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Diffstat (limited to 'target/linux/realtek/files/drivers/serial/gpio_8972b.c')
-rw-r--r--target/linux/realtek/files/drivers/serial/gpio_8972b.c526
1 files changed, 526 insertions, 0 deletions
diff --git a/target/linux/realtek/files/drivers/serial/gpio_8972b.c b/target/linux/realtek/files/drivers/serial/gpio_8972b.c
new file mode 100644
index 000000000..f52669d26
--- /dev/null
+++ b/target/linux/realtek/files/drivers/serial/gpio_8972b.c
@@ -0,0 +1,526 @@
+/*
+* Copyright c Realtek Semiconductor Corporation, 2008
+* All rights reserved.
+*
+* Program : GPIO Driver
+* Abstract :
+* Author :
+*/
+
+#ifndef __BOOTCODE__
+#include <linux/kernel.h>
+#endif
+#include "gpio.h"
+
+/*==================== FOR RTL8972B Family ==================*/
+
+#ifdef CONFIG_RTK_VOIP_DRIVERS_PCM8972B_FAMILY
+
+enum GPIO_FUNC
+{
+ GPIO_FUNC_DEDICATE,
+
+ GPIO_FUNC_DIRECTION,
+ GPIO_FUNC_DATA,
+ GPIO_FUNC_INTERRUPT_STATUS,
+ GPIO_FUNC_INTERRUPT_ENABLE,
+ GPIO_FUNC_MAX,
+};
+
+//******************************************* GPIO control
+static uint32 regGpioControl[] =
+{
+ GPABCDCNR, /* Port A */
+ GPABCDCNR, /* Port B */
+ GPABCDCNR, /* Port C */
+ GPABCDCNR, /* Port D */
+ GPEFGHCNR, /* Port E */
+ GPEFGHCNR, /* Port F */
+ GPEFGHCNR, /* Port G */
+ GPEFGHCNR, /* Port H */
+};
+
+static uint32 bitStartGpioControl[] =
+{
+ 0, /* Port A */
+ 8, /* Port B */
+ 16, /* Port C */
+ 24, /* Port D */
+ 0, /* Port E */
+ 8, /* Port F */
+ 16, /* Port G */
+ 24, /* Port H */
+};
+
+//******************************************* GPIO Share pin config
+#if 0
+static uint32 GpioShare_data[] =
+{
+ 0xFF1F0FFF,
+ 0x0000007f,
+};
+#endif
+#define SHAREPIN_REGISTER 0xB8000040
+
+#define SET_BIT(x) (1<<x)
+static uint32 GpioShare_setting[] =
+ {
+ 0x00000000, /* Port A0 */
+ 0x00000000, /* Port A1 */
+ 0x00000000, /* Port A2 */
+ (SET_BIT(21)|SET_BIT(20)), /* Port A3 */
+ (SET_BIT(21)|SET_BIT(20)), /* Port A4 */
+ (SET_BIT(21)|SET_BIT(20)), /* Port A5 */
+ (SET_BIT(21)|SET_BIT(20)), /* Port A6 */
+ 0x00000000, /* Port A7 */
+ 0x00000000, /* Port B0 */
+ 0x00000000, /* Port B1 */
+ 0x00000000, /* Port B2 */
+ 0x00000000, /* Port B3 */
+ 0x00000000, /* Port B4 */
+ 0x00000000, /* Port B5 */
+ 0x00000000, /* Port B6 */
+ 0x00000000, /* Port B7 */
+ 0x00000000, /* Port C0 */
+ 0x00000000, /* Port C1 */
+ 0x00000000, /* Port C2 */
+ 0x00000000, /* Port C3 */
+ 0x00000000, /* Port C4 */
+ 0x00000000, /* Port C5 */
+ 0x00000000, /* Port C6 */
+ 0x00000000, /* Port C7 */
+ 0x00000000, /* Port D0 */
+ 0x00000000, /* Port D1 */
+ 0x00000000, /* Port D2 */
+ 0x00000000, /* Port D3 */
+ 0x00000000, /* Port D4 */
+ 0x00000000, /* Port D5 */
+ 0x00000000, /* Port D6 */
+ 0x00000000, /* Port D7 */
+ 0x00000000, /* Port E0 */
+ 0x00000000, /* Port E1 */
+ 0x00000000, /* Port E2 */
+ 0x00000000, /* Port E3 */
+ 0x00000000, /* Port E4 */
+ 0x00000000, /* Port E5 */
+ 0x00000000, /* Port E6 */
+ 0x00000000, /* Port E7 */
+ 0x00000000, /* Port F0 */
+ 0x00000000, /* Port F1 */
+ 0x00000000, /* Port F2 */
+ 0x00000000, /* Port F3 */
+ 0x00000000, /* Port F4 */
+ 0x00000000, /* Port F5 */
+ 0x00000000, /* Port F6 */
+ 0x00000000, /* Port F7 */
+ 0x00000000, /* Port G0 */
+ 0x00000000, /* Port G1 */
+ 0x00000000, /* Port G2 */
+ 0x00000000, /* Port G3 */
+ 0x00000000, /* Port G4 */
+ 0x00000000, /* Port G5 */
+ 0x00000000, /* Port G6 */
+ 0x00000000, /* Port G7 */
+ 0x00000000, /* Port H0 */
+ 0x00000000, /* Port H1 */
+ 0x00000000, /* Port H2 */
+ 0x00000000, /* Port H3 */
+ 0x00000000, /* Port H4 */
+ 0x00000000, /* Port H5 */
+ 0x00000000, /* Port H6 */
+ 0x00000000, /* Port H7 */
+ };
+#if 0
+{
+ (SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A0 */
+ (SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A1 */
+ (SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A2 */
+ (SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A3 */
+ (SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A4 */
+ (SET_BIT(6)|SET_BIT(5)), /* Port A5 */
+ (SET_BIT(6)|SET_BIT(5)), /* Port A6 */
+ (SET_BIT(3)|SET_BIT(2)), /* Port A7 */
+ (SET_BIT(11)|SET_BIT(10)), /* Port B0 */
+ (SET_BIT(13)|SET_BIT(12)), /* Port B1 */
+ (SET_BIT(15)|SET_BIT(14)), /* Port B2 */
+ (SET_BIT(17)|SET_BIT(16)), /* Port B3 */
+ 0x00000000, /* Port B4 */
+ 0x00000000, /* Port B5 */
+ 0x00000000, /* Port B6 */
+ 0x00000000, /* Port B7 */
+ (SET_BIT(19)|SET_BIT(18)), /* Port C0 */
+ (SET_BIT(21)|SET_BIT(20)), /* Port C1 */
+ (SET_BIT(23)|SET_BIT(22)), /* Port C2 */
+ (SET_BIT(25)|SET_BIT(24)), /* Port C3 */
+ (SET_BIT(27)|SET_BIT(26)), /* Port C4 */
+ 0x00000000, /* Port C5 */
+ 0x00000000, /* Port C6 */
+ 0x00000000, /* Port C7 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D0 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D1 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D2 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D3 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D4 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D5 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D6 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port D7 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E0 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E1 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E2 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E3 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E4 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E5 */
+ (SET_BIT(1)|SET_BIT(0)), /* Port E6 */
+ 0x00000000, /* Port E7 */
+ 0x00000000, /* Port F0 */
+ 0x00000000, /* Port F1 */
+ 0x00000000, /* Port F2 */
+ 0x00000000, /* Port F3 */
+ 0x00000000, /* Port F4 */
+ 0x00000000, /* Port F5 */
+ 0x00000000, /* Port F6 */
+ 0x00000000, /* Port F7 */
+ 0x00000000, /* Port G0 */
+ 0x00000000, /* Port G1 */
+ 0x00000000, /* Port G2 */
+ 0x00000000, /* Port G3 */
+ 0x00000000, /* Port G4 */
+ 0x00000000, /* Port G5 */
+ 0x00000000, /* Port G6 */
+ 0x00000000, /* Port G7 */
+ 0x00000000, /* Port H0 */
+ 0x00000000, /* Port H1 */
+ 0x00000000, /* Port H2 */
+ 0x00000000, /* Port H3 */
+ 0x00000000, /* Port H4 */
+ 0x00000000, /* Port H5 */
+ 0x00000000, /* Port H6 */
+ 0x00000000, /* Port H7 */
+};
+#endif
+#undef SET_BIT
+
+//******************************************* Direction
+static uint32 regGpioDirection[] =
+{
+ GPABCDDIR, /* Port A */
+ GPABCDDIR, /* Port B */
+ GPABCDDIR, /* Port C */
+ GPABCDDIR, /* Port D */
+ GPEFGHDIR, /* Port E */
+ GPEFGHDIR, /* Port F */
+ GPEFGHDIR, /* Port G */
+ GPEFGHDIR, /* Port H */
+};
+
+static uint32 bitStartGpioDirection[] =
+{
+ 0, /* Port A */
+ 8, /* Port B */
+ 16, /* Port C */
+ 24, /* Port D */
+ 0, /* Port E */
+ 8, /* Port F */
+ 16, /* Port G */
+ 24, /* Port H */
+};
+
+//******************************************* Data
+static uint32 regGpioData[] =
+{
+ GPABCDDATA, /* Port A */
+ GPABCDDATA, /* Port B */
+ GPABCDDATA, /* Port C */
+ GPABCDDATA, /* Port D */
+ GPEFGHDATA, /* Port E */
+ GPEFGHDATA, /* Port F */
+ GPEFGHDATA, /* Port G */
+ GPEFGHDATA, /* Port H */
+ GPEFGHDATA, /* Port I */
+};
+
+static uint32 bitStartGpioData[] =
+{
+ 0, /* Port A */
+ 8, /* Port B */
+ 16, /* Port C */
+ 24, /* Port D */
+ 0, /* Port E */
+ 8, /* Port F */
+ 16, /* Port G */
+ 24, /* Port H */
+};
+
+//******************************************* ISR
+static uint32 regGpioInterruptStatus[] =
+{
+ GPABCDISR, /* Port A */
+ GPABCDISR, /* Port B */
+ GPABCDISR, /* Port C */
+ GPABCDISR, /* Port D */
+ GPEFGHISR, /* Port E */
+ GPEFGHISR, /* Port F */
+ GPEFGHISR, /* Port G */
+ GPEFGHISR, /* Port H */
+};
+
+static uint32 bitStartGpioInterruptStatus[] =
+{
+ 0, /* Port A */
+ 8, /* Port B */
+ 16, /* Port C */
+ 24, /* Port D */
+ 0, /* Port E */
+ 8, /* Port F */
+ 16, /* Port G */
+ 24, /* Port H */
+};
+
+//******************************************* IMR
+static uint32 regGpioInterruptEnable[] =
+{
+ GPABIMR, /* Port A */
+ GPABIMR, /* Port B */
+ GPCDIMR, /* Port C */
+ GPCDIMR, /* Port D */
+ GPEFIMR, /* Port E */
+ GPEFIMR, /* Port F */
+ GPGHIMR, /* Port G */
+ GPGHIMR, /* Port H */
+};
+
+static uint32 bitStartGpioInterruptEnable[] =
+{
+ 0, /* Port A */
+ 16, /* Port B */
+ 0, /* Port C */
+ 16, /* Port D */
+ 0, /* Port E */
+ 16, /* Port F */
+ 0, /* Port G */
+ 16, /* Port H */
+};
+
+int gpio_debug = 0;
+
+/*
+@func int32 | _getGpio | abstract GPIO registers
+@parm enum GPIO_FUNC | func | control/data/interrupt register
+@parm enum GPIO_PORT | port | GPIO port
+@parm uint32 | pin | pin number
+@rvalue uint32 | value
+@comm
+This function is for internal use only. You don't need to care what register address of GPIO is.
+This function abstracts these information.
+*/
+static uint32 _getGpio( enum GPIO_FUNC func, enum GPIO_PORT port, uint32 pin )
+{
+
+ GPIO_PRINT(4, "[%s():%d] func=%d port=%d pin=%d\n", __FUNCTION__, __LINE__, func, port, pin );
+ switch( func )
+ {
+ case GPIO_FUNC_DEDICATE:
+ GPIO_PRINT(5, "[%s():%d] regGpioControl[port]=0x%08x bitStartGpioControl[port]=%d\n", __FUNCTION__, __LINE__, regGpioControl[port], bitStartGpioControl[port] );
+
+ if ( REG32(regGpioControl[port]) & ( (uint32)1 << (pin+bitStartGpioControl[port]) ) )
+ return 1;
+ else
+ return 0;
+ break;
+
+ case GPIO_FUNC_DIRECTION:
+ GPIO_PRINT(5, "[%s():%d] regGpioDirection[port]=0x%08x bitStartGpioDirection[port]=%d\n", __FUNCTION__, __LINE__, regGpioDirection[port], bitStartGpioDirection[port] );
+
+ if ( REG32(regGpioDirection[port]) & ( (uint32)1 << (pin+bitStartGpioDirection[port]) ) )
+ return 1;
+ else
+ return 0;
+ break;
+
+ case GPIO_FUNC_DATA:
+ GPIO_PRINT(5, "[%s():%d] regGpioData[port]=0x%08x bitStartGpioData[port]=%d\n", __FUNCTION__, __LINE__, regGpioData[port], bitStartGpioData[port] );
+
+ if ( REG32(regGpioData[port]) & ( (uint32)1 << (pin+bitStartGpioData[port]) ) )
+ return 1;
+ else
+ return 0;
+ break;
+
+ case GPIO_FUNC_INTERRUPT_ENABLE:
+ GPIO_PRINT(5, "[%s():%d] regGpioInterruptEnable[port]=0x%08x bitStartGpioInterruptEnable[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptEnable[port], bitStartGpioInterruptEnable[port] );
+
+ return ( REG32(regGpioInterruptEnable[port]) >> (pin*2+bitStartGpioInterruptEnable[port]) ) & (uint32)0x3;
+ break;
+
+ case GPIO_FUNC_INTERRUPT_STATUS:
+ GPIO_PRINT(5, "[%s():%d] regGpioInterruptStatus[port]=0x%08x bitStartGpioInterruptEnable[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptStatus[port], bitStartGpioInterruptStatus[port] );
+
+ if ( REG32(regGpioInterruptStatus[port]) & ( (uint32)1 << (pin+bitStartGpioInterruptStatus[port]) ) )
+ return 1;
+ else
+ return 0;
+ break;
+
+ case GPIO_FUNC_MAX:
+ printk("Wrong GPIO function\n");
+ break;
+ }
+ return 0xffffffff;
+}
+
+
+/*
+@func int32 | _setGpio | abstract GPIO registers
+@parm enum GPIO_FUNC | func | control/data/interrupt register
+@parm enum GPIO_PORT | port | GPIO port
+@parm uint32 | pin | pin number
+@parm uint32 | data | value
+@rvalue NONE
+@comm
+This function is for internal use only. You don't need to care what register address of GPIO is.
+This function abstracts these information.
+*/
+static void _setGpio( enum GPIO_FUNC func, enum GPIO_PORT port, uint32 pin, uint32 data )
+{
+
+ GPIO_PRINT(4, "[%s():%d] func=%d port=%d pin=%d data=%d\n", __FUNCTION__, __LINE__, func, port, pin, data );
+ switch( func )
+ {
+ case GPIO_FUNC_DEDICATE:
+ GPIO_PRINT(5, "[%s():%d] regGpioControl[port]=0x%08x bitStartGpioControl[port]=%d\n", __FUNCTION__, __LINE__, regGpioControl[port], bitStartGpioControl[port] );
+
+ if ( data )
+ REG32(regGpioControl[port]) |= (uint32)1 << (pin+bitStartGpioControl[port]);
+ else {
+ REG32(regGpioControl[port]) &= ~((uint32)1 << (pin+bitStartGpioControl[port]));
+ //printk("oldsharepin_register=%x", REG32(SHAREPIN_REGISTER));
+ REG32(SHAREPIN_REGISTER) |= GpioShare_setting[(port<<3)|pin];
+ //printk("newsharepin_register=%x", REG32(SHAREPIN_REGISTER));
+ //GPIO_PRINT(5,"GPIOSET(%x)",(port<<3)|pin);
+ //printk("[%d,%d]GPIOSET(%x)", port, pin,(port<<3)|pin);
+ }
+ break;
+
+ case GPIO_FUNC_DIRECTION:
+ GPIO_PRINT(5, "[%s():%d] regGpioDirection[port]=0x%08x bitStartGpioDirection[port]=%d\n", __FUNCTION__, __LINE__, regGpioDirection[port], bitStartGpioDirection[port] );
+
+ if ( data )
+ REG32(regGpioDirection[port]) |= (uint32)1 << (pin+bitStartGpioDirection[port]);
+ else
+ REG32(regGpioDirection[port]) &= ~((uint32)1 << (pin+bitStartGpioDirection[port]));
+ break;
+
+ case GPIO_FUNC_DATA:
+ GPIO_PRINT(5, "[%s():%d] regGpioData[port]=0x%08x bitStartGpioData[port]=%d\n", __FUNCTION__, __LINE__, regGpioData[port], bitStartGpioData[port] );
+
+ if ( data )
+ REG32(regGpioData[port]) |= (uint32)1 << (pin+bitStartGpioData[port]);
+ else
+ REG32(regGpioData[port]) &= ~((uint32)1 << (pin+bitStartGpioData[port]));
+ break;
+
+ case GPIO_FUNC_INTERRUPT_ENABLE:
+ GPIO_PRINT(5, "[%s():%d] regGpioInterruptEnable[port]=0x%08x bitStartGpioInterruptEnable[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptEnable[port], bitStartGpioInterruptEnable[port] );
+
+ REG32(regGpioInterruptEnable[port]) &= ~((uint32)0x3 << (pin*2+bitStartGpioInterruptEnable[port]));
+ REG32(regGpioInterruptEnable[port]) |= (uint32)data << (pin*2+bitStartGpioInterruptEnable[port]);
+ break;
+
+ case GPIO_FUNC_INTERRUPT_STATUS:
+ GPIO_PRINT(5, "[%s():%d] regGpioInterruptStatus[port]=0x%08x bitStartGpioInterruptStatus[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptStatus[port], bitStartGpioInterruptStatus[port] );
+
+ if ( data )
+ REG32(regGpioInterruptStatus[port]) |= (uint32)1 << (pin+bitStartGpioInterruptStatus[port]);
+ else
+ REG32(regGpioInterruptStatus[port]) &= ~((uint32)1 << (pin+bitStartGpioInterruptStatus[port]));
+ break;
+
+ case GPIO_FUNC_MAX:
+ printk("Wrong GPIO function\n");
+ break;
+ }
+}
+
+/*
+@func int32 | _rtl8972B_initGpioPin | Initiate a specifed GPIO port.
+@parm uint32 | gpioId | The GPIO port that will be configured
+@parm enum GPIO_PERIPHERAL | dedicate | Dedicated peripheral type
+@parm enum GPIO_DIRECTION | direction | Data direction, in or out
+@parm enum GPIO_INTERRUPT_TYPE | interruptEnable | Interrupt mode
+@rvalue SUCCESS | success.
+@rvalue FAILED | failed. Parameter error.
+@comm
+This function is used to initialize GPIO port.
+*/
+int32 _rtl8972B_initGpioPin( uint32 gpioId, enum GPIO_CONTROL dedicate,
+ enum GPIO_DIRECTION direction,
+ enum GPIO_INTERRUPT_TYPE interruptEnable )
+{
+ uint32 port = GPIO_PORT( gpioId );
+ uint32 pin = GPIO_PIN( gpioId );
+
+ if ( port >= GPIO_PORT_MAX ) return FAILED;
+ if ( pin >= 8 ) return FAILED;
+
+ switch ( dedicate )
+ {
+ case GPIO_CONT_GPIO:
+ _setGpio( GPIO_FUNC_DEDICATE, port, pin, 0 );
+ break;
+ case GPIO_CONT_PERI:
+ _setGpio( GPIO_FUNC_DEDICATE, port, pin, 1 );
+ break;
+ }
+
+ _setGpio( GPIO_FUNC_DIRECTION, port, pin, direction );
+
+ _setGpio( GPIO_FUNC_INTERRUPT_ENABLE, port, pin, interruptEnable );
+
+ return SUCCESS;
+}
+
+/*
+@func int32 | _rtl8972B_getGpioDataBit | Get the bit value of a specified GPIO ID.
+@parm uint32 | gpioId | GPIO ID
+@parm uint32* | data | Pointer to store return value
+@rvalue SUCCESS | success.
+@rvalue FAILED | failed. Parameter error.
+@comm
+*/
+int32 _rtl8972B_getGpioDataBit( uint32 gpioId, uint32* pData )
+{
+ uint32 port = GPIO_PORT( gpioId );
+ uint32 pin = GPIO_PIN( gpioId );
+
+ if ( port >= GPIO_PORT_MAX ) return FAILED;
+ if ( pin >= 8 ) return FAILED;
+ if ( pData == NULL ) return FAILED;
+
+ *pData = _getGpio( GPIO_FUNC_DATA, port, pin );
+ GPIO_PRINT(3, "[%s():%d] (port=%d,pin=%d)=%d\n", __FUNCTION__, __LINE__, port, pin, *pData );
+ return SUCCESS;
+}
+
+/*
+@func int32 | _rtl8972B_setGpioDataBit | Set the bit value of a specified GPIO ID.
+@parm uint32 | gpioId | GPIO ID
+@parm uint32 | data | Data to write
+@rvalue SUCCESS | success.
+@rvalue FAILED | failed. Parameter error.
+@comm
+*/
+int32 _rtl8972B_setGpioDataBit( uint32 gpioId, uint32 data )
+{
+ uint32 port = GPIO_PORT( gpioId );
+ uint32 pin = GPIO_PIN( gpioId );
+
+ if ( port >= GPIO_PORT_MAX ) return FAILED;
+ if ( pin >= 8 ) return FAILED;
+
+ GPIO_PRINT(3, "[%s():%d] (port=%d,pin=%d)=%d\n", __FUNCTION__, __LINE__, port, pin, data );
+ _setGpio( GPIO_FUNC_DATA, port, pin, data );
+ return SUCCESS;
+}
+
+#endif //CONFIG_RTK_VOIP_DRIVERS_PCM8972B_FAMILY
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-27 11:28:17 +0000