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
206 /* Structure to save gpmc cs context */
219 * Structure to save/restore gpmc context
425 * @name: DTS node name, w/o "gpmc,"
429 * raw format: gpmc,name = <value>
430 * tick format: gpmc,name = <value> /‍* x ns -- y ns; x ticks *‍/
470 pr_info("gpmc,%s = <%u>; /* %u ns - %u ns; %i ticks%s*/\n", in get_gpmc_timing_reg()
475 pr_info("gpmc,%s = <%u>;%s\n", name, l, in get_gpmc_timing_reg()
502 pr_info("gpmc cs%i %s:\n", cs, desc); in gpmc_show_regs()
512 * Note that gpmc,wait-pin handing wrongly assumes bit 8 is available,
519 pr_info("gpmc cs%i access configuration:\n", cs); in gpmc_cs_show_timings()
532 GPMC_GET_RAW_BOOL(GPMC_CS_CONFIG1, 29, 29, "gpmc,sync-read"); in gpmc_cs_show_timings()
546 pr_info("gpmc cs%i timings configuration:\n", cs); in gpmc_cs_show_timings()
629 pr_err("%s: GPMC CS%d: %s %d ns, %d ticks > %d ticks\n", in set_gpmc_timing_reg()
637 pr_info("GPMC CS%d: %-17s: %3d ticks, %3lu ns (was %3i ticks) %3d ns\n", in set_gpmc_timing_reg()
699 * @t: GPMC timing parameters.
700 * @s: GPMC timing settings.
716 * Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for in gpmc_cs_set_timings()
845 pr_info("GPMC CS%d CLK period is %lu ns (div %d)\n", in gpmc_cs_set_timings()
921 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_reserved() local
923 gpmc->flags |= GPMC_CS_RESERVED; in gpmc_cs_set_reserved()
928 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_reserved() local
930 return gpmc->flags & GPMC_CS_RESERVED; in gpmc_cs_reserved()
949 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_insert_mem() local
950 struct resource *res = &gpmc->mem; in gpmc_cs_insert_mem()
965 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_delete_mem() local
966 struct resource *res = &gpmc->mem; in gpmc_cs_delete_mem()
980 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_request() local
981 struct resource *res = &gpmc->mem; in gpmc_cs_request()
1026 struct gpmc_cs_data *gpmc; in gpmc_cs_free() local
1031 WARN(1, "Trying to free non-reserved GPMC CS%d\n", cs); in gpmc_cs_free()
1035 gpmc = &gpmc_cs[cs]; in gpmc_cs_free()
1036 res = &gpmc->mem; in gpmc_cs_free()
1051 static int gpmc_alloc_waitpin(struct gpmc_device *gpmc, in gpmc_alloc_waitpin() argument
1061 waitpin = &gpmc->waitpins[p->wait_pin]; in gpmc_alloc_waitpin()
1068 waitpin_desc = gpiochip_request_own_desc(&gpmc->gpio_chip, in gpmc_alloc_waitpin()
1085 dev_err(gpmc->dev, in gpmc_alloc_waitpin()
1089 dev_info(gpmc->dev, "shared wait-pin: %d\n", waitpin->pin); in gpmc_alloc_waitpin()
1095 static void gpmc_free_waitpin(struct gpmc_device *gpmc, in gpmc_free_waitpin() argument
1099 gpiochip_free_own_desc(gpmc->waitpins[wait_pin].desc); in gpmc_free_waitpin()
1103 * gpmc_configure - write request to configure gpmc
1144 * gpmc_omap_get_nand_ops - Get the GPMC NAND interface
1145 * @reg: the GPMC NAND register map exclusive for NAND use.
1146 * @cs: GPMC chip select number on which the NAND sits. The
1303 pr_warn("%s called before GPMC IRQ domain available\n", in gpmc_get_client_irq()
1405 struct gpmc_device *gpmc = d->host_data; in gpmc_irq_map() local
1407 irq_set_chip_data(virq, gpmc); in gpmc_irq_map()
1410 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1413 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1429 struct gpmc_device *gpmc = data; in gpmc_handle_irq() local
1437 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) { in gpmc_handle_irq()
1445 dev_warn(gpmc->dev, in gpmc_handle_irq()
1459 static int gpmc_setup_irq(struct gpmc_device *gpmc) in gpmc_setup_irq() argument
1471 gpmc->irq_chip.name = "gpmc"; in gpmc_setup_irq()
1472 gpmc->irq_chip.irq_enable = gpmc_irq_enable; in gpmc_setup_irq()
1473 gpmc->irq_chip.irq_disable = gpmc_irq_disable; in gpmc_setup_irq()
1474 gpmc->irq_chip.irq_ack = gpmc_irq_ack; in gpmc_setup_irq()
1475 gpmc->irq_chip.irq_mask = gpmc_irq_mask; in gpmc_setup_irq()
1476 gpmc->irq_chip.irq_unmask = gpmc_irq_unmask; in gpmc_setup_irq()
1477 gpmc->irq_chip.irq_set_type = gpmc_irq_set_type; in gpmc_setup_irq()
1479 gpmc_irq_domain = irq_domain_add_linear(gpmc->dev->of_node, in gpmc_setup_irq()
1480 gpmc->nirqs, in gpmc_setup_irq()
1482 gpmc); in gpmc_setup_irq()
1484 dev_err(gpmc->dev, "IRQ domain add failed\n"); in gpmc_setup_irq()
1488 rc = request_irq(gpmc->irq, gpmc_handle_irq, 0, "gpmc", gpmc); in gpmc_setup_irq()
1490 dev_err(gpmc->dev, "failed to request irq %d: %d\n", in gpmc_setup_irq()
1491 gpmc->irq, rc); in gpmc_setup_irq()
1499 static int gpmc_free_irq(struct gpmc_device *gpmc) in gpmc_free_irq() argument
1503 free_irq(gpmc->irq, gpmc); in gpmc_free_irq()
1505 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) in gpmc_free_irq()
1525 static void gpmc_mem_init(struct gpmc_device *gpmc) in gpmc_mem_init() argument
1529 if (!gpmc->data) { in gpmc_mem_init()
1534 gpmc_mem_root.start = gpmc->data->start; in gpmc_mem_init()
1535 gpmc_mem_root.end = gpmc->data->end; in gpmc_mem_init()
1875 * @cs: GPMC chip-select to program
1876 * @p: pointer to GPMC settings structure
1878 * Programs non-timing related settings for a GPMC chip-select, such as
1971 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_name() local
1973 gpmc->name = name; in gpmc_cs_set_name()
1978 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_get_name() local
1980 return gpmc->name; in gpmc_cs_get_name()
2003 * Make sure we ignore any device offsets from the GPMC partition in gpmc_cs_remap()
2005 * to the GPMC 16MB minimum granularity. in gpmc_cs_remap()
2027 * gpmc_read_settings_dt - read gpmc settings from device-tree
2028 * @np: pointer to device-tree node for a gpmc child device
2029 * @p: pointer to gpmc settings structure
2031 * Reads the GPMC settings for a GPMC child device from device-tree and
2032 * stores them in the GPMC settings structure passed. The GPMC settings
2040 p->sync_read = of_property_read_bool(np, "gpmc,sync-read"); in gpmc_read_settings_dt()
2041 p->sync_write = of_property_read_bool(np, "gpmc,sync-write"); in gpmc_read_settings_dt()
2042 of_property_read_u32(np, "gpmc,device-width", &p->device_width); in gpmc_read_settings_dt()
2043 of_property_read_u32(np, "gpmc,mux-add-data", &p->mux_add_data); in gpmc_read_settings_dt()
2045 if (!of_property_read_u32(np, "gpmc,burst-length", &p->burst_len)) { in gpmc_read_settings_dt()
2046 p->burst_wrap = of_property_read_bool(np, "gpmc,burst-wrap"); in gpmc_read_settings_dt()
2047 p->burst_read = of_property_read_bool(np, "gpmc,burst-read"); in gpmc_read_settings_dt()
2048 p->burst_write = of_property_read_bool(np, "gpmc,burst-write"); in gpmc_read_settings_dt()
2057 if (!of_property_read_u32(np, "gpmc,wait-pin", &p->wait_pin)) { in gpmc_read_settings_dt()
2074 "gpmc,wait-on-read"); in gpmc_read_settings_dt()
2076 "gpmc,wait-on-write"); in gpmc_read_settings_dt()
2094 of_property_read_u32(np, "gpmc,sync-clk-ps", &gpmc_t->sync_clk); in gpmc_read_timings_dt()
2097 of_property_read_u32(np, "gpmc,cs-on-ns", &gpmc_t->cs_on); in gpmc_read_timings_dt()
2098 of_property_read_u32(np, "gpmc,cs-rd-off-ns", &gpmc_t->cs_rd_off); in gpmc_read_timings_dt()
2099 of_property_read_u32(np, "gpmc,cs-wr-off-ns", &gpmc_t->cs_wr_off); in gpmc_read_timings_dt()
2102 of_property_read_u32(np, "gpmc,adv-on-ns", &gpmc_t->adv_on); in gpmc_read_timings_dt()
2103 of_property_read_u32(np, "gpmc,adv-rd-off-ns", &gpmc_t->adv_rd_off); in gpmc_read_timings_dt()
2104 of_property_read_u32(np, "gpmc,adv-wr-off-ns", &gpmc_t->adv_wr_off); in gpmc_read_timings_dt()
2105 of_property_read_u32(np, "gpmc,adv-aad-mux-on-ns", in gpmc_read_timings_dt()
2107 of_property_read_u32(np, "gpmc,adv-aad-mux-rd-off-ns", in gpmc_read_timings_dt()
2109 of_property_read_u32(np, "gpmc,adv-aad-mux-wr-off-ns", in gpmc_read_timings_dt()
2113 of_property_read_u32(np, "gpmc,we-on-ns", &gpmc_t->we_on); in gpmc_read_timings_dt()
2114 of_property_read_u32(np, "gpmc,we-off-ns", &gpmc_t->we_off); in gpmc_read_timings_dt()
2117 of_property_read_u32(np, "gpmc,oe-on-ns", &gpmc_t->oe_on); in gpmc_read_timings_dt()
2118 of_property_read_u32(np, "gpmc,oe-off-ns", &gpmc_t->oe_off); in gpmc_read_timings_dt()
2119 of_property_read_u32(np, "gpmc,oe-aad-mux-on-ns", in gpmc_read_timings_dt()
2121 of_property_read_u32(np, "gpmc,oe-aad-mux-off-ns", in gpmc_read_timings_dt()
2125 of_property_read_u32(np, "gpmc,page-burst-access-ns", in gpmc_read_timings_dt()
2127 of_property_read_u32(np, "gpmc,access-ns", &gpmc_t->access); in gpmc_read_timings_dt()
2128 of_property_read_u32(np, "gpmc,rd-cycle-ns", &gpmc_t->rd_cycle); in gpmc_read_timings_dt()
2129 of_property_read_u32(np, "gpmc,wr-cycle-ns", &gpmc_t->wr_cycle); in gpmc_read_timings_dt()
2130 of_property_read_u32(np, "gpmc,bus-turnaround-ns", in gpmc_read_timings_dt()
2132 of_property_read_u32(np, "gpmc,cycle2cycle-delay-ns", in gpmc_read_timings_dt()
2134 of_property_read_u32(np, "gpmc,wait-monitoring-ns", in gpmc_read_timings_dt()
2136 of_property_read_u32(np, "gpmc,clk-activation-ns", in gpmc_read_timings_dt()
2140 of_property_read_u32(np, "gpmc,wr-access-ns", &gpmc_t->wr_access); in gpmc_read_timings_dt()
2141 of_property_read_u32(np, "gpmc,wr-data-mux-bus-ns", in gpmc_read_timings_dt()
2148 of_property_read_bool(np, "gpmc,cycle2cycle-diffcsen"); in gpmc_read_timings_dt()
2150 of_property_read_bool(np, "gpmc,cycle2cycle-samecsen"); in gpmc_read_timings_dt()
2151 p->we_extra_delay = of_property_read_bool(np, "gpmc,we-extra-delay"); in gpmc_read_timings_dt()
2152 p->oe_extra_delay = of_property_read_bool(np, "gpmc,oe-extra-delay"); in gpmc_read_timings_dt()
2153 p->adv_extra_delay = of_property_read_bool(np, "gpmc,adv-extra-delay"); in gpmc_read_timings_dt()
2154 p->cs_extra_delay = of_property_read_bool(np, "gpmc,cs-extra-delay"); in gpmc_read_timings_dt()
2156 of_property_read_bool(np, "gpmc,time-para-granularity"); in gpmc_read_timings_dt()
2160 * gpmc_probe_generic_child - configures the gpmc for a child device
2161 * @pdev: pointer to gpmc platform device
2164 * Allocates and configures a GPMC chip-select for a child device.
2177 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_probe_generic_child() local
2202 dev_err(&pdev->dev, "cannot request GPMC CS %d\n", cs); in gpmc_probe_generic_child()
2211 * For some GPMC devices we still need to rely on the bootloader in gpmc_probe_generic_child()
2216 WARN(1, "enable GPMC debug to configure .dts timings for CS%i\n", in gpmc_probe_generic_child()
2219 "please add GPMC bootloader timings to .dts"); in gpmc_probe_generic_child()
2223 /* CS must be disabled while making changes to gpmc configuration */ in gpmc_probe_generic_child()
2228 * location in the gpmc address space. When booting with in gpmc_probe_generic_child()
2236 dev_err(&pdev->dev, "cannot remap GPMC CS %d to %pa\n", in gpmc_probe_generic_child()
2240 "GPMC CS %d start cannot be lesser than 0x%x\n", in gpmc_probe_generic_child()
2244 "GPMC CS %d end cannot be greater than 0x%x\n", in gpmc_probe_generic_child()
2296 "%pOF has no 'gpmc,device-width' property\n", in gpmc_probe_generic_child()
2304 ret = gpmc_alloc_waitpin(gpmc, &gpmc_s); in gpmc_probe_generic_child()
2317 dev_err(&pdev->dev, "failed to set gpmc timings for: %pOFn\n", in gpmc_probe_generic_child()
2344 dev_err(&pdev->dev, "failed to create gpmc child %pOFn\n", child); in gpmc_probe_generic_child()
2348 gpmc_free_waitpin(gpmc, gpmc_s.wait_pin); in gpmc_probe_generic_child()
2366 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-cs", in gpmc_probe_dt()
2380 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-waitpins", in gpmc_probe_dt()
2451 static int gpmc_gpio_init(struct gpmc_device *gpmc) in gpmc_gpio_init() argument
2455 gpmc->gpio_chip.parent = gpmc->dev; in gpmc_gpio_init()
2456 gpmc->gpio_chip.owner = THIS_MODULE; in gpmc_gpio_init()
2457 gpmc->gpio_chip.label = DEVICE_NAME; in gpmc_gpio_init()
2458 gpmc->gpio_chip.ngpio = gpmc_nr_waitpins; in gpmc_gpio_init()
2459 gpmc->gpio_chip.get_direction = gpmc_gpio_get_direction; in gpmc_gpio_init()
2460 gpmc->gpio_chip.direction_input = gpmc_gpio_direction_input; in gpmc_gpio_init()
2461 gpmc->gpio_chip.direction_output = gpmc_gpio_direction_output; in gpmc_gpio_init()
2462 gpmc->gpio_chip.set = gpmc_gpio_set; in gpmc_gpio_init()
2463 gpmc->gpio_chip.get = gpmc_gpio_get; in gpmc_gpio_init()
2464 gpmc->gpio_chip.base = -1; in gpmc_gpio_init()
2466 ret = devm_gpiochip_add_data(gpmc->dev, &gpmc->gpio_chip, NULL); in gpmc_gpio_init()
2468 dev_err(gpmc->dev, "could not register gpio chip: %d\n", ret); in gpmc_gpio_init()
2475 static void omap3_gpmc_save_context(struct gpmc_device *gpmc) in omap3_gpmc_save_context() argument
2480 if (!gpmc || !gpmc_base) in omap3_gpmc_save_context()
2483 gpmc_context = &gpmc->context; in omap3_gpmc_save_context()
2513 static void omap3_gpmc_restore_context(struct gpmc_device *gpmc) in omap3_gpmc_restore_context() argument
2518 if (!gpmc || !gpmc_base) in omap3_gpmc_restore_context()
2521 gpmc_context = &gpmc->context; in omap3_gpmc_restore_context()
2555 struct gpmc_device *gpmc; in omap_gpmc_context_notifier() local
2557 gpmc = container_of(nb, struct gpmc_device, nb); in omap_gpmc_context_notifier()
2558 if (gpmc->is_suspended || pm_runtime_suspended(gpmc->dev)) in omap_gpmc_context_notifier()
2563 omap3_gpmc_save_context(gpmc); in omap_gpmc_context_notifier()
2568 omap3_gpmc_restore_context(gpmc); in omap_gpmc_context_notifier()
2580 struct gpmc_device *gpmc; in gpmc_probe() local
2582 gpmc = devm_kzalloc(&pdev->dev, sizeof(*gpmc), GFP_KERNEL); in gpmc_probe()
2583 if (!gpmc) in gpmc_probe()
2586 gpmc->dev = &pdev->dev; in gpmc_probe()
2587 platform_set_drvdata(pdev, gpmc); in gpmc_probe()
2606 gpmc->data = res; in gpmc_probe()
2609 gpmc->irq = platform_get_irq(pdev, 0); in gpmc_probe()
2610 if (gpmc->irq < 0) in gpmc_probe()
2611 return gpmc->irq; in gpmc_probe()
2615 dev_err(&pdev->dev, "Failed to get GPMC fck\n"); in gpmc_probe()
2620 dev_err(&pdev->dev, "Invalid GPMC fck clock rate\n"); in gpmc_probe()
2633 gpmc->waitpins = devm_kzalloc(&pdev->dev, in gpmc_probe()
2636 if (!gpmc->waitpins) in gpmc_probe()
2640 gpmc->waitpins[i].pin = GPMC_WAITPIN_INVALID; in gpmc_probe()
2654 * GPMC IP revisions: in gpmc_probe()
2663 dev_info(gpmc->dev, "GPMC revision %d.%d\n", GPMC_REVISION_MAJOR(l), in gpmc_probe()
2666 gpmc_mem_init(gpmc); in gpmc_probe()
2667 rc = gpmc_gpio_init(gpmc); in gpmc_probe()
2671 gpmc->nirqs = GPMC_NR_NAND_IRQS + gpmc_nr_waitpins; in gpmc_probe()
2672 rc = gpmc_setup_irq(gpmc); in gpmc_probe()
2674 dev_err(gpmc->dev, "gpmc_setup_irq failed\n"); in gpmc_probe()
2680 gpmc->nb.notifier_call = omap_gpmc_context_notifier; in gpmc_probe()
2681 cpu_pm_register_notifier(&gpmc->nb); in gpmc_probe()
2696 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_remove() local
2698 cpu_pm_unregister_notifier(&gpmc->nb); in gpmc_remove()
2700 gpmc_free_waitpin(gpmc, i); in gpmc_remove()
2701 gpmc_free_irq(gpmc); in gpmc_remove()
2712 struct gpmc_device *gpmc = dev_get_drvdata(dev); in gpmc_suspend() local
2714 omap3_gpmc_save_context(gpmc); in gpmc_suspend()
2716 gpmc->is_suspended = 1; in gpmc_suspend()
2723 struct gpmc_device *gpmc = dev_get_drvdata(dev); in gpmc_resume() local
2726 omap3_gpmc_restore_context(gpmc); in gpmc_resume()
2727 gpmc->is_suspended = 0; in gpmc_resume()
2737 { .compatible = "ti,omap2420-gpmc" },
2738 { .compatible = "ti,omap2430-gpmc" },
2739 { .compatible = "ti,omap3430-gpmc" }, /* omap3430 & omap3630 */
2740 { .compatible = "ti,omap4430-gpmc" }, /* omap4430 & omap4460 & omap543x */
2741 { .compatible = "ti,am3352-gpmc" }, /* am335x devices */
2742 { .compatible = "ti,am64-gpmc" },
2760 MODULE_DESCRIPTION("Texas Instruments GPMC driver");