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 <uris@siano-ms.com>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 288 insertions, 4 deletions

diff --git a/drivers/media/dvb/siano/sms-cards.c b/drivers/media/dvb/siano/sms-cards.c
index 1a1890680349..370cf513a81a 100644
--- a/drivers/media/dvb/siano/sms-cards.c
+++ b/drivers/media/dvb/siano/sms-cards.c
@@ -109,7 +109,7 @@ static int sms_set_gpio(struct smscore_device_t *coredev, int pin, int enable)
 {
         int lvl, ret;
         u32 gpio;
-        struct smscore_gpio_config gpioconfig = {
+        struct smscore_config_gpio gpioconfig = {
                 .direction            = SMS_GPIO_DIRECTION_OUTPUT,
                 .pullupdown           = SMS_GPIO_PULLUPDOWN_NONE,
                 .inputcharacteristics = SMS_GPIO_INPUTCHARACTERISTICS_NORMAL,
diff --git a/drivers/media/dvb/siano/smscoreapi.c b/drivers/media/dvb/siano/smscoreapi.c
index 00a1053e5f98..043368a03133 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;
diff --git a/drivers/media/dvb/siano/smscoreapi.h b/drivers/media/dvb/siano/smscoreapi.h
index 6e23c5f68088..03bdc94950fe 100644
--- a/drivers/media/dvb/siano/smscoreapi.h
+++ b/drivers/media/dvb/siano/smscoreapi.h
@@ -549,7 +549,7 @@ struct SMSHOSTLIB_I2C_RES_ST {
 };
 
 
-struct smscore_gpio_config {
+struct smscore_config_gpio {
 #define SMS_GPIO_DIRECTION_INPUT  0
 #define SMS_GPIO_DIRECTION_OUTPUT 1
         u8 direction;
@@ -575,6 +575,48 @@ struct smscore_gpio_config {
         u8 outputdriving;
 };
 
+struct smscore_gpio_config {
+#define SMS_GPIO_DIRECTION_INPUT  0
+#define SMS_GPIO_DIRECTION_OUTPUT 1
+        u8 Direction;
+
+#define SMS_GPIO_PULLUPDOWN_NONE     0
+#define SMS_GPIO_PULLUPDOWN_PULLDOWN 1
+#define SMS_GPIO_PULLUPDOWN_PULLUP   2
+#define SMS_GPIO_PULLUPDOWN_KEEPER   3
+        u8 PullUpDown;
+
+#define SMS_GPIO_INPUT_CHARACTERISTICS_NORMAL  0
+#define SMS_GPIO_INPUT_CHARACTERISTICS_SCHMITT 1
+        u8 InputCharacteristics;
+
+#define SMS_GPIO_OUTPUT_SLEW_RATE_SLOW          1 /* 10xx */
+#define SMS_GPIO_OUTPUT_SLEW_RATE_FAST          0 /* 10xx */
+
+
+#define SMS_GPIO_OUTPUT_SLEW_RATE_0_45_V_NS     0 /* 11xx */
+#define SMS_GPIO_OUTPUT_SLEW_RATE_0_9_V_NS      1 /* 11xx */
+#define SMS_GPIO_OUTPUT_SLEW_RATE_1_7_V_NS      2 /* 11xx */
+#define SMS_GPIO_OUTPUT_SLEW_RATE_3_3_V_NS      3 /* 11xx */
+        u8 OutputSlewRate;
+
+#define SMS_GPIO_OUTPUT_DRIVING_S_4mA           0 /* 10xx */
+#define SMS_GPIO_OUTPUT_DRIVING_S_8mA           1 /* 10xx */
+#define SMS_GPIO_OUTPUT_DRIVING_S_12mA          2 /* 10xx */
+#define SMS_GPIO_OUTPUT_DRIVING_S_16mA          3 /* 10xx */
+
+#define SMS_GPIO_OUTPUT_DRIVING_1_5mA           0 /* 11xx */
+#define SMS_GPIO_OUTPUT_DRIVING_2_8mA           1 /* 11xx */
+#define SMS_GPIO_OUTPUT_DRIVING_4mA                     2 /* 11xx */
+#define SMS_GPIO_OUTPUT_DRIVING_7mA                     3 /* 11xx */
+#define SMS_GPIO_OUTPUT_DRIVING_10mA                    4 /* 11xx */
+#define SMS_GPIO_OUTPUT_DRIVING_11mA                    5 /* 11xx */
+#define SMS_GPIO_OUTPUT_DRIVING_14mA                    6 /* 11xx */
+#undef SMS_GPIO_OUTPUT_DRIVING_16mA
+#define SMS_GPIO_OUTPUT_DRIVING_16mA                    7 /* 11xx */
+        u8 OutputDriving;
+};
+
 extern void smscore_registry_setmode(char *devpath, int mode);
 extern int smscore_registry_getmode(char *devpath);
 
@@ -616,10 +658,19 @@ struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev);
 extern void smscore_putbuffer(struct smscore_device_t *coredev,
                               struct smscore_buffer_t *cb);
 
+/* old GPIO managment */
 int smscore_configure_gpio(struct smscore_device_t *coredev, u32 pin,
-                           struct smscore_gpio_config *pinconfig);
+                           struct smscore_config_gpio *pinconfig);
 int smscore_set_gpio(struct smscore_device_t *coredev, u32 pin, int level);
 
+/* new GPIO managment */
+extern int smscore_gpio_configure(struct smscore_device_t *coredev, u8 PinNum,
+                struct smscore_gpio_config *pGpioConfig);
+extern int smscore_gpio_set_level(struct smscore_device_t *coredev, u8 PinNum,
+                u8 NewLevel);
+extern int smscore_gpio_get_level(struct smscore_device_t *coredev, u8 PinNum,
+                u8 *level);
+
 void smscore_set_board_id(struct smscore_device_t *core, int id);
 int smscore_get_board_id(struct smscore_device_t *core);