Lines Matching full:gpmc
3 * GPMC support functions
30 #include <linux/omap-gpmc.h>
36 #define DEVICE_NAME "omap-gpmc"
38 /* GPMC register offsets */
65 /* GPMC ECC control settings */
94 * The first 1MB of GPMC address space is typically mapped to
97 * As GPMC minimum partition size is 16MB we can only start from
203 /* Structure to save gpmc cs context */
216 * Structure to save/restore gpmc context
411 * @name: DTS node name, w/o "gpmc,"
415 * raw format: gpmc,name = <value>
416 * tick format: gpmc,name = <value> /‍* x ns -- y ns; x ticks *‍/
456 pr_info("gpmc,%s = <%u>; /* %u ns - %u ns; %i ticks%s*/\n", in get_gpmc_timing_reg()
461 pr_info("gpmc,%s = <%u>;%s\n", name, l, in get_gpmc_timing_reg()
488 pr_info("gpmc cs%i %s:\n", cs, desc); in gpmc_show_regs()
498 * Note that gpmc,wait-pin handing wrongly assumes bit 8 is available,
505 pr_info("gpmc cs%i access configuration:\n", cs); in gpmc_cs_show_timings()
518 GPMC_GET_RAW_BOOL(GPMC_CS_CONFIG1, 29, 29, "gpmc,sync-read"); in gpmc_cs_show_timings()
532 pr_info("gpmc cs%i timings configuration:\n", cs); in gpmc_cs_show_timings()
615 pr_err("%s: GPMC CS%d: %s %d ns, %d ticks > %d ticks\n", in set_gpmc_timing_reg()
623 pr_info("GPMC CS%d: %-17s: %3d ticks, %3lu ns (was %3i ticks) %3d ns\n", in set_gpmc_timing_reg()
685 * @t: GPMC timing parameters.
686 * @s: GPMC timing settings.
702 * Calculate GPMCFCLKDIVIDER independent of gpmc,sync-clk-ps in DT for in gpmc_cs_set_timings()
831 pr_info("GPMC CS%d CLK period is %lu ns (div %d)\n", in gpmc_cs_set_timings()
907 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_reserved() local
909 gpmc->flags |= GPMC_CS_RESERVED; in gpmc_cs_set_reserved()
914 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_reserved() local
916 return gpmc->flags & GPMC_CS_RESERVED; in gpmc_cs_reserved()
935 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_insert_mem() local
936 struct resource *res = &gpmc->mem; in gpmc_cs_insert_mem()
951 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_delete_mem() local
952 struct resource *res = &gpmc->mem; in gpmc_cs_delete_mem()
966 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_request() local
967 struct resource *res = &gpmc->mem; in gpmc_cs_request()
1012 struct gpmc_cs_data *gpmc; in gpmc_cs_free() local
1017 WARN(1, "Trying to free non-reserved GPMC CS%d\n", cs); in gpmc_cs_free()
1021 gpmc = &gpmc_cs[cs]; in gpmc_cs_free()
1022 res = &gpmc->mem; in gpmc_cs_free()
1033 * gpmc_configure - write request to configure gpmc
1074 * gpmc_omap_get_nand_ops - Get the GPMC NAND interface
1075 * @reg: the GPMC NAND register map exclusive for NAND use.
1076 * @cs: GPMC chip select number on which the NAND sits. The
1233 pr_warn("%s called before GPMC IRQ domain available\n", in gpmc_get_client_irq()
1335 struct gpmc_device *gpmc = d->host_data; in gpmc_irq_map() local
1337 irq_set_chip_data(virq, gpmc); in gpmc_irq_map()
1340 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1343 irq_set_chip_and_handler(virq, &gpmc->irq_chip, in gpmc_irq_map()
1359 struct gpmc_device *gpmc = data; in gpmc_handle_irq() local
1367 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) { in gpmc_handle_irq()
1375 dev_warn(gpmc->dev, in gpmc_handle_irq()
1389 static int gpmc_setup_irq(struct gpmc_device *gpmc) in gpmc_setup_irq() argument
1401 gpmc->irq_chip.name = "gpmc"; in gpmc_setup_irq()
1402 gpmc->irq_chip.irq_enable = gpmc_irq_enable; in gpmc_setup_irq()
1403 gpmc->irq_chip.irq_disable = gpmc_irq_disable; in gpmc_setup_irq()
1404 gpmc->irq_chip.irq_ack = gpmc_irq_ack; in gpmc_setup_irq()
1405 gpmc->irq_chip.irq_mask = gpmc_irq_mask; in gpmc_setup_irq()
1406 gpmc->irq_chip.irq_unmask = gpmc_irq_unmask; in gpmc_setup_irq()
1407 gpmc->irq_chip.irq_set_type = gpmc_irq_set_type; in gpmc_setup_irq()
1409 gpmc_irq_domain = irq_domain_add_linear(gpmc->dev->of_node, in gpmc_setup_irq()
1410 gpmc->nirqs, in gpmc_setup_irq()
1412 gpmc); in gpmc_setup_irq()
1414 dev_err(gpmc->dev, "IRQ domain add failed\n"); in gpmc_setup_irq()
1418 rc = request_irq(gpmc->irq, gpmc_handle_irq, 0, "gpmc", gpmc); in gpmc_setup_irq()
1420 dev_err(gpmc->dev, "failed to request irq %d: %d\n", in gpmc_setup_irq()
1421 gpmc->irq, rc); in gpmc_setup_irq()
1429 static int gpmc_free_irq(struct gpmc_device *gpmc) in gpmc_free_irq() argument
1433 free_irq(gpmc->irq, gpmc); in gpmc_free_irq()
1435 for (hwirq = 0; hwirq < gpmc->nirqs; hwirq++) in gpmc_free_irq()
1799 * @cs: GPMC chip-select to program
1800 * @p: pointer to GPMC settings structure
1802 * Programs non-timing related settings for a GPMC chip-select, such as
1882 { .compatible = "ti,omap2420-gpmc" },
1883 { .compatible = "ti,omap2430-gpmc" },
1884 { .compatible = "ti,omap3430-gpmc" }, /* omap3430 & omap3630 */
1885 { .compatible = "ti,omap4430-gpmc" }, /* omap4430 & omap4460 & omap543x */
1886 { .compatible = "ti,am3352-gpmc" }, /* am335x devices */
1892 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_set_name() local
1894 gpmc->name = name; in gpmc_cs_set_name()
1899 struct gpmc_cs_data *gpmc = &gpmc_cs[cs]; in gpmc_cs_get_name() local
1901 return gpmc->name; in gpmc_cs_get_name()
1924 * Make sure we ignore any device offsets from the GPMC partition in gpmc_cs_remap()
1926 * to the GPMC 16MB minimum granularity. in gpmc_cs_remap()
1948 * gpmc_read_settings_dt - read gpmc settings from device-tree
1949 * @np: pointer to device-tree node for a gpmc child device
1950 * @p: pointer to gpmc settings structure
1952 * Reads the GPMC settings for a GPMC child device from device-tree and
1953 * stores them in the GPMC settings structure passed. The GPMC settings
1961 p->sync_read = of_property_read_bool(np, "gpmc,sync-read"); in gpmc_read_settings_dt()
1962 p->sync_write = of_property_read_bool(np, "gpmc,sync-write"); in gpmc_read_settings_dt()
1963 of_property_read_u32(np, "gpmc,device-width", &p->device_width); in gpmc_read_settings_dt()
1964 of_property_read_u32(np, "gpmc,mux-add-data", &p->mux_add_data); in gpmc_read_settings_dt()
1966 if (!of_property_read_u32(np, "gpmc,burst-length", &p->burst_len)) { in gpmc_read_settings_dt()
1967 p->burst_wrap = of_property_read_bool(np, "gpmc,burst-wrap"); in gpmc_read_settings_dt()
1968 p->burst_read = of_property_read_bool(np, "gpmc,burst-read"); in gpmc_read_settings_dt()
1969 p->burst_write = of_property_read_bool(np, "gpmc,burst-write"); in gpmc_read_settings_dt()
1975 if (!of_property_read_u32(np, "gpmc,wait-pin", &p->wait_pin)) { in gpmc_read_settings_dt()
1977 "gpmc,wait-on-read"); in gpmc_read_settings_dt()
1979 "gpmc,wait-on-write"); in gpmc_read_settings_dt()
1997 of_property_read_u32(np, "gpmc,sync-clk-ps", &gpmc_t->sync_clk); in gpmc_read_timings_dt()
2000 of_property_read_u32(np, "gpmc,cs-on-ns", &gpmc_t->cs_on); in gpmc_read_timings_dt()
2001 of_property_read_u32(np, "gpmc,cs-rd-off-ns", &gpmc_t->cs_rd_off); in gpmc_read_timings_dt()
2002 of_property_read_u32(np, "gpmc,cs-wr-off-ns", &gpmc_t->cs_wr_off); in gpmc_read_timings_dt()
2005 of_property_read_u32(np, "gpmc,adv-on-ns", &gpmc_t->adv_on); in gpmc_read_timings_dt()
2006 of_property_read_u32(np, "gpmc,adv-rd-off-ns", &gpmc_t->adv_rd_off); in gpmc_read_timings_dt()
2007 of_property_read_u32(np, "gpmc,adv-wr-off-ns", &gpmc_t->adv_wr_off); in gpmc_read_timings_dt()
2008 of_property_read_u32(np, "gpmc,adv-aad-mux-on-ns", in gpmc_read_timings_dt()
2010 of_property_read_u32(np, "gpmc,adv-aad-mux-rd-off-ns", in gpmc_read_timings_dt()
2012 of_property_read_u32(np, "gpmc,adv-aad-mux-wr-off-ns", in gpmc_read_timings_dt()
2016 of_property_read_u32(np, "gpmc,we-on-ns", &gpmc_t->we_on); in gpmc_read_timings_dt()
2017 of_property_read_u32(np, "gpmc,we-off-ns", &gpmc_t->we_off); in gpmc_read_timings_dt()
2020 of_property_read_u32(np, "gpmc,oe-on-ns", &gpmc_t->oe_on); in gpmc_read_timings_dt()
2021 of_property_read_u32(np, "gpmc,oe-off-ns", &gpmc_t->oe_off); in gpmc_read_timings_dt()
2022 of_property_read_u32(np, "gpmc,oe-aad-mux-on-ns", in gpmc_read_timings_dt()
2024 of_property_read_u32(np, "gpmc,oe-aad-mux-off-ns", in gpmc_read_timings_dt()
2028 of_property_read_u32(np, "gpmc,page-burst-access-ns", in gpmc_read_timings_dt()
2030 of_property_read_u32(np, "gpmc,access-ns", &gpmc_t->access); in gpmc_read_timings_dt()
2031 of_property_read_u32(np, "gpmc,rd-cycle-ns", &gpmc_t->rd_cycle); in gpmc_read_timings_dt()
2032 of_property_read_u32(np, "gpmc,wr-cycle-ns", &gpmc_t->wr_cycle); in gpmc_read_timings_dt()
2033 of_property_read_u32(np, "gpmc,bus-turnaround-ns", in gpmc_read_timings_dt()
2035 of_property_read_u32(np, "gpmc,cycle2cycle-delay-ns", in gpmc_read_timings_dt()
2037 of_property_read_u32(np, "gpmc,wait-monitoring-ns", in gpmc_read_timings_dt()
2039 of_property_read_u32(np, "gpmc,clk-activation-ns", in gpmc_read_timings_dt()
2043 of_property_read_u32(np, "gpmc,wr-access-ns", &gpmc_t->wr_access); in gpmc_read_timings_dt()
2044 of_property_read_u32(np, "gpmc,wr-data-mux-bus-ns", in gpmc_read_timings_dt()
2051 of_property_read_bool(np, "gpmc,cycle2cycle-diffcsen"); in gpmc_read_timings_dt()
2053 of_property_read_bool(np, "gpmc,cycle2cycle-samecsen"); in gpmc_read_timings_dt()
2054 p->we_extra_delay = of_property_read_bool(np, "gpmc,we-extra-delay"); in gpmc_read_timings_dt()
2055 p->oe_extra_delay = of_property_read_bool(np, "gpmc,oe-extra-delay"); in gpmc_read_timings_dt()
2056 p->adv_extra_delay = of_property_read_bool(np, "gpmc,adv-extra-delay"); in gpmc_read_timings_dt()
2057 p->cs_extra_delay = of_property_read_bool(np, "gpmc,cs-extra-delay"); in gpmc_read_timings_dt()
2059 of_property_read_bool(np, "gpmc,time-para-granularity"); in gpmc_read_timings_dt()
2063 * gpmc_probe_generic_child - configures the gpmc for a child device
2064 * @pdev: pointer to gpmc platform device
2067 * Allocates and configures a GPMC chip-select for a child device.
2081 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_probe_generic_child() local
2106 dev_err(&pdev->dev, "cannot request GPMC CS %d\n", cs); in gpmc_probe_generic_child()
2115 * For some GPMC devices we still need to rely on the bootloader in gpmc_probe_generic_child()
2120 WARN(1, "enable GPMC debug to configure .dts timings for CS%i\n", in gpmc_probe_generic_child()
2123 "please add GPMC bootloader timings to .dts"); in gpmc_probe_generic_child()
2127 /* CS must be disabled while making changes to gpmc configuration */ in gpmc_probe_generic_child()
2132 * location in the gpmc address space. When booting with in gpmc_probe_generic_child()
2140 dev_err(&pdev->dev, "cannot remap GPMC CS %d to %pa\n", in gpmc_probe_generic_child()
2144 "GPMC CS %d start cannot be lesser than 0x%x\n", in gpmc_probe_generic_child()
2148 "GPMC CS %d end cannot be greater than 0x%x\n", in gpmc_probe_generic_child()
2200 "%pOF has no 'gpmc,device-width' property\n", in gpmc_probe_generic_child()
2210 waitpin_desc = gpiochip_request_own_desc(&gpmc->gpio_chip, in gpmc_probe_generic_child()
2229 dev_err(&pdev->dev, "failed to set gpmc timings for: %pOFn\n", in gpmc_probe_generic_child()
2258 dev_err(&pdev->dev, "failed to create gpmc child %pOFn\n", child); in gpmc_probe_generic_child()
2278 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-cs", in gpmc_probe_dt()
2292 ret = of_property_read_u32(pdev->dev.of_node, "gpmc,num-waitpins", in gpmc_probe_dt()
2363 static int gpmc_gpio_init(struct gpmc_device *gpmc) in gpmc_gpio_init() argument
2367 gpmc->gpio_chip.parent = gpmc->dev; in gpmc_gpio_init()
2368 gpmc->gpio_chip.owner = THIS_MODULE; in gpmc_gpio_init()
2369 gpmc->gpio_chip.label = DEVICE_NAME; in gpmc_gpio_init()
2370 gpmc->gpio_chip.ngpio = gpmc_nr_waitpins; in gpmc_gpio_init()
2371 gpmc->gpio_chip.get_direction = gpmc_gpio_get_direction; in gpmc_gpio_init()
2372 gpmc->gpio_chip.direction_input = gpmc_gpio_direction_input; in gpmc_gpio_init()
2373 gpmc->gpio_chip.direction_output = gpmc_gpio_direction_output; in gpmc_gpio_init()
2374 gpmc->gpio_chip.set = gpmc_gpio_set; in gpmc_gpio_init()
2375 gpmc->gpio_chip.get = gpmc_gpio_get; in gpmc_gpio_init()
2376 gpmc->gpio_chip.base = -1; in gpmc_gpio_init()
2378 ret = devm_gpiochip_add_data(gpmc->dev, &gpmc->gpio_chip, NULL); in gpmc_gpio_init()
2380 dev_err(gpmc->dev, "could not register gpio chip: %d\n", ret); in gpmc_gpio_init()
2392 struct gpmc_device *gpmc; in gpmc_probe() local
2394 gpmc = devm_kzalloc(&pdev->dev, sizeof(*gpmc), GFP_KERNEL); in gpmc_probe()
2395 if (!gpmc) in gpmc_probe()
2398 gpmc->dev = &pdev->dev; in gpmc_probe()
2399 platform_set_drvdata(pdev, gpmc); in gpmc_probe()
2415 gpmc->irq = res->start; in gpmc_probe()
2419 dev_err(&pdev->dev, "Failed to get GPMC fck\n"); in gpmc_probe()
2424 dev_err(&pdev->dev, "Invalid GPMC fck clock rate\n"); in gpmc_probe()
2449 * GPMC IP revisions: in gpmc_probe()
2458 dev_info(gpmc->dev, "GPMC revision %d.%d\n", GPMC_REVISION_MAJOR(l), in gpmc_probe()
2462 rc = gpmc_gpio_init(gpmc); in gpmc_probe()
2466 gpmc->nirqs = GPMC_NR_NAND_IRQS + gpmc_nr_waitpins; in gpmc_probe()
2467 rc = gpmc_setup_irq(gpmc); in gpmc_probe()
2469 dev_err(gpmc->dev, "gpmc_setup_irq failed\n"); in gpmc_probe()
2487 struct gpmc_device *gpmc = platform_get_drvdata(pdev); in gpmc_remove() local
2489 gpmc_free_irq(gpmc); in gpmc_remove()