| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Driver for the NXP ISP1760 chip |
| * |
| * Copyright 2021 Linaro, Rui Miguel Silva |
| * Copyright 2014 Laurent Pinchart |
| * Copyright 2007 Sebastian Siewior |
| * |
| * Contacts: |
| * Sebastian Siewior <bigeasy@linutronix.de> |
| * Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| * Rui Miguel Silva <rui.silva@linaro.org> |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/regmap.h> |
| #include <linux/slab.h> |
| #include <linux/usb.h> |
| |
| #include "isp1760-core.h" |
| #include "isp1760-hcd.h" |
| #include "isp1760-regs.h" |
| #include "isp1760-udc.h" |
| |
| static int isp1760_init_core(struct isp1760_device *isp) |
| { |
| struct isp1760_hcd *hcd = &isp->hcd; |
| struct isp1760_udc *udc = &isp->udc; |
| u32 otg_ctrl; |
| |
| /* Low-level chip reset */ |
| if (isp->rst_gpio) { |
| gpiod_set_value_cansleep(isp->rst_gpio, 1); |
| msleep(50); |
| gpiod_set_value_cansleep(isp->rst_gpio, 0); |
| } |
| |
| /* |
| * Reset the host controller, including the CPU interface |
| * configuration. |
| */ |
| isp1760_field_set(hcd->fields, SW_RESET_RESET_ALL); |
| msleep(100); |
| |
| /* Setup HW Mode Control: This assumes a level active-low interrupt */ |
| if ((isp->devflags & ISP1760_FLAG_ANALOG_OC) && hcd->is_isp1763) { |
| dev_err(isp->dev, "isp1763 analog overcurrent not available\n"); |
| return -EINVAL; |
| } |
| |
| if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_16) |
| isp1760_field_clear(hcd->fields, HW_DATA_BUS_WIDTH); |
| if (isp->devflags & ISP1760_FLAG_BUS_WIDTH_8) |
| isp1760_field_set(hcd->fields, HW_DATA_BUS_WIDTH); |
| if (isp->devflags & ISP1760_FLAG_ANALOG_OC) |
| isp1760_field_set(hcd->fields, HW_ANA_DIGI_OC); |
| if (isp->devflags & ISP1760_FLAG_DACK_POL_HIGH) |
| isp1760_field_set(hcd->fields, HW_DACK_POL_HIGH); |
| if (isp->devflags & ISP1760_FLAG_DREQ_POL_HIGH) |
| isp1760_field_set(hcd->fields, HW_DREQ_POL_HIGH); |
| if (isp->devflags & ISP1760_FLAG_INTR_POL_HIGH) |
| isp1760_field_set(hcd->fields, HW_INTR_HIGH_ACT); |
| if (isp->devflags & ISP1760_FLAG_INTR_EDGE_TRIG) |
| isp1760_field_set(hcd->fields, HW_INTR_EDGE_TRIG); |
| |
| /* |
| * The ISP1761 has a dedicated DC IRQ line but supports sharing the HC |
| * IRQ line for both the host and device controllers. Hardcode IRQ |
| * sharing for now and disable the DC interrupts globally to avoid |
| * spurious interrupts during HCD registration. |
| */ |
| if (isp->devflags & ISP1760_FLAG_ISP1761) { |
| isp1760_reg_write(udc->regs, ISP176x_DC_MODE, 0); |
| isp1760_field_set(hcd->fields, HW_COMN_IRQ); |
| } |
| |
| /* |
| * PORT 1 Control register of the ISP1760 is the OTG control register |
| * on ISP1761. |
| * |
| * TODO: Really support OTG. For now we configure port 1 in device mode |
| */ |
| if (isp->devflags & ISP1760_FLAG_ISP1761) { |
| if (isp->devflags & ISP1760_FLAG_PERIPHERAL_EN) { |
| otg_ctrl = (ISP176x_HW_DM_PULLDOWN_CLEAR | |
| ISP176x_HW_DP_PULLDOWN_CLEAR | |
| ISP176x_HW_OTG_DISABLE); |
| } else { |
| otg_ctrl = (ISP176x_HW_SW_SEL_HC_DC_CLEAR | |
| ISP176x_HW_VBUS_DRV | |
| ISP176x_HW_SEL_CP_EXT); |
| } |
| isp1760_reg_write(hcd->regs, ISP176x_HC_OTG_CTRL, otg_ctrl); |
| } |
| |
| dev_info(isp->dev, "%s bus width: %u, oc: %s\n", |
| hcd->is_isp1763 ? "isp1763" : "isp1760", |
| isp->devflags & ISP1760_FLAG_BUS_WIDTH_8 ? 8 : |
| isp->devflags & ISP1760_FLAG_BUS_WIDTH_16 ? 16 : 32, |
| hcd->is_isp1763 ? "not available" : |
| isp->devflags & ISP1760_FLAG_ANALOG_OC ? "analog" : "digital"); |
| |
| return 0; |
| } |
| |
| void isp1760_set_pullup(struct isp1760_device *isp, bool enable) |
| { |
| struct isp1760_udc *udc = &isp->udc; |
| |
| if (enable) |
| isp1760_field_set(udc->fields, HW_DP_PULLUP); |
| else |
| isp1760_field_set(udc->fields, HW_DP_PULLUP_CLEAR); |
| } |
| |
| /* |
| * ISP1760/61: |
| * |
| * 60kb divided in: |
| * - 32 blocks @ 256 bytes |
| * - 20 blocks @ 1024 bytes |
| * - 4 blocks @ 8192 bytes |
| */ |
| static const struct isp1760_memory_layout isp176x_memory_conf = { |
| .blocks[0] = 32, |
| .blocks_size[0] = 256, |
| .blocks[1] = 20, |
| .blocks_size[1] = 1024, |
| .blocks[2] = 4, |
| .blocks_size[2] = 8192, |
| |
| .slot_num = 32, |
| .payload_blocks = 32 + 20 + 4, |
| .payload_area_size = 0xf000, |
| }; |
| |
| /* |
| * ISP1763: |
| * |
| * 20kb divided in: |
| * - 8 blocks @ 256 bytes |
| * - 2 blocks @ 1024 bytes |
| * - 4 blocks @ 4096 bytes |
| */ |
| static const struct isp1760_memory_layout isp1763_memory_conf = { |
| .blocks[0] = 8, |
| .blocks_size[0] = 256, |
| .blocks[1] = 2, |
| .blocks_size[1] = 1024, |
| .blocks[2] = 4, |
| .blocks_size[2] = 4096, |
| |
| .slot_num = 16, |
| .payload_blocks = 8 + 2 + 4, |
| .payload_area_size = 0x5000, |
| }; |
| |
| static const struct regmap_range isp176x_hc_volatile_ranges[] = { |
| regmap_reg_range(ISP176x_HC_USBCMD, ISP176x_HC_ATL_PTD_LASTPTD), |
| regmap_reg_range(ISP176x_HC_BUFFER_STATUS, ISP176x_HC_MEMORY), |
| regmap_reg_range(ISP176x_HC_INTERRUPT, ISP176x_HC_OTG_CTRL_CLEAR), |
| }; |
| |
| static const struct regmap_access_table isp176x_hc_volatile_table = { |
| .yes_ranges = isp176x_hc_volatile_ranges, |
| .n_yes_ranges = ARRAY_SIZE(isp176x_hc_volatile_ranges), |
| }; |
| |
| static const struct regmap_config isp1760_hc_regmap_conf = { |
| .name = "isp1760-hc", |
| .reg_bits = 16, |
| .reg_stride = 4, |
| .val_bits = 32, |
| .fast_io = true, |
| .max_register = ISP176x_HC_OTG_CTRL_CLEAR, |
| .volatile_table = &isp176x_hc_volatile_table, |
| }; |
| |
| static const struct reg_field isp1760_hc_reg_fields[] = { |
| [HCS_PPC] = REG_FIELD(ISP176x_HC_HCSPARAMS, 4, 4), |
| [HCS_N_PORTS] = REG_FIELD(ISP176x_HC_HCSPARAMS, 0, 3), |
| [HCC_ISOC_CACHE] = REG_FIELD(ISP176x_HC_HCCPARAMS, 7, 7), |
| [HCC_ISOC_THRES] = REG_FIELD(ISP176x_HC_HCCPARAMS, 4, 6), |
| [CMD_LRESET] = REG_FIELD(ISP176x_HC_USBCMD, 7, 7), |
| [CMD_RESET] = REG_FIELD(ISP176x_HC_USBCMD, 1, 1), |
| [CMD_RUN] = REG_FIELD(ISP176x_HC_USBCMD, 0, 0), |
| [STS_PCD] = REG_FIELD(ISP176x_HC_USBSTS, 2, 2), |
| [HC_FRINDEX] = REG_FIELD(ISP176x_HC_FRINDEX, 0, 13), |
| [FLAG_CF] = REG_FIELD(ISP176x_HC_CONFIGFLAG, 0, 0), |
| [HC_ISO_PTD_DONEMAP] = REG_FIELD(ISP176x_HC_ISO_PTD_DONEMAP, 0, 31), |
| [HC_ISO_PTD_SKIPMAP] = REG_FIELD(ISP176x_HC_ISO_PTD_SKIPMAP, 0, 31), |
| [HC_ISO_PTD_LASTPTD] = REG_FIELD(ISP176x_HC_ISO_PTD_LASTPTD, 0, 31), |
| [HC_INT_PTD_DONEMAP] = REG_FIELD(ISP176x_HC_INT_PTD_DONEMAP, 0, 31), |
| [HC_INT_PTD_SKIPMAP] = REG_FIELD(ISP176x_HC_INT_PTD_SKIPMAP, 0, 31), |
| [HC_INT_PTD_LASTPTD] = REG_FIELD(ISP176x_HC_INT_PTD_LASTPTD, 0, 31), |
| [HC_ATL_PTD_DONEMAP] = REG_FIELD(ISP176x_HC_ATL_PTD_DONEMAP, 0, 31), |
| [HC_ATL_PTD_SKIPMAP] = REG_FIELD(ISP176x_HC_ATL_PTD_SKIPMAP, 0, 31), |
| [HC_ATL_PTD_LASTPTD] = REG_FIELD(ISP176x_HC_ATL_PTD_LASTPTD, 0, 31), |
| [PORT_OWNER] = REG_FIELD(ISP176x_HC_PORTSC1, 13, 13), |
| [PORT_POWER] = REG_FIELD(ISP176x_HC_PORTSC1, 12, 12), |
| [PORT_LSTATUS] = REG_FIELD(ISP176x_HC_PORTSC1, 10, 11), |
| [PORT_RESET] = REG_FIELD(ISP176x_HC_PORTSC1, 8, 8), |
| [PORT_SUSPEND] = REG_FIELD(ISP176x_HC_PORTSC1, 7, 7), |
| [PORT_RESUME] = REG_FIELD(ISP176x_HC_PORTSC1, 6, 6), |
| [PORT_PE] = REG_FIELD(ISP176x_HC_PORTSC1, 2, 2), |
| [PORT_CSC] = REG_FIELD(ISP176x_HC_PORTSC1, 1, 1), |
| [PORT_CONNECT] = REG_FIELD(ISP176x_HC_PORTSC1, 0, 0), |
| [ALL_ATX_RESET] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 31, 31), |
| [HW_ANA_DIGI_OC] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 15, 15), |
| [HW_COMN_IRQ] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 10, 10), |
| [HW_DATA_BUS_WIDTH] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 8, 8), |
| [HW_DACK_POL_HIGH] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 6, 6), |
| [HW_DREQ_POL_HIGH] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 5, 5), |
| [HW_INTR_HIGH_ACT] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 2, 2), |
| [HW_INTR_EDGE_TRIG] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 1, 1), |
| [HW_GLOBAL_INTR_EN] = REG_FIELD(ISP176x_HC_HW_MODE_CTRL, 0, 0), |
| [HC_CHIP_REV] = REG_FIELD(ISP176x_HC_CHIP_ID, 16, 31), |
| [HC_CHIP_ID_HIGH] = REG_FIELD(ISP176x_HC_CHIP_ID, 8, 15), |
| [HC_CHIP_ID_LOW] = REG_FIELD(ISP176x_HC_CHIP_ID, 0, 7), |
| [HC_SCRATCH] = REG_FIELD(ISP176x_HC_SCRATCH, 0, 31), |
| [SW_RESET_RESET_ALL] = REG_FIELD(ISP176x_HC_RESET, 0, 0), |
| [ISO_BUF_FILL] = REG_FIELD(ISP176x_HC_BUFFER_STATUS, 2, 2), |
| [INT_BUF_FILL] = REG_FIELD(ISP176x_HC_BUFFER_STATUS, 1, 1), |
| [ATL_BUF_FILL] = REG_FIELD(ISP176x_HC_BUFFER_STATUS, 0, 0), |
| [MEM_BANK_SEL] = REG_FIELD(ISP176x_HC_MEMORY, 16, 17), |
| [MEM_START_ADDR] = REG_FIELD(ISP176x_HC_MEMORY, 0, 15), |
| [HC_INTERRUPT] = REG_FIELD(ISP176x_HC_INTERRUPT, 0, 9), |
| [HC_ATL_IRQ_ENABLE] = REG_FIELD(ISP176x_HC_INTERRUPT_ENABLE, 8, 8), |
| [HC_INT_IRQ_ENABLE] = REG_FIELD(ISP176x_HC_INTERRUPT_ENABLE, 7, 7), |
| [HC_ISO_IRQ_MASK_OR] = REG_FIELD(ISP176x_HC_ISO_IRQ_MASK_OR, 0, 31), |
| [HC_INT_IRQ_MASK_OR] = REG_FIELD(ISP176x_HC_INT_IRQ_MASK_OR, 0, 31), |
| [HC_ATL_IRQ_MASK_OR] = REG_FIELD(ISP176x_HC_ATL_IRQ_MASK_OR, 0, 31), |
| [HC_ISO_IRQ_MASK_AND] = REG_FIELD(ISP176x_HC_ISO_IRQ_MASK_AND, 0, 31), |
| [HC_INT_IRQ_MASK_AND] = REG_FIELD(ISP176x_HC_INT_IRQ_MASK_AND, 0, 31), |
| [HC_ATL_IRQ_MASK_AND] = REG_FIELD(ISP176x_HC_ATL_IRQ_MASK_AND, 0, 31), |
| [HW_OTG_DISABLE_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 26, 26), |
| [HW_SW_SEL_HC_DC_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 23, 23), |
| [HW_VBUS_DRV_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 20, 20), |
| [HW_SEL_CP_EXT_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 19, 19), |
| [HW_DM_PULLDOWN_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 18, 18), |
| [HW_DP_PULLDOWN_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 17, 17), |
| [HW_DP_PULLUP_CLEAR] = REG_FIELD(ISP176x_HC_OTG_CTRL, 16, 16), |
| [HW_OTG_DISABLE] = REG_FIELD(ISP176x_HC_OTG_CTRL, 10, 10), |
| [HW_SW_SEL_HC_DC] = REG_FIELD(ISP176x_HC_OTG_CTRL, 7, 7), |
| [HW_VBUS_DRV] = REG_FIELD(ISP176x_HC_OTG_CTRL, 4, 4), |
| [HW_SEL_CP_EXT] = REG_FIELD(ISP176x_HC_OTG_CTRL, 3, 3), |
| [HW_DM_PULLDOWN] = REG_FIELD(ISP176x_HC_OTG_CTRL, 2, 2), |
| [HW_DP_PULLDOWN] = REG_FIELD(ISP176x_HC_OTG_CTRL, 1, 1), |
| [HW_DP_PULLUP] = REG_FIELD(ISP176x_HC_OTG_CTRL, 0, 0), |
| }; |
| |
| static const struct reg_field isp1763_hc_reg_fields[] = { |
| [CMD_LRESET] = REG_FIELD(ISP1763_HC_USBCMD, 7, 7), |
| [CMD_RESET] = REG_FIELD(ISP1763_HC_USBCMD, 1, 1), |
| [CMD_RUN] = REG_FIELD(ISP1763_HC_USBCMD, 0, 0), |
| [STS_PCD] = REG_FIELD(ISP1763_HC_USBSTS, 2, 2), |
| [HC_FRINDEX] = REG_FIELD(ISP1763_HC_FRINDEX, 0, 13), |
| [FLAG_CF] = REG_FIELD(ISP1763_HC_CONFIGFLAG, 0, 0), |
| [HC_ISO_PTD_DONEMAP] = REG_FIELD(ISP1763_HC_ISO_PTD_DONEMAP, 0, 15), |
| [HC_ISO_PTD_SKIPMAP] = REG_FIELD(ISP1763_HC_ISO_PTD_SKIPMAP, 0, 15), |
| [HC_ISO_PTD_LASTPTD] = REG_FIELD(ISP1763_HC_ISO_PTD_LASTPTD, 0, 15), |
| [HC_INT_PTD_DONEMAP] = REG_FIELD(ISP1763_HC_INT_PTD_DONEMAP, 0, 15), |
| [HC_INT_PTD_SKIPMAP] = REG_FIELD(ISP1763_HC_INT_PTD_SKIPMAP, 0, 15), |
| [HC_INT_PTD_LASTPTD] = REG_FIELD(ISP1763_HC_INT_PTD_LASTPTD, 0, 15), |
| [HC_ATL_PTD_DONEMAP] = REG_FIELD(ISP1763_HC_ATL_PTD_DONEMAP, 0, 15), |
| [HC_ATL_PTD_SKIPMAP] = REG_FIELD(ISP1763_HC_ATL_PTD_SKIPMAP, 0, 15), |
| [HC_ATL_PTD_LASTPTD] = REG_FIELD(ISP1763_HC_ATL_PTD_LASTPTD, 0, 15), |
| [PORT_OWNER] = REG_FIELD(ISP1763_HC_PORTSC1, 13, 13), |
| [PORT_POWER] = REG_FIELD(ISP1763_HC_PORTSC1, 12, 12), |
| [PORT_LSTATUS] = REG_FIELD(ISP1763_HC_PORTSC1, 10, 11), |
| [PORT_RESET] = REG_FIELD(ISP1763_HC_PORTSC1, 8, 8), |
| [PORT_SUSPEND] = REG_FIELD(ISP1763_HC_PORTSC1, 7, 7), |
| [PORT_RESUME] = REG_FIELD(ISP1763_HC_PORTSC1, 6, 6), |
| [PORT_PE] = REG_FIELD(ISP1763_HC_PORTSC1, 2, 2), |
| [PORT_CSC] = REG_FIELD(ISP1763_HC_PORTSC1, 1, 1), |
| [PORT_CONNECT] = REG_FIELD(ISP1763_HC_PORTSC1, 0, 0), |
| [HW_DATA_BUS_WIDTH] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 4, 4), |
| [HW_DACK_POL_HIGH] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 6, 6), |
| [HW_DREQ_POL_HIGH] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 5, 5), |
| [HW_INTF_LOCK] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 3, 3), |
| [HW_INTR_HIGH_ACT] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 2, 2), |
| [HW_INTR_EDGE_TRIG] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 1, 1), |
| [HW_GLOBAL_INTR_EN] = REG_FIELD(ISP1763_HC_HW_MODE_CTRL, 0, 0), |
| [SW_RESET_RESET_ATX] = REG_FIELD(ISP1763_HC_RESET, 3, 3), |
| [SW_RESET_RESET_ALL] = REG_FIELD(ISP1763_HC_RESET, 0, 0), |
| [HC_CHIP_ID_HIGH] = REG_FIELD(ISP1763_HC_CHIP_ID, 0, 15), |
| [HC_CHIP_ID_LOW] = REG_FIELD(ISP1763_HC_CHIP_REV, 8, 15), |
| [HC_CHIP_REV] = REG_FIELD(ISP1763_HC_CHIP_REV, 0, 7), |
| [HC_SCRATCH] = REG_FIELD(ISP1763_HC_SCRATCH, 0, 15), |
| [ISO_BUF_FILL] = REG_FIELD(ISP1763_HC_BUFFER_STATUS, 2, 2), |
| [INT_BUF_FILL] = REG_FIELD(ISP1763_HC_BUFFER_STATUS, 1, 1), |
| [ATL_BUF_FILL] = REG_FIELD(ISP1763_HC_BUFFER_STATUS, 0, 0), |
| [MEM_START_ADDR] = REG_FIELD(ISP1763_HC_MEMORY, 0, 15), |
| [HC_DATA] = REG_FIELD(ISP1763_HC_DATA, 0, 15), |
| [HC_INTERRUPT] = REG_FIELD(ISP1763_HC_INTERRUPT, 0, 10), |
| [HC_ATL_IRQ_ENABLE] = REG_FIELD(ISP1763_HC_INTERRUPT_ENABLE, 8, 8), |
| [HC_INT_IRQ_ENABLE] = REG_FIELD(ISP1763_HC_INTERRUPT_ENABLE, 7, 7), |
| [HC_ISO_IRQ_MASK_OR] = REG_FIELD(ISP1763_HC_ISO_IRQ_MASK_OR, 0, 15), |
| [HC_INT_IRQ_MASK_OR] = REG_FIELD(ISP1763_HC_INT_IRQ_MASK_OR, 0, 15), |
| [HC_ATL_IRQ_MASK_OR] = REG_FIELD(ISP1763_HC_ATL_IRQ_MASK_OR, 0, 15), |
| [HC_ISO_IRQ_MASK_AND] = REG_FIELD(ISP1763_HC_ISO_IRQ_MASK_AND, 0, 15), |
| [HC_INT_IRQ_MASK_AND] = REG_FIELD(ISP1763_HC_INT_IRQ_MASK_AND, 0, 15), |
| [HC_ATL_IRQ_MASK_AND] = REG_FIELD(ISP1763_HC_ATL_IRQ_MASK_AND, 0, 15), |
| [HW_HC_2_DIS] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 15, 15), |
| [HW_OTG_DISABLE] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 10, 10), |
| [HW_SW_SEL_HC_DC] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 7, 7), |
| [HW_VBUS_DRV] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 4, 4), |
| [HW_SEL_CP_EXT] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 3, 3), |
| [HW_DM_PULLDOWN] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 2, 2), |
| [HW_DP_PULLDOWN] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 1, 1), |
| [HW_DP_PULLUP] = REG_FIELD(ISP1763_HC_OTG_CTRL_SET, 0, 0), |
| [HW_HC_2_DIS_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 15, 15), |
| [HW_OTG_DISABLE_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 10, 10), |
| [HW_SW_SEL_HC_DC_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 7, 7), |
| [HW_VBUS_DRV_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 4, 4), |
| [HW_SEL_CP_EXT_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 3, 3), |
| [HW_DM_PULLDOWN_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 2, 2), |
| [HW_DP_PULLDOWN_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 1, 1), |
| [HW_DP_PULLUP_CLEAR] = REG_FIELD(ISP1763_HC_OTG_CTRL_CLEAR, 0, 0), |
| }; |
| |
| static const struct regmap_range isp1763_hc_volatile_ranges[] = { |
| regmap_reg_range(ISP1763_HC_USBCMD, ISP1763_HC_ATL_PTD_LASTPTD), |
| regmap_reg_range(ISP1763_HC_BUFFER_STATUS, ISP1763_HC_DATA), |
| regmap_reg_range(ISP1763_HC_INTERRUPT, ISP1763_HC_OTG_CTRL_CLEAR), |
| }; |
| |
| static const struct regmap_access_table isp1763_hc_volatile_table = { |
| .yes_ranges = isp1763_hc_volatile_ranges, |
| .n_yes_ranges = ARRAY_SIZE(isp1763_hc_volatile_ranges), |
| }; |
| |
| static const struct regmap_config isp1763_hc_regmap_conf = { |
| .name = "isp1763-hc", |
| .reg_bits = 8, |
| .reg_stride = 2, |
| .val_bits = 16, |
| .fast_io = true, |
| .max_register = ISP1763_HC_OTG_CTRL_CLEAR, |
| .volatile_table = &isp1763_hc_volatile_table, |
| }; |
| |
| static const struct regmap_range isp176x_dc_volatile_ranges[] = { |
| regmap_reg_range(ISP176x_DC_EPMAXPKTSZ, ISP176x_DC_EPTYPE), |
| regmap_reg_range(ISP176x_DC_BUFLEN, ISP176x_DC_EPINDEX), |
| }; |
| |
| static const struct regmap_access_table isp176x_dc_volatile_table = { |
| .yes_ranges = isp176x_dc_volatile_ranges, |
| .n_yes_ranges = ARRAY_SIZE(isp176x_dc_volatile_ranges), |
| }; |
| |
| static const struct regmap_config isp1761_dc_regmap_conf = { |
| .name = "isp1761-dc", |
| .reg_bits = 16, |
| .reg_stride = 4, |
| .val_bits = 32, |
| .fast_io = true, |
| .max_register = ISP176x_DC_TESTMODE, |
| .volatile_table = &isp176x_dc_volatile_table, |
| }; |
| |
| static const struct reg_field isp1761_dc_reg_fields[] = { |
| [DC_DEVEN] = REG_FIELD(ISP176x_DC_ADDRESS, 7, 7), |
| [DC_DEVADDR] = REG_FIELD(ISP176x_DC_ADDRESS, 0, 6), |
| [DC_VBUSSTAT] = REG_FIELD(ISP176x_DC_MODE, 8, 8), |
| [DC_SFRESET] = REG_FIELD(ISP176x_DC_MODE, 4, 4), |
| [DC_GLINTENA] = REG_FIELD(ISP176x_DC_MODE, 3, 3), |
| [DC_CDBGMOD_ACK] = REG_FIELD(ISP176x_DC_INTCONF, 6, 6), |
| [DC_DDBGMODIN_ACK] = REG_FIELD(ISP176x_DC_INTCONF, 4, 4), |
| [DC_DDBGMODOUT_ACK] = REG_FIELD(ISP176x_DC_INTCONF, 2, 2), |
| [DC_INTPOL] = REG_FIELD(ISP176x_DC_INTCONF, 0, 0), |
| [DC_IEPRXTX_7] = REG_FIELD(ISP176x_DC_INTENABLE, 25, 25), |
| [DC_IEPRXTX_6] = REG_FIELD(ISP176x_DC_INTENABLE, 23, 23), |
| [DC_IEPRXTX_5] = REG_FIELD(ISP176x_DC_INTENABLE, 21, 21), |
| [DC_IEPRXTX_4] = REG_FIELD(ISP176x_DC_INTENABLE, 19, 19), |
| [DC_IEPRXTX_3] = REG_FIELD(ISP176x_DC_INTENABLE, 17, 17), |
| [DC_IEPRXTX_2] = REG_FIELD(ISP176x_DC_INTENABLE, 15, 15), |
| [DC_IEPRXTX_1] = REG_FIELD(ISP176x_DC_INTENABLE, 13, 13), |
| [DC_IEPRXTX_0] = REG_FIELD(ISP176x_DC_INTENABLE, 11, 11), |
| [DC_IEP0SETUP] = REG_FIELD(ISP176x_DC_INTENABLE, 8, 8), |
| [DC_IEVBUS] = REG_FIELD(ISP176x_DC_INTENABLE, 7, 7), |
| [DC_IEHS_STA] = REG_FIELD(ISP176x_DC_INTENABLE, 5, 5), |
| [DC_IERESM] = REG_FIELD(ISP176x_DC_INTENABLE, 4, 4), |
| [DC_IESUSP] = REG_FIELD(ISP176x_DC_INTENABLE, 3, 3), |
| [DC_IEBRST] = REG_FIELD(ISP176x_DC_INTENABLE, 0, 0), |
| [DC_EP0SETUP] = REG_FIELD(ISP176x_DC_EPINDEX, 5, 5), |
| [DC_ENDPIDX] = REG_FIELD(ISP176x_DC_EPINDEX, 1, 4), |
| [DC_EPDIR] = REG_FIELD(ISP176x_DC_EPINDEX, 0, 0), |
| [DC_CLBUF] = REG_FIELD(ISP176x_DC_CTRLFUNC, 4, 4), |
| [DC_VENDP] = REG_FIELD(ISP176x_DC_CTRLFUNC, 3, 3), |
| [DC_DSEN] = REG_FIELD(ISP176x_DC_CTRLFUNC, 2, 2), |
| [DC_STATUS] = REG_FIELD(ISP176x_DC_CTRLFUNC, 1, 1), |
| [DC_STALL] = REG_FIELD(ISP176x_DC_CTRLFUNC, 0, 0), |
| [DC_BUFLEN] = REG_FIELD(ISP176x_DC_BUFLEN, 0, 15), |
| [DC_FFOSZ] = REG_FIELD(ISP176x_DC_EPMAXPKTSZ, 0, 10), |
| [DC_EPENABLE] = REG_FIELD(ISP176x_DC_EPTYPE, 3, 3), |
| [DC_ENDPTYP] = REG_FIELD(ISP176x_DC_EPTYPE, 0, 1), |
| [DC_UFRAMENUM] = REG_FIELD(ISP176x_DC_FRAMENUM, 11, 13), |
| [DC_FRAMENUM] = REG_FIELD(ISP176x_DC_FRAMENUM, 0, 10), |
| [DC_CHIP_ID_HIGH] = REG_FIELD(ISP176x_DC_CHIPID, 16, 31), |
| [DC_CHIP_ID_LOW] = REG_FIELD(ISP176x_DC_CHIPID, 0, 15), |
| [DC_SCRATCH] = REG_FIELD(ISP176x_DC_SCRATCH, 0, 15), |
| }; |
| |
| static const struct regmap_range isp1763_dc_volatile_ranges[] = { |
| regmap_reg_range(ISP1763_DC_EPMAXPKTSZ, ISP1763_DC_EPTYPE), |
| regmap_reg_range(ISP1763_DC_BUFLEN, ISP1763_DC_EPINDEX), |
| }; |
| |
| static const struct regmap_access_table isp1763_dc_volatile_table = { |
| .yes_ranges = isp1763_dc_volatile_ranges, |
| .n_yes_ranges = ARRAY_SIZE(isp1763_dc_volatile_ranges), |
| }; |
| |
| static const struct reg_field isp1763_dc_reg_fields[] = { |
| [DC_DEVEN] = REG_FIELD(ISP1763_DC_ADDRESS, 7, 7), |
| [DC_DEVADDR] = REG_FIELD(ISP1763_DC_ADDRESS, 0, 6), |
| [DC_VBUSSTAT] = REG_FIELD(ISP1763_DC_MODE, 8, 8), |
| [DC_SFRESET] = REG_FIELD(ISP1763_DC_MODE, 4, 4), |
| [DC_GLINTENA] = REG_FIELD(ISP1763_DC_MODE, 3, 3), |
| [DC_CDBGMOD_ACK] = REG_FIELD(ISP1763_DC_INTCONF, 6, 6), |
| [DC_DDBGMODIN_ACK] = REG_FIELD(ISP1763_DC_INTCONF, 4, 4), |
| [DC_DDBGMODOUT_ACK] = REG_FIELD(ISP1763_DC_INTCONF, 2, 2), |
| [DC_INTPOL] = REG_FIELD(ISP1763_DC_INTCONF, 0, 0), |
| [DC_IEPRXTX_7] = REG_FIELD(ISP1763_DC_INTENABLE, 25, 25), |
| [DC_IEPRXTX_6] = REG_FIELD(ISP1763_DC_INTENABLE, 23, 23), |
| [DC_IEPRXTX_5] = REG_FIELD(ISP1763_DC_INTENABLE, 21, 21), |
| [DC_IEPRXTX_4] = REG_FIELD(ISP1763_DC_INTENABLE, 19, 19), |
| [DC_IEPRXTX_3] = REG_FIELD(ISP1763_DC_INTENABLE, 17, 17), |
| [DC_IEPRXTX_2] = REG_FIELD(ISP1763_DC_INTENABLE, 15, 15), |
| [DC_IEPRXTX_1] = REG_FIELD(ISP1763_DC_INTENABLE, 13, 13), |
| [DC_IEPRXTX_0] = REG_FIELD(ISP1763_DC_INTENABLE, 11, 11), |
| [DC_IEP0SETUP] = REG_FIELD(ISP1763_DC_INTENABLE, 8, 8), |
| [DC_IEVBUS] = REG_FIELD(ISP1763_DC_INTENABLE, 7, 7), |
| [DC_IEHS_STA] = REG_FIELD(ISP1763_DC_INTENABLE, 5, 5), |
| [DC_IERESM] = REG_FIELD(ISP1763_DC_INTENABLE, 4, 4), |
| [DC_IESUSP] = REG_FIELD(ISP1763_DC_INTENABLE, 3, 3), |
| [DC_IEBRST] = REG_FIELD(ISP1763_DC_INTENABLE, 0, 0), |
| [DC_EP0SETUP] = REG_FIELD(ISP1763_DC_EPINDEX, 5, 5), |
| [DC_ENDPIDX] = REG_FIELD(ISP1763_DC_EPINDEX, 1, 4), |
| [DC_EPDIR] = REG_FIELD(ISP1763_DC_EPINDEX, 0, 0), |
| [DC_CLBUF] = REG_FIELD(ISP1763_DC_CTRLFUNC, 4, 4), |
| [DC_VENDP] = REG_FIELD(ISP1763_DC_CTRLFUNC, 3, 3), |
| [DC_DSEN] = REG_FIELD(ISP1763_DC_CTRLFUNC, 2, 2), |
| [DC_STATUS] = REG_FIELD(ISP1763_DC_CTRLFUNC, 1, 1), |
| [DC_STALL] = REG_FIELD(ISP1763_DC_CTRLFUNC, 0, 0), |
| [DC_BUFLEN] = REG_FIELD(ISP1763_DC_BUFLEN, 0, 15), |
| [DC_FFOSZ] = REG_FIELD(ISP1763_DC_EPMAXPKTSZ, 0, 10), |
| [DC_EPENABLE] = REG_FIELD(ISP1763_DC_EPTYPE, 3, 3), |
| [DC_ENDPTYP] = REG_FIELD(ISP1763_DC_EPTYPE, 0, 1), |
| [DC_UFRAMENUM] = REG_FIELD(ISP1763_DC_FRAMENUM, 11, 13), |
| [DC_FRAMENUM] = REG_FIELD(ISP1763_DC_FRAMENUM, 0, 10), |
| [DC_CHIP_ID_HIGH] = REG_FIELD(ISP1763_DC_CHIPID_HIGH, 0, 15), |
| [DC_CHIP_ID_LOW] = REG_FIELD(ISP1763_DC_CHIPID_LOW, 0, 15), |
| [DC_SCRATCH] = REG_FIELD(ISP1763_DC_SCRATCH, 0, 15), |
| }; |
| |
| static const struct regmap_config isp1763_dc_regmap_conf = { |
| .name = "isp1763-dc", |
| .reg_bits = 8, |
| .reg_stride = 2, |
| .val_bits = 16, |
| .fast_io = true, |
| .max_register = ISP1763_DC_TESTMODE, |
| .volatile_table = &isp1763_dc_volatile_table, |
| }; |
| |
| int isp1760_register(struct resource *mem, int irq, unsigned long irqflags, |
| struct device *dev, unsigned int devflags) |
| { |
| const struct regmap_config *hc_regmap; |
| const struct reg_field *hc_reg_fields; |
| const struct regmap_config *dc_regmap; |
| const struct reg_field *dc_reg_fields; |
| struct isp1760_device *isp; |
| struct isp1760_hcd *hcd; |
| struct isp1760_udc *udc; |
| struct regmap_field *f; |
| bool udc_enabled; |
| int ret; |
| int i; |
| |
| /* |
| * If neither the HCD not the UDC is enabled return an error, as no |
| * device would be registered. |
| */ |
| udc_enabled = ((devflags & ISP1760_FLAG_ISP1763) || |
| (devflags & ISP1760_FLAG_ISP1761)); |
| |
| if ((!IS_ENABLED(CONFIG_USB_ISP1760_HCD) || usb_disabled()) && |
| (!udc_enabled || !IS_ENABLED(CONFIG_USB_ISP1761_UDC))) |
| return -ENODEV; |
| |
| isp = devm_kzalloc(dev, sizeof(*isp), GFP_KERNEL); |
| if (!isp) |
| return -ENOMEM; |
| |
| isp->dev = dev; |
| isp->devflags = devflags; |
| hcd = &isp->hcd; |
| udc = &isp->udc; |
| |
| hcd->is_isp1763 = !!(devflags & ISP1760_FLAG_ISP1763); |
| udc->is_isp1763 = !!(devflags & ISP1760_FLAG_ISP1763); |
| |
| if (!hcd->is_isp1763 && (devflags & ISP1760_FLAG_BUS_WIDTH_8)) { |
| dev_err(dev, "isp1760/61 do not support data width 8\n"); |
| return -EINVAL; |
| } |
| |
| if (hcd->is_isp1763) { |
| hc_regmap = &isp1763_hc_regmap_conf; |
| hc_reg_fields = &isp1763_hc_reg_fields[0]; |
| dc_regmap = &isp1763_dc_regmap_conf; |
| dc_reg_fields = &isp1763_dc_reg_fields[0]; |
| } else { |
| hc_regmap = &isp1760_hc_regmap_conf; |
| hc_reg_fields = &isp1760_hc_reg_fields[0]; |
| dc_regmap = &isp1761_dc_regmap_conf; |
| dc_reg_fields = &isp1761_dc_reg_fields[0]; |
| } |
| |
| isp->rst_gpio = devm_gpiod_get_optional(dev, NULL, GPIOD_OUT_HIGH); |
| if (IS_ERR(isp->rst_gpio)) |
| return PTR_ERR(isp->rst_gpio); |
| |
| hcd->base = devm_ioremap_resource(dev, mem); |
| if (IS_ERR(hcd->base)) |
| return PTR_ERR(hcd->base); |
| |
| hcd->regs = devm_regmap_init_mmio(dev, hcd->base, hc_regmap); |
| if (IS_ERR(hcd->regs)) |
| return PTR_ERR(hcd->regs); |
| |
| for (i = 0; i < HC_FIELD_MAX; i++) { |
| f = devm_regmap_field_alloc(dev, hcd->regs, hc_reg_fields[i]); |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| hcd->fields[i] = f; |
| } |
| |
| udc->regs = devm_regmap_init_mmio(dev, hcd->base, dc_regmap); |
| if (IS_ERR(udc->regs)) |
| return PTR_ERR(udc->regs); |
| |
| for (i = 0; i < DC_FIELD_MAX; i++) { |
| f = devm_regmap_field_alloc(dev, udc->regs, dc_reg_fields[i]); |
| if (IS_ERR(f)) |
| return PTR_ERR(f); |
| |
| udc->fields[i] = f; |
| } |
| |
| if (hcd->is_isp1763) |
| hcd->memory_layout = &isp1763_memory_conf; |
| else |
| hcd->memory_layout = &isp176x_memory_conf; |
| |
| ret = isp1760_init_core(isp); |
| if (ret < 0) |
| return ret; |
| |
| if (IS_ENABLED(CONFIG_USB_ISP1760_HCD) && !usb_disabled()) { |
| ret = isp1760_hcd_register(hcd, mem, irq, |
| irqflags | IRQF_SHARED, dev); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (udc_enabled && IS_ENABLED(CONFIG_USB_ISP1761_UDC)) { |
| ret = isp1760_udc_register(isp, irq, irqflags); |
| if (ret < 0) { |
| isp1760_hcd_unregister(hcd); |
| return ret; |
| } |
| } |
| |
| dev_set_drvdata(dev, isp); |
| |
| return 0; |
| } |
| |
| void isp1760_unregister(struct device *dev) |
| { |
| struct isp1760_device *isp = dev_get_drvdata(dev); |
| |
| isp1760_udc_unregister(isp); |
| isp1760_hcd_unregister(&isp->hcd); |
| } |
| |
| MODULE_DESCRIPTION("Driver for the ISP1760 USB-controller from NXP"); |
| MODULE_AUTHOR("Sebastian Siewior <bigeasy@linuxtronix.de>"); |
| MODULE_LICENSE("GPL v2"); |
