1 | /*===============================================================*\ |
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2 | | Project: RTEMS support for MPC83xx | |
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3 | +-----------------------------------------------------------------+ |
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4 | | Copyright (c) 2007 | |
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5 | | Embedded Brains GmbH | |
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6 | | Obere Lagerstr. 30 | |
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7 | | D-82178 Puchheim | |
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8 | | Germany | |
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9 | | rtems@embedded-brains.de | |
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10 | +-----------------------------------------------------------------+ |
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11 | | The license and distribution terms for this file may be | |
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12 | | found in the file LICENSE in this distribution or at | |
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13 | | | |
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14 | | http://www.rtems.org/license/LICENSE. | |
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15 | | | |
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16 | +-----------------------------------------------------------------+ |
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17 | | this file contains the MPC83xx I2C driver declarations | |
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18 | \*===============================================================*/ |
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19 | #ifndef _MPC83XX_I2CDRV_H |
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20 | #define _MPC83XX_I2CDRV_H |
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21 | |
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22 | #include <rtems/libi2c.h> |
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23 | #include <rtems/irq.h> |
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24 | |
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25 | #include <bsp.h> |
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26 | |
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27 | #ifdef LIBBSP_POWERPC_GEN83XX_BSP_H |
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28 | #include <mpc83xx/mpc83xx.h> |
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29 | #endif |
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30 | |
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31 | #ifdef __cplusplus |
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32 | extern "C" { |
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33 | #endif |
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34 | |
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35 | #ifdef LIBBSP_POWERPC_MPC55XXEVB_BSP_H |
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36 | typedef struct { |
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37 | volatile uint8_t i2cadr; |
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38 | volatile uint8_t i2cfdr; |
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39 | volatile uint8_t i2ccr; |
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40 | volatile uint8_t i2csr; |
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41 | volatile uint8_t i2cdr; |
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42 | volatile uint8_t i2cdfsrr; |
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43 | } m83xxI2CRegisters_t; |
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44 | #endif |
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45 | |
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46 | typedef struct mpc83xx_i2c_softc { |
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47 | m83xxI2CRegisters_t *reg_ptr; /* ptr to HW registers */ |
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48 | int initialized; /* TRUE: module is initialized */ |
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49 | rtems_irq_number irq_number; /* IRQ number used for this module */ |
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50 | uint32_t base_frq; /* input frq for baud rate divider */ |
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51 | rtems_id irq_sema_id; /* SEMA used for IRQ signalling */ |
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52 | void (*probe)(struct mpc83xx_i2c_softc *self); |
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53 | } mpc83xx_i2c_softc_t ; |
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54 | |
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55 | typedef struct { |
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56 | rtems_libi2c_bus_t bus_desc; |
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57 | struct mpc83xx_i2c_softc softc; |
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58 | } mpc83xx_i2c_desc_t; |
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59 | |
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60 | |
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61 | extern rtems_libi2c_bus_ops_t mpc83xx_i2c_ops; |
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62 | |
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63 | #ifdef __cplusplus |
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64 | } |
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65 | #endif |
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66 | |
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67 | |
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68 | #endif /* _MPC83XX_I2CDRV_H */ |
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