include/pcmcia/soc_common.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <pcmcia/ss.h>
   3
   4 struct module;
   5 struct cpufreq_freqs;
   6
   7 struct soc_pcmcia_regulator {
   8         struct regulator        *reg;
   9         bool                    on;
  10 };
  11
  12 struct pcmcia_state {
  13   unsigned detect: 1,
  14             ready: 1,
  15              bvd1: 1,
  16              bvd2: 1,
  17            wrprot: 1,
  18             vs_3v: 1,
  19             vs_Xv: 1;
  20 };
  21
  22 /*
  23  * This structure encapsulates per-socket state which we might need to
  24  * use when responding to a Card Services query of some kind.
  25  */
  26 struct soc_pcmcia_socket {
  27         struct pcmcia_socket    socket;
  28
  29         /*
  30          * Info from low level handler
  31          */
  32         unsigned int            nr;
  33         struct clk              *clk;
  34
  35         /*
  36          * Core PCMCIA state
  37          */
  38         const struct pcmcia_low_level *ops;
  39
  40         unsigned int            status;
  41         socket_state_t          cs_state;
  42
  43         unsigned short          spd_io[MAX_IO_WIN];
  44         unsigned short          spd_mem[MAX_WIN];
  45         unsigned short          spd_attr[MAX_WIN];
  46
  47         struct resource         res_skt;
  48         struct resource         res_io;
  49         struct resource         res_io_io;
  50         struct resource         res_mem;
  51         struct resource         res_attr;
  52
  53         struct {
  54                 int             gpio;
  55                 struct gpio_desc *desc;
  56                 unsigned int    irq;
  57                 const char      *name;
  58         } stat[6];
  59 #define SOC_STAT_CD             0       /* Card detect */
  60 #define SOC_STAT_BVD1           1       /* BATDEAD / IOSTSCHG */
  61 #define SOC_STAT_BVD2           2       /* BATWARN / IOSPKR */
  62 #define SOC_STAT_RDY            3       /* Ready / Interrupt */
  63 #define SOC_STAT_VS1            4       /* Voltage sense 1 */
  64 #define SOC_STAT_VS2            5       /* Voltage sense 2 */
  65
  66         struct gpio_desc        *gpio_reset;
  67         struct gpio_desc        *gpio_bus_enable;
  68         struct soc_pcmcia_regulator vcc;
  69         struct soc_pcmcia_regulator vpp;
  70
  71         unsigned int            irq_state;
  72
  73 #ifdef CONFIG_CPU_FREQ
  74         struct notifier_block   cpufreq_nb;
  75 #endif
  76         struct timer_list       poll_timer;
  77         struct list_head        node;
  78         void *driver_data;
  79 };
  80
  81
  82 struct pcmcia_low_level {
  83         struct module *owner;
  84
  85         /* first socket in system */
  86         int first;
  87         /* nr of sockets */
  88         int nr;
  89
  90         int (*hw_init)(struct soc_pcmcia_socket *);
  91         void (*hw_shutdown)(struct soc_pcmcia_socket *);
  92
  93         void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
  94         int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
  95
  96         /*
  97          * Enable card status IRQs on (re-)initialisation.  This can
  98          * be called at initialisation, power management event, or
  99          * pcmcia event.
 100          */
 101         void (*socket_init)(struct soc_pcmcia_socket *);
 102
 103         /*
 104          * Disable card status IRQs and PCMCIA bus on suspend.
 105          */
 106         void (*socket_suspend)(struct soc_pcmcia_socket *);
 107
 108         /*
 109          * Hardware specific timing routines.
 110          * If provided, the get_timing routine overrides the SOC default.
 111          */
 112         unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
 113         int (*set_timing)(struct soc_pcmcia_socket *);
 114         int (*show_timing)(struct soc_pcmcia_socket *, char *);
 115
 116 #ifdef CONFIG_CPU_FREQ
 117         /*
 118          * CPUFREQ support.
 119          */
 120         int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
 121 #endif
 122 };
 123
 124
 125