diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpio-pxa.c | 77 | ||||
| -rw-r--r-- | drivers/mtd/nand/pxa3xx_nand.c | 87 | ||||
| -rw-r--r-- | drivers/rtc/rtc-pxa.c | 11 |
3 files changed, 106 insertions, 69 deletions
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index 9cac88a..9528779 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -26,6 +26,8 @@ #include <linux/syscore_ops.h> #include <linux/slab.h> +#include <asm/mach/irq.h> + #include <mach/irqs.h> /* @@ -59,6 +61,7 @@ #define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2)) int pxa_last_gpio; +static int irq_base; #ifdef CONFIG_OF static struct irq_domain *domain; @@ -167,63 +170,14 @@ static inline int __gpio_is_occupied(unsigned gpio) return ret; } -#ifdef CONFIG_ARCH_PXA -static inline int __pxa_gpio_to_irq(int gpio) -{ - if (gpio_is_pxa_type(gpio_type)) - return PXA_GPIO_TO_IRQ(gpio); - return -1; -} - -static inline int __pxa_irq_to_gpio(int irq) -{ - if (gpio_is_pxa_type(gpio_type)) - return irq - PXA_GPIO_TO_IRQ(0); - return -1; -} -#else -static inline int __pxa_gpio_to_irq(int gpio) { return -1; } -static inline int __pxa_irq_to_gpio(int irq) { return -1; } -#endif - -#ifdef CONFIG_ARCH_MMP -static inline int __mmp_gpio_to_irq(int gpio) -{ - if (gpio_is_mmp_type(gpio_type)) - return MMP_GPIO_TO_IRQ(gpio); - return -1; -} - -static inline int __mmp_irq_to_gpio(int irq) -{ - if (gpio_is_mmp_type(gpio_type)) - return irq - MMP_GPIO_TO_IRQ(0); - return -1; -} -#else -static inline int __mmp_gpio_to_irq(int gpio) { return -1; } -static inline int __mmp_irq_to_gpio(int irq) { return -1; } -#endif - static int pxa_gpio_to_irq(struct gpio_chip *chip, unsigned offset) { - int gpio, ret; - - gpio = chip->base + offset; - ret = __pxa_gpio_to_irq(gpio); - if (ret >= 0) - return ret; - return __mmp_gpio_to_irq(gpio); + return chip->base + offset + irq_base; } int pxa_irq_to_gpio(int irq) { - int ret; - - ret = __pxa_irq_to_gpio(irq); - if (ret >= 0) - return ret; - return __mmp_irq_to_gpio(irq); + return irq - irq_base; } static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset) @@ -403,6 +357,9 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc) struct pxa_gpio_chip *c; int loop, gpio, gpio_base, n; unsigned long gedr; + struct irq_chip *chip = irq_desc_get_chip(desc); + + chained_irq_enter(chip, desc); do { loop = 0; @@ -422,6 +379,8 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc) } } } while (loop); + + chained_irq_exit(chip, desc); } static void pxa_ack_muxed_gpio(struct irq_data *d) @@ -535,7 +494,7 @@ const struct irq_domain_ops pxa_irq_domain_ops = { static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev) { - int ret, nr_banks, nr_gpios, irq_base; + int ret, nr_banks, nr_gpios; struct device_node *prev, *next, *np = pdev->dev.of_node; const struct of_device_id *of_id = of_match_device(pxa_gpio_dt_ids, &pdev->dev); @@ -590,10 +549,20 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev) int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0; ret = pxa_gpio_probe_dt(pdev); - if (ret < 0) + if (ret < 0) { pxa_last_gpio = pxa_gpio_nums(); - else +#ifdef CONFIG_ARCH_PXA + if (gpio_is_pxa_type(gpio_type)) + irq_base = PXA_GPIO_TO_IRQ(0); +#endif +#ifdef CONFIG_ARCH_MMP + if (gpio_is_mmp_type(gpio_type)) + irq_base = MMP_GPIO_TO_IRQ(0); +#endif + } else { use_of = 1; + } + if (!pxa_last_gpio) return -EINVAL; diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 252aaef..d944d6e 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -22,6 +22,8 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <mach/dma.h> #include <plat/pxa3xx_nand.h> @@ -1032,7 +1034,7 @@ static int alloc_nand_resource(struct platform_device *pdev) struct pxa3xx_nand_platform_data *pdata; struct pxa3xx_nand_info *info; struct pxa3xx_nand_host *host; - struct nand_chip *chip; + struct nand_chip *chip = NULL; struct mtd_info *mtd; struct resource *r; int ret, irq, cs; @@ -1081,21 +1083,31 @@ static int alloc_nand_resource(struct platform_device *pdev) } clk_enable(info->clk); - r = platform_get_resource(pdev, IORESOURCE_DMA, 0); - if (r == NULL) { - dev_err(&pdev->dev, "no resource defined for data DMA\n"); - ret = -ENXIO; - goto fail_put_clk; - } - info->drcmr_dat = r->start; + /* + * This is a dirty hack to make this driver work from devicetree + * bindings. It can be removed once we have a prober DMA controller + * framework for DT. + */ + if (pdev->dev.of_node && cpu_is_pxa3xx()) { + info->drcmr_dat = 97; + info->drcmr_cmd = 99; + } else { + r = platform_get_resource(pdev, IORESOURCE_DMA, 0); + if (r == NULL) { + dev_err(&pdev->dev, "no resource defined for data DMA\n"); + ret = -ENXIO; + goto fail_put_clk; + } + info->drcmr_dat = r->start; - r = platform_get_resource(pdev, IORESOURCE_DMA, 1); - if (r == NULL) { - dev_err(&pdev->dev, "no resource defined for command DMA\n"); - ret = -ENXIO; - goto fail_put_clk; + r = platform_get_resource(pdev, IORESOURCE_DMA, 1); + if (r == NULL) { + dev_err(&pdev->dev, "no resource defined for command DMA\n"); + ret = -ENXIO; + goto fail_put_clk; + } + info->drcmr_cmd = r->start; } - info->drcmr_cmd = r->start; irq = platform_get_irq(pdev, 0); if (irq < 0) { @@ -1200,12 +1212,55 @@ static int pxa3xx_nand_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static struct of_device_id pxa3xx_nand_dt_ids[] = { + { .compatible = "marvell,pxa3xx-nand" }, + {} +}; +MODULE_DEVICE_TABLE(of, i2c_pxa_dt_ids); + +static int pxa3xx_nand_probe_dt(struct platform_device *pdev) +{ + struct pxa3xx_nand_platform_data *pdata; + struct device_node *np = pdev->dev.of_node; + const struct of_device_id *of_id = + of_match_device(pxa3xx_nand_dt_ids, &pdev->dev); + + if (!of_id) + return 0; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + if (of_get_property(np, "marvell,nand-enable-arbiter", NULL)) + pdata->enable_arbiter = 1; + if (of_get_property(np, "marvell,nand-keep-config", NULL)) + pdata->keep_config = 1; + of_property_read_u32(np, "num-cs", &pdata->num_cs); + + pdev->dev.platform_data = pdata; + + return 0; +} +#else +static inline int pxa3xx_nand_probe_dt(struct platform_device *pdev) +{ + return 0; +} +#endif + static int pxa3xx_nand_probe(struct platform_device *pdev) { struct pxa3xx_nand_platform_data *pdata; + struct mtd_part_parser_data ppdata = {}; struct pxa3xx_nand_info *info; int ret, cs, probe_success; + ret = pxa3xx_nand_probe_dt(pdev); + if (ret) + return ret; + pdata = pdev->dev.platform_data; if (!pdata) { dev_err(&pdev->dev, "no platform data defined\n"); @@ -1229,8 +1284,9 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) continue; } + ppdata.of_node = pdev->dev.of_node; ret = mtd_device_parse_register(info->host[cs]->mtd, NULL, - NULL, pdata->parts[cs], + &ppdata, pdata->parts[cs], pdata->nr_parts[cs]); if (!ret) probe_success = 1; @@ -1306,6 +1362,7 @@ static int pxa3xx_nand_resume(struct platform_device *pdev) static struct platform_driver pxa3xx_nand_driver = { .driver = { .name = "pxa3xx-nand", + .of_match_table = of_match_ptr(pxa3xx_nand_dt_ids), }, .probe = pxa3xx_nand_probe, .remove = pxa3xx_nand_remove, diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c index 0075c8f..f771b2e 100644 --- a/drivers/rtc/rtc-pxa.c +++ b/drivers/rtc/rtc-pxa.c @@ -27,6 +27,8 @@ #include <linux/interrupt.h> #include <linux/io.h> #include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <mach/hardware.h> @@ -396,6 +398,14 @@ static int __exit pxa_rtc_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static struct of_device_id pxa_rtc_dt_ids[] = { + { .compatible = "marvell,pxa-rtc" }, + {} +}; +MODULE_DEVICE_TABLE(of, pxa_rtc_dt_ids); +#endif + #ifdef CONFIG_PM static int pxa_rtc_suspend(struct device *dev) { @@ -425,6 +435,7 @@ static struct platform_driver pxa_rtc_driver = { .remove = __exit_p(pxa_rtc_remove), .driver = { .name = "pxa-rtc", + .of_match_table = of_match_ptr(pxa_rtc_dt_ids), #ifdef CONFIG_PM .pm = &pxa_rtc_pm_ops, #endif |
