From 7c4ca79f4969a5c5ffcf31a3ba01453821669ced Mon Sep 17 00:00:00 2001 From: Uri Shkolnik Date: Tue, 19 May 2009 11:49:19 -0300 Subject: V4L/DVB (11885): Siano: Add new GPIO management interface Add new GPIO management interface to replace old (buggy) one. Keeping old interface intact for now. Signed-off-by: Uri Shkolnik Acked-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/siano/smscoreapi.c | 235 ++++++++++++++++++++++++++++++++++- 1 file changed, 234 insertions(+), 1 deletion(-) (limited to 'drivers/media/dvb/siano/smscoreapi.c') diff --git a/drivers/media/dvb/siano/smscoreapi.c b/drivers/media/dvb/siano/smscoreapi.c index 00a1053..043368a 100644 --- a/drivers/media/dvb/siano/smscoreapi.c +++ b/drivers/media/dvb/siano/smscoreapi.c @@ -1276,8 +1276,9 @@ int smsclient_sendrequest(struct smscore_client_t *client, EXPORT_SYMBOL_GPL(smsclient_sendrequest); +/* old GPIO managments implementation */ int smscore_configure_gpio(struct smscore_device_t *coredev, u32 pin, - struct smscore_gpio_config *pinconfig) + struct smscore_config_gpio *pinconfig) { struct { struct SmsMsgHdr_ST hdr; @@ -1346,6 +1347,238 @@ int smscore_set_gpio(struct smscore_device_t *coredev, u32 pin, int level) &msg, sizeof(msg)); } +/* new GPIO managment implementation */ +static int GetGpioPinParams(u32 PinNum, u32 *pTranslatedPinNum, + u32 *pGroupNum, u32 *pGroupCfg) { + + *pGroupCfg = 1; + + if (PinNum >= 0 && PinNum <= 1) { + *pTranslatedPinNum = 0; + *pGroupNum = 9; + *pGroupCfg = 2; + } else if (PinNum >= 2 && PinNum <= 6) { + *pTranslatedPinNum = 2; + *pGroupNum = 0; + *pGroupCfg = 2; + } else if (PinNum >= 7 && PinNum <= 11) { + *pTranslatedPinNum = 7; + *pGroupNum = 1; + } else if (PinNum >= 12 && PinNum <= 15) { + *pTranslatedPinNum = 12; + *pGroupNum = 2; + *pGroupCfg = 3; + } else if (PinNum == 16) { + *pTranslatedPinNum = 16; + *pGroupNum = 23; + } else if (PinNum >= 17 && PinNum <= 24) { + *pTranslatedPinNum = 17; + *pGroupNum = 3; + } else if (PinNum == 25) { + *pTranslatedPinNum = 25; + *pGroupNum = 6; + } else if (PinNum >= 26 && PinNum <= 28) { + *pTranslatedPinNum = 26; + *pGroupNum = 4; + } else if (PinNum == 29) { + *pTranslatedPinNum = 29; + *pGroupNum = 5; + *pGroupCfg = 2; + } else if (PinNum == 30) { + *pTranslatedPinNum = 30; + *pGroupNum = 8; + } else if (PinNum == 31) { + *pTranslatedPinNum = 31; + *pGroupNum = 17; + } else + return -1; + + *pGroupCfg <<= 24; + + return 0; +} + +int smscore_gpio_configure(struct smscore_device_t *coredev, u8 PinNum, + struct smscore_gpio_config *pGpioConfig) { + + u32 totalLen; + u32 TranslatedPinNum; + u32 GroupNum; + u32 ElectricChar; + u32 groupCfg; + void *buffer; + int rc; + + struct SetGpioMsg { + struct SmsMsgHdr_ST xMsgHeader; + u32 msgData[6]; + } *pMsg; + + + if (PinNum > MAX_GPIO_PIN_NUMBER) + return -EINVAL; + + if (pGpioConfig == NULL) + return -EINVAL; + + totalLen = sizeof(struct SmsMsgHdr_ST) + (sizeof(u32) * 6); + + buffer = kmalloc(totalLen + SMS_DMA_ALIGNMENT, + GFP_KERNEL | GFP_DMA); + if (!buffer) + return -ENOMEM; + + pMsg = (struct SetGpioMsg *) SMS_ALIGN_ADDRESS(buffer); + + pMsg->xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID; + pMsg->xMsgHeader.msgDstId = HIF_TASK; + pMsg->xMsgHeader.msgFlags = 0; + pMsg->xMsgHeader.msgLength = (u16) totalLen; + pMsg->msgData[0] = PinNum; + + if (!(coredev->device_flags & SMS_DEVICE_FAMILY2)) { + pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_CONFIG_REQ; + if (GetGpioPinParams(PinNum, &TranslatedPinNum, &GroupNum, + &groupCfg) != 0) + return -EINVAL; + + pMsg->msgData[1] = TranslatedPinNum; + pMsg->msgData[2] = GroupNum; + ElectricChar = (pGpioConfig->PullUpDown) + | (pGpioConfig->InputCharacteristics << 2) + | (pGpioConfig->OutputSlewRate << 3) + | (pGpioConfig->OutputDriving << 4); + pMsg->msgData[3] = ElectricChar; + pMsg->msgData[4] = pGpioConfig->Direction; + pMsg->msgData[5] = groupCfg; + } else { + pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_CONFIG_EX_REQ; + pMsg->msgData[1] = pGpioConfig->PullUpDown; + pMsg->msgData[2] = pGpioConfig->OutputSlewRate; + pMsg->msgData[3] = pGpioConfig->OutputDriving; + pMsg->msgData[4] = pGpioConfig->Direction; + pMsg->msgData[5] = 0; + } + + smsendian_handle_tx_message((struct SmsMsgHdr_ST *)pMsg); + rc = smscore_sendrequest_and_wait(coredev, pMsg, totalLen, + &coredev->gpio_configuration_done); + + if (rc != 0) { + if (rc == -ETIME) + sms_err("smscore_gpio_configure timeout"); + else + sms_err("smscore_gpio_configure error"); + } + kfree(buffer); + + return rc; +} + +int smscore_gpio_set_level(struct smscore_device_t *coredev, u8 PinNum, + u8 NewLevel) { + + u32 totalLen; + int rc; + void *buffer; + + struct SetGpioMsg { + struct SmsMsgHdr_ST xMsgHeader; + u32 msgData[3]; /* keep it 3 ! */ + } *pMsg; + + if ((NewLevel > 1) || (PinNum > MAX_GPIO_PIN_NUMBER) || + (PinNum > MAX_GPIO_PIN_NUMBER)) + return -EINVAL; + + totalLen = sizeof(struct SmsMsgHdr_ST) + + (3 * sizeof(u32)); /* keep it 3 ! */ + + buffer = kmalloc(totalLen + SMS_DMA_ALIGNMENT, + GFP_KERNEL | GFP_DMA); + if (!buffer) + return -ENOMEM; + + pMsg = (struct SetGpioMsg *) SMS_ALIGN_ADDRESS(buffer); + + pMsg->xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID; + pMsg->xMsgHeader.msgDstId = HIF_TASK; + pMsg->xMsgHeader.msgFlags = 0; + pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_SET_LEVEL_REQ; + pMsg->xMsgHeader.msgLength = (u16) totalLen; + pMsg->msgData[0] = PinNum; + pMsg->msgData[1] = NewLevel; + + /* Send message to SMS */ + smsendian_handle_tx_message((struct SmsMsgHdr_ST *)pMsg); + rc = smscore_sendrequest_and_wait(coredev, pMsg, totalLen, + &coredev->gpio_set_level_done); + + if (rc != 0) { + if (rc == -ETIME) + sms_err("smscore_gpio_set_level timeout"); + else + sms_err("smscore_gpio_set_level error"); + } + kfree(buffer); + + return rc; +} + +int smscore_gpio_get_level(struct smscore_device_t *coredev, u8 PinNum, + u8 *level) { + + u32 totalLen; + int rc; + void *buffer; + + struct SetGpioMsg { + struct SmsMsgHdr_ST xMsgHeader; + u32 msgData[2]; + } *pMsg; + + + if (PinNum > MAX_GPIO_PIN_NUMBER) + return -EINVAL; + + totalLen = sizeof(struct SmsMsgHdr_ST) + (2 * sizeof(u32)); + + buffer = kmalloc(totalLen + SMS_DMA_ALIGNMENT, + GFP_KERNEL | GFP_DMA); + if (!buffer) + return -ENOMEM; + + pMsg = (struct SetGpioMsg *) SMS_ALIGN_ADDRESS(buffer); + + pMsg->xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID; + pMsg->xMsgHeader.msgDstId = HIF_TASK; + pMsg->xMsgHeader.msgFlags = 0; + pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_GET_LEVEL_REQ; + pMsg->xMsgHeader.msgLength = (u16) totalLen; + pMsg->msgData[0] = PinNum; + pMsg->msgData[1] = 0; + + /* Send message to SMS */ + smsendian_handle_tx_message((struct SmsMsgHdr_ST *)pMsg); + rc = smscore_sendrequest_and_wait(coredev, pMsg, totalLen, + &coredev->gpio_get_level_done); + + if (rc != 0) { + if (rc == -ETIME) + sms_err("smscore_gpio_get_level timeout"); + else + sms_err("smscore_gpio_get_level error"); + } + kfree(buffer); + + /* Its a race between other gpio_get_level() and the copy of the single + * global 'coredev->gpio_get_res' to the function's variable 'level' + */ + *level = coredev->gpio_get_res; + + return rc; +} + static int __init smscore_module_init(void) { int rc = 0; -- cgit v1.1