diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs')
| -rw-r--r-- | drivers/usb/renesas_usbhs/Makefile | 2 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/common.c | 22 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/common.h | 7 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/fifo.c | 21 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/pipe.c | 19 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/pipe.h | 2 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/rcar3.c | 35 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/rza.c | 52 | ||||
| -rw-r--r-- | drivers/usb/renesas_usbhs/rza.h | 4 |
9 files changed, 140 insertions, 24 deletions
diff --git a/drivers/usb/renesas_usbhs/Makefile b/drivers/usb/renesas_usbhs/Makefile index fac147a3ad23..5c5b51bb48ef 100644 --- a/drivers/usb/renesas_usbhs/Makefile +++ b/drivers/usb/renesas_usbhs/Makefile @@ -5,7 +5,7 @@ obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o -renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o rcar3.o +renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o rcar3.o rza.o ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),) renesas_usbhs-y += mod_host.o diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 56079bb6759a..4310df46639d 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -17,6 +17,7 @@ #include "common.h" #include "rcar2.h" #include "rcar3.h" +#include "rza.h" /* * image of renesas_usbhs @@ -488,6 +489,10 @@ static const struct of_device_id usbhs_of_match[] = { .compatible = "renesas,rcar-gen3-usbhs", .data = (void *)USBHS_TYPE_RCAR_GEN3, }, + { + .compatible = "renesas,rza1-usbhs", + .data = (void *)USBHS_TYPE_RZA1, + }, { }, }; MODULE_DEVICE_TABLE(of, usbhs_of_match); @@ -520,6 +525,11 @@ static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev) dparam->pipe_size = ARRAY_SIZE(usbhsc_new_pipe); } + if (dparam->type == USBHS_TYPE_RZA1) { + dparam->pipe_configs = usbhsc_new_pipe; + dparam->pipe_size = ARRAY_SIZE(usbhsc_new_pipe); + } + return info; } @@ -581,6 +591,18 @@ static int usbhs_probe(struct platform_device *pdev) break; case USBHS_TYPE_RCAR_GEN3_WITH_PLL: priv->pfunc = usbhs_rcar3_with_pll_ops; + if (!IS_ERR_OR_NULL(priv->edev)) { + priv->nb.notifier_call = priv->pfunc.notifier; + ret = devm_extcon_register_notifier(&pdev->dev, + priv->edev, + EXTCON_USB_HOST, + &priv->nb); + if (ret < 0) + dev_err(&pdev->dev, "no notifier registered\n"); + } + break; + case USBHS_TYPE_RZA1: + priv->pfunc = usbhs_rza1_ops; break; default: if (!info->platform_callback.get_id) { diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h index 64797784a6df..f619afeae2b8 100644 --- a/drivers/usb/renesas_usbhs/common.h +++ b/drivers/usb/renesas_usbhs/common.h @@ -98,6 +98,7 @@ struct usbhs_priv; #define D2FIFOCTR 0x00F2 /* for R-Car Gen2 */ #define D3FIFOSEL 0x00F4 /* for R-Car Gen2 */ #define D3FIFOCTR 0x00F6 /* for R-Car Gen2 */ +#define SUSPMODE 0x0102 /* for RZ/A */ /* SYSCFG */ #define SCKE (1 << 10) /* USB Module Clock Enable */ @@ -106,6 +107,8 @@ struct usbhs_priv; #define DRPD (1 << 5) /* D+ Line/D- Line Resistance Control */ #define DPRPU (1 << 4) /* D+ Line Resistance Control */ #define USBE (1 << 0) /* USB Module Operation Enable */ +#define UCKSEL (1 << 2) /* Clock Select for RZ/A1 */ +#define UPLLE (1 << 1) /* USB PLL Enable for RZ/A1 */ /* DVSTCTR */ #define EXTLP (1 << 10) /* Controls the EXTLP pin output state */ @@ -233,6 +236,9 @@ struct usbhs_priv; #define USBSPD_SPEED_FULL 0x2 #define USBSPD_SPEED_HIGH 0x3 +/* SUSPMODE */ +#define SUSPM (1 << 14) /* SuspendM Control */ + /* * struct */ @@ -249,6 +255,7 @@ struct usbhs_priv { struct platform_device *pdev; struct extcon_dev *edev; + struct notifier_block nb; spinlock_t lock; diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 2d24ef3076ef..5925d111bd47 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -94,8 +94,6 @@ static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe) return list_first_entry_or_null(&pipe->list, struct usbhs_pkt, node); } -static void usbhsf_fifo_clear(struct usbhs_pipe *pipe, - struct usbhs_fifo *fifo); static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo); static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo, @@ -124,10 +122,11 @@ struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt) chan = usbhsf_dma_chan_get(fifo, pkt); if (chan) { dmaengine_terminate_all(chan); - usbhsf_fifo_clear(pipe, fifo); usbhsf_dma_unmap(pkt); } + usbhs_pipe_clear_without_sequence(pipe, 0, 0); + __usbhsf_pkt_del(pkt); } @@ -256,15 +255,9 @@ static void usbhsf_send_terminator(struct usbhs_pipe *pipe, static int usbhsf_fifo_barrier(struct usbhs_priv *priv, struct usbhs_fifo *fifo) { - int timeout = 1024; - - do { - /* The FIFO port is accessible */ - if (usbhs_read(priv, fifo->ctr) & FRDY) - return 0; - - udelay(10); - } while (timeout--); + /* The FIFO port is accessible */ + if (usbhs_read(priv, fifo->ctr) & FRDY) + return 0; return -EBUSY; } @@ -278,8 +271,8 @@ static void usbhsf_fifo_clear(struct usbhs_pipe *pipe, if (!usbhs_pipe_is_dcp(pipe)) { /* * This driver checks the pipe condition first to avoid -EBUSY - * from usbhsf_fifo_barrier() with about 10 msec delay in - * the interrupt handler if the pipe is RX direction and empty. + * from usbhsf_fifo_barrier() if the pipe is RX direction and + * empty. */ if (usbhs_pipe_is_dir_in(pipe)) ret = usbhs_pipe_is_accessible(pipe); diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c index 093cd8e87335..9677e0e31475 100644 --- a/drivers/usb/renesas_usbhs/pipe.c +++ b/drivers/usb/renesas_usbhs/pipe.c @@ -590,10 +590,22 @@ void usbhs_pipe_clear(struct usbhs_pipe *pipe) } } -void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) +/* Should call usbhsp_pipe_select() before */ +void usbhs_pipe_clear_without_sequence(struct usbhs_pipe *pipe, + int needs_bfre, int bfre_enable) { int sequence; + usbhsp_pipe_select(pipe); + sequence = usbhs_pipe_get_data_sequence(pipe); + if (needs_bfre) + usbhsp_pipe_cfg_set(pipe, BFRE, bfre_enable ? BFRE : 0); + usbhs_pipe_clear(pipe); + usbhs_pipe_data_sequence(pipe, sequence); +} + +void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) +{ if (usbhs_pipe_is_dcp(pipe)) return; @@ -602,10 +614,7 @@ void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable) if (!(enable ^ !!(usbhsp_pipe_cfg_get(pipe) & BFRE))) return; - sequence = usbhs_pipe_get_data_sequence(pipe); - usbhsp_pipe_cfg_set(pipe, BFRE, enable ? BFRE : 0); - usbhs_pipe_clear(pipe); - usbhs_pipe_data_sequence(pipe, sequence); + usbhs_pipe_clear_without_sequence(pipe, 1, enable); } static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type) diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h index d3d002244891..3080423e600c 100644 --- a/drivers/usb/renesas_usbhs/pipe.h +++ b/drivers/usb/renesas_usbhs/pipe.h @@ -80,6 +80,8 @@ void usbhs_pipe_init(struct usbhs_priv *priv, struct usbhs_pkt *pkt, int map)); int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe); void usbhs_pipe_clear(struct usbhs_pipe *pipe); +void usbhs_pipe_clear_without_sequence(struct usbhs_pipe *pipe, + int needs_bfre, int bfre_enable); int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe); void usbhs_pipe_enable(struct usbhs_pipe *pipe); void usbhs_pipe_disable(struct usbhs_pipe *pipe); diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index c929d296c77b..d0ea4ff89622 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -27,6 +27,7 @@ * Remarks: bit[31:11] and bit[9:6] should be 0 */ #define UGCTRL2_RESERVED_3 0x00000001 /* bit[3:0] should be B'0001 */ +#define UGCTRL2_USB0SEL_EHCI 0x00000010 #define UGCTRL2_USB0SEL_HSUSB 0x00000020 #define UGCTRL2_USB0SEL_OTG 0x00000030 #define UGCTRL2_VBUSSEL 0x00000400 @@ -44,13 +45,25 @@ static u32 usbhs_read32(struct usbhs_priv *priv, u32 reg) return ioread32(priv->base + reg); } +static void usbhs_rcar3_set_ugctrl2(struct usbhs_priv *priv, u32 val) +{ + usbhs_write32(priv, UGCTRL2, val | UGCTRL2_RESERVED_3); +} + +static void usbhs_rcar3_set_usbsel(struct usbhs_priv *priv, bool ehci) +{ + if (ehci) + usbhs_rcar3_set_ugctrl2(priv, UGCTRL2_USB0SEL_EHCI); + else + usbhs_rcar3_set_ugctrl2(priv, UGCTRL2_USB0SEL_HSUSB); +} + static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, void __iomem *base, int enable) { struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); - usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG | - UGCTRL2_VBUSSEL); + usbhs_rcar3_set_ugctrl2(priv, UGCTRL2_USB0SEL_OTG | UGCTRL2_VBUSSEL); if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); @@ -70,11 +83,14 @@ static int usbhs_rcar3_power_and_pll_ctrl(struct platform_device *pdev, struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); u32 val; int timeout = 1000; + bool is_host = false; if (enable) { usbhs_write32(priv, UGCTRL, 0); /* release PLLRESET */ - usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | - UGCTRL2_USB0SEL_HSUSB); + if (priv->edev) + is_host = extcon_get_state(priv->edev, EXTCON_USB_HOST); + + usbhs_rcar3_set_usbsel(priv, is_host); usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); do { @@ -96,6 +112,16 @@ static int usbhs_rcar3_get_id(struct platform_device *pdev) return USBHS_GADGET; } +static int usbhs_rcar3_notifier(struct notifier_block *nb, unsigned long event, + void *data) +{ + struct usbhs_priv *priv = container_of(nb, struct usbhs_priv, nb); + + usbhs_rcar3_set_usbsel(priv, !!event); + + return NOTIFY_DONE; +} + const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = { .power_ctrl = usbhs_rcar3_power_ctrl, .get_id = usbhs_rcar3_get_id, @@ -104,4 +130,5 @@ const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = { const struct renesas_usbhs_platform_callback usbhs_rcar3_with_pll_ops = { .power_ctrl = usbhs_rcar3_power_and_pll_ctrl, .get_id = usbhs_rcar3_get_id, + .notifier = usbhs_rcar3_notifier, }; diff --git a/drivers/usb/renesas_usbhs/rza.c b/drivers/usb/renesas_usbhs/rza.c new file mode 100644 index 000000000000..5b287257ec11 --- /dev/null +++ b/drivers/usb/renesas_usbhs/rza.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Renesas USB driver RZ/A initialization and power control + * + * Copyright (C) 2018 Chris Brandt + * Copyright (C) 2018 Renesas Electronics Corporation + */ + +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/of_device.h> +#include "common.h" +#include "rza.h" + +static int usbhs_rza1_hardware_init(struct platform_device *pdev) +{ + struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); + struct device_node *usb_x1_clk, *extal_clk; + u32 freq_usb = 0, freq_extal = 0; + + /* Input Clock Selection (NOTE: ch0 controls both ch0 and ch1) */ + usb_x1_clk = of_find_node_by_name(NULL, "usb_x1"); + extal_clk = of_find_node_by_name(NULL, "extal"); + of_property_read_u32(usb_x1_clk, "clock-frequency", &freq_usb); + of_property_read_u32(extal_clk, "clock-frequency", &freq_extal); + if (freq_usb == 0) { + if (freq_extal == 12000000) { + /* Select 12MHz XTAL */ + usbhs_bset(priv, SYSCFG, UCKSEL, UCKSEL); + } else { + dev_err(usbhs_priv_to_dev(priv), "A 48MHz USB clock or 12MHz main clock is required.\n"); + return -EIO; + } + } + + /* Enable USB PLL (NOTE: ch0 controls both ch0 and ch1) */ + usbhs_bset(priv, SYSCFG, UPLLE, UPLLE); + udelay(1000); + usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM); + + return 0; +} + +static int usbhs_rza_get_id(struct platform_device *pdev) +{ + return USBHS_GADGET; +} + +const struct renesas_usbhs_platform_callback usbhs_rza1_ops = { + .hardware_init = usbhs_rza1_hardware_init, + .get_id = usbhs_rza_get_id, +}; diff --git a/drivers/usb/renesas_usbhs/rza.h b/drivers/usb/renesas_usbhs/rza.h new file mode 100644 index 000000000000..ca917ca54f6d --- /dev/null +++ b/drivers/usb/renesas_usbhs/rza.h @@ -0,0 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "common.h" + +extern const struct renesas_usbhs_platform_callback usbhs_rza1_ops; |