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Commit 262c1632 authored by Alexander Shishkin's avatar Alexander Shishkin Committed by Greg Kroah-Hartman
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usb: gadget: ci13xxx: redo register access 

Use lookup table instead of conditional macrodefinitions of register
addresses. With two different possible register layouts and different
register offsets, it's easiest to build a table with register addresses
at probe time, based on the information supplied from the platform and
device capabilities. This way we get rid of branch-per-register-access.
Signed-off-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d3595d13
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Showing with 191 additions and 128 deletions
drivers/usb/gadget/ci13xxx_udc.c
View file @ 262c1632
......@@ -136,26 +136,73 @@ static int ffs_nr(u32 x)
#define ABS_AHBBURST (0x0090UL)
#define ABS_AHBMODE (0x0098UL)
/* UDC register map */
#define CAP_CAPLENGTH (0x000UL)
#define CAP_HCCPARAMS (0x008UL)
#define CAP_DCCPARAMS (0x024UL)
#define ABS_TESTMODE (udc->hw_bank.lpm ? 0x0FCUL : 0x138UL)
/* offset to CAPLENTGH (addr + data) */
#define OP_USBCMD (0x000UL)
#define OP_USBSTS (0x004UL)
#define OP_USBINTR (0x008UL)
#define OP_DEVICEADDR (0x014UL)
#define OP_ENDPTLISTADDR (0x018UL)
#define OP_PORTSC (0x044UL)
#define OP_DEVLC (0x084UL)
#define OP_USBMODE (udc->hw_bank.lpm ? 0x0C8UL : 0x068UL)
#define OP_ENDPTSETUPSTAT (udc->hw_bank.lpm ? 0x0D8UL : 0x06CUL)
#define OP_ENDPTPRIME (udc->hw_bank.lpm ? 0x0DCUL : 0x070UL)
#define OP_ENDPTFLUSH (udc->hw_bank.lpm ? 0x0E0UL : 0x074UL)
#define OP_ENDPTSTAT (udc->hw_bank.lpm ? 0x0E4UL : 0x078UL)
#define OP_ENDPTCOMPLETE (udc->hw_bank.lpm ? 0x0E8UL : 0x07CUL)
#define OP_ENDPTCTRL (udc->hw_bank.lpm ? 0x0ECUL : 0x080UL)
#define OP_LAST (udc->hw_bank.lpm ? 0x12CUL : 0x0C0UL)
static uintptr_t ci_regs_nolpm[] = {
[CAP_CAPLENGTH] = 0x000UL,
[CAP_HCCPARAMS] = 0x008UL,
[CAP_DCCPARAMS] = 0x024UL,
[CAP_TESTMODE] = 0x038UL,
[OP_USBCMD] = 0x000UL,
[OP_USBSTS] = 0x004UL,
[OP_USBINTR] = 0x008UL,
[OP_DEVICEADDR] = 0x014UL,
[OP_ENDPTLISTADDR] = 0x018UL,
[OP_PORTSC] = 0x044UL,
[OP_DEVLC] = 0x084UL,
[OP_USBMODE] = 0x068UL,
[OP_ENDPTSETUPSTAT] = 0x06CUL,
[OP_ENDPTPRIME] = 0x070UL,
[OP_ENDPTFLUSH] = 0x074UL,
[OP_ENDPTSTAT] = 0x078UL,
[OP_ENDPTCOMPLETE] = 0x07CUL,
[OP_ENDPTCTRL] = 0x080UL,
};
static uintptr_t ci_regs_lpm[] = {
[CAP_CAPLENGTH] = 0x000UL,
[CAP_HCCPARAMS] = 0x008UL,
[CAP_DCCPARAMS] = 0x024UL,
[CAP_TESTMODE] = 0x0FCUL,
[OP_USBCMD] = 0x000UL,
[OP_USBSTS] = 0x004UL,
[OP_USBINTR] = 0x008UL,
[OP_DEVICEADDR] = 0x014UL,
[OP_ENDPTLISTADDR] = 0x018UL,
[OP_PORTSC] = 0x044UL,
[OP_DEVLC] = 0x084UL,
[OP_USBMODE] = 0x0C8UL,
[OP_ENDPTSETUPSTAT] = 0x0D8UL,
[OP_ENDPTPRIME] = 0x0DCUL,
[OP_ENDPTFLUSH] = 0x0E0UL,
[OP_ENDPTSTAT] = 0x0E4UL,
[OP_ENDPTCOMPLETE] = 0x0E8UL,
[OP_ENDPTCTRL] = 0x0ECUL,
};
static int hw_alloc_regmap(struct ci13xxx *udc, bool is_lpm)
{
int i;
kfree(udc->hw_bank.regmap);
udc->hw_bank.regmap = kzalloc((OP_LAST + 1) * sizeof(void *),
GFP_KERNEL);
if (!udc->hw_bank.regmap)
return -ENOMEM;
for (i = 0; i < OP_ENDPTCTRL; i++)
udc->hw_bank.regmap[i] =
(i <= CAP_LAST ? udc->hw_bank.cap : udc->hw_bank.op) +
(is_lpm ? ci_regs_lpm[i] : ci_regs_nolpm[i]);
for (; i <= OP_LAST; i++)
udc->hw_bank.regmap[i] = udc->hw_bank.op +
4 * (i - OP_ENDPTCTRL) +
(is_lpm
? ci_regs_lpm[OP_ENDPTCTRL]
: ci_regs_nolpm[OP_ENDPTCTRL]);
return 0;
}
/**
* hw_ep_bit: calculates the bit number
......@@ -180,62 +227,64 @@ static int ep_to_bit(struct ci13xxx *udc, int n)
}
/**
* hw_read: reads from a register bitfield
* @base: register block address
* @addr: address relative to operational register base
* hw_read: reads from a hw register
* @reg: register index
* @mask: bitfield mask
*
* This function returns register bitfield data
* This function returns register contents
*/
static u32 hw_read(void __iomem *base, u32 addr, u32 mask)
static u32 hw_read(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask)
{
return ioread32(addr + base) & mask;
return ioread32(udc->hw_bank.regmap[reg]) & mask;
}
/**
* hw_write: writes to a register bitfield
* @base: register block address
* @addr: address relative to operational register base
* hw_write: writes to a hw register
* @reg: register index
* @mask: bitfield mask
* @data: new data
* @data: new value
*/
static void hw_write(void __iomem *base, u32 addr, u32 mask, u32 data)
static void hw_write(struct ci13xxx *udc, enum ci13xxx_regs reg, u32 mask,
u32 data)
{
iowrite32(hw_read(base, addr, ~mask) | (data & mask),
addr + base);
if (~mask)
data = (ioread32(udc->hw_bank.regmap[reg]) & ~mask)
| (data & mask);
iowrite32(data, udc->hw_bank.regmap[reg]);
}
/**
* hw_test_and_clear: tests & clears operational register bitfield
* @base: register block address
* @addr: address relative to operational register base
* hw_test_and_clear: tests & clears a hw register
* @reg: register index
* @mask: bitfield mask
*
* This function returns register bitfield data
* This function returns register contents
*/
static u32 hw_test_and_clear(void __iomem *base, u32 addr, u32 mask)
static u32 hw_test_and_clear(struct ci13xxx *udc, enum ci13xxx_regs reg,
u32 mask)
{
u32 reg = hw_read(base, addr, mask);
u32 val = ioread32(udc->hw_bank.regmap[reg]) & mask;
iowrite32(reg, addr + base);
return reg;
iowrite32(val, udc->hw_bank.regmap[reg]);
return val;
}
/**
* hw_test_and_write: tests & writes operational register bitfield
* @base: register block address
* @addr: address relative to operational register base
* hw_test_and_write: tests & writes a hw register
* @reg: register index
* @mask: bitfield mask
* @data: new data
* @data: new value
*
* This function returns register bitfield data
* This function returns register contents
*/
static u32 hw_test_and_write(void __iomem *base, u32 addr, u32 mask, u32 data)
static u32 hw_test_and_write(struct ci13xxx *udc, enum ci13xxx_regs reg,
u32 mask, u32 data)
{
u32 reg = hw_read(base, addr, ~0);
u32 val = hw_read(udc, reg, ~0);
iowrite32((reg & ~mask) | (data & mask), addr + base);
return (reg & mask) >> ffs_nr(mask);
hw_write(udc, reg, mask, data);
return (val & mask) >> ffs_nr(mask);
}
static int hw_device_init(struct ci13xxx *udc, void __iomem *base,
......@@ -250,14 +299,16 @@ static int hw_device_init(struct ci13xxx *udc, void __iomem *base,
udc->hw_bank.cap += cap_offset;
udc->hw_bank.op = udc->hw_bank.cap + ioread8(udc->hw_bank.cap);
reg = hw_read(udc->hw_bank.cap, CAP_HCCPARAMS, HCCPARAMS_LEN) >>
hw_alloc_regmap(udc, false);
reg = hw_read(udc, CAP_HCCPARAMS, HCCPARAMS_LEN) >>
ffs_nr(HCCPARAMS_LEN);
udc->hw_bank.lpm = reg;
hw_alloc_regmap(udc, !!reg);
udc->hw_bank.size = udc->hw_bank.op - udc->hw_bank.abs;
udc->hw_bank.size += OP_LAST;
udc->hw_bank.size /= sizeof(u32);
reg = hw_read(udc->hw_bank.cap, CAP_DCCPARAMS, DCCPARAMS_DEN) >>
reg = hw_read(udc, CAP_DCCPARAMS, DCCPARAMS_DEN) >>
ffs_nr(DCCPARAMS_DEN);
udc->hw_ep_max = reg * 2; /* cache hw ENDPT_MAX */
......@@ -281,11 +332,11 @@ static int hw_device_init(struct ci13xxx *udc, void __iomem *base,
static int hw_device_reset(struct ci13xxx *udc)
{
/* should flush & stop before reset */
hw_write(udc->hw_bank.op, OP_ENDPTFLUSH, ~0, ~0);
hw_write(udc->hw_bank.op, OP_USBCMD, USBCMD_RS, 0);
hw_write(udc, OP_ENDPTFLUSH, ~0, ~0);
hw_write(udc, OP_USBCMD, USBCMD_RS, 0);
hw_write(udc->hw_bank.op, OP_USBCMD, USBCMD_RST, USBCMD_RST);
while (hw_read(udc->hw_bank.op, OP_USBCMD, USBCMD_RST))
hw_write(udc, OP_USBCMD, USBCMD_RST, USBCMD_RST);
while (hw_read(udc, OP_USBCMD, USBCMD_RST))
udelay(10); /* not RTOS friendly */
......@@ -294,17 +345,15 @@ static int hw_device_reset(struct ci13xxx *udc)
CI13XXX_CONTROLLER_RESET_EVENT);
if (udc->udc_driver->flags & CI13XXX_DISABLE_STREAMING)
hw_write(udc->hw_bank.op, OP_USBMODE, USBMODE_SDIS,
USBMODE_SDIS);
hw_write(udc, OP_USBMODE, USBMODE_SDIS, USBMODE_SDIS);
/* USBMODE should be configured step by step */
hw_write(udc->hw_bank.op, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE);
hw_write(udc->hw_bank.op, OP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE);
hw_write(udc, OP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE);
hw_write(udc, OP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE);
/* HW >= 2.3 */
hw_write(udc->hw_bank.op, OP_USBMODE, USBMODE_SLOM, USBMODE_SLOM);
hw_write(udc, OP_USBMODE, USBMODE_SLOM, USBMODE_SLOM);
if (hw_read(udc->hw_bank.op, OP_USBMODE, USBMODE_CM) !=
USBMODE_CM_DEVICE) {
if (hw_read(udc, OP_USBMODE, USBMODE_CM) != USBMODE_CM_DEVICE) {
pr_err("cannot enter in device mode");
pr_err("lpm = %i", udc->hw_bank.lpm);
return -ENODEV;
......@@ -323,14 +372,14 @@ static int hw_device_reset(struct ci13xxx *udc)
static int hw_device_state(struct ci13xxx *udc, u32 dma)
{
if (dma) {
hw_write(udc->hw_bank.op, OP_ENDPTLISTADDR, ~0, dma);
hw_write(udc, OP_ENDPTLISTADDR, ~0, dma);
/* interrupt, error, port change, reset, sleep/suspend */
hw_write(udc->hw_bank.op, OP_USBINTR, ~0,
hw_write(udc, OP_USBINTR, ~0,
USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
hw_write(udc->hw_bank.op, OP_USBCMD, USBCMD_RS, USBCMD_RS);
hw_write(udc, OP_USBCMD, USBCMD_RS, USBCMD_RS);
} else {
hw_write(udc->hw_bank.op, OP_USBCMD, USBCMD_RS, 0);
hw_write(udc->hw_bank.op, OP_USBINTR, ~0, 0);
hw_write(udc, OP_USBCMD, USBCMD_RS, 0);
hw_write(udc, OP_USBINTR, ~0, 0);
}
return 0;
}
......@@ -348,10 +397,10 @@ static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
do {
/* flush any pending transfer */
hw_write(udc->hw_bank.op, OP_ENDPTFLUSH, BIT(n), BIT(n));
while (hw_read(udc->hw_bank.op, OP_ENDPTFLUSH, BIT(n)))
hw_write(udc, OP_ENDPTFLUSH, BIT(n), BIT(n));
while (hw_read(udc, OP_ENDPTFLUSH, BIT(n)))
cpu_relax();
} while (hw_read(udc->hw_bank.op, OP_ENDPTSTAT, BIT(n)));
} while (hw_read(udc, OP_ENDPTSTAT, BIT(n)));
return 0;
}
......@@ -366,7 +415,7 @@ static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
{
hw_ep_flush(udc, num, dir);
hw_write(udc->hw_bank.op, OP_ENDPTCTRL + num * sizeof(u32),
hw_write(udc, OP_ENDPTCTRL + num,
dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
return 0;
}
......@@ -402,7 +451,7 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
mask |= ENDPTCTRL_RXE; /* enable */
data |= ENDPTCTRL_RXE;
}
hw_write(udc->hw_bank.op, OP_ENDPTCTRL + num * sizeof(u32), mask, data);
hw_write(udc, OP_ENDPTCTRL + num, mask, data);
return 0;
}
......@@ -417,8 +466,7 @@ static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
{
u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
return !!hw_read(udc->hw_bank.op, OP_ENDPTCTRL + num * sizeof(u32),
mask);
return hw_read(udc, OP_ENDPTCTRL + num, mask) ? 1 : 0;
}
/**
......@@ -431,7 +479,7 @@ static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
{
n = ep_to_bit(udc, n);
return hw_test_and_clear(udc->hw_bank.op, OP_ENDPTSETUPSTAT, BIT(n));
return hw_test_and_clear(udc, OP_ENDPTSETUPSTAT, BIT(n));
}
/**
......@@ -446,16 +494,14 @@ static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
{
int n = hw_ep_bit(num, dir);
if (is_ctrl && dir == RX &&
hw_read(udc->hw_bank.op, OP_ENDPTSETUPSTAT, BIT(num)))
if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
hw_write(udc->hw_bank.op, OP_ENDPTPRIME, BIT(n), BIT(n));
hw_write(udc, OP_ENDPTPRIME, BIT(n), BIT(n));
while (hw_read(udc->hw_bank.op, OP_ENDPTPRIME, BIT(n)))
while (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
cpu_relax();
if (is_ctrl && dir == RX &&
hw_read(udc->hw_bank.op, OP_ENDPTSETUPSTAT, BIT(num)))
if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
/* status shoult be tested according with manual but it doesn't work */
......@@ -477,14 +523,13 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
return -EINVAL;
do {
u32 addr = OP_ENDPTCTRL + num * sizeof(u32);
enum ci13xxx_regs reg = OP_ENDPTCTRL + num;
u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
/* data toggle - reserved for EP0 but it's in ESS */
hw_write(udc->hw_bank.op, addr, mask_xs|mask_xr,
hw_write(udc, reg, mask_xs|mask_xr,
value ? mask_xs : mask_xr);
} while (value != hw_ep_get_halt(udc, num, dir));
return 0;
......@@ -502,9 +547,8 @@ static int hw_intr_clear(struct ci13xxx *udc, int n)
if (n >= REG_BITS)
return -EINVAL;
hw_write(udc->hw_bank.op, OP_USBINTR, BIT(n), 0);
hw_write(udc->hw_bank.op, OP_USBSTS, BIT(n), BIT(n));
hw_write(udc, OP_USBINTR, BIT(n), 0);
hw_write(udc, OP_USBSTS, BIT(n), BIT(n));
return 0;
}
......@@ -520,11 +564,10 @@ static int hw_intr_force(struct ci13xxx *udc, int n)
if (n >= REG_BITS)
return -EINVAL;
hw_write(udc->hw_bank.cap, ABS_TESTMODE, TESTMODE_FORCE,
TESTMODE_FORCE);
hw_write(udc->hw_bank.op, OP_USBINTR, BIT(n), BIT(n));
hw_write(udc->hw_bank.op, OP_USBSTS, BIT(n), BIT(n));
hw_write(udc->hw_bank.cap, ABS_TESTMODE, TESTMODE_FORCE, 0);
hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
hw_write(udc, OP_USBINTR, BIT(n), BIT(n));
hw_write(udc, OP_USBSTS, BIT(n), BIT(n));
hw_write(udc, CAP_TESTMODE, TESTMODE_FORCE, 0);
return 0;
}
......@@ -535,9 +578,8 @@ static int hw_intr_force(struct ci13xxx *udc, int n)
*/
static int hw_port_is_high_speed(struct ci13xxx *udc)
{
return udc->hw_bank.lpm
? hw_read(udc->hw_bank.op, OP_DEVLC, DEVLC_PSPD)
: hw_read(udc->hw_bank.op, OP_PORTSC, PORTSC_HSP);
return udc->hw_bank.lpm ? hw_read(udc, OP_DEVLC, DEVLC_PSPD) :
hw_read(udc, OP_PORTSC, PORTSC_HSP);
}
/**
......@@ -547,8 +589,7 @@ static int hw_port_is_high_speed(struct ci13xxx *udc)
*/
static u8 hw_port_test_get(struct ci13xxx *udc)
{
return hw_read(udc->hw_bank.op, OP_PORTSC, PORTSC_PTC) >>
ffs_nr(PORTSC_PTC);
return hw_read(udc, OP_PORTSC, PORTSC_PTC) >> ffs_nr(PORTSC_PTC);
}
/**
......@@ -564,8 +605,7 @@ static int hw_port_test_set(struct ci13xxx *udc, u8 mode)
if (mode > TEST_MODE_MAX)
return -EINVAL;
hw_write(udc->hw_bank.op, OP_PORTSC, PORTSC_PTC,
mode << ffs_nr(PORTSC_PTC));
hw_write(udc, OP_PORTSC, PORTSC_PTC, mode << ffs_nr(PORTSC_PTC));
return 0;
}
......@@ -576,7 +616,7 @@ static int hw_port_test_set(struct ci13xxx *udc, u8 mode)
*/
static u32 hw_read_intr_enable(struct ci13xxx *udc)
{
return hw_read(udc->hw_bank.op, OP_USBINTR, ~0);
return hw_read(udc, OP_USBINTR, ~0);
}
/**
......@@ -586,7 +626,7 @@ static u32 hw_read_intr_enable(struct ci13xxx *udc)
*/
static u32 hw_read_intr_status(struct ci13xxx *udc)
{
return hw_read(udc->hw_bank.op, OP_USBSTS, ~0);
return hw_read(udc, OP_USBSTS, ~0);
}
/**
......@@ -604,7 +644,7 @@ static size_t hw_register_read(struct ci13xxx *udc, u32 *buf, size_t size)
size = udc->hw_bank.size;
for (i = 0; i < size; i++)
buf[i] = hw_read(udc->hw_bank.cap, i * sizeof(u32), ~0);
buf[i] = hw_read(udc, i * sizeof(u32), ~0);
return size;
}
......@@ -627,7 +667,7 @@ static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
/* align */
addr *= sizeof(u32);
hw_write(udc->hw_bank.cap, addr, ~0, data);
hw_write(udc, addr, ~0, data);
return 0;
}
......@@ -641,7 +681,7 @@ static int hw_register_write(struct ci13xxx *udc, u16 addr, u32 data)
static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
{
n = ep_to_bit(udc, n);
return hw_test_and_clear(udc->hw_bank.op, OP_ENDPTCOMPLETE, BIT(n));
return hw_test_and_clear(udc, OP_ENDPTCOMPLETE, BIT(n));
}
/**
......@@ -654,7 +694,7 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
{
u32 reg = hw_read_intr_status(udc) & hw_read_intr_enable(udc);
hw_write(udc->hw_bank.op, OP_USBSTS, ~0, reg);
hw_write(udc, OP_USBSTS, ~0, reg);
return reg;
}
......@@ -666,7 +706,7 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
*/
static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
{
return hw_test_and_write(udc->hw_bank.op, OP_USBCMD, USBCMD_SUTW, 0);
return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, 0);
}
/**
......@@ -677,8 +717,7 @@ static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
*/
static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
{
return hw_test_and_write(udc->hw_bank.op, OP_USBCMD, USBCMD_SUTW,
USBCMD_SUTW);
return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
}
/**
......@@ -690,8 +729,7 @@ static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
static int hw_usb_set_address(struct ci13xxx *udc, u8 value)
{
/* advance */
hw_write(udc->hw_bank.op, OP_DEVICEADDR,
DEVICEADDR_USBADR | DEVICEADDR_USBADRA,
hw_write(udc, OP_DEVICEADDR, DEVICEADDR_USBADR | DEVICEADDR_USBADRA,
value << ffs_nr(DEVICEADDR_USBADR) | DEVICEADDR_USBADRA);
return 0;
}
......@@ -707,16 +745,16 @@ static int hw_usb_reset(struct ci13xxx *udc)
hw_usb_set_address(udc, 0);
/* ESS flushes only at end?!? */
hw_write(udc->hw_bank.op, OP_ENDPTFLUSH, ~0, ~0);
hw_write(udc, OP_ENDPTFLUSH, ~0, ~0);
/* clear setup token semaphores */
hw_write(udc->hw_bank.op, OP_ENDPTSETUPSTAT, 0, 0);
hw_write(udc, OP_ENDPTSETUPSTAT, 0, 0);
/* clear complete status */
hw_write(udc->hw_bank.op, OP_ENDPTCOMPLETE, 0, 0);
hw_write(udc, OP_ENDPTCOMPLETE, 0, 0);
/* wait until all bits cleared */
while (hw_read(udc->hw_bank.op, OP_ENDPTPRIME, ~0))
while (hw_read(udc, OP_ENDPTPRIME, ~0))
udelay(10); /* not RTOS friendly */
/* reset all endpoints ? */
......@@ -1500,15 +1538,13 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
else
mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK;
wmb();
if (hw_read(udc->hw_bank.op, OP_ENDPTPRIME, BIT(n)))
if (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
goto done;
do {
hw_write(udc->hw_bank.op, OP_USBCMD, USBCMD_ATDTW,
USBCMD_ATDTW);
tmp_stat = hw_read(udc->hw_bank.op, OP_ENDPTSTAT,
BIT(n));
} while (!hw_read(udc->hw_bank.op, OP_USBCMD, USBCMD_ATDTW));
hw_write(udc->hw_bank.op, OP_USBCMD, USBCMD_ATDTW, 0);
hw_write(udc, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
tmp_stat = hw_read(udc, OP_ENDPTSTAT, BIT(n));
} while (!hw_read(udc, OP_USBCMD, USBCMD_ATDTW));
hw_write(udc, OP_USBCMD, USBCMD_ATDTW, 0);
if (tmp_stat)
goto done;
}
......@@ -2513,12 +2549,12 @@ static int ci13xxx_wakeup(struct usb_gadget *_gadget)
trace("remote wakeup feature is not enabled\n");
goto out;
}
if (!hw_read(udc->hw_bank.op, OP_PORTSC, PORTSC_SUSP)) {
if (!hw_read(udc, OP_PORTSC, PORTSC_SUSP)) {
ret = -EINVAL;
trace("port is not suspended\n");
goto out;
}
hw_write(udc->hw_bank.op, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
hw_write(udc, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
out:
spin_unlock_irqrestore(&udc->lock, flags);
return ret;
......@@ -2786,7 +2822,7 @@ static irqreturn_t udc_irq(void)
spin_lock(&udc->lock);
if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
if (hw_read(udc->hw_bank.op, OP_USBMODE, USBMODE_CM) !=
if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
USBMODE_CM_DEVICE) {
spin_unlock(&udc->lock);
return IRQ_NONE;
......@@ -2993,6 +3029,7 @@ static void udc_remove(void)
#endif
device_unregister(&udc->gadget.dev);
kfree(udc->hw_bank.regmap);
kfree(udc);
_udc = NULL;
}
drivers/usb/gadget/ci13xxx_udc.h
View file @ 262c1632
......@@ -120,6 +120,7 @@ struct hw_bank {
void __iomem *cap; /* bus map offset + CAP offset */
void __iomem *op; /* bus map offset + OP offset */
size_t size; /* bank size */
void *__iomem *regmap;
};
/* CI13XXX UDC descriptor & global resources */
......@@ -158,6 +159,31 @@ struct ci13xxx {
/* register size */
#define REG_BITS (32)
/* register indices */
enum ci13xxx_regs {
CAP_CAPLENGTH,
CAP_HCCPARAMS,
CAP_DCCPARAMS,
CAP_TESTMODE,
CAP_LAST = CAP_TESTMODE,
OP_USBCMD,
OP_USBSTS,
OP_USBINTR,
OP_DEVICEADDR,
OP_ENDPTLISTADDR,
OP_PORTSC,
OP_DEVLC,
OP_USBMODE,
OP_ENDPTSETUPSTAT,
OP_ENDPTPRIME,
OP_ENDPTFLUSH,
OP_ENDPTSTAT,
OP_ENDPTCOMPLETE,
OP_ENDPTCTRL,
/* endptctrl1..15 follow */
OP_LAST = OP_ENDPTCTRL + ENDPT_MAX / 2,
};
/* HCCPARAMS */
#define HCCPARAMS_LEN BIT(17)
......
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