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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 968f3ee8-47e4-4043-c034-08d68e5e0490 X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Feb 2019 07:12:54.8541 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR11MB3077 X-OriginatorOrg: microchip.com Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Ajay Singh Moved '/driver/staging/wilc1000/wilc_sdio.c' to 'drivers/net/wireless/microchip/wilc1000/'. Signed-off-by: Ajay Singh --- .../net/wireless/microchip/wilc1000/wilc_sdio.c | 1140 ++++++++++++++++= ++++ 1 file changed, 1140 insertions(+) create mode 100644 drivers/net/wireless/microchip/wilc1000/wilc_sdio.c diff --git a/drivers/net/wireless/microchip/wilc1000/wilc_sdio.c b/drivers/= net/wireless/microchip/wilc1000/wilc_sdio.c new file mode 100644 index 0000000..b789c57 --- /dev/null +++ b/drivers/net/wireless/microchip/wilc1000/wilc_sdio.c @@ -0,0 +1,1140 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiari= es. + * All rights reserved. + */ + +#include +#include + +#include "wilc_wfi_netdevice.h" + +#define SDIO_MODALIAS "wilc1000_sdio" + +#define SDIO_VENDOR_ID_WILC 0x0296 +#define SDIO_DEVICE_ID_WILC 0x5347 + +static const struct sdio_device_id wilc_sdio_ids[] =3D { + { SDIO_DEVICE(SDIO_VENDOR_ID_WILC, SDIO_DEVICE_ID_WILC) }, + { }, +}; + +#define WILC_SDIO_BLOCK_SIZE 512 + +struct wilc_sdio { + bool irq_gpio; + u32 block_size; + int nint; +/* Max num interrupts allowed in registers 0xf7, 0xf8 */ +#define MAX_NUN_INT_THRPT_ENH2 (5) + int has_thrpt_enh3; +}; + +struct sdio_cmd52 { + u32 read_write: 1; + u32 function: 3; + u32 raw: 1; + u32 address: 17; + u32 data: 8; +}; + +struct sdio_cmd53 { + u32 read_write: 1; + u32 function: 3; + u32 block_mode: 1; + u32 increment: 1; + u32 address: 17; + u32 count: 9; + u8 *buffer; + u32 block_size; +}; + +static const struct wilc_hif_func wilc_hif_sdio; + +static void wilc_sdio_interrupt(struct sdio_func *func) +{ + sdio_release_host(func); + wilc_handle_isr(sdio_get_drvdata(func)); + sdio_claim_host(func); +} + +static int wilc_sdio_cmd52(struct wilc *wilc, struct sdio_cmd52 *cmd) +{ + struct sdio_func *func =3D container_of(wilc->dev, struct sdio_func, dev)= ; + int ret; + u8 data; + + sdio_claim_host(func); + + func->num =3D cmd->function; + if (cmd->read_write) { /* write */ + if (cmd->raw) { + sdio_writeb(func, cmd->data, cmd->address, &ret); + data =3D sdio_readb(func, cmd->address, &ret); + cmd->data =3D data; + } else { + sdio_writeb(func, cmd->data, cmd->address, &ret); + } + } else { /* read */ + data =3D sdio_readb(func, cmd->address, &ret); + cmd->data =3D data; + } + + sdio_release_host(func); + + if (ret) + dev_err(&func->dev, "%s..failed, err(%d)\n", __func__, ret); + return ret; +} + +static int wilc_sdio_cmd53(struct wilc *wilc, struct sdio_cmd53 *cmd) +{ + struct sdio_func *func =3D container_of(wilc->dev, struct sdio_func, dev)= ; + int size, ret; + + sdio_claim_host(func); + + func->num =3D cmd->function; + func->cur_blksize =3D cmd->block_size; + if (cmd->block_mode) + size =3D cmd->count * cmd->block_size; + else + size =3D cmd->count; + + if (cmd->read_write) { /* write */ + ret =3D sdio_memcpy_toio(func, cmd->address, + (void *)cmd->buffer, size); + } else { /* read */ + ret =3D sdio_memcpy_fromio(func, (void *)cmd->buffer, + cmd->address, size); + } + + sdio_release_host(func); + + if (ret) + dev_err(&func->dev, "%s..failed, err(%d)\n", __func__, ret); + + return ret; +} + +static int wilc_sdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + struct wilc *wilc; + int ret; + struct gpio_desc *gpio =3D NULL; + struct wilc_sdio *sdio_priv; + + sdio_priv =3D kzalloc(sizeof(*sdio_priv), GFP_KERNEL); + if (!sdio_priv) + return -ENOMEM; + + if (IS_ENABLED(CONFIG_WILC1000_HW_OOB_INTR)) { + gpio =3D gpiod_get(&func->dev, "irq", GPIOD_IN); + if (IS_ERR(gpio)) { + /* get the GPIO descriptor from hardcode GPIO number */ + gpio =3D gpio_to_desc(GPIO_NUM); + if (!gpio) + dev_err(&func->dev, "failed to get irq gpio\n"); + } + } + + dev_dbg(&func->dev, "Initializing netdev\n"); + ret =3D wilc_netdev_init(&wilc, &func->dev, WILC_HIF_SDIO, + &wilc_hif_sdio); + if (ret) { + dev_err(&func->dev, "Couldn't initialize netdev\n"); + kfree(sdio_priv); + return ret; + } + sdio_set_drvdata(func, wilc); + wilc->bus_data =3D sdio_priv; + wilc->dev =3D &func->dev; + wilc->gpio_irq =3D gpio; + + dev_info(&func->dev, "Driver Initializing success\n"); + return 0; +} + +static void wilc_sdio_remove(struct sdio_func *func) +{ + struct wilc *wilc =3D sdio_get_drvdata(func); + + /* free the GPIO in module remove */ + if (wilc->gpio_irq) + gpiod_put(wilc->gpio_irq); + wilc_netdev_cleanup(wilc); +} + +static int wilc_sdio_reset(struct wilc *wilc) +{ + struct sdio_cmd52 cmd; + int ret; + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0x6; + cmd.data =3D 0x8; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Fail cmd 52, reset cmd ...\n"); + return ret; + } + return 0; +} + +static int wilc_sdio_suspend(struct device *dev) +{ + struct sdio_func *func =3D dev_to_sdio_func(dev); + struct wilc *wilc =3D sdio_get_drvdata(func); + int ret; + + dev_info(dev, "sdio suspend\n"); + chip_wakeup(wilc); + + if (!wilc->suspend_event) { + wilc_chip_sleep_manually(wilc); + } else { + host_sleep_notify(wilc); + chip_allow_sleep(wilc); + } + + ret =3D wilc_sdio_reset(wilc); + if (ret) { + dev_err(&func->dev, "Fail reset sdio\n"); + return ret; + } + sdio_claim_host(func); + + return 0; +} + +static int wilc_sdio_enable_interrupt(struct wilc *dev) +{ + struct sdio_func *func =3D container_of(dev->dev, struct sdio_func, dev); + int ret =3D 0; + + sdio_claim_host(func); + ret =3D sdio_claim_irq(func, wilc_sdio_interrupt); + sdio_release_host(func); + + if (ret < 0) { + dev_err(&func->dev, "can't claim sdio_irq, err(%d)\n", ret); + ret =3D -EIO; + } + return ret; +} + +static void wilc_sdio_disable_interrupt(struct wilc *dev) +{ + struct sdio_func *func =3D container_of(dev->dev, struct sdio_func, dev); + int ret; + + sdio_claim_host(func); + ret =3D sdio_release_irq(func); + if (ret < 0) + dev_err(&func->dev, "can't release sdio_irq, err(%d)\n", ret); + sdio_release_host(func); +} + +/******************************************** + * + * Function 0 + * + ********************************************/ + +static int wilc_sdio_set_func0_csa_address(struct wilc *wilc, u32 adr) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct sdio_cmd52 cmd; + int ret; + + /** + * Review: BIG ENDIAN + **/ + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0x10c; + cmd.data =3D (u8)adr; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x10c data...\n"); + goto fail; + } + + cmd.address =3D 0x10d; + cmd.data =3D (u8)(adr >> 8); + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x10d data...\n"); + goto fail; + } + + cmd.address =3D 0x10e; + cmd.data =3D (u8)(adr >> 16); + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x10e data...\n"); + goto fail; + } + + return 1; +fail: + return 0; +} + +static int wilc_sdio_set_func0_block_size(struct wilc *wilc, u32 block_siz= e) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct sdio_cmd52 cmd; + int ret; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0x10; + cmd.data =3D (u8)block_size; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x10 data...\n"); + goto fail; + } + + cmd.address =3D 0x11; + cmd.data =3D (u8)(block_size >> 8); + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x11 data...\n"); + goto fail; + } + + return 1; +fail: + return 0; +} + +/******************************************** + * + * Function 1 + * + ********************************************/ + +static int wilc_sdio_set_func1_block_size(struct wilc *wilc, u32 block_siz= e) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct sdio_cmd52 cmd; + int ret; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0x110; + cmd.data =3D (u8)block_size; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x110 data...\n"); + goto fail; + } + cmd.address =3D 0x111; + cmd.data =3D (u8)(block_size >> 8); + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Failed cmd52, set 0x111 data...\n"); + goto fail; + } + + return 1; +fail: + return 0; +} + +/******************************************** + * + * Sdio interfaces + * + ********************************************/ +static int wilc_sdio_write_reg(struct wilc *wilc, u32 addr, u32 data) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + int ret; + + cpu_to_le32s(&data); + + if (addr >=3D 0xf0 && addr <=3D 0xff) { + struct sdio_cmd52 cmd; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D addr; + cmd.data =3D data; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd 52, read reg (%08x) ...\n", addr); + goto fail; + } + } else { + struct sdio_cmd53 cmd; + + /** + * set the AHB address + **/ + if (!wilc_sdio_set_func0_csa_address(wilc, addr)) + goto fail; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.address =3D 0x10f; + cmd.block_mode =3D 0; + cmd.increment =3D 1; + cmd.count =3D 4; + cmd.buffer =3D (u8 *)&data; + cmd.block_size =3D sdio_priv->block_size; + ret =3D wilc_sdio_cmd53(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd53, write reg (%08x)...\n", addr); + goto fail; + } + } + + return 1; + +fail: + + return 0; +} + +static int wilc_sdio_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + u32 block_size =3D sdio_priv->block_size; + struct sdio_cmd53 cmd; + int nblk, nleft, ret; + + cmd.read_write =3D 1; + if (addr > 0) { + /** + * has to be word aligned... + **/ + if (size & 0x3) { + size +=3D 4; + size &=3D ~0x3; + } + + /** + * func 0 access + **/ + cmd.function =3D 0; + cmd.address =3D 0x10f; + } else { + /** + * has to be word aligned... + **/ + if (size & 0x3) { + size +=3D 4; + size &=3D ~0x3; + } + + /** + * func 1 access + **/ + cmd.function =3D 1; + cmd.address =3D 0; + } + + nblk =3D size / block_size; + nleft =3D size % block_size; + + if (nblk > 0) { + cmd.block_mode =3D 1; + cmd.increment =3D 1; + cmd.count =3D nblk; + cmd.buffer =3D buf; + cmd.block_size =3D block_size; + if (addr > 0) { + if (!wilc_sdio_set_func0_csa_address(wilc, addr)) + goto fail; + } + ret =3D wilc_sdio_cmd53(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd53 [%x], block send...\n", addr); + goto fail; + } + if (addr > 0) + addr +=3D nblk * block_size; + buf +=3D nblk * block_size; + } + + if (nleft > 0) { + cmd.block_mode =3D 0; + cmd.increment =3D 1; + cmd.count =3D nleft; + cmd.buffer =3D buf; + + cmd.block_size =3D block_size; + + if (addr > 0) { + if (!wilc_sdio_set_func0_csa_address(wilc, addr)) + goto fail; + } + ret =3D wilc_sdio_cmd53(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd53 [%x], bytes send...\n", addr); + goto fail; + } + } + + return 1; + +fail: + + return 0; +} + +static int wilc_sdio_read_reg(struct wilc *wilc, u32 addr, u32 *data) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + int ret; + + if (addr >=3D 0xf0 && addr <=3D 0xff) { + struct sdio_cmd52 cmd; + + cmd.read_write =3D 0; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D addr; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd 52, read reg (%08x) ...\n", addr); + goto fail; + } + *data =3D cmd.data; + } else { + struct sdio_cmd53 cmd; + + if (!wilc_sdio_set_func0_csa_address(wilc, addr)) + goto fail; + + cmd.read_write =3D 0; + cmd.function =3D 0; + cmd.address =3D 0x10f; + cmd.block_mode =3D 0; + cmd.increment =3D 1; + cmd.count =3D 4; + cmd.buffer =3D (u8 *)data; + + cmd.block_size =3D sdio_priv->block_size; + ret =3D wilc_sdio_cmd53(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd53, read reg (%08x)...\n", addr); + goto fail; + } + } + + le32_to_cpus(data); + + return 1; + +fail: + + return 0; +} + +static int wilc_sdio_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + u32 block_size =3D sdio_priv->block_size; + struct sdio_cmd53 cmd; + int nblk, nleft, ret; + + cmd.read_write =3D 0; + if (addr > 0) { + /** + * has to be word aligned... + **/ + if (size & 0x3) { + size +=3D 4; + size &=3D ~0x3; + } + + /** + * func 0 access + **/ + cmd.function =3D 0; + cmd.address =3D 0x10f; + } else { + /** + * has to be word aligned... + **/ + if (size & 0x3) { + size +=3D 4; + size &=3D ~0x3; + } + + /** + * func 1 access + **/ + cmd.function =3D 1; + cmd.address =3D 0; + } + + nblk =3D size / block_size; + nleft =3D size % block_size; + + if (nblk > 0) { + cmd.block_mode =3D 1; + cmd.increment =3D 1; + cmd.count =3D nblk; + cmd.buffer =3D buf; + cmd.block_size =3D block_size; + if (addr > 0) { + if (!wilc_sdio_set_func0_csa_address(wilc, addr)) + goto fail; + } + ret =3D wilc_sdio_cmd53(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd53 [%x], block read...\n", addr); + goto fail; + } + if (addr > 0) + addr +=3D nblk * block_size; + buf +=3D nblk * block_size; + } /* if (nblk > 0) */ + + if (nleft > 0) { + cmd.block_mode =3D 0; + cmd.increment =3D 1; + cmd.count =3D nleft; + cmd.buffer =3D buf; + + cmd.block_size =3D block_size; + + if (addr > 0) { + if (!wilc_sdio_set_func0_csa_address(wilc, addr)) + goto fail; + } + ret =3D wilc_sdio_cmd53(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd53 [%x], bytes read...\n", addr); + goto fail; + } + } + + return 1; + +fail: + + return 0; +} + +/******************************************** + * + * Bus interfaces + * + ********************************************/ + +static int wilc_sdio_deinit(struct wilc *wilc) +{ + return 1; +} + +static int wilc_sdio_init(struct wilc *wilc, bool resume) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + struct sdio_cmd52 cmd; + int loop, ret; + u32 chipid; + + if (!resume) + sdio_priv->irq_gpio =3D wilc->dev_irq_num; + + /** + * function 0 csa enable + **/ + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 1; + cmd.address =3D 0x100; + cmd.data =3D 0x80; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Fail cmd 52, enable csa...\n"); + goto fail; + } + + /** + * function 0 block size + **/ + if (!wilc_sdio_set_func0_block_size(wilc, WILC_SDIO_BLOCK_SIZE)) { + dev_err(&func->dev, "Fail cmd 52, set func 0 block size...\n"); + goto fail; + } + sdio_priv->block_size =3D WILC_SDIO_BLOCK_SIZE; + + /** + * enable func1 IO + **/ + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 1; + cmd.address =3D 0x2; + cmd.data =3D 0x2; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Fail cmd 52, set IOE register...\n"); + goto fail; + } + + /** + * make sure func 1 is up + **/ + cmd.read_write =3D 0; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0x3; + loop =3D 3; + do { + cmd.data =3D 0; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Fail cmd 52, get IOR register...\n"); + goto fail; + } + if (cmd.data =3D=3D 0x2) + break; + } while (loop--); + + if (loop <=3D 0) { + dev_err(&func->dev, "Fail func 1 is not ready...\n"); + goto fail; + } + + /** + * func 1 is ready, set func 1 block size + **/ + if (!wilc_sdio_set_func1_block_size(wilc, WILC_SDIO_BLOCK_SIZE)) { + dev_err(&func->dev, "Fail set func 1 block size...\n"); + goto fail; + } + + /** + * func 1 interrupt enable + **/ + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 1; + cmd.address =3D 0x4; + cmd.data =3D 0x3; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, "Fail cmd 52, set IEN register...\n"); + goto fail; + } + + /** + * make sure can read back chip id correctly + **/ + if (!resume) { + if (!wilc_sdio_read_reg(wilc, 0x1000, &chipid)) { + dev_err(&func->dev, "Fail cmd read chip id...\n"); + goto fail; + } + dev_err(&func->dev, "chipid (%08x)\n", chipid); + if ((chipid & 0xfff) > 0x2a0) + sdio_priv->has_thrpt_enh3 =3D 1; + else + sdio_priv->has_thrpt_enh3 =3D 0; + dev_info(&func->dev, "has_thrpt_enh3 =3D %d...\n", + sdio_priv->has_thrpt_enh3); + } + + return 1; + +fail: + + return 0; +} + +static int wilc_sdio_read_size(struct wilc *wilc, u32 *size) +{ + u32 tmp; + struct sdio_cmd52 cmd; + + /** + * Read DMA count in words + **/ + cmd.read_write =3D 0; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0xf2; + cmd.data =3D 0; + wilc_sdio_cmd52(wilc, &cmd); + tmp =3D cmd.data; + + cmd.address =3D 0xf3; + cmd.data =3D 0; + wilc_sdio_cmd52(wilc, &cmd); + tmp |=3D (cmd.data << 8); + + *size =3D tmp; + return 1; +} + +static int wilc_sdio_read_int(struct wilc *wilc, u32 *int_status) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + u32 tmp; + struct sdio_cmd52 cmd; + + wilc_sdio_read_size(wilc, &tmp); + + /** + * Read IRQ flags + **/ + if (!sdio_priv->irq_gpio) { + int i; + + cmd.read_write =3D 0; + cmd.function =3D 1; + cmd.address =3D 0x04; + cmd.data =3D 0; + wilc_sdio_cmd52(wilc, &cmd); + + if (cmd.data & BIT(0)) + tmp |=3D INT_0; + if (cmd.data & BIT(2)) + tmp |=3D INT_1; + if (cmd.data & BIT(3)) + tmp |=3D INT_2; + if (cmd.data & BIT(4)) + tmp |=3D INT_3; + if (cmd.data & BIT(5)) + tmp |=3D INT_4; + if (cmd.data & BIT(6)) + tmp |=3D INT_5; + for (i =3D sdio_priv->nint; i < MAX_NUM_INT; i++) { + if ((tmp >> (IRG_FLAGS_OFFSET + i)) & 0x1) { + dev_err(&func->dev, + "Unexpected interrupt (1) : tmp=3D%x, data=3D%x\n", + tmp, cmd.data); + break; + } + } + } else { + u32 irq_flags; + + cmd.read_write =3D 0; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0xf7; + cmd.data =3D 0; + wilc_sdio_cmd52(wilc, &cmd); + irq_flags =3D cmd.data & 0x1f; + tmp |=3D ((irq_flags >> 0) << IRG_FLAGS_OFFSET); + } + + *int_status =3D tmp; + + return 1; +} + +static int wilc_sdio_clear_int_ext(struct wilc *wilc, u32 val) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + int ret; + int vmm_ctl; + + if (sdio_priv->has_thrpt_enh3) { + u32 reg; + + if (sdio_priv->irq_gpio) { + u32 flags; + + flags =3D val & (BIT(MAX_NUN_INT_THRPT_ENH2) - 1); + reg =3D flags; + } else { + reg =3D 0; + } + /* select VMM table 0 */ + if (val & SEL_VMM_TBL0) + reg |=3D BIT(5); + /* select VMM table 1 */ + if (val & SEL_VMM_TBL1) + reg |=3D BIT(6); + /* enable VMM */ + if (val & EN_VMM) + reg |=3D BIT(7); + if (reg) { + struct sdio_cmd52 cmd; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0xf8; + cmd.data =3D reg; + + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd52, set 0xf8 data (%d) ...\n", + __LINE__); + goto fail; + } + } + return 1; + } + if (sdio_priv->irq_gpio) { + /* has_thrpt_enh2 uses register 0xf8 to clear interrupts. */ + /* + * Cannot clear multiple interrupts. + * Must clear each interrupt individually. + */ + u32 flags; + + flags =3D val & (BIT(MAX_NUM_INT) - 1); + if (flags) { + int i; + + ret =3D 1; + for (i =3D 0; i < sdio_priv->nint; i++) { + if (flags & 1) { + struct sdio_cmd52 cmd; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0xf8; + cmd.data =3D BIT(i); + + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd52, set 0xf8 data (%d) ...\n", + __LINE__); + goto fail; + } + } + if (!ret) + break; + flags >>=3D 1; + } + if (!ret) + goto fail; + for (i =3D sdio_priv->nint; i < MAX_NUM_INT; i++) { + if (flags & 1) + dev_err(&func->dev, + "Unexpected interrupt cleared %d...\n", + i); + flags >>=3D 1; + } + } + } + + vmm_ctl =3D 0; + /* select VMM table 0 */ + if (val & SEL_VMM_TBL0) + vmm_ctl |=3D BIT(0); + /* select VMM table 1 */ + if (val & SEL_VMM_TBL1) + vmm_ctl |=3D BIT(1); + /* enable VMM */ + if (val & EN_VMM) + vmm_ctl |=3D BIT(2); + + if (vmm_ctl) { + struct sdio_cmd52 cmd; + + cmd.read_write =3D 1; + cmd.function =3D 0; + cmd.raw =3D 0; + cmd.address =3D 0xf6; + cmd.data =3D vmm_ctl; + ret =3D wilc_sdio_cmd52(wilc, &cmd); + if (ret) { + dev_err(&func->dev, + "Failed cmd52, set 0xf6 data (%d) ...\n", + __LINE__); + goto fail; + } + } + return 1; +fail: + return 0; +} + +static int wilc_sdio_sync_ext(struct wilc *wilc, int nint) +{ + struct sdio_func *func =3D dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv =3D wilc->bus_data; + u32 reg; + + if (nint > MAX_NUM_INT) { + dev_err(&func->dev, "Too many interrupts (%d)...\n", nint); + return 0; + } + if (nint > MAX_NUN_INT_THRPT_ENH2) { + dev_err(&func->dev, + "Cannot support more than 5 interrupts when has_thrpt_enh2=3D1.\n"); + return 0; + } + + sdio_priv->nint =3D nint; + + /** + * Disable power sequencer + **/ + if (!wilc_sdio_read_reg(wilc, WILC_MISC, ®)) { + dev_err(&func->dev, "Failed read misc reg...\n"); + return 0; + } + + reg &=3D ~BIT(8); + if (!wilc_sdio_write_reg(wilc, WILC_MISC, reg)) { + dev_err(&func->dev, "Failed write misc reg...\n"); + return 0; + } + + if (sdio_priv->irq_gpio) { + u32 reg; + int ret, i; + + /** + * interrupt pin mux select + **/ + ret =3D wilc_sdio_read_reg(wilc, WILC_PIN_MUX_0, ®); + if (!ret) { + dev_err(&func->dev, "Failed read reg (%08x)...\n", + WILC_PIN_MUX_0); + return 0; + } + reg |=3D BIT(8); + ret =3D wilc_sdio_write_reg(wilc, WILC_PIN_MUX_0, reg); + if (!ret) { + dev_err(&func->dev, "Failed write reg (%08x)...\n", + WILC_PIN_MUX_0); + return 0; + } + + /** + * interrupt enable + **/ + ret =3D wilc_sdio_read_reg(wilc, WILC_INTR_ENABLE, ®); + if (!ret) { + dev_err(&func->dev, "Failed read reg (%08x)...\n", + WILC_INTR_ENABLE); + return 0; + } + + for (i =3D 0; (i < 5) && (nint > 0); i++, nint--) + reg |=3D BIT((27 + i)); + ret =3D wilc_sdio_write_reg(wilc, WILC_INTR_ENABLE, reg); + if (!ret) { + dev_err(&func->dev, "Failed write reg (%08x)...\n", + WILC_INTR_ENABLE); + return 0; + } + if (nint) { + ret =3D wilc_sdio_read_reg(wilc, WILC_INTR2_ENABLE, ®); + if (!ret) { + dev_err(&func->dev, + "Failed read reg (%08x)...\n", + WILC_INTR2_ENABLE); + return 0; + } + + for (i =3D 0; (i < 3) && (nint > 0); i++, nint--) + reg |=3D BIT(i); + + ret =3D wilc_sdio_read_reg(wilc, WILC_INTR2_ENABLE, ®); + if (!ret) { + dev_err(&func->dev, + "Failed write reg (%08x)...\n", + WILC_INTR2_ENABLE); + return 0; + } + } + } + return 1; +} + +/* Global sdio HIF function table */ +static const struct wilc_hif_func wilc_hif_sdio =3D { + .hif_init =3D wilc_sdio_init, + .hif_deinit =3D wilc_sdio_deinit, + .hif_read_reg =3D wilc_sdio_read_reg, + .hif_write_reg =3D wilc_sdio_write_reg, + .hif_block_rx =3D wilc_sdio_read, + .hif_block_tx =3D wilc_sdio_write, + .hif_read_int =3D wilc_sdio_read_int, + .hif_clear_int_ext =3D wilc_sdio_clear_int_ext, + .hif_read_size =3D wilc_sdio_read_size, + .hif_block_tx_ext =3D wilc_sdio_write, + .hif_block_rx_ext =3D wilc_sdio_read, + .hif_sync_ext =3D wilc_sdio_sync_ext, + .enable_interrupt =3D wilc_sdio_enable_interrupt, + .disable_interrupt =3D wilc_sdio_disable_interrupt, +}; + +static int wilc_sdio_resume(struct device *dev) +{ + struct sdio_func *func =3D dev_to_sdio_func(dev); + struct wilc *wilc =3D sdio_get_drvdata(func); + + dev_info(dev, "sdio resume\n"); + sdio_release_host(func); + chip_wakeup(wilc); + wilc_sdio_init(wilc, true); + + if (wilc->suspend_event) + host_wakeup_notify(wilc); + + chip_allow_sleep(wilc); + + return 0; +} + +static const struct of_device_id wilc_of_match[] =3D { + { .compatible =3D "microchip,wilc1000-sdio", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, wilc_of_match); + +static const struct dev_pm_ops wilc_sdio_pm_ops =3D { + .suspend =3D wilc_sdio_suspend, + .resume =3D wilc_sdio_resume, +}; + +static struct sdio_driver wilc_sdio_driver =3D { + .name =3D SDIO_MODALIAS, + .id_table =3D wilc_sdio_ids, + .probe =3D wilc_sdio_probe, + .remove =3D wilc_sdio_remove, + .drv =3D { + .pm =3D &wilc_sdio_pm_ops, + .of_match_table =3D wilc_of_match, + } +}; +module_driver(wilc_sdio_driver, + sdio_register_driver, + sdio_unregister_driver); +MODULE_LICENSE("GPL"); --=20 2.7.4