Lines Matching full:sdma
3 // drivers/dma/imx-sdma.c
46 /* SDMA registers */
104 * Error bit set in the CCB status field by the SDMA,
145 * 28 Lower WML Event(LWE) SDMA events reg to check for
149 * 29 Higher WML Event(HWE) SDMA events reg to check for
193 * struct sdma_script_start_addrs - SDMA script start pointers
196 * address space of the SDMA engine.
275 * @unused: padding. The SDMA engine expects an array of 128 byte
285 * struct sdma_state_registers - SDMA context for a channel
314 * struct sdma_context_data - sdma context specific to a channel
398 * struct sdma_channel - housekeeping for a SDMA channel
401 * @desc: sdma description including vd and other special member
402 * @sdma: pointer to the SDMA engine for this channel
404 * @direction: transfer type. Needed for setting SDMA script
406 * @peripheral_type: Peripheral type. Needed for setting SDMA script
425 * @data: specific sdma interface structure
440 struct sdma_engine *sdma; member
481 * @magic: "SDMA"
487 * @ram_code_start: offset of SDMA ram image in this firmware image
488 * @ram_code_size: size of SDMA ram image
489 * @script_addrs: Stores the start address of the SDMA scripts
490 * (in SDMA memory space)
508 * ecspi ERR009165 fixed should be done in sdma script
535 /* clock ratio for AHB:SDMA core. 1:1 is 1, 2:1 is 0*/
667 { .compatible = "fsl,imx6q-sdma", .data = &sdma_imx6q, },
668 { .compatible = "fsl,imx53-sdma", .data = &sdma_imx53, },
669 { .compatible = "fsl,imx51-sdma", .data = &sdma_imx51, },
670 { .compatible = "fsl,imx35-sdma", .data = &sdma_imx35, },
671 { .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },
672 { .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },
673 { .compatible = "fsl,imx7d-sdma", .data = &sdma_imx7d, },
674 { .compatible = "fsl,imx6ul-sdma", .data = &sdma_imx6ul, },
675 { .compatible = "fsl,imx8mq-sdma", .data = &sdma_imx8mq, },
685 static inline u32 chnenbl_ofs(struct sdma_engine *sdma, unsigned int event) in chnenbl_ofs() argument
687 u32 chnenbl0 = sdma->drvdata->chnenbl0; in chnenbl_ofs()
694 struct sdma_engine *sdma = sdmac->sdma; in sdma_config_ownership() local
701 evt = readl_relaxed(sdma->regs + SDMA_H_EVTOVR); in sdma_config_ownership()
702 mcu = readl_relaxed(sdma->regs + SDMA_H_HOSTOVR); in sdma_config_ownership()
703 dsp = readl_relaxed(sdma->regs + SDMA_H_DSPOVR); in sdma_config_ownership()
720 writel_relaxed(evt, sdma->regs + SDMA_H_EVTOVR); in sdma_config_ownership()
721 writel_relaxed(mcu, sdma->regs + SDMA_H_HOSTOVR); in sdma_config_ownership()
722 writel_relaxed(dsp, sdma->regs + SDMA_H_DSPOVR); in sdma_config_ownership()
727 static int is_sdma_channel_enabled(struct sdma_engine *sdma, int channel) in is_sdma_channel_enabled() argument
729 return !!(readl(sdma->regs + SDMA_H_STATSTOP) & BIT(channel)); in is_sdma_channel_enabled()
732 static void sdma_enable_channel(struct sdma_engine *sdma, int channel) in sdma_enable_channel() argument
734 writel(BIT(channel), sdma->regs + SDMA_H_START); in sdma_enable_channel()
740 static int sdma_run_channel0(struct sdma_engine *sdma) in sdma_run_channel0() argument
745 sdma_enable_channel(sdma, 0); in sdma_run_channel0()
747 ret = readl_relaxed_poll_timeout_atomic(sdma->regs + SDMA_H_STATSTOP, in sdma_run_channel0()
750 dev_err(sdma->dev, "Timeout waiting for CH0 ready\n"); in sdma_run_channel0()
753 reg = readl(sdma->regs + SDMA_H_CONFIG); in sdma_run_channel0()
756 writel_relaxed(reg, sdma->regs + SDMA_H_CONFIG); in sdma_run_channel0()
762 static int sdma_load_script(struct sdma_engine *sdma, void *buf, int size, in sdma_load_script() argument
765 struct sdma_buffer_descriptor *bd0 = sdma->bd0; in sdma_load_script()
771 buf_virt = dma_alloc_coherent(sdma->dev, size, &buf_phys, GFP_KERNEL); in sdma_load_script()
775 spin_lock_irqsave(&sdma->channel_0_lock, flags); in sdma_load_script()
785 ret = sdma_run_channel0(sdma); in sdma_load_script()
787 spin_unlock_irqrestore(&sdma->channel_0_lock, flags); in sdma_load_script()
789 dma_free_coherent(sdma->dev, size, buf_virt, buf_phys); in sdma_load_script()
796 struct sdma_engine *sdma = sdmac->sdma; in sdma_event_enable() local
799 u32 chnenbl = chnenbl_ofs(sdma, event); in sdma_event_enable()
801 val = readl_relaxed(sdma->regs + chnenbl); in sdma_event_enable()
803 writel_relaxed(val, sdma->regs + chnenbl); in sdma_event_enable()
807 val = readl_relaxed(sdma->regs + SDMA_DONE0_CONFIG); in sdma_event_enable()
810 writel_relaxed(val, sdma->regs + SDMA_DONE0_CONFIG); in sdma_event_enable()
816 struct sdma_engine *sdma = sdmac->sdma; in sdma_event_disable() local
818 u32 chnenbl = chnenbl_ofs(sdma, event); in sdma_event_disable()
821 val = readl_relaxed(sdma->regs + chnenbl); in sdma_event_disable()
823 writel_relaxed(val, sdma->regs + chnenbl); in sdma_event_disable()
835 struct sdma_engine *sdma = sdmac->sdma; in sdma_start_desc() local
846 sdma->channel_control[channel].base_bd_ptr = desc->bd_phys; in sdma_start_desc()
847 sdma->channel_control[channel].current_bd_ptr = desc->bd_phys; in sdma_start_desc()
848 sdma_enable_channel(sdma, sdmac->channel); in sdma_start_desc()
888 * SDMA transaction status by the time the client tasklet is in sdma_update_channel_loop()
895 /* Assign buffer ownership to SDMA */ in sdma_update_channel_loop()
903 * SDMA stops cyclic channel when DMA request triggers a channel and no SDMA in sdma_update_channel_loop()
906 if (sdmac->desc && !is_sdma_channel_enabled(sdmac->sdma, sdmac->channel)) { in sdma_update_channel_loop()
907 dev_warn(sdmac->sdma->dev, "restart cyclic channel %d\n", sdmac->channel); in sdma_update_channel_loop()
908 sdma_enable_channel(sdmac->sdma, sdmac->channel); in sdma_update_channel_loop()
939 struct sdma_engine *sdma = dev_id; in sdma_int_handler() local
942 stat = readl_relaxed(sdma->regs + SDMA_H_INTR); in sdma_int_handler()
943 writel_relaxed(stat, sdma->regs + SDMA_H_INTR); in sdma_int_handler()
949 struct sdma_channel *sdmac = &sdma->channel[channel]; in sdma_int_handler()
975 * sets the pc of SDMA script according to the peripheral type
980 struct sdma_engine *sdma = sdmac->sdma; in sdma_get_pc() local
996 emi_2_emi = sdma->script_addrs->ap_2_ap_addr; in sdma_get_pc()
999 emi_2_per = sdma->script_addrs->bp_2_ap_addr; in sdma_get_pc()
1000 per_2_emi = sdma->script_addrs->ap_2_bp_addr; in sdma_get_pc()
1003 per_2_emi = sdma->script_addrs->firi_2_mcu_addr; in sdma_get_pc()
1004 emi_2_per = sdma->script_addrs->mcu_2_firi_addr; in sdma_get_pc()
1007 per_2_emi = sdma->script_addrs->uart_2_mcu_addr; in sdma_get_pc()
1008 emi_2_per = sdma->script_addrs->mcu_2_app_addr; in sdma_get_pc()
1011 per_2_emi = sdma->script_addrs->uartsh_2_mcu_addr; in sdma_get_pc()
1012 emi_2_per = sdma->script_addrs->mcu_2_shp_addr; in sdma_get_pc()
1015 per_2_emi = sdma->script_addrs->ata_2_mcu_addr; in sdma_get_pc()
1016 emi_2_per = sdma->script_addrs->mcu_2_ata_addr; in sdma_get_pc()
1019 per_2_emi = sdma->script_addrs->app_2_mcu_addr; in sdma_get_pc()
1022 if (sdmac->sdma->drvdata->ecspi_fixed) { in sdma_get_pc()
1023 emi_2_per = sdma->script_addrs->mcu_2_app_addr; in sdma_get_pc()
1025 emi_2_per = sdma->script_addrs->mcu_2_ecspi_addr; in sdma_get_pc()
1033 per_2_emi = sdma->script_addrs->app_2_mcu_addr; in sdma_get_pc()
1034 emi_2_per = sdma->script_addrs->mcu_2_app_addr; in sdma_get_pc()
1037 per_2_emi = sdma->script_addrs->ssish_2_mcu_addr; in sdma_get_pc()
1038 emi_2_per = sdma->script_addrs->mcu_2_ssish_addr; in sdma_get_pc()
1047 per_2_emi = sdma->script_addrs->shp_2_mcu_addr; in sdma_get_pc()
1048 emi_2_per = sdma->script_addrs->mcu_2_shp_addr; in sdma_get_pc()
1051 per_2_emi = sdma->script_addrs->asrc_2_mcu_addr; in sdma_get_pc()
1052 emi_2_per = sdma->script_addrs->asrc_2_mcu_addr; in sdma_get_pc()
1053 per_2_per = sdma->script_addrs->per_2_per_addr; in sdma_get_pc()
1057 per_2_emi = sdma->script_addrs->shp_2_mcu_addr; in sdma_get_pc()
1058 emi_2_per = sdma->script_addrs->mcu_2_shp_addr; in sdma_get_pc()
1059 per_2_per = sdma->script_addrs->per_2_per_addr; in sdma_get_pc()
1062 per_2_emi = sdma->script_addrs->mshc_2_mcu_addr; in sdma_get_pc()
1063 emi_2_per = sdma->script_addrs->mcu_2_mshc_addr; in sdma_get_pc()
1066 per_2_emi = sdma->script_addrs->dptc_dvfs_addr; in sdma_get_pc()
1069 per_2_emi = sdma->script_addrs->spdif_2_mcu_addr; in sdma_get_pc()
1070 emi_2_per = sdma->script_addrs->mcu_2_spdif_addr; in sdma_get_pc()
1073 emi_2_per = sdma->script_addrs->ext_mem_2_ipu_addr; in sdma_get_pc()
1076 per_2_emi = sdma->script_addrs->sai_2_mcu_addr; in sdma_get_pc()
1077 emi_2_per = sdma->script_addrs->mcu_2_sai_addr; in sdma_get_pc()
1080 emi_2_per = sdma->script_addrs->hdmi_dma_addr; in sdma_get_pc()
1084 dev_err(sdma->dev, "Unsupported transfer type %d\n", in sdma_get_pc()
1099 struct sdma_engine *sdma = sdmac->sdma; in sdma_load_context() local
1102 struct sdma_context_data *context = sdma->context; in sdma_load_context()
1103 struct sdma_buffer_descriptor *bd0 = sdma->bd0; in sdma_load_context()
1119 dev_dbg(sdma->dev, "load_address = %d\n", load_address); in sdma_load_context()
1120 dev_dbg(sdma->dev, "wml = 0x%08x\n", (u32)sdmac->watermark_level); in sdma_load_context()
1121 dev_dbg(sdma->dev, "shp_addr = 0x%08x\n", sdmac->shp_addr); in sdma_load_context()
1122 dev_dbg(sdma->dev, "per_addr = 0x%08x\n", sdmac->per_addr); in sdma_load_context()
1123 dev_dbg(sdma->dev, "event_mask0 = 0x%08x\n", (u32)sdmac->event_mask[0]); in sdma_load_context()
1124 dev_dbg(sdma->dev, "event_mask1 = 0x%08x\n", (u32)sdmac->event_mask[1]); in sdma_load_context()
1126 spin_lock_irqsave(&sdma->channel_0_lock, flags); in sdma_load_context()
1148 bd0->buffer_addr = sdma->context_phys; in sdma_load_context()
1150 ret = sdma_run_channel0(sdma); in sdma_load_context()
1152 spin_unlock_irqrestore(&sdma->channel_0_lock, flags); in sdma_load_context()
1165 struct sdma_engine *sdma = sdmac->sdma; in sdma_disable_channel() local
1168 writel_relaxed(BIT(channel), sdma->regs + SDMA_H_STATSTOP); in sdma_disable_channel()
1178 * According to NXP R&D team a delay of one BD SDMA cost time in sdma_channel_terminate_work()
1180 * bit, to ensure SDMA core has really been stopped after SDMA in sdma_channel_terminate_work()
1226 struct sdma_engine *sdma = sdmac->sdma; in sdma_set_watermarklevel_for_p2p() local
1253 if (sdmac->per_address2 >= sdma->spba_start_addr && in sdma_set_watermarklevel_for_p2p()
1254 sdmac->per_address2 <= sdma->spba_end_addr) in sdma_set_watermarklevel_for_p2p()
1257 if (sdmac->per_address >= sdma->spba_start_addr && in sdma_set_watermarklevel_for_p2p()
1258 sdmac->per_address <= sdma->spba_end_addr) in sdma_set_watermarklevel_for_p2p()
1348 struct sdma_engine *sdma = sdmac->sdma; in sdma_set_channel_priority() local
1356 writel_relaxed(priority, sdma->regs + SDMA_CHNPRI_0 + 4 * channel); in sdma_set_channel_priority()
1361 static int sdma_request_channel0(struct sdma_engine *sdma) in sdma_request_channel0() argument
1365 sdma->bd0 = dma_alloc_coherent(sdma->dev, PAGE_SIZE, &sdma->bd0_phys, in sdma_request_channel0()
1367 if (!sdma->bd0) { in sdma_request_channel0()
1372 sdma->channel_control[0].base_bd_ptr = sdma->bd0_phys; in sdma_request_channel0()
1373 sdma->channel_control[0].current_bd_ptr = sdma->bd0_phys; in sdma_request_channel0()
1375 sdma_set_channel_priority(&sdma->channel[0], MXC_SDMA_DEFAULT_PRIORITY); in sdma_request_channel0()
1388 desc->bd = dma_alloc_coherent(desc->sdmac->sdma->dev, bd_size, in sdma_alloc_bd()
1402 dma_free_coherent(desc->sdmac->sdma->dev, bd_size, desc->bd, in sdma_free_bd()
1431 dev_dbg(sdmac->sdma->dev, "MEMCPY in case?\n"); in sdma_alloc_chan_resources()
1460 ret = clk_enable(sdmac->sdma->clk_ipg); in sdma_alloc_chan_resources()
1463 ret = clk_enable(sdmac->sdma->clk_ahb); in sdma_alloc_chan_resources()
1474 clk_disable(sdmac->sdma->clk_ahb); in sdma_alloc_chan_resources()
1476 clk_disable(sdmac->sdma->clk_ipg); in sdma_alloc_chan_resources()
1483 struct sdma_engine *sdma = sdmac->sdma; in sdma_free_chan_resources() local
1498 clk_disable(sdma->clk_ipg); in sdma_free_chan_resources()
1499 clk_disable(sdma->clk_ahb); in sdma_free_chan_resources()
1507 if (!sdmac->sdma->fw_loaded && sdmac->is_ram_script) { in sdma_transfer_init()
1508 dev_warn_once(sdmac->sdma->dev, "sdma firmware not ready!\n"); in sdma_transfer_init()
1552 struct sdma_engine *sdma = sdmac->sdma; in sdma_prep_memcpy() local
1562 dev_dbg(sdma->dev, "memcpy: %pad->%pad, len=%zu, channel=%d.\n", in sdma_prep_memcpy()
1592 dev_dbg(sdma->dev, "entry %d: count: %zd dma: 0x%x %s%s\n", in sdma_prep_memcpy()
1609 struct sdma_engine *sdma = sdmac->sdma; in sdma_prep_slave_sg() local
1621 dev_dbg(sdma->dev, "setting up %d entries for channel %d.\n", in sdma_prep_slave_sg()
1633 dev_err(sdma->dev, "SDMA channel %d: maximum bytes for sg entry exceeded: %d > %d\n", in sdma_prep_slave_sg()
1670 dev_dbg(sdma->dev, "entry %d: count: %d dma: %#llx %s%s\n", in sdma_prep_slave_sg()
1693 struct sdma_engine *sdma = sdmac->sdma; in sdma_prep_dma_cyclic() local
1699 dev_dbg(sdma->dev, "%s channel: %d\n", __func__, channel); in sdma_prep_dma_cyclic()
1715 dev_err(sdma->dev, "SDMA channel %d: maximum period size exceeded: %zu > %d\n", in sdma_prep_dma_cyclic()
1742 dev_dbg(sdma->dev, "entry %d: count: %zu dma: %#llx %s%s\n", in sdma_prep_dma_cyclic()
1801 struct sdma_engine *sdma = sdmac->sdma; in sdma_config() local
1808 dev_err(sdma->dev, "Invalid peripheral size %zu, expected %zu\n", in sdma_config()
1822 if (sdmac->event_id0 >= sdmac->sdma->drvdata->num_events) in sdma_config()
1827 if (sdmac->event_id1 >= sdmac->sdma->drvdata->num_events) in sdma_config()
1892 static void sdma_add_scripts(struct sdma_engine *sdma, in sdma_add_scripts() argument
1896 s32 *saddr_arr = (u32 *)sdma->script_addrs; in sdma_add_scripts()
1900 if (!sdma->script_number) in sdma_add_scripts()
1901 sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; in sdma_add_scripts()
1903 if (sdma->script_number > sizeof(struct sdma_script_start_addrs) in sdma_add_scripts()
1905 dev_err(sdma->dev, in sdma_add_scripts()
1906 "SDMA script number %d not match with firmware.\n", in sdma_add_scripts()
1907 sdma->script_number); in sdma_add_scripts()
1911 for (i = 0; i < sdma->script_number; i++) in sdma_add_scripts()
1918 * script, both uart ram/rom scripts are present in newer sdma in sdma_add_scripts()
1921 if (sdma->script_number >= SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3) { in sdma_add_scripts()
1923 sdma->script_addrs->uart_2_mcu_addr = addr->uart_2_mcu_rom_addr; in sdma_add_scripts()
1925 sdma->script_addrs->uartsh_2_mcu_addr = addr->uartsh_2_mcu_rom_addr; in sdma_add_scripts()
1931 struct sdma_engine *sdma = context; in sdma_load_firmware() local
1937 dev_info(sdma->dev, "external firmware not found, using ROM firmware\n"); in sdma_load_firmware()
1953 sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; in sdma_load_firmware()
1956 sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2; in sdma_load_firmware()
1959 sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3; in sdma_load_firmware()
1962 sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V4; in sdma_load_firmware()
1965 dev_err(sdma->dev, "unknown firmware version\n"); in sdma_load_firmware()
1972 clk_enable(sdma->clk_ipg); in sdma_load_firmware()
1973 clk_enable(sdma->clk_ahb); in sdma_load_firmware()
1974 /* download the RAM image for SDMA */ in sdma_load_firmware()
1975 sdma_load_script(sdma, ram_code, in sdma_load_firmware()
1978 clk_disable(sdma->clk_ipg); in sdma_load_firmware()
1979 clk_disable(sdma->clk_ahb); in sdma_load_firmware()
1981 sdma_add_scripts(sdma, addr); in sdma_load_firmware()
1983 sdma->fw_loaded = true; in sdma_load_firmware()
1985 dev_info(sdma->dev, "loaded firmware %d.%d\n", in sdma_load_firmware()
1995 static int sdma_event_remap(struct sdma_engine *sdma) in sdma_event_remap() argument
1997 struct device_node *np = sdma->dev->of_node; in sdma_event_remap()
2001 char propname[] = "fsl,sdma-event-remap"; in sdma_event_remap()
2011 dev_dbg(sdma->dev, "no event needs to be remapped\n"); in sdma_event_remap()
2014 dev_err(sdma->dev, "the property %s must modulo %d\n", in sdma_event_remap()
2022 dev_err(sdma->dev, "failed to get gpr regmap\n"); in sdma_event_remap()
2030 dev_err(sdma->dev, "failed to read property %s index %d\n", in sdma_event_remap()
2037 dev_err(sdma->dev, "failed to read property %s index %d\n", in sdma_event_remap()
2044 dev_err(sdma->dev, "failed to read property %s index %d\n", in sdma_event_remap()
2059 static int sdma_get_firmware(struct sdma_engine *sdma, in sdma_get_firmware() argument
2065 FW_ACTION_UEVENT, fw_name, sdma->dev, in sdma_get_firmware()
2066 GFP_KERNEL, sdma, sdma_load_firmware); in sdma_get_firmware()
2071 static int sdma_init(struct sdma_engine *sdma) in sdma_init() argument
2076 ret = clk_enable(sdma->clk_ipg); in sdma_init()
2079 ret = clk_enable(sdma->clk_ahb); in sdma_init()
2083 if (sdma->drvdata->check_ratio && in sdma_init()
2084 (clk_get_rate(sdma->clk_ahb) == clk_get_rate(sdma->clk_ipg))) in sdma_init()
2085 sdma->clk_ratio = 1; in sdma_init()
2087 /* Be sure SDMA has not started yet */ in sdma_init()
2088 writel_relaxed(0, sdma->regs + SDMA_H_C0PTR); in sdma_init()
2090 sdma->channel_control = dma_alloc_coherent(sdma->dev, in sdma_init()
2095 if (!sdma->channel_control) { in sdma_init()
2100 sdma->context = (void *)sdma->channel_control + in sdma_init()
2102 sdma->context_phys = ccb_phys + in sdma_init()
2106 for (i = 0; i < sdma->drvdata->num_events; i++) in sdma_init()
2107 writel_relaxed(0, sdma->regs + chnenbl_ofs(sdma, i)); in sdma_init()
2111 writel_relaxed(0, sdma->regs + SDMA_CHNPRI_0 + i * 4); in sdma_init()
2113 ret = sdma_request_channel0(sdma); in sdma_init()
2117 sdma_config_ownership(&sdma->channel[0], false, true, false); in sdma_init()
2120 writel_relaxed(0x4050, sdma->regs + SDMA_CHN0ADDR); in sdma_init()
2123 if (sdma->clk_ratio) in sdma_init()
2124 writel_relaxed(SDMA_H_CONFIG_ACR, sdma->regs + SDMA_H_CONFIG); in sdma_init()
2126 writel_relaxed(0, sdma->regs + SDMA_H_CONFIG); in sdma_init()
2128 writel_relaxed(ccb_phys, sdma->regs + SDMA_H_C0PTR); in sdma_init()
2131 sdma_set_channel_priority(&sdma->channel[0], 7); in sdma_init()
2133 clk_disable(sdma->clk_ipg); in sdma_init()
2134 clk_disable(sdma->clk_ahb); in sdma_init()
2139 clk_disable(sdma->clk_ahb); in sdma_init()
2141 clk_disable(sdma->clk_ipg); in sdma_init()
2142 dev_err(sdma->dev, "initialisation failed with %d\n", ret); in sdma_init()
2163 struct sdma_engine *sdma = ofdma->of_dma_data; in sdma_xlate() local
2164 dma_cap_mask_t mask = sdma->dma_device.cap_mask; in sdma_xlate()
2195 struct sdma_engine *sdma; in sdma_probe() local
2202 sdma = devm_kzalloc(&pdev->dev, sizeof(*sdma), GFP_KERNEL); in sdma_probe()
2203 if (!sdma) in sdma_probe()
2206 spin_lock_init(&sdma->channel_0_lock); in sdma_probe()
2208 sdma->dev = &pdev->dev; in sdma_probe()
2209 sdma->drvdata = of_device_get_match_data(sdma->dev); in sdma_probe()
2215 sdma->regs = devm_platform_ioremap_resource(pdev, 0); in sdma_probe()
2216 if (IS_ERR(sdma->regs)) in sdma_probe()
2217 return PTR_ERR(sdma->regs); in sdma_probe()
2219 sdma->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); in sdma_probe()
2220 if (IS_ERR(sdma->clk_ipg)) in sdma_probe()
2221 return PTR_ERR(sdma->clk_ipg); in sdma_probe()
2223 sdma->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); in sdma_probe()
2224 if (IS_ERR(sdma->clk_ahb)) in sdma_probe()
2225 return PTR_ERR(sdma->clk_ahb); in sdma_probe()
2227 ret = clk_prepare(sdma->clk_ipg); in sdma_probe()
2231 ret = clk_prepare(sdma->clk_ahb); in sdma_probe()
2236 dev_name(&pdev->dev), sdma); in sdma_probe()
2240 sdma->irq = irq; in sdma_probe()
2242 sdma->script_addrs = kzalloc(sizeof(*sdma->script_addrs), GFP_KERNEL); in sdma_probe()
2243 if (!sdma->script_addrs) { in sdma_probe()
2249 saddr_arr = (s32 *)sdma->script_addrs; in sdma_probe()
2250 for (i = 0; i < sizeof(*sdma->script_addrs) / sizeof(s32); i++) in sdma_probe()
2253 dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask); in sdma_probe()
2254 dma_cap_set(DMA_CYCLIC, sdma->dma_device.cap_mask); in sdma_probe()
2255 dma_cap_set(DMA_MEMCPY, sdma->dma_device.cap_mask); in sdma_probe()
2256 dma_cap_set(DMA_PRIVATE, sdma->dma_device.cap_mask); in sdma_probe()
2258 INIT_LIST_HEAD(&sdma->dma_device.channels); in sdma_probe()
2261 struct sdma_channel *sdmac = &sdma->channel[i]; in sdma_probe()
2263 sdmac->sdma = sdma; in sdma_probe()
2272 * because we need it internally in the SDMA driver. This also means in sdma_probe()
2273 * that channel 0 in dmaengine counting matches sdma channel 1. in sdma_probe()
2276 vchan_init(&sdmac->vc, &sdma->dma_device); in sdma_probe()
2279 ret = sdma_init(sdma); in sdma_probe()
2283 ret = sdma_event_remap(sdma); in sdma_probe()
2287 if (sdma->drvdata->script_addrs) in sdma_probe()
2288 sdma_add_scripts(sdma, sdma->drvdata->script_addrs); in sdma_probe()
2290 sdma->dma_device.dev = &pdev->dev; in sdma_probe()
2292 sdma->dma_device.device_alloc_chan_resources = sdma_alloc_chan_resources; in sdma_probe()
2293 sdma->dma_device.device_free_chan_resources = sdma_free_chan_resources; in sdma_probe()
2294 sdma->dma_device.device_tx_status = sdma_tx_status; in sdma_probe()
2295 sdma->dma_device.device_prep_slave_sg = sdma_prep_slave_sg; in sdma_probe()
2296 sdma->dma_device.device_prep_dma_cyclic = sdma_prep_dma_cyclic; in sdma_probe()
2297 sdma->dma_device.device_config = sdma_config; in sdma_probe()
2298 sdma->dma_device.device_terminate_all = sdma_terminate_all; in sdma_probe()
2299 sdma->dma_device.device_synchronize = sdma_channel_synchronize; in sdma_probe()
2300 sdma->dma_device.src_addr_widths = SDMA_DMA_BUSWIDTHS; in sdma_probe()
2301 sdma->dma_device.dst_addr_widths = SDMA_DMA_BUSWIDTHS; in sdma_probe()
2302 sdma->dma_device.directions = SDMA_DMA_DIRECTIONS; in sdma_probe()
2303 sdma->dma_device.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT; in sdma_probe()
2304 sdma->dma_device.device_prep_dma_memcpy = sdma_prep_memcpy; in sdma_probe()
2305 sdma->dma_device.device_issue_pending = sdma_issue_pending; in sdma_probe()
2306 sdma->dma_device.copy_align = 2; in sdma_probe()
2307 dma_set_max_seg_size(sdma->dma_device.dev, SDMA_BD_MAX_CNT); in sdma_probe()
2309 platform_set_drvdata(pdev, sdma); in sdma_probe()
2311 ret = dma_async_device_register(&sdma->dma_device); in sdma_probe()
2318 ret = of_dma_controller_register(np, sdma_xlate, sdma); in sdma_probe()
2327 sdma->spba_start_addr = spba_res.start; in sdma_probe()
2328 sdma->spba_end_addr = spba_res.end; in sdma_probe()
2338 ret = of_property_read_string(np, "fsl,sdma-ram-script-name", in sdma_probe()
2343 ret = sdma_get_firmware(sdma, fw_name); in sdma_probe()
2351 dma_async_device_unregister(&sdma->dma_device); in sdma_probe()
2353 kfree(sdma->script_addrs); in sdma_probe()
2355 clk_unprepare(sdma->clk_ahb); in sdma_probe()
2357 clk_unprepare(sdma->clk_ipg); in sdma_probe()
2363 struct sdma_engine *sdma = platform_get_drvdata(pdev); in sdma_remove() local
2366 devm_free_irq(&pdev->dev, sdma->irq, sdma); in sdma_remove()
2367 dma_async_device_unregister(&sdma->dma_device); in sdma_remove()
2368 kfree(sdma->script_addrs); in sdma_remove()
2369 clk_unprepare(sdma->clk_ahb); in sdma_remove()
2370 clk_unprepare(sdma->clk_ipg); in sdma_remove()
2373 struct sdma_channel *sdmac = &sdma->channel[i]; in sdma_remove()
2385 .name = "imx-sdma",
2395 MODULE_DESCRIPTION("i.MX SDMA driver");
2397 MODULE_FIRMWARE("imx/sdma/sdma-imx6q.bin");
2400 MODULE_FIRMWARE("imx/sdma/sdma-imx7d.bin");