From f3ef38160e3dacb490483eb2104b4ce05cd97058 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 23 Nov 2020 11:23:46 +0100 Subject: [PATCH] usb: isp1301-omap: Convert to use GPIO descriptors This modernized the ISP1301 a bit by switching it to provide a GPIO descriptor from the H2 board if used. Cc: Tony Lindgren Cc: Felipe Balbi Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20201123102346.48284-1-linus.walleij@linaro.org Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-omap1/board-h2.c | 22 ++++++++++++++++++++-- drivers/usb/phy/phy-isp1301-omap.c | 21 +++++++++++++-------- 2 files changed, 33 insertions(+), 10 deletions(-) diff --git a/arch/arm/mach-omap1/board-h2.c b/arch/arm/mach-omap1/board-h2.c index cb7ce627ffe8..c40cf5ef8607 100644 --- a/arch/arm/mach-omap1/board-h2.c +++ b/arch/arm/mach-omap1/board-h2.c @@ -16,6 +16,7 @@ * Copyright (C) 2004 Nokia Corporation by Imre Deak */ #include +#include #include #include #include @@ -46,6 +47,9 @@ #include "common.h" #include "board-h2.h" +/* The first 16 SoC GPIO lines are on this GPIO chip */ +#define OMAP_GPIO_LABEL "gpio-0-15" + /* At OMAP1610 Innovator the Ethernet is directly connected to CS1 */ #define OMAP1610_ETHR_START 0x04000300 @@ -334,7 +338,19 @@ static struct i2c_board_info __initdata h2_i2c_board_info[] = { I2C_BOARD_INFO("tps65010", 0x48), .platform_data = &tps_board, }, { - I2C_BOARD_INFO("isp1301_omap", 0x2d), + .type = "isp1301_omap", + .addr = 0x2d, + .dev_name = "isp1301", + }, +}; + +static struct gpiod_lookup_table isp1301_gpiod_table = { + .dev_id = "isp1301", + .table = { + /* Active low since the irq triggers on falling edge */ + GPIO_LOOKUP(OMAP_GPIO_LABEL, 2, + NULL, GPIO_ACTIVE_LOW), + { }, }, }; @@ -406,8 +422,10 @@ static void __init h2_init(void) h2_smc91x_resources[1].end = gpio_to_irq(0); platform_add_devices(h2_devices, ARRAY_SIZE(h2_devices)); omap_serial_init(); + + /* ISP1301 IRQ wired at M14 */ + omap_cfg_reg(M14_1510_GPIO2); h2_i2c_board_info[0].irq = gpio_to_irq(58); - h2_i2c_board_info[1].irq = gpio_to_irq(2); omap_register_i2c_bus(1, 100, h2_i2c_board_info, ARRAY_SIZE(h2_i2c_board_info)); omap1_usb_init(&h2_usb_config); diff --git a/drivers/usb/phy/phy-isp1301-omap.c b/drivers/usb/phy/phy-isp1301-omap.c index 4a6462c92ef2..00506fb01bda 100644 --- a/drivers/usb/phy/phy-isp1301-omap.c +++ b/drivers/usb/phy/phy-isp1301-omap.c @@ -1208,9 +1208,6 @@ static int isp1301_remove(struct i2c_client *i2c) #ifdef CONFIG_USB_OTG otg_unbind(isp); #endif - if (machine_is_omap_h2()) - gpio_free(2); - set_bit(WORK_STOP, &isp->todo); del_timer_sync(&isp->timer); flush_work(&isp->work); @@ -1480,6 +1477,7 @@ isp1301_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { int status; struct isp1301 *isp; + int irq; if (the_transceiver) return 0; @@ -1543,20 +1541,27 @@ isp1301_probe(struct i2c_client *i2c, const struct i2c_device_id *id) #endif if (machine_is_omap_h2()) { + struct gpio_desc *gpiod; + /* full speed signaling by default */ isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_SPEED); isp1301_set_bits(isp, ISP1301_MODE_CONTROL_2, MC2_SPD_SUSP_CTRL); - /* IRQ wired at M14 */ - omap_cfg_reg(M14_1510_GPIO2); - if (gpio_request(2, "isp1301") == 0) - gpio_direction_input(2); + gpiod = devm_gpiod_get(&i2c->dev, NULL, GPIOD_IN); + if (IS_ERR(gpiod)) { + dev_err(&i2c->dev, "cannot obtain H2 GPIO\n"); + goto fail; + } + gpiod_set_consumer_name(gpiod, "isp1301"); + irq = gpiod_to_irq(gpiod); isp->irq_type = IRQF_TRIGGER_FALLING; + } else { + irq = i2c->irq; } - status = request_irq(i2c->irq, isp1301_irq, + status = request_irq(irq, isp1301_irq, isp->irq_type, DRIVER_NAME, isp); if (status < 0) { dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n",