Merge branch 'mips-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git

arch/mips/include/asm/gio_device.h

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #include <linux/device.h>
-#include <linux/mod_devicetable.h>
 
 struct gio_device_id {
 	__u8 id;

arch/mips/include/asm/txx9/generic.h

@@ -45,7 +45,6 @@ extern int (*txx9_irq_dispatch)(int pending);
 const char *prom_getenv(const char *name);
 void txx9_wdt_init(unsigned long base);
 void txx9_wdt_now(unsigned long base);
-void txx9_spi_init(int busid, unsigned long base, int irq);
 void txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr);
 void txx9_sio_init(unsigned long baseaddr, int irq,
 		   unsigned int line, unsigned int sclk, int nocts);
@@ -80,15 +79,9 @@ static inline unsigned int __fls8(unsigned char x)
 	return r;
 }
 
-void txx9_iocled_init(unsigned long baseaddr,
-		      int basenum, unsigned int num, int lowactive,
+void txx9_iocled_init(unsigned long baseaddr, unsigned int num,
 		      const char *color, char **deftriggers);
 
-/* 7SEG LED */
-void txx9_7segled_init(unsigned int num,
-		       void (*putc)(unsigned int pos, unsigned char val));
-int txx9_7segled_putc(unsigned int pos, char c);
-
 void __init txx9_aclc_init(unsigned long baseaddr, int irq,
 			   unsigned int dmac_id,
 			   unsigned int dma_chan_out,

arch/mips/include/asm/txx9/tx4938.h

@@ -281,7 +281,6 @@ void tx4938_wdt_init(void);
 void tx4938_setup(void);
 void tx4938_time_init(unsigned int tmrnr);
 void tx4938_sio_init(unsigned int sclk, unsigned int cts_mask);
-void tx4938_spi_init(int busid);
 void tx4938_ethaddr_init(unsigned char *addr0, unsigned char *addr1);
 int tx4938_report_pciclk(void);
 void tx4938_report_pci1clk(void);

arch/mips/include/asm/txx9pio.h

@@ -23,7 +23,6 @@ struct txx9_pio_reg {
 	__u32 maskext;
 };
 
-int txx9_gpio_init(unsigned long baseaddr,
-		   unsigned int base, unsigned int num);
+int txx9_gpio_init(unsigned long baseaddr, unsigned int num);
 
 #endif /* __ASM_TXX9PIO_H */

arch/mips/kernel/gpio_txx9.c

@@ -76,13 +76,12 @@ static struct gpio_chip txx9_gpio_chip = {
 	.label = "TXx9",
 };
 
-int __init txx9_gpio_init(unsigned long baseaddr,
-			  unsigned int base, unsigned int num)
+int __init txx9_gpio_init(unsigned long baseaddr, unsigned int num)
 {
 	txx9_pioptr = ioremap(baseaddr, sizeof(struct txx9_pio_reg));
 	if (!txx9_pioptr)
 		return -ENODEV;
-	txx9_gpio_chip.base = base;
+	txx9_gpio_chip.base = -1;
 	txx9_gpio_chip.ngpio = num;
 	return gpiochip_add_data(&txx9_gpio_chip, NULL);
 }

arch/mips/kernel/proc.c

@@ -109,7 +109,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		seq_puts(m, " mips64r5");
 	if (cpu_has_mips64r6)
 		seq_puts(m, " mips64r6");
-	seq_puts(m, "\n");
+	seq_putc(m, '\n');
 
 	seq_puts(m, "ASEs implemented\t:");
 	if (cpu_has_mips16)
@@ -273,7 +273,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		seq_puts(m, " mm_sysad");
 	if (cpu_has_mm_full)
 		seq_puts(m, " mm_full");
-	seq_puts(m, "\n");
+	seq_putc(m, '\n');
 
 	seq_printf(m, "shadow register sets\t: %d\n",
 		      cpu_data[n].srsets);

arch/mips/txx9/Kconfig

@@ -37,7 +37,6 @@ config SOC_TX4927
 	select IRQ_TXX9
 	select PCI_TX4927
 	select GPIO_TXX9
-	select GPIOLIB_LEGACY
 
 config SOC_TX4938
 	bool

arch/mips/txx9/generic/setup.c

@@ -19,6 +19,7 @@
 #include <linux/clkdev.h>
 #include <linux/err.h>
 #include <linux/gpio/driver.h>
+#include <linux/gpio/machine.h>
 #include <linux/platform_device.h>
 #include <linux/platform_data/txx9/ndfmc.h>
 #include <linux/serial_core.h>
@@ -341,23 +342,6 @@ void txx9_wdt_now(unsigned long base)
 		     &tmrptr->tcr);
 }
 
-/* SPI support */
-void __init txx9_spi_init(int busid, unsigned long base, int irq)
-{
-	struct resource res[] = {
-		{
-			.start	= base,
-			.end	= base + 0x20 - 1,
-			.flags	= IORESOURCE_MEM,
-		}, {
-			.start	= irq,
-			.flags	= IORESOURCE_IRQ,
-		},
-	};
-	platform_device_register_simple("spi_txx9", busid,
-					res, ARRAY_SIZE(res));
-}
-
 void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
 {
 	struct platform_device *pdev =
@@ -586,7 +570,7 @@ void __init txx9_ndfmc_init(unsigned long baseaddr,
 #if IS_ENABLED(CONFIG_LEDS_GPIO)
 static DEFINE_SPINLOCK(txx9_iocled_lock);
 
-#define TXX9_IOCLED_MAXLEDS 8
+#define TXX9_IOCLED_MAXLEDS 3	/* rbtx4927 */
 
 struct txx9_iocled_data {
 	struct gpio_chip chip;
@@ -632,8 +616,16 @@ static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
 	return 0;
 }
 
-void __init txx9_iocled_init(unsigned long baseaddr,
-			     int basenum, unsigned int num, int lowactive,
+static struct gpiod_lookup_table txx9_iocled_table = {
+	.table = {
+		GPIO_LOOKUP_IDX("iocled", 0, NULL, 0, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("iocled", 1, NULL, 1, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("iocled", 2, NULL, 2, GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
+void __init txx9_iocled_init(unsigned long baseaddr, unsigned int num,
 			     const char *color, char **deftriggers)
 {
 	struct txx9_iocled_data *iocled;
@@ -659,14 +651,12 @@ void __init txx9_iocled_init(unsigned long baseaddr,
 	iocled->chip.direction_input = txx9_iocled_dir_in;
 	iocled->chip.direction_output = txx9_iocled_dir_out;
 	iocled->chip.label = "iocled";
-	iocled->chip.base = basenum;
+	iocled->chip.base = -1;
 	iocled->chip.ngpio = num;
 	if (gpiochip_add_data(&iocled->chip, iocled))
 		goto out_unmap;
-	if (basenum < 0)
-		basenum = iocled->chip.base;
 
-	pdev = platform_device_alloc("leds-gpio", basenum);
+	pdev = platform_device_alloc("leds-gpio", iocled->chip.base);
 	if (!pdev)
 		goto out_gpio;
 	iocled->pdata.num_leds = num;
@@ -676,14 +666,14 @@ void __init txx9_iocled_init(unsigned long baseaddr,
 		snprintf(iocled->names[i], sizeof(iocled->names[i]),
 			 "iocled:%s:%u", color, i);
 		led->name = iocled->names[i];
-		led->gpio = basenum + i;
-		led->active_low = lowactive;
 		if (deftriggers && *deftriggers)
 			led->default_trigger = *deftriggers++;
 	}
 	pdev->dev.platform_data = &iocled->pdata;
 	if (platform_device_add(pdev))
 		goto out_pdev;
+	txx9_iocled_table.dev_id = dev_name(&pdev->dev);
+	gpiod_add_lookup_table(&txx9_iocled_table);
 	return;
 
 out_pdev:
@@ -696,8 +686,7 @@ out_free:
 	kfree(iocled);
 }
 #else /* CONFIG_LEDS_GPIO */
-void __init txx9_iocled_init(unsigned long baseaddr,
-			     int basenum, unsigned int num, int lowactive,
+void __init txx9_iocled_init(unsigned long baseaddr, unsigned int num,
 			     const char *color, char **deftriggers)
 {
 }

arch/mips/txx9/generic/setup_tx4938.c

@@ -301,12 +301,6 @@ void __init tx4938_sio_init(unsigned int sclk, unsigned int cts_mask)
 	}
 }
 
-void __init tx4938_spi_init(int busid)
-{
-	txx9_spi_init(busid, TX4938_SPI_REG & 0xfffffffffULL,
-		      TXX9_IRQ_BASE + TX4938_IR_SPI);
-}
-
 void __init tx4938_ethaddr_init(unsigned char *addr0, unsigned char *addr1)
 {
 	u64 pcfg = __raw_readq(&tx4938_ccfgptr->pcfg);

arch/mips/txx9/rbtx4927/setup.c

@@ -49,6 +49,7 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/gpio/machine.h>
 #include <linux/leds.h>
 #include <asm/io.h>
 #include <asm/reboot.h>
@@ -157,18 +158,27 @@ static inline void tx4927_pci_setup(void) {}
 static inline void tx4937_pci_setup(void) {}
 #endif /* CONFIG_PCI */
 
+/* TX4927-SIO DTR on (PIO[15]) */
+GPIO_LOOKUP_SINGLE(sio_gpio_table, NULL, "TXx9", 15, "sio-dtr",
+		   GPIO_ACTIVE_HIGH);
+
 static void __init rbtx4927_gpio_init(void)
 {
-	/* TX4927-SIO DTR on (PIO[15]) */
-	gpio_request(15, "sio-dtr");
-	gpio_direction_output(15, 1);
+	struct gpio_desc *d;
+
+	gpiod_add_lookup_table(&sio_gpio_table);
+	d = gpiod_get(NULL, "sio-dtr", GPIOD_OUT_HIGH);
+	if (IS_ERR(d))
+		pr_err("Unable to get sio-dtr GPIO descriptor\n");
+	else
+		gpiod_put(d);
 
 	tx4927_sio_init(0, 0);
 }
 
 static void __init rbtx4927_arch_init(void)
 {
-	txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, 0, TX4927_NUM_PIO);
+	txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, TX4927_NUM_PIO);
 
 	rbtx4927_gpio_init();
 
@@ -177,7 +187,7 @@ static void __init rbtx4927_arch_init(void)
 
 static void __init rbtx4937_arch_init(void)
 {
-	txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, 0, TX4938_NUM_PIO);
+	txx9_gpio_init(TX4938_PIO_REG & 0xfffffffffULL, TX4938_NUM_PIO);
 
 	rbtx4927_gpio_init();
 
@@ -317,11 +327,19 @@ static void __init rbtx4927_mtd_init(void)
 		tx4927_mtd_init(i);
 }
 
+static struct gpiod_lookup_table rbtx4927_gpioled_table = {
+	.table = {
+		GPIO_LOOKUP_IDX("TXx9", 0, NULL, 0, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("TXx9", 1, NULL, 1, GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 static void __init rbtx4927_gpioled_init(void)
 {
 	static const struct gpio_led leds[] = {
-		{ .name = "gpioled:green:0", .gpio = 0, .active_low = 1, },
-		{ .name = "gpioled:green:1", .gpio = 1, .active_low = 1, },
+		{ .name = "gpioled:green:0", },
+		{ .name = "gpioled:green:1", },
 	};
 	static struct gpio_led_platform_data pdata = {
 		.num_leds = ARRAY_SIZE(leds),
@@ -332,8 +350,13 @@ static void __init rbtx4927_gpioled_init(void)
 	if (!pdev)
 		return;
 	pdev->dev.platform_data = &pdata;
-	if (platform_device_add(pdev))
+	if (platform_device_add(pdev)) {
 		platform_device_put(pdev);
+		return;
+	}
+
+	rbtx4927_gpioled_table.dev_id = dev_name(&pdev->dev);
+	gpiod_add_lookup_table(&rbtx4927_gpioled_table);
 }
 
 static void __init rbtx4927_device_init(void)
@@ -350,7 +373,7 @@ static void __init rbtx4927_device_init(void)
 		tx4938_aclc_init();
 	}
 	platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
-	txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL);
+	txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, 3, "green", NULL);
 	rbtx4927_gpioled_init();
 }
 

drivers/bcma/driver_gpio.c

@@ -19,6 +19,11 @@
 
 #define BCMA_GPIO_MAX_PINS	32
 
+const struct software_node bcma_gpio_swnode = {
+	.name = "bcma-gpio",
+};
+EXPORT_SYMBOL_GPL(bcma_gpio_swnode);
+
 static int bcma_gpio_get_value(struct gpio_chip *chip, unsigned gpio)
 {
 	struct bcma_drv_cc *cc = gpiochip_get_data(chip);
@@ -190,7 +195,20 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
 	chip->direction_input	= bcma_gpio_direction_input;
 	chip->direction_output	= bcma_gpio_direction_output;
 	chip->parent		= bus->dev;
-	chip->fwnode		= dev_fwnode(&cc->core->dev);
+
+	/*
+	 * Register software node only for the host SoC bus, unless there is
+	 * already a firmware node assigned. There is only one SoC instance
+	 * in the system, so there are no concerns with registration conflicts.
+	 */
+	if (bus->hosttype == BCMA_HOSTTYPE_SOC && !dev_fwnode(&cc->core->dev)) {
+		err = software_node_register(&bcma_gpio_swnode);
+		if (err)
+			return err;
+		chip->fwnode = software_node_fwnode(&bcma_gpio_swnode);
+	} else {
+		chip->fwnode = dev_fwnode(&cc->core->dev);
+	}
 
 	switch (bus->chipinfo.id) {
 	case BCMA_CHIP_ID_BCM4707:
@@ -219,20 +237,33 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
 
 	err = bcma_gpio_irq_init(cc);
 	if (err)
-		return err;
+		goto err_unregister_swnode;
 
 	err = gpiochip_add_data(chip, cc);
-	if (err) {
-		bcma_gpio_irq_exit(cc);
-		return err;
-	}
+	if (err)
+		goto err_irq_exit;
 
 	return 0;
+
+err_irq_exit:
+	bcma_gpio_irq_exit(cc);
+err_unregister_swnode:
+	if (bus->hosttype == BCMA_HOSTTYPE_SOC &&
+	    chip->fwnode && is_software_node(chip->fwnode)) {
+		software_node_unregister(&bcma_gpio_swnode);
+		chip->fwnode = NULL;
+	}
+	return err;
 }
 
 int bcma_gpio_unregister(struct bcma_drv_cc *cc)
 {
 	bcma_gpio_irq_exit(cc);
 	gpiochip_remove(&cc->gpio);
+	if (cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC &&
+	    cc->gpio.fwnode && is_software_node(cc->gpio.fwnode)) {
+		software_node_unregister(&bcma_gpio_swnode);
+		cc->gpio.fwnode = NULL;
+	}
 	return 0;
 }

drivers/ssb/driver_gpio.c

@@ -15,8 +15,14 @@
 #include <linux/interrupt.h>
 #include <linux/irqdomain.h>
 #include <linux/export.h>
+#include <linux/property.h>
 #include <linux/ssb/ssb.h>
 
+const struct software_node ssb_gpio_swnode = {
+	.name = "ssb-gpio",
+};
+EXPORT_SYMBOL_GPL(ssb_gpio_swnode);
+
 
 /**************************************************
  * Shared
@@ -232,6 +238,8 @@ static int ssb_gpio_chipco_init(struct ssb_bus *bus)
 	chip->to_irq		= ssb_gpio_to_irq;
 #endif
 	chip->ngpio		= 16;
+	if (bus->bustype == SSB_BUSTYPE_SSB)
+		chip->fwnode	= software_node_fwnode(&ssb_gpio_swnode);
 	/* There is just one SoC in one device and its GPIO addresses should be
 	 * deterministic to address them more easily. The other buses could get
 	 * a random base number.
@@ -433,10 +441,12 @@ static int ssb_gpio_extif_init(struct ssb_bus *bus)
 	 * deterministic to address them more easily. The other buses could get
 	 * a random base number.
 	 */
-	if (bus->bustype == SSB_BUSTYPE_SSB)
-		chip->base		= 0;
-	else
-		chip->base		= -1;
+	if (bus->bustype == SSB_BUSTYPE_SSB) {
+		chip->base	= 0;
+		chip->fwnode	= software_node_fwnode(&ssb_gpio_swnode);
+	} else {
+		chip->base	= -1;
+	}
 
 	err = ssb_gpio_irq_extif_domain_init(bus);
 	if (err)
@@ -464,11 +474,33 @@ static int ssb_gpio_extif_init(struct ssb_bus *bus)
 
 int ssb_gpio_init(struct ssb_bus *bus)
 {
+	int err = 0;
+
+	/*
+	 * Register software node only for the host SoC bus. There is only
+	 * one SoC instance in the system, so there are no concerns with
+	 * registration conflicts.
+	 */
+	if (bus->bustype == SSB_BUSTYPE_SSB) {
+		err = software_node_register(&ssb_gpio_swnode);
+		if (err)
+			return err;
+	}
+
 	if (ssb_chipco_available(&bus->chipco))
-		return ssb_gpio_chipco_init(bus);
+		err = ssb_gpio_chipco_init(bus);
 	else if (ssb_extif_available(&bus->extif))
-		return ssb_gpio_extif_init(bus);
-	return -1;
+		err = ssb_gpio_extif_init(bus);
+	else
+		err = -ENODEV;
+
+	if (err) {
+		if (bus->bustype == SSB_BUSTYPE_SSB)
+			software_node_unregister(&ssb_gpio_swnode);
+		return err;
+	}
+
+	return 0;
 }
 
 int ssb_gpio_unregister(struct ssb_bus *bus)
@@ -476,6 +508,8 @@ int ssb_gpio_unregister(struct ssb_bus *bus)
 	if (ssb_chipco_available(&bus->chipco) ||
 	    ssb_extif_available(&bus->extif)) {
 		gpiochip_remove(&bus->gpio);
+		if (bus->bustype == SSB_BUSTYPE_SSB)
+			software_node_unregister(&ssb_gpio_swnode);
 		return 0;
 	}
 	return -1;

include/linux/bcma/bcma.h

@@ -486,4 +486,6 @@ extern u32 bcma_core_dma_translation(struct bcma_device *core);
 
 extern unsigned int bcma_core_irq(struct bcma_device *core, int num);
 
+extern const struct software_node bcma_gpio_swnode;
+
 #endif /* LINUX_BCMA_H_ */

include/linux/ssb/ssb.h

@@ -671,4 +671,6 @@ int ssb_pcibios_plat_dev_init(struct pci_dev *dev);
 int ssb_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 #endif /* CONFIG_SSB_EMBEDDED */
 
+extern const struct software_node ssb_gpio_swnode;
+
 #endif /* LINUX_SSB_H_ */