Lines Matching full:gpmc
3 * GPMC support functions
31 #include <linux/omap-gpmc.h>
37 #define DEVICE_NAME "omap-gpmc"
39 /* GPMC register offsets */
66 /* GPMC ECC control settings */
95 * The first 1MB of GPMC address space is typically mapped to
98 * As GPMC minimum partition size is 16MB we can only start from
204 /* Structure to save gpmc cs context */
217 * Structure to save/restore gpmc context
415 * @name: DTS node name, w/o "gpmc,"
419 * raw format: gpmc,name = <value>
420 * tick format: gpmc,name = <value> /‍* x ns -- y ns; x ticks *‍/
460 pr_info("gpmc,%s = <%u>; /* %u ns - %u ns; %i ticks%s*/\n", in get_gpmc_timing_reg()
465 pr_info("gpmc,%s = <%u>;%s\n", name, l, in get_gpmc_timing_reg()
492 pr_info("gpmc cs%i %s:\n", cs, desc); in gpmc_show_regs()
502 * Note that gpmc,wait-pin handing wrongly assumes bit 8 is available,
509 pr_info("gpmc cs%i access configuration:\n", cs); in gpmc_cs_show_timings()
522 GPMC_GET_RAW_BOOL(GPMC_CS_CONFIG1, 29, 29, "gpmc,sync-read"); in gpmc_cs_show_timings()
536 pr_info("gpmc cs%i timings configuration:\n", cs); in gpmc_cs_show_timings()
619 pr_err("%s: GPMC CS%d: %s %d ns, %d ticks > %d ticks\n", in set_gpmc_timing_reg()
627 pr_info("GPMC CS%d: %-17s: %3d ticks, %3lu ns (was %3i ticks) %3d ns\n", in set_gpmc_timing_reg()
689 * @t: GPMC timing parameters.
690 * @s: GPMC timing settings.
706 * Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for in gpmc_cs_set_timings()
835 pr_info("GPMC CS%d CLK period is %lu ns (div %d)\n", in gpmc_cs_set_timings()
911 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_reserved() local
913 gpmc->flags |= GPMC_CS_RESERVED; in gpmc_cs_set_reserved()
918 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_reserved() local
920 return gpmc->flags & GPMC_CS_RESERVED; in gpmc_cs_reserved()
939 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_insert_mem() local
940 struct resource *res = &gpmc->mem; in gpmc_cs_insert_mem()
955 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_delete_mem() local
956 struct resource *res = &gpmc->mem; in gpmc_cs_delete_mem()
970 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_request() local
971 struct resource *res = &gpmc->mem; in gpmc_cs_request()
1016 struct gpmc_cs_data *gpmc; in gpmc_cs_free() local
1021 WARN(1, "Trying to free non-reserved GPMC CS%d\n", cs); in gpmc_cs_free()
1025 gpmc = &gpmc_cs[cs]; in gpmc_cs_free()
1026 res = &gpmc->mem; in gpmc_cs_free()
1037 * gpmc_configure - write request to configure gpmc
1078 * gpmc_omap_get_nand_ops - Get the GPMC NAND interface
1079 * @reg: the GPMC NAND register map exclusive for NAND use.
1080 * @cs: GPMC chip select number on which the NAND sits. The
1237 pr_warn("%s called before GPMC IRQ domain available\n", in gpmc_get_client_irq()
1339 struct gpmc_device *gpmc = d->host_data; in gpmc_irq_map() local
1341 irq_set_chip_data(virq, gpmc); in gpmc_irq_map()
1344 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1347 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1363 struct gpmc_device *gpmc = data; in gpmc_handle_irq() local
1371 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) { in gpmc_handle_irq()
1379 dev_warn(gpmc->dev, in gpmc_handle_irq()
1393 static int gpmc_setup_irq(struct gpmc_device *gpmc) in gpmc_setup_irq() argument
1405 gpmc->irq_chip.name = "gpmc"; in gpmc_setup_irq()
1406 gpmc->irq_chip.irq_enable = gpmc_irq_enable; in gpmc_setup_irq()
1407 gpmc->irq_chip.irq_disable = gpmc_irq_disable; in gpmc_setup_irq()
1408 gpmc->irq_chip.irq_ack = gpmc_irq_ack; in gpmc_setup_irq()
1409 gpmc->irq_chip.irq_mask = gpmc_irq_mask; in gpmc_setup_irq()
1410 gpmc->irq_chip.irq_unmask = gpmc_irq_unmask; in gpmc_setup_irq()
1411 gpmc->irq_chip.irq_set_type = gpmc_irq_set_type; in gpmc_setup_irq()
1413 gpmc_irq_domain = irq_domain_add_linear(gpmc->dev->of_node, in gpmc_setup_irq()
1414 gpmc->nirqs, in gpmc_setup_irq()
1416 gpmc); in gpmc_setup_irq()
1418 dev_err(gpmc->dev, "IRQ domain add failed\n"); in gpmc_setup_irq()
1422 rc = request_irq(gpmc->irq, gpmc_handle_irq, 0, "gpmc", gpmc); in gpmc_setup_irq()
1424 dev_err(gpmc->dev, "failed to request irq %d: %d\n", in gpmc_setup_irq()
1425 gpmc->irq, rc); in gpmc_setup_irq()
1433 static int gpmc_free_irq(struct gpmc_device *gpmc) in gpmc_free_irq() argument
1437 free_irq(gpmc->irq, gpmc); in gpmc_free_irq()
1439 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) in gpmc_free_irq()
1803 * @cs: GPMC chip-select to program
1804 * @p: pointer to GPMC settings structure
1806 * Programs non-timing related settings for a GPMC chip-select, such as
1886 { .compatible = "ti,omap2420-gpmc" },
1887 { .compatible = "ti,omap2430-gpmc" },
1888 { .compatible = "ti,omap3430-gpmc" }, /* omap3430 & omap3630 */
1889 { .compatible = "ti,omap4430-gpmc" }, /* omap4430 & omap4460 & omap543x */
1890 { .compatible = "ti,am3352-gpmc" }, /* am335x devices */
1896 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_name() local
1898 gpmc->name = name; in gpmc_cs_set_name()
1903 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_get_name() local
1905 return gpmc->name; in gpmc_cs_get_name()
1928 * Make sure we ignore any device offsets from the GPMC partition in gpmc_cs_remap()
1930 * to the GPMC 16MB minimum granularity. in gpmc_cs_remap()
1952 * gpmc_read_settings_dt - read gpmc settings from device-tree
1953 * @np: pointer to device-tree node for a gpmc child device
1954 * @p: pointer to gpmc settings structure
1956 * Reads the GPMC settings for a GPMC child device from device-tree and
1957 * stores them in the GPMC settings structure passed. The GPMC settings
1965 p->sync_read = of_property_read_bool(np, "gpmc,sync-read"); in gpmc_read_settings_dt()
1966 p->sync_write = of_property_read_bool(np, "gpmc,sync-write"); in gpmc_read_settings_dt()
1967 of_property_read_u32(np, "gpmc,device-width", &p->device_width); in gpmc_read_settings_dt()
1968 of_property_read_u32(np, "gpmc,mux-add-data", &p->mux_add_data); in gpmc_read_settings_dt()
1970 if (!of_property_read_u32(np, "gpmc,burst-length", &p->burst_len)) { in gpmc_read_settings_dt()
1971 p->burst_wrap = of_property_read_bool(np, "gpmc,burst-wrap"); in gpmc_read_settings_dt()
1972 p->burst_read = of_property_read_bool(np, "gpmc,burst-read"); in gpmc_read_settings_dt()
1973 p->burst_write = of_property_read_bool(np, "gpmc,burst-write"); in gpmc_read_settings_dt()
1979 if (!of_property_read_u32(np, "gpmc,wait-pin", &p->wait_pin)) { in gpmc_read_settings_dt()
1981 "gpmc,wait-on-read"); in gpmc_read_settings_dt()
1983 "gpmc,wait-on-write"); in gpmc_read_settings_dt()
2001 of_property_read_u32(np, "gpmc,sync-clk-ps", &gpmc_t->sync_clk); in gpmc_read_timings_dt()
2004 of_property_read_u32(np, "gpmc,cs-on-ns", &gpmc_t->cs_on); in gpmc_read_timings_dt()
2005 of_property_read_u32(np, "gpmc,cs-rd-off-ns", &gpmc_t->cs_rd_off); in gpmc_read_timings_dt()
2006 of_property_read_u32(np, "gpmc,cs-wr-off-ns", &gpmc_t->cs_wr_off); in gpmc_read_timings_dt()
2009 of_property_read_u32(np, "gpmc,adv-on-ns", &gpmc_t->adv_on); in gpmc_read_timings_dt()
2010 of_property_read_u32(np, "gpmc,adv-rd-off-ns", &gpmc_t->adv_rd_off); in gpmc_read_timings_dt()
2011 of_property_read_u32(np, "gpmc,adv-wr-off-ns", &gpmc_t->adv_wr_off); in gpmc_read_timings_dt()
2012 of_property_read_u32(np, "gpmc,adv-aad-mux-on-ns", in gpmc_read_timings_dt()
2014 of_property_read_u32(np, "gpmc,adv-aad-mux-rd-off-ns", in gpmc_read_timings_dt()
2016 of_property_read_u32(np, "gpmc,adv-aad-mux-wr-off-ns", in gpmc_read_timings_dt()
2020 of_property_read_u32(np, "gpmc,we-on-ns", &gpmc_t->we_on); in gpmc_read_timings_dt()
2021 of_property_read_u32(np, "gpmc,we-off-ns", &gpmc_t->we_off); in gpmc_read_timings_dt()
2024 of_property_read_u32(np, "gpmc,oe-on-ns", &gpmc_t->oe_on); in gpmc_read_timings_dt()
2025 of_property_read_u32(np, "gpmc,oe-off-ns", &gpmc_t->oe_off); in gpmc_read_timings_dt()
2026 of_property_read_u32(np, "gpmc,oe-aad-mux-on-ns", in gpmc_read_timings_dt()
2028 of_property_read_u32(np, "gpmc,oe-aad-mux-off-ns", in gpmc_read_timings_dt()
2032 of_property_read_u32(np, "gpmc,page-burst-access-ns", in gpmc_read_timings_dt()
2034 of_property_read_u32(np, "gpmc,access-ns", &gpmc_t->access); in gpmc_read_timings_dt()
2035 of_property_read_u32(np, "gpmc,rd-cycle-ns", &gpmc_t->rd_cycle); in gpmc_read_timings_dt()
2036 of_property_read_u32(np, "gpmc,wr-cycle-ns", &gpmc_t->wr_cycle); in gpmc_read_timings_dt()
2037 of_property_read_u32(np, "gpmc,bus-turnaround-ns", in gpmc_read_timings_dt()
2039 of_property_read_u32(np, "gpmc,cycle2cycle-delay-ns", in gpmc_read_timings_dt()
2041 of_property_read_u32(np, "gpmc,wait-monitoring-ns", in gpmc_read_timings_dt()
2043 of_property_read_u32(np, "gpmc,clk-activation-ns", in gpmc_read_timings_dt()
2047 of_property_read_u32(np, "gpmc,wr-access-ns", &gpmc_t->wr_access); in gpmc_read_timings_dt()
2048 of_property_read_u32(np, "gpmc,wr-data-mux-bus-ns", in gpmc_read_timings_dt()
2055 of_property_read_bool(np, "gpmc,cycle2cycle-diffcsen"); in gpmc_read_timings_dt()
2057 of_property_read_bool(np, "gpmc,cycle2cycle-samecsen"); in gpmc_read_timings_dt()
2058 p->we_extra_delay = of_property_read_bool(np, "gpmc,we-extra-delay"); in gpmc_read_timings_dt()
2059 p->oe_extra_delay = of_property_read_bool(np, "gpmc,oe-extra-delay"); in gpmc_read_timings_dt()
2060 p->adv_extra_delay = of_property_read_bool(np, "gpmc,adv-extra-delay"); in gpmc_read_timings_dt()
2061 p->cs_extra_delay = of_property_read_bool(np, "gpmc,cs-extra-delay"); in gpmc_read_timings_dt()
2063 of_property_read_bool(np, "gpmc,time-para-granularity"); in gpmc_read_timings_dt()
2067 * gpmc_probe_generic_child - configures the gpmc for a child device
2068 * @pdev: pointer to gpmc platform device
2071 * Allocates and configures a GPMC chip-select for a child device.
2085 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_probe_generic_child() local
2110 dev_err(&pdev->dev, "cannot request GPMC CS %d\n", cs); in gpmc_probe_generic_child()
2119 * For some GPMC devices we still need to rely on the bootloader in gpmc_probe_generic_child()
2124 WARN(1, "enable GPMC debug to configure .dts timings for CS%i\n", in gpmc_probe_generic_child()
2127 "please add GPMC bootloader timings to .dts"); in gpmc_probe_generic_child()
2131 /* CS must be disabled while making changes to gpmc configuration */ in gpmc_probe_generic_child()
2136 * location in the gpmc address space. When booting with in gpmc_probe_generic_child()
2144 dev_err(&pdev->dev, "cannot remap GPMC CS %d to %pa\n", in gpmc_probe_generic_child()
2148 "GPMC CS %d start cannot be lesser than 0x%x\n", in gpmc_probe_generic_child()
2152 "GPMC CS %d end cannot be greater than 0x%x\n", in gpmc_probe_generic_child()
2204 "%pOF has no 'gpmc,device-width' property\n", in gpmc_probe_generic_child()
2214 waitpin_desc = gpiochip_request_own_desc(&gpmc->gpio_chip, in gpmc_probe_generic_child()
2233 dev_err(&pdev->dev, "failed to set gpmc timings for: %pOFn\n", in gpmc_probe_generic_child()
2262 dev_err(&pdev->dev, "failed to create gpmc child %pOFn\n", child); in gpmc_probe_generic_child()
2282 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-cs", in gpmc_probe_dt()
2296 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-waitpins", in gpmc_probe_dt()
2367 static int gpmc_gpio_init(struct gpmc_device *gpmc) in gpmc_gpio_init() argument
2371 gpmc->gpio_chip.parent = gpmc->dev; in gpmc_gpio_init()
2372 gpmc->gpio_chip.owner = THIS_MODULE; in gpmc_gpio_init()
2373 gpmc->gpio_chip.label = DEVICE_NAME; in gpmc_gpio_init()
2374 gpmc->gpio_chip.ngpio = gpmc_nr_waitpins; in gpmc_gpio_init()
2375 gpmc->gpio_chip.get_direction = gpmc_gpio_get_direction; in gpmc_gpio_init()
2376 gpmc->gpio_chip.direction_input = gpmc_gpio_direction_input; in gpmc_gpio_init()
2377 gpmc->gpio_chip.direction_output = gpmc_gpio_direction_output; in gpmc_gpio_init()
2378 gpmc->gpio_chip.set = gpmc_gpio_set; in gpmc_gpio_init()
2379 gpmc->gpio_chip.get = gpmc_gpio_get; in gpmc_gpio_init()
2380 gpmc->gpio_chip.base = -1; in gpmc_gpio_init()
2382 ret = devm_gpiochip_add_data(gpmc->dev, &gpmc->gpio_chip, NULL); in gpmc_gpio_init()
2384 dev_err(gpmc->dev, "could not register gpio chip: %d\n", ret); in gpmc_gpio_init()
2391 static void omap3_gpmc_save_context(struct gpmc_device *gpmc) in omap3_gpmc_save_context() argument
2396 if (!gpmc || !gpmc_base) in omap3_gpmc_save_context()
2399 gpmc_context = &gpmc->context; in omap3_gpmc_save_context()
2429 static void omap3_gpmc_restore_context(struct gpmc_device *gpmc) in omap3_gpmc_restore_context() argument
2434 if (!gpmc || !gpmc_base) in omap3_gpmc_restore_context()
2437 gpmc_context = &gpmc->context; in omap3_gpmc_restore_context()
2471 struct gpmc_device *gpmc; in omap_gpmc_context_notifier() local
2473 gpmc = container_of(nb, struct gpmc_device, nb); in omap_gpmc_context_notifier()
2474 if (gpmc->is_suspended || pm_runtime_suspended(gpmc->dev)) in omap_gpmc_context_notifier()
2479 omap3_gpmc_save_context(gpmc); in omap_gpmc_context_notifier()
2484 omap3_gpmc_restore_context(gpmc); in omap_gpmc_context_notifier()
2496 struct gpmc_device *gpmc; in gpmc_probe() local
2498 gpmc = devm_kzalloc(&pdev->dev, sizeof(*gpmc), GFP_KERNEL); in gpmc_probe()
2499 if (!gpmc) in gpmc_probe()
2502 gpmc->dev = &pdev->dev; in gpmc_probe()
2503 platform_set_drvdata(pdev, gpmc); in gpmc_probe()
2519 gpmc->irq = res->start; in gpmc_probe()
2523 dev_err(&pdev->dev, "Failed to get GPMC fck\n"); in gpmc_probe()
2528 dev_err(&pdev->dev, "Invalid GPMC fck clock rate\n"); in gpmc_probe()
2553 * GPMC IP revisions: in gpmc_probe()
2562 dev_info(gpmc->dev, "GPMC revision %d.%d\n", GPMC_REVISION_MAJOR(l), in gpmc_probe()
2566 rc = gpmc_gpio_init(gpmc); in gpmc_probe()
2570 gpmc->nirqs = GPMC_NR_NAND_IRQS + gpmc_nr_waitpins; in gpmc_probe()
2571 rc = gpmc_setup_irq(gpmc); in gpmc_probe()
2573 dev_err(gpmc->dev, "gpmc_setup_irq failed\n"); in gpmc_probe()
2579 gpmc->nb.notifier_call = omap_gpmc_context_notifier; in gpmc_probe()
2580 cpu_pm_register_notifier(&gpmc->nb); in gpmc_probe()
2594 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_remove() local
2596 cpu_pm_unregister_notifier(&gpmc->nb); in gpmc_remove()
2597 gpmc_free_irq(gpmc); in gpmc_remove()
2608 struct gpmc_device *gpmc = dev_get_drvdata(dev); in gpmc_suspend() local
2610 omap3_gpmc_save_context(gpmc); in gpmc_suspend()
2612 gpmc->is_suspended = 1; in gpmc_suspend()
2619 struct gpmc_device *gpmc = dev_get_drvdata(dev); in gpmc_resume() local
2622 omap3_gpmc_restore_context(gpmc); in gpmc_resume()
2623 gpmc->is_suspended = 0; in gpmc_resume()