| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Russell King | 1959 | 96.36% | 28 | 73.68% |
| Arnd Bergmann | 32 | 1.57% | 2 | 5.26% |
| Linus Torvalds | 22 | 1.08% | 3 | 7.89% |
| David Brownell | 9 | 0.44% | 1 | 2.63% |
| Rob Herring | 9 | 0.44% | 2 | 5.26% |
| Masahiro Yamada | 1 | 0.05% | 1 | 2.63% |
| Greg Kroah-Hartman | 1 | 0.05% | 1 | 2.63% |
| Total | 2033 | 38 |
// SPDX-License-Identifier: GPL-2.0 /* * linux/arch/arm/mach-sa1100/neponset.c */ #include <linux/err.h> #include <linux/gpio/driver.h> #include <linux/gpio/gpio-reg.h> #include <linux/gpio/machine.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm.h> #include <linux/serial_core.h> #include <linux/slab.h> #include <linux/smc91x.h> #include <asm/mach-types.h> #include <asm/mach/map.h> #include <asm/hardware/sa1111.h> #include <linux/sizes.h> #include <mach/hardware.h> #include <mach/assabet.h> #include <mach/neponset.h> #include <mach/irqs.h> #define NEP_IRQ_SMC91X 0 #define NEP_IRQ_USAR 1 #define NEP_IRQ_SA1111 2 #define NEP_IRQ_NR 3 #define WHOAMI 0x00 #define LEDS 0x10 #define SWPK 0x20 #define IRR 0x24 #define KP_Y_IN 0x80 #define KP_X_OUT 0x90 #define NCR_0 0xa0 #define MDM_CTL_0 0xb0 #define MDM_CTL_1 0xb4 #define AUD_CTL 0xc0 #define IRR_ETHERNET (1 << 0) #define IRR_USAR (1 << 1) #define IRR_SA1111 (1 << 2) #define NCR_NGPIO 7 #define MDM_CTL0_NGPIO 4 #define MDM_CTL1_NGPIO 6 #define AUD_NGPIO 2 extern void sa1110_mb_disable(void); #define to_neponset_gpio_chip(x) container_of(x, struct neponset_gpio_chip, gc) static const char *neponset_ncr_names[] = { "gp01_off", "tp_power", "ms_power", "enet_osc", "spi_kb_wk_up", "a0vpp", "a1vpp" }; static const char *neponset_mdmctl0_names[] = { "rts3", "dtr3", "rts1", "dtr1", }; static const char *neponset_mdmctl1_names[] = { "cts3", "dsr3", "dcd3", "cts1", "dsr1", "dcd1" }; static const char *neponset_aud_names[] = { "sel_1341", "mute_1341", }; struct neponset_drvdata { void __iomem *base; struct platform_device *sa1111; struct platform_device *smc91x; unsigned irq_base; struct gpio_chip *gpio[4]; }; static struct gpiod_lookup_table neponset_uart1_gpio_table = { .dev_id = "sa11x0-uart.1", .table = { GPIO_LOOKUP("neponset-mdm-ctl0", 2, "rts", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl0", 3, "dtr", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl1", 3, "cts", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl1", 4, "dsr", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl1", 5, "dcd", GPIO_ACTIVE_LOW), { }, }, }; static struct gpiod_lookup_table neponset_uart3_gpio_table = { .dev_id = "sa11x0-uart.3", .table = { GPIO_LOOKUP("neponset-mdm-ctl0", 0, "rts", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl0", 1, "dtr", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl1", 0, "cts", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl1", 1, "dsr", GPIO_ACTIVE_LOW), GPIO_LOOKUP("neponset-mdm-ctl1", 2, "dcd", GPIO_ACTIVE_LOW), { }, }, }; static struct gpiod_lookup_table neponset_pcmcia_table = { .dev_id = "1800", .table = { GPIO_LOOKUP("sa1111", 1, "a0vcc", GPIO_ACTIVE_HIGH), GPIO_LOOKUP("sa1111", 0, "a1vcc", GPIO_ACTIVE_HIGH), GPIO_LOOKUP("neponset-ncr", 5, "a0vpp", GPIO_ACTIVE_HIGH), GPIO_LOOKUP("neponset-ncr", 6, "a1vpp", GPIO_ACTIVE_HIGH), GPIO_LOOKUP("sa1111", 2, "b0vcc", GPIO_ACTIVE_HIGH), GPIO_LOOKUP("sa1111", 3, "b1vcc", GPIO_ACTIVE_HIGH), { }, }, }; static struct neponset_drvdata *nep; void neponset_ncr_frob(unsigned int mask, unsigned int val) { struct neponset_drvdata *n = nep; unsigned long m = mask, v = val; if (nep) n->gpio[0]->set_multiple(n->gpio[0], &m, &v); else WARN(1, "nep unset\n"); } EXPORT_SYMBOL(neponset_ncr_frob); /* * Install handler for Neponset IRQ. Note that we have to loop here * since the ETHERNET and USAR IRQs are level based, and we need to * ensure that the IRQ signal is deasserted before returning. This * is rather unfortunate. */ static void neponset_irq_handler(struct irq_desc *desc) { struct neponset_drvdata *d = irq_desc_get_handler_data(desc); unsigned int irr; while (1) { /* * Acknowledge the parent IRQ. */ desc->irq_data.chip->irq_ack(&desc->irq_data); /* * Read the interrupt reason register. Let's have all * active IRQ bits high. Note: there is a typo in the * Neponset user's guide for the SA1111 IRR level. */ irr = readb_relaxed(d->base + IRR); irr ^= IRR_ETHERNET | IRR_USAR; if ((irr & (IRR_ETHERNET | IRR_USAR | IRR_SA1111)) == 0) break; /* * Since there is no individual mask, we have to * mask the parent IRQ. This is safe, since we'll * recheck the register for any pending IRQs. */ if (irr & (IRR_ETHERNET | IRR_USAR)) { desc->irq_data.chip->irq_mask(&desc->irq_data); /* * Ack the interrupt now to prevent re-entering * this neponset handler. Again, this is safe * since we'll check the IRR register prior to * leaving. */ desc->irq_data.chip->irq_ack(&desc->irq_data); if (irr & IRR_ETHERNET) generic_handle_irq(d->irq_base + NEP_IRQ_SMC91X); if (irr & IRR_USAR) generic_handle_irq(d->irq_base + NEP_IRQ_USAR); desc->irq_data.chip->irq_unmask(&desc->irq_data); } if (irr & IRR_SA1111) generic_handle_irq(d->irq_base + NEP_IRQ_SA1111); } } /* Yes, we really do not have any kind of masking or unmasking */ static void nochip_noop(struct irq_data *irq) { } static struct irq_chip nochip = { .name = "neponset", .irq_ack = nochip_noop, .irq_mask = nochip_noop, .irq_unmask = nochip_noop, }; static int neponset_init_gpio(struct gpio_chip **gcp, struct device *dev, const char *label, void __iomem *reg, unsigned num, bool in, const char *const * names) { struct gpio_chip *gc; gc = gpio_reg_init(dev, reg, -1, num, label, in ? 0xffffffff : 0, readl_relaxed(reg), names, NULL, NULL); if (IS_ERR(gc)) return PTR_ERR(gc); *gcp = gc; return 0; } static struct sa1111_platform_data sa1111_info = { .disable_devs = SA1111_DEVID_PS2_MSE, }; static int neponset_probe(struct platform_device *dev) { struct neponset_drvdata *d; struct resource *nep_res, *sa1111_res, *smc91x_res; struct resource sa1111_resources[] = { DEFINE_RES_MEM(0x40000000, SZ_8K), { .flags = IORESOURCE_IRQ }, }; struct platform_device_info sa1111_devinfo = { .parent = &dev->dev, .name = "sa1111", .id = 0, .res = sa1111_resources, .num_res = ARRAY_SIZE(sa1111_resources), .data = &sa1111_info, .size_data = sizeof(sa1111_info), .dma_mask = 0xffffffffUL, }; struct resource smc91x_resources[] = { DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS, 0x02000000, "smc91x-regs"), DEFINE_RES_MEM_NAMED(SA1100_CS3_PHYS + 0x02000000, 0x02000000, "smc91x-attrib"), { .flags = IORESOURCE_IRQ }, }; struct smc91x_platdata smc91x_platdata = { .flags = SMC91X_USE_8BIT | SMC91X_IO_SHIFT_2 | SMC91X_NOWAIT, }; struct platform_device_info smc91x_devinfo = { .parent = &dev->dev, .name = "smc91x", .id = 0, .res = smc91x_resources, .num_res = ARRAY_SIZE(smc91x_resources), .data = &smc91x_platdata, .size_data = sizeof(smc91x_platdata), }; int ret, irq; if (nep) return -EBUSY; irq = ret = platform_get_irq(dev, 0); if (ret < 0) goto err_alloc; nep_res = platform_get_resource(dev, IORESOURCE_MEM, 0); smc91x_res = platform_get_resource(dev, IORESOURCE_MEM, 1); sa1111_res = platform_get_resource(dev, IORESOURCE_MEM, 2); if (!nep_res || !smc91x_res || !sa1111_res) { ret = -ENXIO; goto err_alloc; } d = kzalloc(sizeof(*d), GFP_KERNEL); if (!d) { ret = -ENOMEM; goto err_alloc; } d->base = ioremap(nep_res->start, SZ_4K); if (!d->base) { ret = -ENOMEM; goto err_ioremap; } if (readb_relaxed(d->base + WHOAMI) != 0x11) { dev_warn(&dev->dev, "Neponset board detected, but wrong ID: %02x\n", readb_relaxed(d->base + WHOAMI)); ret = -ENODEV; goto err_id; } ret = irq_alloc_descs(-1, IRQ_BOARD_START, NEP_IRQ_NR, -1); if (ret <= 0) { dev_err(&dev->dev, "unable to allocate %u irqs: %d\n", NEP_IRQ_NR, ret); if (ret == 0) ret = -ENOMEM; goto err_irq_alloc; } d->irq_base = ret; irq_set_chip_and_handler(d->irq_base + NEP_IRQ_SMC91X, &nochip, handle_simple_irq); irq_clear_status_flags(d->irq_base + NEP_IRQ_SMC91X, IRQ_NOREQUEST | IRQ_NOPROBE); irq_set_chip_and_handler(d->irq_base + NEP_IRQ_USAR, &nochip, handle_simple_irq); irq_clear_status_flags(d->irq_base + NEP_IRQ_USAR, IRQ_NOREQUEST | IRQ_NOPROBE); irq_set_chip(d->irq_base + NEP_IRQ_SA1111, &nochip); irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING); irq_set_chained_handler_and_data(irq, neponset_irq_handler, d); /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ writeb_relaxed(NCR_GP01_OFF, d->base + NCR_0); neponset_init_gpio(&d->gpio[0], &dev->dev, "neponset-ncr", d->base + NCR_0, NCR_NGPIO, false, neponset_ncr_names); neponset_init_gpio(&d->gpio[1], &dev->dev, "neponset-mdm-ctl0", d->base + MDM_CTL_0, MDM_CTL0_NGPIO, false, neponset_mdmctl0_names); neponset_init_gpio(&d->gpio[2], &dev->dev, "neponset-mdm-ctl1", d->base + MDM_CTL_1, MDM_CTL1_NGPIO, true, neponset_mdmctl1_names); neponset_init_gpio(&d->gpio[3], &dev->dev, "neponset-aud-ctl", d->base + AUD_CTL, AUD_NGPIO, false, neponset_aud_names); gpiod_add_lookup_table(&neponset_uart1_gpio_table); gpiod_add_lookup_table(&neponset_uart3_gpio_table); gpiod_add_lookup_table(&neponset_pcmcia_table); /* * We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately * something on the Neponset activates this IRQ on sleep (eth?) */ #if 0 enable_irq_wake(irq); #endif dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", d->irq_base, d->irq_base + NEP_IRQ_NR - 1); nep = d; /* Ensure that the memory bus request/grant signals are setup */ sa1110_mb_disable(); sa1111_resources[0].parent = sa1111_res; sa1111_resources[1].start = d->irq_base + NEP_IRQ_SA1111; sa1111_resources[1].end = d->irq_base + NEP_IRQ_SA1111; d->sa1111 = platform_device_register_full(&sa1111_devinfo); smc91x_resources[0].parent = smc91x_res; smc91x_resources[1].parent = smc91x_res; smc91x_resources[2].start = d->irq_base + NEP_IRQ_SMC91X; smc91x_resources[2].end = d->irq_base + NEP_IRQ_SMC91X; d->smc91x = platform_device_register_full(&smc91x_devinfo); platform_set_drvdata(dev, d); return 0; err_irq_alloc: err_id: iounmap(d->base); err_ioremap: kfree(d); err_alloc: return ret; } static int neponset_remove(struct platform_device *dev) { struct neponset_drvdata *d = platform_get_drvdata(dev); int irq = platform_get_irq(dev, 0); if (!IS_ERR(d->sa1111)) platform_device_unregister(d->sa1111); if (!IS_ERR(d->smc91x)) platform_device_unregister(d->smc91x); gpiod_remove_lookup_table(&neponset_pcmcia_table); gpiod_remove_lookup_table(&neponset_uart3_gpio_table); gpiod_remove_lookup_table(&neponset_uart1_gpio_table); irq_set_chained_handler(irq, NULL); irq_free_descs(d->irq_base, NEP_IRQ_NR); nep = NULL; iounmap(d->base); kfree(d); return 0; } #ifdef CONFIG_PM_SLEEP static int neponset_resume(struct device *dev) { struct neponset_drvdata *d = dev_get_drvdata(dev); int i, ret = 0; for (i = 0; i < ARRAY_SIZE(d->gpio); i++) { ret = gpio_reg_resume(d->gpio[i]); if (ret) break; } return ret; } static const struct dev_pm_ops neponset_pm_ops = { .resume_noirq = neponset_resume, .restore_noirq = neponset_resume, }; #define PM_OPS &neponset_pm_ops #else #define PM_OPS NULL #endif static struct platform_driver neponset_device_driver = { .probe = neponset_probe, .remove = neponset_remove, .driver = { .name = "neponset", .pm = PM_OPS, }, }; static int __init neponset_init(void) { return platform_driver_register(&neponset_device_driver); } subsys_initcall(neponset_init);
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