adc0_groups[] = { "adc0_grp" };
+
+static const struct upboard_function pin_functions[] = {
+ FUNCTION("uart1", uart1_groups),
+ FUNCTION("uart2", uart2_groups),
+ FUNCTION("i2c0", i2c0_groups),
+ FUNCTION("i2c1", i2c1_groups),
+ FUNCTION("spi2", spi2_groups),
+ FUNCTION("i2s0", i2s0_groups),
+ FUNCTION("pwm0", pwm0_groups),
+ FUNCTION("pwm1", pwm1_groups),
+ FUNCTION("adc0", adc0_groups),
+};
+
+/*
+ * UP^2 board data
+ */
+
+#define UPBOARD_UP2_BIT_TO_PIN(r, id) (UPBOARD_BIT_TO_PIN(r, UPFPGA_UP2_##id))
+
+#define UPBOARD_UP2_PIN_ANON(r, bit) \
+ { \
+ .number = UPBOARD_BIT_TO_PIN(r, bit), \
+ .name = "NONAME", \
+ }
+
+#define UPBOARD_UP2_PIN_NAME(r, id) \
+ { \
+ .number = UPBOARD_UP2_BIT_TO_PIN(r, id), \
+ .name = #id, \
+ }
+
+#define UPBOARD_UP2_PIN_FUNC(r, id, data) \
+ { \
+ .number = UPBOARD_UP2_BIT_TO_PIN(r, id), \
+ .name = #id, \
+ .drv_data = (void *)(data), \
+ }
+
+enum upboard_up2_reg0_fpgabit {
+ UPFPGA_UP2_UART1_TXD,
+ UPFPGA_UP2_UART1_RXD,
+ UPFPGA_UP2_UART1_RTS,
+ UPFPGA_UP2_UART1_CTS,
+ UPFPGA_UP2_GPIO3,
+ UPFPGA_UP2_GPIO5,
+ UPFPGA_UP2_GPIO6,
+ UPFPGA_UP2_GPIO11,
+ UPFPGA_UP2_EXHAT_LVDS1n,
+ UPFPGA_UP2_EXHAT_LVDS1p,
+ UPFPGA_UP2_SPI2_TXD,
+ UPFPGA_UP2_SPI2_RXD,
+ UPFPGA_UP2_SPI2_FS1,
+ UPFPGA_UP2_SPI2_FS0,
+ UPFPGA_UP2_SPI2_CLK,
+ UPFPGA_UP2_SPI1_TXD,
+};
+
+enum upboard_up2_reg1_fpgabit {
+ UPFPGA_UP2_SPI1_RXD,
+ UPFPGA_UP2_SPI1_FS1,
+ UPFPGA_UP2_SPI1_FS0,
+ UPFPGA_UP2_SPI1_CLK,
+ UPFPGA_UP2_BIT20,
+ UPFPGA_UP2_BIT21,
+ UPFPGA_UP2_BIT22,
+ UPFPGA_UP2_BIT23,
+ UPFPGA_UP2_PWM1,
+ UPFPGA_UP2_PWM0,
+ UPFPGA_UP2_EXHAT_LVDS0n,
+ UPFPGA_UP2_EXHAT_LVDS0p,
+ UPFPGA_UP2_I2C0_SCL,
+ UPFPGA_UP2_I2C0_SDA,
+ UPFPGA_UP2_I2C1_SCL,
+ UPFPGA_UP2_I2C1_SDA,
+};
+
+enum upboard_up2_reg2_fpgabit {
+ UPFPGA_UP2_EXHAT_LVDS3n,
+ UPFPGA_UP2_EXHAT_LVDS3p,
+ UPFPGA_UP2_EXHAT_LVDS4n,
+ UPFPGA_UP2_EXHAT_LVDS4p,
+ UPFPGA_UP2_EXHAT_LVDS5n,
+ UPFPGA_UP2_EXHAT_LVDS5p,
+ UPFPGA_UP2_I2S_SDO,
+ UPFPGA_UP2_I2S_SDI,
+ UPFPGA_UP2_I2S_WS_SYNC,
+ UPFPGA_UP2_I2S_BCLK,
+ UPFPGA_UP2_EXHAT_LVDS6n,
+ UPFPGA_UP2_EXHAT_LVDS6p,
+ UPFPGA_UP2_EXHAT_LVDS7n,
+ UPFPGA_UP2_EXHAT_LVDS7p,
+ UPFPGA_UP2_EXHAT_LVDS2n,
+ UPFPGA_UP2_EXHAT_LVDS2p,
+};
+
+static struct pinctrl_pin_desc upboard_up2_pins[] = {
+ UPBOARD_UP2_PIN_NAME(0, UART1_TXD),
+ UPBOARD_UP2_PIN_NAME(0, UART1_RXD),
+ UPBOARD_UP2_PIN_NAME(0, UART1_RTS),
+ UPBOARD_UP2_PIN_NAME(0, UART1_CTS),
+ UPBOARD_UP2_PIN_NAME(0, GPIO3),
+ UPBOARD_UP2_PIN_NAME(0, GPIO5),
+ UPBOARD_UP2_PIN_NAME(0, GPIO6),
+ UPBOARD_UP2_PIN_NAME(0, GPIO11),
+ UPBOARD_UP2_PIN_NAME(0, EXHAT_LVDS1n),
+ UPBOARD_UP2_PIN_NAME(0, EXHAT_LVDS1p),
+ UPBOARD_UP2_PIN_NAME(0, SPI2_TXD),
+ UPBOARD_UP2_PIN_NAME(0, SPI2_RXD),
+ UPBOARD_UP2_PIN_NAME(0, SPI2_FS1),
+ UPBOARD_UP2_PIN_NAME(0, SPI2_FS0),
+ UPBOARD_UP2_PIN_NAME(0, SPI2_CLK),
+ UPBOARD_UP2_PIN_NAME(0, SPI1_TXD),
+ UPBOARD_UP2_PIN_NAME(1, SPI1_RXD),
+ UPBOARD_UP2_PIN_NAME(1, SPI1_FS1),
+ UPBOARD_UP2_PIN_NAME(1, SPI1_FS0),
+ UPBOARD_UP2_PIN_NAME(1, SPI1_CLK),
+ UPBOARD_UP2_PIN_ANON(1, 4),
+ UPBOARD_UP2_PIN_ANON(1, 5),
+ UPBOARD_UP2_PIN_ANON(1, 6),
+ UPBOARD_UP2_PIN_ANON(1, 7),
+ UPBOARD_UP2_PIN_NAME(1, PWM1),
+ UPBOARD_UP2_PIN_NAME(1, PWM0),
+ UPBOARD_UP2_PIN_NAME(1, EXHAT_LVDS0n),
+ UPBOARD_UP2_PIN_NAME(1, EXHAT_LVDS0p),
+ UPBOARD_UP2_PIN_FUNC(1, I2C0_SCL, &upboard_i2c0_reg),
+ UPBOARD_UP2_PIN_FUNC(1, I2C0_SDA, &upboard_i2c0_reg),
+ UPBOARD_UP2_PIN_FUNC(1, I2C1_SCL, &upboard_i2c1_reg),
+ UPBOARD_UP2_PIN_FUNC(1, I2C1_SDA, &upboard_i2c1_reg),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS3n),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS3p),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS4n),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS4p),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS5n),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS5p),
+ UPBOARD_UP2_PIN_NAME(2, I2S_SDO),
+ UPBOARD_UP2_PIN_NAME(2, I2S_SDI),
+ UPBOARD_UP2_PIN_NAME(2, I2S_WS_SYNC),
+ UPBOARD_UP2_PIN_NAME(2, I2S_BCLK),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS6n),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS6p),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS7n),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS7p),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS2n),
+ UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS2p),
+};
+
+static const unsigned int upboard_up2_rpi_mapping[] = {
+ UPBOARD_UP2_BIT_TO_PIN(1, I2C0_SDA),
+ UPBOARD_UP2_BIT_TO_PIN(1, I2C0_SCL),
+ UPBOARD_UP2_BIT_TO_PIN(1, I2C1_SDA),
+ UPBOARD_UP2_BIT_TO_PIN(1, I2C1_SCL),
+ UPBOARD_UP2_BIT_TO_PIN(0, GPIO3),
+ UPBOARD_UP2_BIT_TO_PIN(0, GPIO11),
+ UPBOARD_UP2_BIT_TO_PIN(0, SPI2_CLK),
+ UPBOARD_UP2_BIT_TO_PIN(1, SPI1_FS1),
+ UPBOARD_UP2_BIT_TO_PIN(1, SPI1_FS0),
+ UPBOARD_UP2_BIT_TO_PIN(1, SPI1_RXD),
+ UPBOARD_UP2_BIT_TO_PIN(0, SPI1_TXD),
+ UPBOARD_UP2_BIT_TO_PIN(1, SPI1_CLK),
+ UPBOARD_UP2_BIT_TO_PIN(1, PWM0),
+ UPBOARD_UP2_BIT_TO_PIN(1, PWM1),
+ UPBOARD_UP2_BIT_TO_PIN(0, UART1_TXD),
+ UPBOARD_UP2_BIT_TO_PIN(0, UART1_RXD),
+ UPBOARD_UP2_BIT_TO_PIN(0, UART1_CTS),
+ UPBOARD_UP2_BIT_TO_PIN(0, UART1_RTS),
+ UPBOARD_UP2_BIT_TO_PIN(2, I2S_BCLK),
+ UPBOARD_UP2_BIT_TO_PIN(2, I2S_WS_SYNC),
+ UPBOARD_UP2_BIT_TO_PIN(2, I2S_SDI),
+ UPBOARD_UP2_BIT_TO_PIN(2, I2S_SDO),
+ UPBOARD_UP2_BIT_TO_PIN(0, GPIO6),
+ UPBOARD_UP2_BIT_TO_PIN(0, SPI2_FS1),
+ UPBOARD_UP2_BIT_TO_PIN(0, SPI2_RXD),
+ UPBOARD_UP2_BIT_TO_PIN(0, SPI2_TXD),
+ UPBOARD_UP2_BIT_TO_PIN(0, SPI2_FS0),
+ UPBOARD_UP2_BIT_TO_PIN(0, GPIO5),
+};
+
+/*
+ * UP Core board + CREX carrier board data
+ */
+
+#define UPBOARD_UPCORE_CREX_BIT_TO_PIN(r, id) \
+ (UPBOARD_BIT_TO_PIN(r, UPFPGA_UPCORE_CREX_##id))
+
+#define UPBOARD_UPCORE_CREX_PIN_ANON(r, bit) \
+ { \
+ .number = UPBOARD_BIT_TO_PIN(r, bit), \
+ }
+
+#define UPBOARD_UPCORE_CREX_PIN_NAME(r, id) \
+ { \
+ .number = UPBOARD_UPCORE_CREX_BIT_TO_PIN(r, id), \
+ .name = #id, \
+ }
+
+#define UPBOARD_UPCORE_CREX_PIN_FUNC(r, id, data) \
+ { \
+ .number = UPBOARD_UPCORE_CREX_BIT_TO_PIN(r, id), \
+ .name = #id, \
+ .drv_data = (void *)(data), \
+ }
+
+enum upboard_upcore_crex_reg1_fpgabit {
+ UPFPGA_UPCORE_CREX_I2C0_SDA,
+ UPFPGA_UPCORE_CREX_I2C0_SCL,
+ UPFPGA_UPCORE_CREX_I2C1_SDA,
+ UPFPGA_UPCORE_CREX_I2C1_SCL,
+ UPFPGA_UPCORE_CREX_SPI2_CS0,
+ UPFPGA_UPCORE_CREX_SPI2_CS1,
+ UPFPGA_UPCORE_CREX_SPI2_MOSI,
+ UPFPGA_UPCORE_CREX_SPI2_MISO,
+ UPFPGA_UPCORE_CREX_SPI2_CLK,
+ UPFPGA_UPCORE_CREX_UART1_TXD,
+ UPFPGA_UPCORE_CREX_UART1_RXD,
+ UPFPGA_UPCORE_CREX_PWM0,
+ UPFPGA_UPCORE_CREX_PWM1,
+ UPFPGA_UPCORE_CREX_I2S2_FRM,
+ UPFPGA_UPCORE_CREX_I2S2_CLK,
+ UPFPGA_UPCORE_CREX_I2S2_RX,
+};
+
+enum upboard_upcore_crex_reg2_fpgabit {
+ UPFPGA_UPCORE_CREX_I2S2_TX,
+ UPFPGA_UPCORE_CREX_GPIO0,
+ UPFPGA_UPCORE_CREX_GPIO2,
+ UPFPGA_UPCORE_CREX_GPIO3,
+ UPFPGA_UPCORE_CREX_GPIO4,
+ UPFPGA_UPCORE_CREX_GPIO9,
+};
+
+static struct pinctrl_pin_desc upboard_upcore_crex_pins[] = {
+ UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C0_SDA, &upboard_i2c0_reg),
+ UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C0_SCL, &upboard_i2c0_reg),
+ UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C1_SDA, &upboard_i2c1_reg),
+ UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C1_SCL, &upboard_i2c1_reg),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_CS0),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_CS1),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_MOSI),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_MISO),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_CLK),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, UART1_TXD),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, UART1_RXD),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, PWM0),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, PWM1),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, I2S2_FRM),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, I2S2_CLK),
+ UPBOARD_UPCORE_CREX_PIN_NAME(0, I2S2_RX),
+ /* register 1 */
+ UPBOARD_UPCORE_CREX_PIN_NAME(1, I2S2_TX),
+ UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO0),
+ UPBOARD_UPCORE_CREX_PIN_FUNC(1, GPIO2, &upboard_adc0_reg),
+ UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO3),
+ UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO4),
+ UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO9),
+};
+
+static unsigned int upboard_upcore_crex_rpi_mapping[] = {
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C0_SDA),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C0_SCL),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C1_SDA),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C1_SCL),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO0),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO2),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO3),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_CS1),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_CS0),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_MISO),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_MOSI),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_CLK),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, PWM0),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, PWM1),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, UART1_TXD),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, UART1_RXD),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO9),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO4),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2S2_CLK),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2S2_FRM),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2S2_RX),
+ UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, I2S2_TX),
+};
+
+/*
+ * UP Core board + CRST02 carrier board data
+ */
+
+#define upboard_upcore_crst02_pins upboard_upcore_crex_pins
+#define upboard_upcore_crst02_rpi_mapping upboard_upcore_crex_rpi_mapping
+
+static int upboard_set_mux(struct pinctrl_dev *pctldev, unsigned int function,
+ unsigned int group)
+{
+ return 0;
+};
+
+static int upboard_fpga_request_enable(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned int pin)
+{
+ const struct pin_desc * const pd = pin_desc_get(pctldev, pin);
+ const struct upboard_pin *p;
+ int ret;
+
+ if (!pd)
+ return -EINVAL;
+
+ p = pd->drv_data;
+ if (p->funcbit) {
+ ret = regmap_field_write(p->funcbit, 0);
+ if (ret)
+ return ret;
+ }
+
+ if (p->enbit) {
+ ret = regmap_field_write(p->enbit, 1);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+};
+
+static int upboard_fpga_request_free(struct pinctrl_dev *pctldev,
+ unsigned int pin)
+{
+ const struct pin_desc * const pd = pin_desc_get(pctldev, pin);
+ const struct upboard_pin *p;
+ int ret;
+
+ if (!pd)
+ return -EINVAL;
+
+ p = pd->drv_data;
+ if (p->funcbit) {
+ ret = regmap_field_write(p->funcbit, 1);
+ if (ret)
+ return ret;
+ }
+
+ if (p->enbit) {
+ ret = regmap_field_write(p->enbit, 0);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+};
+
+static int upboard_fpga_set_direction(struct pinctrl_dev *pctldev,
+ struct pinctrl_gpio_range *range,
+ unsigned int pin, bool input)
+{
+ const struct pin_desc * const pd = pin_desc_get(pctldev, pin);
+ const struct upboard_pin *p;
+
+ if (!pd)
+ return -EINVAL;
+
+ p = pd->drv_data;
+ upboard_fpga_request_enable(pctldev, range, pin);
+
+ return regmap_field_write(p->dirbit, input);
+};
+
+static int upboard_get_functions_count(struct pinctrl_dev *pctldev)
+{
+ return 0;
+}
+
+static const char *upboard_get_function_name(struct pinctrl_dev *pctldev,
+ unsigned int selector)
+{
+ return NULL;
+}
+
+static int upboard_get_function_groups(struct pinctrl_dev *pctldev,
+ unsigned int selector,
+ const char * const **groups,
+ unsigned int *num_groups)
+{
+ *groups = NULL;
+ *num_groups = 0;
+ return 0;
+}
+
+static const struct pinmux_ops upboard_pinmux_ops = {
+ .get_functions_count = upboard_get_functions_count,
+ .get_function_groups = upboard_get_function_groups,
+ .get_function_name = upboard_get_function_name,
+ .set_mux = upboard_set_mux,
+ .gpio_request_enable = upboard_fpga_request_enable,
+ .gpio_set_direction = upboard_fpga_set_direction,
+};
+
+static int upboard_get_groups_count(struct pinctrl_dev *pctldev)
+{
+ return 0;
+}
+
+static const char *upboard_get_group_name(struct pinctrl_dev *pctldev,
+ unsigned int selector)
+{
+ return NULL;
+}
+
+static const struct pinctrl_ops upboard_pinctrl_ops = {
+ .get_groups_count = upboard_get_groups_count,
+ .get_group_name = upboard_get_group_name,
+};
+
+static struct pinctrl_desc upboard_up_pinctrl_desc = {
+ .pins = upboard_up_pins,
+ .npins = ARRAY_SIZE(upboard_up_pins),
+ .pctlops = &upboard_pinctrl_ops,
+ .pmxops = &upboard_pinmux_ops,
+ .owner = THIS_MODULE,
+};
+
+static struct pinctrl_desc upboard_up2_pinctrl_desc = {
+ .pins = upboard_up2_pins,
+ .npins = ARRAY_SIZE(upboard_up2_pins),
+ .pctlops = &upboard_pinctrl_ops,
+ .pmxops = &upboard_pinmux_ops,
+ .owner = THIS_MODULE,
+};
+
+static struct pinctrl_desc upboard_upcore_crex_pinctrl_desc = {
+ .pins = upboard_upcore_crex_pins,
+ .npins = ARRAY_SIZE(upboard_upcore_crex_pins),
+ .pctlops = &upboard_pinctrl_ops,
+ .pmxops = &upboard_pinmux_ops,
+ .owner = THIS_MODULE,
+};
+
+static struct pinctrl_desc upboard_upcore_crst02_pinctrl_desc = {
+ .pins = upboard_upcore_crst02_pins,
+ .npins = ARRAY_SIZE(upboard_upcore_crst02_pins),
+ .pctlops = &upboard_pinctrl_ops,
+ .pmxops = &upboard_pinmux_ops,
+ .owner = THIS_MODULE,
+};
+
+static void upboard_alt_func_enable(struct gpio_chip *gc, const char *name)
+{
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ int offset[gc->ngpio];
+ int i, j, cnt;
+ bool input = false;
+
+ /* find all pins */
+ for (i = 0, cnt = 0; i < pctrl->pctldesc->npins; i++) {
+ if (strstr(pctrl->pctldesc->pins[i].name, name))
+ offset[cnt++] = i;
+ }
+ for (i = 0; i < cnt; i++) {
+ if (pinctrl_gpio_request(pctrl->pins[offset[i]].gpio) == -EBUSY)
+ return; /* this pin is being used */
+ pinctrl_gpio_free(pctrl->pins[offset[i]].gpio);
+ }
+ /* change to alternate function */
+ for (i = 0; i < cnt; i++) {
+ if (pctrl->pins[offset[i]].regs == NULL)
+ continue;
+
+ if (strstr(pctrl->pctldesc->pins[offset[i]].name, "I2C")) {
+ int mode = 1;
+ unsigned int val;
+
+ switch (pctrl->ident) {
+ case 15:
+ mode = 2;
+ break;
+ }
+
+ val = readl(pctrl->pins[offset[i]].regs) |
+ mode<<PADCFG0_PMODE_SHIFT;
+ writel(val, pctrl->pins[offset[i]].regs);
+ upboard_fpga_request_free(pctrl->pctldev, offset[i]);
+ continue;
+ } else if (strstr(pctrl->pctldesc->pins[offset[i]].name,
+ "UART")) {
+ int mode = 1;
+ unsigned int val;
+
+ switch (pctrl->ident) {
+ case 13:
+ case 14:
+ mode = 4;
+ break;
+ case 15:
+ mode = 2;
+ break;
+ }
+
+ val = readl(pctrl->pins[offset[i]].regs) |
+ mode<<PADCFG0_PMODE_SHIFT;
+ writel(val, pctrl->pins[offset[i]].regs);
+ } else if (strstr(pctrl->pctldesc->pins[offset[i]].name,
+ "SPI")) {
+ int mode = 1;
+ unsigned int val;
+
+ switch (pctrl->ident) {
+ case 15:
+ mode = 7;
+ break;
+ }
+
+ val = readl(pctrl->pins[offset[i]].regs) |
+ mode<<PADCFG0_PMODE_SHIFT;
+ writel(val, pctrl->pins[offset[i]].regs);
+ } else if (strstr(pctrl->pctldesc->pins[offset[i]].name,
+ "I2S")) {
+ int mode = 1;
+ unsigned int val;
+
+ switch (pctrl->ident) {
+ case 15:
+ mode = 4;
+ break;
+ }
+
+ val = readl(pctrl->pins[offset[i]].regs) |
+ mode<<PADCFG0_PMODE_SHIFT;
+ writel(val, pctrl->pins[offset[i]].regs);
+ } else {
+ unsigned int val;
+
+ val = readl(pctrl->pins[offset[i]].regs) |
+ 1<<PADCFG0_PMODE_SHIFT;
+ writel(val, pctrl->pins[offset[i]].regs);
+ }
+
+ /* input pins */
+ if (strstr(pctrl->pctldesc->pins[offset[i]].name, "RX"))
+ input = true;
+ if (strstr(pctrl->pctldesc->pins[offset[i]].name, "CTS"))
+ input = true;
+ if (strstr(pctrl->pctldesc->pins[offset[i]].name, "ADC"))
+ input = true;
+ if (strstr(pctrl->pctldesc->pins[offset[i]].name, "MISO"))
+ input = true;
+ if (strstr(pctrl->pctldesc->pins[offset[i]].name, "DIN"))
+ input = true;
+ upboard_fpga_set_direction(pctrl->pctldev, NULL, offset[i],
+ input);
+ }
+}
+
+static int upboard_rpi_to_native_gpio(struct gpio_chip *gc, unsigned int gpio)
+{
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ unsigned int pin = pctrl->rpi_mapping[gpio];
+ struct pinctrl_gpio_range *range;
+
+ range = pinctrl_find_gpio_range_from_pin(pctrl->pctldev, pin);
+ if (!range)
+ return -ENODEV;
+
+ return range->base;
+}
+
+static int upboard_gpio_request(struct gpio_chip *gc, unsigned int offset)
+{
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ int gpio = upboard_rpi_to_native_gpio(gc, offset);
+
+ if (gpio < 0)
+ return gpio;
+
+ return pinctrl_gpio_request(gpio);
+}
+
+static void upboard_gpio_free(struct gpio_chip *gc, unsigned int offset)
+{
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ int gpio = upboard_rpi_to_native_gpio(gc, offset);
+ unsigned int pin = pctrl->rpi_mapping[offset];
+ char name[strlen(pctrl->pctldesc->pins[pin].name)];
+ char *p;
+
+ if (gpio < 0)
+ return;
+
+ pinctrl_gpio_free(gpio);
+
+ strcpy(name, pctrl->pctldesc->pins[pin].name);
+ p = name;
+ upboard_alt_func_enable(gc, strsep(&p, "_"));
+}
+
+static int upboard_gpio_get(struct gpio_chip *gc, unsigned int offset)
+{
+ int gpio = upboard_rpi_to_native_gpio(gc, offset);
+
+ if (gpio < 0)
+ return gpio;
+
+ return gpiod_get_value(gpio_to_desc(gpio));
+}
+
+static void upboard_gpio_set(struct gpio_chip *gc, unsigned int offset,
+ int value)
+{
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ unsigned int pin = pctrl->rpi_mapping[offset];
+ int gpio = upboard_rpi_to_native_gpio(gc, offset);
+
+ if (gpio < 0)
+ return;
+
+ gpiod_set_value(gpio_to_desc(gpio), value);
+
+ /* APL03 open drain GPIO */
+ if (pctrl->ident == 9) {
+ if (pin == 0 || pin == 1) {
+ int val = readl(pctrl->pins[pin].regs);
+
+ if (value)
+ val |= PADCFG0_GPIOTXDIS;
+ else
+ val &= ~PADCFG0_GPIOTXDIS;
+ writel(val, pctrl->pins[pin].regs);
+ }
+ }
+}
+
+static int upboard_gpio_direction_input(struct gpio_chip *gc,
+ unsigned int offset)
+{
+ int gpio = upboard_rpi_to_native_gpio(gc, offset);
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ unsigned int pin = pctrl->rpi_mapping[offset];
+ struct pinctrl_gpio_range *range;
+
+ range = pinctrl_find_gpio_range_from_pin(pctrl->pctldev, pin);
+ upboard_fpga_set_direction(pctrl->pctldev, range, pin, true);
+
+ if (gpio < 0)
+ return gpio;
+
+ return gpiod_direction_input(gpio_to_desc(gpio));
+}
+
+static int upboard_gpio_direction_output(struct gpio_chip *gc,
+ unsigned int offset, int value)
+{
+ int gpio = upboard_rpi_to_native_gpio(gc, offset);
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ unsigned int pin = pctrl->rpi_mapping[offset];
+ struct pinctrl_gpio_range *range;
+
+ range = pinctrl_find_gpio_range_from_pin(pctrl->pctldev, pin);
+ upboard_fpga_set_direction(pctrl->pctldev, range, pin, false);
+
+ if (gpio < 0)
+ return gpio;
+
+ return gpiod_direction_output(gpio_to_desc(gpio), value);
+}
+
+static struct gpio_chip upboard_gpio_chip = {
+ .label = "Raspberry Pi compatible UP GPIO",
+ .base = 0,
+ .request = upboard_gpio_request,
+ .free = upboard_gpio_free,
+ .get = upboard_gpio_get,
+ .set = upboard_gpio_set,
+ .direction_input = upboard_gpio_direction_input,
+ .direction_output = upboard_gpio_direction_output,
+ .owner = THIS_MODULE,
+};
+
+/* DMI Matches for older bios without fpga initialization */
+static const struct dmi_system_id upboard_dmi_table[] __initconst = {
+ {
+ .matches = { /* UP */
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-CHT01"),
+ DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.4"),
+ },
+ },
+ {
+ .matches = { /* UP2 */
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-APL01"),
+ DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.3"),
+ },
+ },
+ {
+ .ident = 9,
+ .matches = { /* UP2 */
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-APL03"),
+ },
+ },
+ {
+ .ident = 13,
+ .matches = { /* UP 6000 */
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "UPN-EHL01"),
+ },
+ },
+ {
+ .ident = 14,
+ .matches = { /* UP squared v2 */
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "UPS-EHL01"),
+ },
+ },
+ {
+ .ident = 15,
+ .matches = { /* UP Xtreme i12 */
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"),
+ DMI_EXACT_MATCH(DMI_BOARD_NAME, "UPX-ADLP01"),
+ },
+ },
+ { } /* Terminating entry */
+};
+
+bool regmap_check_writeable(struct upboard_fpga *fpga, unsigned int reg)
+{
+ if (!fpga)
+ return -ENOMEM;
+
+ if (fpga->regmapconf->max_register &&
+ reg > fpga->regmapconf->max_register)
+ return false;
+
+ if (fpga->regmapconf->writeable_reg)
+ return fpga->regmapconf->writeable_reg(fpga->dev, reg);
+
+ if (fpga->regmapconf->wr_table)
+ return regmap_check_range_table(fpga->regmap, reg,
+ fpga->regmapconf->wr_table);
+
+ return true;
+}
+
+static void __iomem *upboard_get_regs(struct gpio_chip *gc, unsigned int pin,
+ unsigned int reg)
+{
+ struct platform_device *pdev = to_platform_device(gc->parent);
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ size_t nregs;
+ void __iomem *base;
+ u32 offset, value;
+
+ /* UP ADL/TGL */
+ if (strstr(dev_name(&pdev->dev), "INTC1055:00") ||
+ strstr(dev_name(&pdev->dev), "INT34C5:00")) {
+ struct intel_pinctrl *intel_pctrl = gpiochip_get_data(gc);
+ struct pinctrl_dev *pctldev;
+ struct pinctrl_gpio_range *range;
+
+ pctldev = intel_pctrl->pctldev;
+ if (pctldev == NULL)
+ return NULL;
+
+ range = pinctrl_find_gpio_range_from_pin(pctldev, pin);
+ if (range)
+ pin = pin - range->pin_base;
+ else
+ return NULL;
+
+ if (range->pin_base < 67)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ else if (range->pin_base < 171)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ else if (range->pin_base < 260)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+ else
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 3);
+ }
+
+ if (IS_ERR(res)) {
+ dev_err(gc->parent, "upboard resource get failed");
+ return NULL;
+ }
+
+ base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ offset = readl(base + PADBAR);
+ value = readl(base + REVID);
+
+ if (((value & REVID_MASK) >> REVID_SHIFT) >= 0x94)
+ nregs = 4;
+ else
+ nregs = 2;
+
+ return base + offset + reg + pin * nregs * 4;
+}
+
+int upboard_acpi_node_pin_mapping(struct upboard_fpga *fpga,
+ struct upboard_pinctrl *pctrl,
+ const char *propname,
+ const char *pinctl_name,
+ unsigned int pin_offset)
+{
+ struct gpio_descs *descs;
+ int ret, i;
+
+ descs = devm_gpiod_get_array(fpga->dev, propname, GPIOD_ASIS);
+ if (IS_ERR(descs)) {
+ ret = PTR_ERR(descs);
+ if (ret != -EPROBE_DEFER)
+ dev_err(fpga->dev, "Failed to get %s gpios", propname);
+ return ret;
+ }
+
+ for (i = 0; i < descs->ndescs; i++) {
+ struct gpio_desc *desc = descs->desc[i];
+ struct gpio_chip *gc = gpiod_to_chip(desc);
+
+ pctrl->pins[i].gpio = desc_to_gpio(desc);
+ pctrl->pins[i].base = gc->base;
+ pctrl->pins[i].irq = gpiod_to_irq(desc);
+ pctrl->pins[i].regs =
+ upboard_get_regs(gc,
+ desc_to_gpio(desc) - gc->base,
+ PADCFG0);
+
+ /* The GPIOs may not be contiguous, so add them 1-by-1 */
+ ret = gpiochip_add_pin_range(gpiod_to_chip(desc), pinctl_name,
+ desc_to_gpio(desc) - gc->base,
+ pin_offset + i, 1);
+ if (ret)
+ return ret;
+ }
+
+ /* dispose acpi resource */
+ devm_gpiod_put_array(fpga->dev, descs);
+
+ return ret;
+}
+
+static void upboard_irq_ack(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+
+ dev_info(NULL, "upboard_irq_ack");
+}
+
+static void upboard_irq_mask(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+
+ dev_info(NULL, "upboard_irq_mask");
+}
+
+static void upboard_irq_unmask(struct irq_data *d)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+
+ dev_info(NULL, "upboard_irq_unmask");
+}
+
+static int upboard_irq_type(struct irq_data *d, unsigned int type)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+
+ dev_info(NULL, "upboard_irq_type");
+
+ return 0;
+}
+
+static irqreturn_t upboard_gpio_irq_handler(int irq, void *data)
+{
+ generic_handle_irq(irq);
+ return IRQ_HANDLED;
+}
+
+static int upboard_irq_chip_set_type(struct irq_data *data, unsigned int type)
+{
+ struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
+ struct upboard_pinctrl *pctrl = container_of(gc, struct upboard_pinctrl, chip);
+ unsigned int offset = irqd_to_hwirq(data);
+
+ data->parent_data = irq_get_irq_data(pctrl->pins[offset].irq);
+ if (data->parent_data) {
+ dev_info(NULL, "%s: no NULL", __func__);
+ return irq_chip_set_type_parent(data, type);
+ }
+
+ dev_info(NULL, "%s: NULL", __func__);
+ return 0;
+}
+
+static struct irq_chip upboard_gpio_irqchip = {
+ .name = "upboard-gpio-irq",
+ .irq_ack = upboard_irq_ack,
+ .irq_mask = upboard_irq_mask,
+ .irq_unmask = upboard_irq_unmask,
+ .irq_set_type = upboard_irq_chip_set_type,
+ .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE,
+};
+
+static int __init upboard_pinctrl_probe(struct platform_device *pdev)
+{
+ struct upboard_fpga * const fpga = dev_get_drvdata(pdev->dev.parent);
+ struct acpi_device * const adev = ACPI_COMPANION(&pdev->dev);
+ struct pinctrl_desc *pctldesc;
+ struct upboard_pinctrl *pctrl;
+ struct upboard_pin *pins;
+ const struct dmi_system_id *system_id;
+ const char *hid;
+ const unsigned int *rpi_mapping;
+ unsigned int ngpio;
+ int ret;
+ int i;
+
+ if (!fpga)
+ return -EINVAL;
+
+ if (!adev)
+ return -ENODEV;
+
+ hid = acpi_device_hid(adev);
+ if (!strcmp(hid, "AANT0F00") || !strcmp(hid, "AANT0F04") ||
+ !strcmp(hid, "AANT0000")) {
+ pctldesc = &upboard_up_pinctrl_desc;
+ rpi_mapping = upboard_up_rpi_mapping;
+ ngpio = ARRAY_SIZE(upboard_up_rpi_mapping);
+ } else if (!strcmp(hid, "AANT0F01")) {
+ pctldesc = &upboard_up2_pinctrl_desc;
+ rpi_mapping = upboard_up2_rpi_mapping;
+ ngpio = ARRAY_SIZE(upboard_up2_rpi_mapping);
+ } else if (!strcmp(hid, "AANT0F02")) {
+ pctldesc = &upboard_upcore_crex_pinctrl_desc;
+ rpi_mapping = upboard_upcore_crex_rpi_mapping;
+ ngpio = ARRAY_SIZE(upboard_upcore_crex_rpi_mapping);
+ } else if (!strcmp(hid, "AANT0F03")) {
+ pctldesc = &upboard_upcore_crst02_pinctrl_desc;
+ rpi_mapping = upboard_upcore_crst02_rpi_mapping;
+ ngpio = ARRAY_SIZE(upboard_upcore_crst02_rpi_mapping);
+ } else
+ return -ENODEV;
+
+ pctldesc->name = dev_name(&pdev->dev);
+
+ pins = devm_kzalloc(&pdev->dev,
+ sizeof(*pins) * pctldesc->npins,
+ GFP_KERNEL);
+ if (!pins)
+ return -ENOMEM;
+
+ /* initialise pins */
+ for (i = 0; i < pctldesc->npins; i++) {
+ struct upboard_pin *pin = &pins[i];
+ struct pinctrl_pin_desc *pd =
+ (struct pinctrl_pin_desc *) &pctldesc->pins[i];
+ struct reg_field fldconf = {0};
+ unsigned int regoff = (pd->number / UPFPGA_REGISTER_SIZE);
+ unsigned int lsb = pd->number % UPFPGA_REGISTER_SIZE;
+
+ pin->funcbit = NULL;
+
+ if (pd->drv_data) {
+ fldconf = *(struct reg_field *)pd->drv_data;
+ if (!regmap_check_writeable(fpga, fldconf.reg))
+ return -EINVAL;
+
+ pin->funcbit = devm_regmap_field_alloc(&pdev->dev,
+ fpga->regmap,
+ fldconf);
+ if (IS_ERR(pin->funcbit))
+ return PTR_ERR(pin->funcbit);
+ }
+
+ pin->enbit = NULL;
+ fldconf.reg = UPFPGA_REG_GPIO_EN0 + regoff;
+ fldconf.lsb = lsb;
+ fldconf.msb = lsb;
+
+ /* some platform don't have enable bit, ignore if not present */
+ if (regmap_check_writeable(fpga, fldconf.reg)) {
+ pin->enbit = devm_regmap_field_alloc(&pdev->dev,
+ fpga->regmap,
+ fldconf);
+ if (IS_ERR(pin->enbit))
+ return PTR_ERR(pin->enbit);
+ }
+
+ fldconf.reg = UPFPGA_REG_GPIO_DIR0 + regoff;
+ fldconf.lsb = lsb;
+ fldconf.msb = lsb;
+
+ if (!regmap_check_writeable(fpga, fldconf.reg))
+ return -EINVAL;
+
+ pin->dirbit = devm_regmap_field_alloc(&pdev->dev,
+ fpga->regmap,
+ fldconf);
+ if (IS_ERR(pin->dirbit))
+ return PTR_ERR(pin->dirbit);
+
+ pd->drv_data = pin;
+ }
+
+ /* create a new pinctrl device and register it */
+ pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
+ if (!pctrl)
+ return -ENOMEM;
+
+ pctrl->regmap = fpga->regmap;
+ pctrl->rpi_mapping = rpi_mapping;
+ pctrl->chip = upboard_gpio_chip;
+ pctrl->pctldesc = pctldesc;
+ pctrl->chip.parent = &pdev->dev;
+ pctrl->chip.ngpio = ngpio;
+ pctrl->pins = pins;
+ pctrl->chip.irq.chip = &upboard_gpio_irqchip;
+
+ ret = devm_gpiochip_add_data(&pdev->dev, &pctrl->chip, pctrl);
+ if (ret)
+ return ret;
+
+ pctrl->pctldev = devm_pinctrl_register(&pdev->dev, pctldesc, pctrl);
+ if (IS_ERR(pctrl->pctldev))
+ return PTR_ERR(pctrl->pctldev);
+
+ /* add acpi pin mapping according to external-gpios key */
+ ret = upboard_acpi_node_pin_mapping(fpga, pctrl,
+ "external",
+ dev_name(&pdev->dev),
+ 0);
+ if (ret)
+ return ret;
+
+ upboard_alt_func_enable(&pctrl->chip, "I2C");
+ upboard_alt_func_enable(&pctrl->chip, "SPI");
+ upboard_alt_func_enable(&pctrl->chip, "UART");
+ upboard_alt_func_enable(&pctrl->chip, "I2S");
+ upboard_alt_func_enable(&pctrl->chip, "PWM");
+ upboard_alt_func_enable(&pctrl->chip, "ADC");
+ upboard_alt_func_enable(&pctrl->chip, "NONAME"); /* for UP2 I2C pins */
+
+ return ret;
+}
+
+static struct platform_driver upboard_pinctrl_driver = {
+ .driver = {
+ .name = "upboard-pinctrl",
+ },
+};
+module_platform_driver_probe(upboard_pinctrl_driver, upboard_pinctrl_probe);
+
+MODULE_AUTHOR("Gary Wang <garywang@...on.com.tw>");
+MODULE_AUTHOR("Javier Arteaga <javier@...tex.com>");
+MODULE_AUTHOR("Dan O'Donovan <dan@...tex.com>");
+MODULE_AUTHOR("Nicola Lunghi <nicolal@...tex.com>");
+MODULE_DESCRIPTION("UP Board HAT pin controller driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:upboard-pinctrl");
--
2.17.1
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