Lines Matching full:gpmc
3 * GPMC support functions
32 #include <linux/omap-gpmc.h>
38 #define DEVICE_NAME "omap-gpmc"
40 /* GPMC register offsets */
67 /* GPMC ECC control settings */
96 * The first 1MB of GPMC address space is typically mapped to
99 * As GPMC minimum partition size is 16MB we can only start from
205 /* Structure to save gpmc cs context */
218 * Structure to save/restore gpmc context
417 * @name: DTS node name, w/o "gpmc,"
421 * raw format: gpmc,name = <value>
422 * tick format: gpmc,name = <value> /‍* x ns -- y ns; x ticks *‍/
462 pr_info("gpmc,%s = <%u>; /* %u ns - %u ns; %i ticks%s*/\n", in get_gpmc_timing_reg()
467 pr_info("gpmc,%s = <%u>;%s\n", name, l, in get_gpmc_timing_reg()
494 pr_info("gpmc cs%i %s:\n", cs, desc); in gpmc_show_regs()
504 * Note that gpmc,wait-pin handing wrongly assumes bit 8 is available,
511 pr_info("gpmc cs%i access configuration:\n", cs); in gpmc_cs_show_timings()
524 GPMC_GET_RAW_BOOL(GPMC_CS_CONFIG1, 29, 29, "gpmc,sync-read"); in gpmc_cs_show_timings()
538 pr_info("gpmc cs%i timings configuration:\n", cs); in gpmc_cs_show_timings()
621 pr_err("%s: GPMC CS%d: %s %d ns, %d ticks > %d ticks\n", in set_gpmc_timing_reg()
629 pr_info("GPMC CS%d: %-17s: %3d ticks, %3lu ns (was %3i ticks) %3d ns\n", in set_gpmc_timing_reg()
691 * @t: GPMC timing parameters.
692 * @s: GPMC timing settings.
708 * Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for in gpmc_cs_set_timings()
837 pr_info("GPMC CS%d CLK period is %lu ns (div %d)\n", in gpmc_cs_set_timings()
913 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_reserved() local
915 gpmc->flags |= GPMC_CS_RESERVED; in gpmc_cs_set_reserved()
920 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_reserved() local
922 return gpmc->flags & GPMC_CS_RESERVED; in gpmc_cs_reserved()
941 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_insert_mem() local
942 struct resource *res = &gpmc->mem; in gpmc_cs_insert_mem()
957 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_delete_mem() local
958 struct resource *res = &gpmc->mem; in gpmc_cs_delete_mem()
972 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_request() local
973 struct resource *res = &gpmc->mem; in gpmc_cs_request()
1018 struct gpmc_cs_data *gpmc; in gpmc_cs_free() local
1023 WARN(1, "Trying to free non-reserved GPMC CS%d\n", cs); in gpmc_cs_free()
1027 gpmc = &gpmc_cs[cs]; in gpmc_cs_free()
1028 res = &gpmc->mem; in gpmc_cs_free()
1039 * gpmc_configure - write request to configure gpmc
1080 * gpmc_omap_get_nand_ops - Get the GPMC NAND interface
1081 * @reg: the GPMC NAND register map exclusive for NAND use.
1082 * @cs: GPMC chip select number on which the NAND sits. The
1239 pr_warn("%s called before GPMC IRQ domain available\n", in gpmc_get_client_irq()
1341 struct gpmc_device *gpmc = d->host_data; in gpmc_irq_map() local
1343 irq_set_chip_data(virq, gpmc); in gpmc_irq_map()
1346 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1349 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1365 struct gpmc_device *gpmc = data; in gpmc_handle_irq() local
1373 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) { in gpmc_handle_irq()
1381 dev_warn(gpmc->dev, in gpmc_handle_irq()
1395 static int gpmc_setup_irq(struct gpmc_device *gpmc) in gpmc_setup_irq() argument
1407 gpmc->irq_chip.name = "gpmc"; in gpmc_setup_irq()
1408 gpmc->irq_chip.irq_enable = gpmc_irq_enable; in gpmc_setup_irq()
1409 gpmc->irq_chip.irq_disable = gpmc_irq_disable; in gpmc_setup_irq()
1410 gpmc->irq_chip.irq_ack = gpmc_irq_ack; in gpmc_setup_irq()
1411 gpmc->irq_chip.irq_mask = gpmc_irq_mask; in gpmc_setup_irq()
1412 gpmc->irq_chip.irq_unmask = gpmc_irq_unmask; in gpmc_setup_irq()
1413 gpmc->irq_chip.irq_set_type = gpmc_irq_set_type; in gpmc_setup_irq()
1415 gpmc_irq_domain = irq_domain_add_linear(gpmc->dev->of_node, in gpmc_setup_irq()
1416 gpmc->nirqs, in gpmc_setup_irq()
1418 gpmc); in gpmc_setup_irq()
1420 dev_err(gpmc->dev, "IRQ domain add failed\n"); in gpmc_setup_irq()
1424 rc = request_irq(gpmc->irq, gpmc_handle_irq, 0, "gpmc", gpmc); in gpmc_setup_irq()
1426 dev_err(gpmc->dev, "failed to request irq %d: %d\n", in gpmc_setup_irq()
1427 gpmc->irq, rc); in gpmc_setup_irq()
1435 static int gpmc_free_irq(struct gpmc_device *gpmc) in gpmc_free_irq() argument
1439 free_irq(gpmc->irq, gpmc); in gpmc_free_irq()
1441 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) in gpmc_free_irq()
1461 static void gpmc_mem_init(struct gpmc_device *gpmc) in gpmc_mem_init() argument
1465 if (!gpmc->data) { in gpmc_mem_init()
1470 gpmc_mem_root.start = gpmc->data->start; in gpmc_mem_init()
1471 gpmc_mem_root.end = gpmc->data->end; in gpmc_mem_init()
1811 * @cs: GPMC chip-select to program
1812 * @p: pointer to GPMC settings structure
1814 * Programs non-timing related settings for a GPMC chip-select, such as
1895 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_name() local
1897 gpmc->name = name; in gpmc_cs_set_name()
1902 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_get_name() local
1904 return gpmc->name; in gpmc_cs_get_name()
1927 * Make sure we ignore any device offsets from the GPMC partition in gpmc_cs_remap()
1929 * to the GPMC 16MB minimum granularity. in gpmc_cs_remap()
1951 * gpmc_read_settings_dt - read gpmc settings from device-tree
1952 * @np: pointer to device-tree node for a gpmc child device
1953 * @p: pointer to gpmc settings structure
1955 * Reads the GPMC settings for a GPMC child device from device-tree and
1956 * stores them in the GPMC settings structure passed. The GPMC settings
1964 p->sync_read = of_property_read_bool(np, "gpmc,sync-read"); in gpmc_read_settings_dt()
1965 p->sync_write = of_property_read_bool(np, "gpmc,sync-write"); in gpmc_read_settings_dt()
1966 of_property_read_u32(np, "gpmc,device-width", &p->device_width); in gpmc_read_settings_dt()
1967 of_property_read_u32(np, "gpmc,mux-add-data", &p->mux_add_data); in gpmc_read_settings_dt()
1969 if (!of_property_read_u32(np, "gpmc,burst-length", &p->burst_len)) { in gpmc_read_settings_dt()
1970 p->burst_wrap = of_property_read_bool(np, "gpmc,burst-wrap"); in gpmc_read_settings_dt()
1971 p->burst_read = of_property_read_bool(np, "gpmc,burst-read"); in gpmc_read_settings_dt()
1972 p->burst_write = of_property_read_bool(np, "gpmc,burst-write"); in gpmc_read_settings_dt()
1978 if (!of_property_read_u32(np, "gpmc,wait-pin", &p->wait_pin)) { in gpmc_read_settings_dt()
1980 "gpmc,wait-on-read"); in gpmc_read_settings_dt()
1982 "gpmc,wait-on-write"); in gpmc_read_settings_dt()
2000 of_property_read_u32(np, "gpmc,sync-clk-ps", &gpmc_t->sync_clk); in gpmc_read_timings_dt()
2003 of_property_read_u32(np, "gpmc,cs-on-ns", &gpmc_t->cs_on); in gpmc_read_timings_dt()
2004 of_property_read_u32(np, "gpmc,cs-rd-off-ns", &gpmc_t->cs_rd_off); in gpmc_read_timings_dt()
2005 of_property_read_u32(np, "gpmc,cs-wr-off-ns", &gpmc_t->cs_wr_off); in gpmc_read_timings_dt()
2008 of_property_read_u32(np, "gpmc,adv-on-ns", &gpmc_t->adv_on); in gpmc_read_timings_dt()
2009 of_property_read_u32(np, "gpmc,adv-rd-off-ns", &gpmc_t->adv_rd_off); in gpmc_read_timings_dt()
2010 of_property_read_u32(np, "gpmc,adv-wr-off-ns", &gpmc_t->adv_wr_off); in gpmc_read_timings_dt()
2011 of_property_read_u32(np, "gpmc,adv-aad-mux-on-ns", in gpmc_read_timings_dt()
2013 of_property_read_u32(np, "gpmc,adv-aad-mux-rd-off-ns", in gpmc_read_timings_dt()
2015 of_property_read_u32(np, "gpmc,adv-aad-mux-wr-off-ns", in gpmc_read_timings_dt()
2019 of_property_read_u32(np, "gpmc,we-on-ns", &gpmc_t->we_on); in gpmc_read_timings_dt()
2020 of_property_read_u32(np, "gpmc,we-off-ns", &gpmc_t->we_off); in gpmc_read_timings_dt()
2023 of_property_read_u32(np, "gpmc,oe-on-ns", &gpmc_t->oe_on); in gpmc_read_timings_dt()
2024 of_property_read_u32(np, "gpmc,oe-off-ns", &gpmc_t->oe_off); in gpmc_read_timings_dt()
2025 of_property_read_u32(np, "gpmc,oe-aad-mux-on-ns", in gpmc_read_timings_dt()
2027 of_property_read_u32(np, "gpmc,oe-aad-mux-off-ns", in gpmc_read_timings_dt()
2031 of_property_read_u32(np, "gpmc,page-burst-access-ns", in gpmc_read_timings_dt()
2033 of_property_read_u32(np, "gpmc,access-ns", &gpmc_t->access); in gpmc_read_timings_dt()
2034 of_property_read_u32(np, "gpmc,rd-cycle-ns", &gpmc_t->rd_cycle); in gpmc_read_timings_dt()
2035 of_property_read_u32(np, "gpmc,wr-cycle-ns", &gpmc_t->wr_cycle); in gpmc_read_timings_dt()
2036 of_property_read_u32(np, "gpmc,bus-turnaround-ns", in gpmc_read_timings_dt()
2038 of_property_read_u32(np, "gpmc,cycle2cycle-delay-ns", in gpmc_read_timings_dt()
2040 of_property_read_u32(np, "gpmc,wait-monitoring-ns", in gpmc_read_timings_dt()
2042 of_property_read_u32(np, "gpmc,clk-activation-ns", in gpmc_read_timings_dt()
2046 of_property_read_u32(np, "gpmc,wr-access-ns", &gpmc_t->wr_access); in gpmc_read_timings_dt()
2047 of_property_read_u32(np, "gpmc,wr-data-mux-bus-ns", in gpmc_read_timings_dt()
2054 of_property_read_bool(np, "gpmc,cycle2cycle-diffcsen"); in gpmc_read_timings_dt()
2056 of_property_read_bool(np, "gpmc,cycle2cycle-samecsen"); in gpmc_read_timings_dt()
2057 p->we_extra_delay = of_property_read_bool(np, "gpmc,we-extra-delay"); in gpmc_read_timings_dt()
2058 p->oe_extra_delay = of_property_read_bool(np, "gpmc,oe-extra-delay"); in gpmc_read_timings_dt()
2059 p->adv_extra_delay = of_property_read_bool(np, "gpmc,adv-extra-delay"); in gpmc_read_timings_dt()
2060 p->cs_extra_delay = of_property_read_bool(np, "gpmc,cs-extra-delay"); in gpmc_read_timings_dt()
2062 of_property_read_bool(np, "gpmc,time-para-granularity"); in gpmc_read_timings_dt()
2066 * gpmc_probe_generic_child - configures the gpmc for a child device
2067 * @pdev: pointer to gpmc platform device
2070 * Allocates and configures a GPMC chip-select for a child device.
2084 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_probe_generic_child() local
2109 dev_err(&pdev->dev, "cannot request GPMC CS %d\n", cs); in gpmc_probe_generic_child()
2118 * For some GPMC devices we still need to rely on the bootloader in gpmc_probe_generic_child()
2123 WARN(1, "enable GPMC debug to configure .dts timings for CS%i\n", in gpmc_probe_generic_child()
2126 "please add GPMC bootloader timings to .dts"); in gpmc_probe_generic_child()
2130 /* CS must be disabled while making changes to gpmc configuration */ in gpmc_probe_generic_child()
2135 * location in the gpmc address space. When booting with in gpmc_probe_generic_child()
2143 dev_err(&pdev->dev, "cannot remap GPMC CS %d to %pa\n", in gpmc_probe_generic_child()
2147 "GPMC CS %d start cannot be lesser than 0x%x\n", in gpmc_probe_generic_child()
2151 "GPMC CS %d end cannot be greater than 0x%x\n", in gpmc_probe_generic_child()
2203 "%pOF has no 'gpmc,device-width' property\n", in gpmc_probe_generic_child()
2213 waitpin_desc = gpiochip_request_own_desc(&gpmc->gpio_chip, in gpmc_probe_generic_child()
2232 dev_err(&pdev->dev, "failed to set gpmc timings for: %pOFn\n", in gpmc_probe_generic_child()
2259 dev_err(&pdev->dev, "failed to create gpmc child %pOFn\n", child); in gpmc_probe_generic_child()
2281 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-cs", in gpmc_probe_dt()
2295 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-waitpins", in gpmc_probe_dt()
2366 static int gpmc_gpio_init(struct gpmc_device *gpmc) in gpmc_gpio_init() argument
2370 gpmc->gpio_chip.parent = gpmc->dev; in gpmc_gpio_init()
2371 gpmc->gpio_chip.owner = THIS_MODULE; in gpmc_gpio_init()
2372 gpmc->gpio_chip.label = DEVICE_NAME; in gpmc_gpio_init()
2373 gpmc->gpio_chip.ngpio = gpmc_nr_waitpins; in gpmc_gpio_init()
2374 gpmc->gpio_chip.get_direction = gpmc_gpio_get_direction; in gpmc_gpio_init()
2375 gpmc->gpio_chip.direction_input = gpmc_gpio_direction_input; in gpmc_gpio_init()
2376 gpmc->gpio_chip.direction_output = gpmc_gpio_direction_output; in gpmc_gpio_init()
2377 gpmc->gpio_chip.set = gpmc_gpio_set; in gpmc_gpio_init()
2378 gpmc->gpio_chip.get = gpmc_gpio_get; in gpmc_gpio_init()
2379 gpmc->gpio_chip.base = -1; in gpmc_gpio_init()
2381 ret = devm_gpiochip_add_data(gpmc->dev, &gpmc->gpio_chip, NULL); in gpmc_gpio_init()
2383 dev_err(gpmc->dev, "could not register gpio chip: %d\n", ret); in gpmc_gpio_init()
2390 static void omap3_gpmc_save_context(struct gpmc_device *gpmc) in omap3_gpmc_save_context() argument
2395 if (!gpmc || !gpmc_base) in omap3_gpmc_save_context()
2398 gpmc_context = &gpmc->context; in omap3_gpmc_save_context()
2428 static void omap3_gpmc_restore_context(struct gpmc_device *gpmc) in omap3_gpmc_restore_context() argument
2433 if (!gpmc || !gpmc_base) in omap3_gpmc_restore_context()
2436 gpmc_context = &gpmc->context; in omap3_gpmc_restore_context()
2470 struct gpmc_device *gpmc; in omap_gpmc_context_notifier() local
2472 gpmc = container_of(nb, struct gpmc_device, nb); in omap_gpmc_context_notifier()
2473 if (gpmc->is_suspended || pm_runtime_suspended(gpmc->dev)) in omap_gpmc_context_notifier()
2478 omap3_gpmc_save_context(gpmc); in omap_gpmc_context_notifier()
2483 omap3_gpmc_restore_context(gpmc); in omap_gpmc_context_notifier()
2495 struct gpmc_device *gpmc; in gpmc_probe() local
2497 gpmc = devm_kzalloc(&pdev->dev, sizeof(*gpmc), GFP_KERNEL); in gpmc_probe()
2498 if (!gpmc) in gpmc_probe()
2501 gpmc->dev = &pdev->dev; in gpmc_probe()
2502 platform_set_drvdata(pdev, gpmc); in gpmc_probe()
2521 gpmc->data = res; in gpmc_probe()
2524 gpmc->irq = platform_get_irq(pdev, 0); in gpmc_probe()
2525 if (gpmc->irq < 0) in gpmc_probe()
2526 return gpmc->irq; in gpmc_probe()
2530 dev_err(&pdev->dev, "Failed to get GPMC fck\n"); in gpmc_probe()
2535 dev_err(&pdev->dev, "Invalid GPMC fck clock rate\n"); in gpmc_probe()
2560 * GPMC IP revisions: in gpmc_probe()
2569 dev_info(gpmc->dev, "GPMC revision %d.%d\n", GPMC_REVISION_MAJOR(l), in gpmc_probe()
2572 gpmc_mem_init(gpmc); in gpmc_probe()
2573 rc = gpmc_gpio_init(gpmc); in gpmc_probe()
2577 gpmc->nirqs = GPMC_NR_NAND_IRQS + gpmc_nr_waitpins; in gpmc_probe()
2578 rc = gpmc_setup_irq(gpmc); in gpmc_probe()
2580 dev_err(gpmc->dev, "gpmc_setup_irq failed\n"); in gpmc_probe()
2586 gpmc->nb.notifier_call = omap_gpmc_context_notifier; in gpmc_probe()
2587 cpu_pm_register_notifier(&gpmc->nb); in gpmc_probe()
2601 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_remove() local
2603 cpu_pm_unregister_notifier(&gpmc->nb); in gpmc_remove()
2604 gpmc_free_irq(gpmc); in gpmc_remove()
2615 struct gpmc_device *gpmc = dev_get_drvdata(dev); in gpmc_suspend() local
2617 omap3_gpmc_save_context(gpmc); in gpmc_suspend()
2619 gpmc->is_suspended = 1; in gpmc_suspend()
2626 struct gpmc_device *gpmc = dev_get_drvdata(dev); in gpmc_resume() local
2629 omap3_gpmc_restore_context(gpmc); in gpmc_resume()
2630 gpmc->is_suspended = 0; in gpmc_resume()
2640 { .compatible = "ti,omap2420-gpmc" },
2641 { .compatible = "ti,omap2430-gpmc" },
2642 { .compatible = "ti,omap3430-gpmc" }, /* omap3430 & omap3630 */
2643 { .compatible = "ti,omap4430-gpmc" }, /* omap4430 & omap4460 & omap543x */
2644 { .compatible = "ti,am3352-gpmc" }, /* am335x devices */
2645 { .compatible = "ti,am64-gpmc" },
2663 MODULE_DESCRIPTION("Texas Instruments GPMC driver");