diff options
Diffstat (limited to 'arch/arm/mach-sa1100/neponset.c')
| -rw-r--r-- | arch/arm/mach-sa1100/neponset.c | 159 |
1 files changed, 96 insertions, 63 deletions
diff --git a/arch/arm/mach-sa1100/neponset.c b/arch/arm/mach-sa1100/neponset.c index a61a2432766b..b1823f445358 100644 --- a/arch/arm/mach-sa1100/neponset.c +++ b/arch/arm/mach-sa1100/neponset.c @@ -3,6 +3,8 @@ * linux/arch/arm/mach-sa1100/neponset.c */ #include <linux/err.h> +#include <linux/gpio/driver.h> +#include <linux/gpio/gpio-reg.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/irq.h> @@ -45,10 +47,13 @@ #define IRR_USAR (1 << 1) #define IRR_SA1111 (1 << 2) +#define NCR_NGPIO 7 + #define MDM_CTL0_RTS1 (1 << 0) #define MDM_CTL0_DTR1 (1 << 1) #define MDM_CTL0_RTS2 (1 << 2) #define MDM_CTL0_DTR2 (1 << 3) +#define MDM_CTL0_NGPIO 4 #define MDM_CTL1_CTS1 (1 << 0) #define MDM_CTL1_DSR1 (1 << 1) @@ -56,80 +61,87 @@ #define MDM_CTL1_CTS2 (1 << 3) #define MDM_CTL1_DSR2 (1 << 4) #define MDM_CTL1_DCD2 (1 << 5) +#define MDM_CTL1_NGPIO 6 #define AUD_SEL_1341 (1 << 0) #define AUD_MUTE_1341 (1 << 1) +#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; -#ifdef CONFIG_PM_SLEEP - u32 ncr0; - u32 mdm_ctl_0; -#endif + struct gpio_chip *gpio[4]; }; -static void __iomem *nep_base; +static struct neponset_drvdata *nep; void neponset_ncr_frob(unsigned int mask, unsigned int val) { - void __iomem *base = nep_base; - - if (base) { - unsigned long flags; - unsigned v; - - local_irq_save(flags); - v = readb_relaxed(base + NCR_0); - writeb_relaxed((v & ~mask) | val, base + NCR_0); - local_irq_restore(flags); - } else { - WARN(1, "nep_base unset\n"); - } + 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); static void neponset_set_mctrl(struct uart_port *port, u_int mctrl) { - void __iomem *base = nep_base; - u_int mdm_ctl0; + struct neponset_drvdata *n = nep; + unsigned long mask, val = 0; - if (!base) + if (!n) return; - mdm_ctl0 = readb_relaxed(base + MDM_CTL_0); if (port->mapbase == _Ser1UTCR0) { - if (mctrl & TIOCM_RTS) - mdm_ctl0 &= ~MDM_CTL0_RTS2; - else - mdm_ctl0 |= MDM_CTL0_RTS2; - - if (mctrl & TIOCM_DTR) - mdm_ctl0 &= ~MDM_CTL0_DTR2; - else - mdm_ctl0 |= MDM_CTL0_DTR2; + mask = MDM_CTL0_RTS2 | MDM_CTL0_DTR2; + + if (!(mctrl & TIOCM_RTS)) + val |= MDM_CTL0_RTS2; + + if (!(mctrl & TIOCM_DTR)) + val |= MDM_CTL0_DTR2; } else if (port->mapbase == _Ser3UTCR0) { - if (mctrl & TIOCM_RTS) - mdm_ctl0 &= ~MDM_CTL0_RTS1; - else - mdm_ctl0 |= MDM_CTL0_RTS1; - - if (mctrl & TIOCM_DTR) - mdm_ctl0 &= ~MDM_CTL0_DTR1; - else - mdm_ctl0 |= MDM_CTL0_DTR1; + mask = MDM_CTL0_RTS1 | MDM_CTL0_DTR1; + + if (!(mctrl & TIOCM_RTS)) + val |= MDM_CTL0_RTS1; + + if (!(mctrl & TIOCM_DTR)) + val |= MDM_CTL0_DTR1; } - writeb_relaxed(mdm_ctl0, base + MDM_CTL_0); + n->gpio[1]->set_multiple(n->gpio[1], &mask, &val); } static u_int neponset_get_mctrl(struct uart_port *port) { - void __iomem *base = nep_base; + void __iomem *base = nep->base; u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; u_int mdm_ctl1; @@ -231,6 +243,22 @@ static struct irq_chip nochip = { .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, }; @@ -274,7 +302,7 @@ static int neponset_probe(struct platform_device *dev) }; int ret, irq; - if (nep_base) + if (nep) return -EBUSY; irq = ret = platform_get_irq(dev, 0); @@ -330,6 +358,22 @@ static int neponset_probe(struct platform_device *dev) 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); + /* * We would set IRQ_GPIO25 to be a wake-up IRQ, but unfortunately * something on the Neponset activates this IRQ on sleep (eth?) @@ -340,16 +384,13 @@ static int neponset_probe(struct platform_device *dev) dev_info(&dev->dev, "Neponset daughter board, providing IRQ%u-%u\n", d->irq_base, d->irq_base + NEP_IRQ_NR - 1); - nep_base = d->base; + nep = d; sa1100_register_uart_fns(&neponset_port_fns); /* Ensure that the memory bus request/grant signals are setup */ sa1110_mb_disable(); - /* Disable GPIO 0/1 drivers so the buttons work on the Assabet */ - writeb_relaxed(NCR_GP01_OFF, d->base + NCR_0); - 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; @@ -385,7 +426,7 @@ static int neponset_remove(struct platform_device *dev) platform_device_unregister(d->smc91x); irq_set_chained_handler(irq, NULL); irq_free_descs(d->irq_base, NEP_IRQ_NR); - nep_base = NULL; + nep = NULL; iounmap(d->base); kfree(d); @@ -393,30 +434,22 @@ static int neponset_remove(struct platform_device *dev) } #ifdef CONFIG_PM_SLEEP -static int neponset_suspend(struct device *dev) -{ - struct neponset_drvdata *d = dev_get_drvdata(dev); - - d->ncr0 = readb_relaxed(d->base + NCR_0); - d->mdm_ctl_0 = readb_relaxed(d->base + MDM_CTL_0); - - return 0; -} - static int neponset_resume(struct device *dev) { struct neponset_drvdata *d = dev_get_drvdata(dev); + int i, ret = 0; - writeb_relaxed(d->ncr0, d->base + NCR_0); - writeb_relaxed(d->mdm_ctl_0, d->base + MDM_CTL_0); + for (i = 0; i < ARRAY_SIZE(d->gpio); i++) { + ret = gpio_reg_resume(d->gpio[i]); + if (ret) + break; + } - return 0; + return ret; } static const struct dev_pm_ops neponset_pm_ops = { - .suspend_noirq = neponset_suspend, .resume_noirq = neponset_resume, - .freeze_noirq = neponset_suspend, .restore_noirq = neponset_resume, }; #define PM_OPS &neponset_pm_ops |