drivers/misc/mediatek/lcm/bm8578/bm8578.c

   1 #include <linux/string.h>
   2
   3 #include "lcm_drv.h"
   4
   5
   6 // ---------------------------------------------------------------------------
   7 //  Local Constants
   8 // ---------------------------------------------------------------------------
   9
  10 #define FRAME_WIDTH  (240)
  11 #define FRAME_HEIGHT (400)
  12 #define LCM_ID       (0x52)
  13 // ---------------------------------------------------------------------------
  14 //  Local Variables
  15 // ---------------------------------------------------------------------------
  16
  17 static LCM_UTIL_FUNCS lcm_util = {0};
  18
  19 #define SET_RESET_PIN(v)    (lcm_util.set_reset_pin((v)))
  20
  21 #define UDELAY(n) (lcm_util.udelay(n))
  22 #define MDELAY(n) (lcm_util.mdelay(n))
  23
  24
  25 // ---------------------------------------------------------------------------
  26 //  Local Functions
  27 // ---------------------------------------------------------------------------
  28
  29 static __inline unsigned int LOW_BYTE(unsigned int x)
  30 {
  31     return (x & 0xFF);
  32 }
  33
  34 static __inline unsigned int HIGH_BYTE(unsigned int x)
  35 {
  36     return ((x >> 8) & 0xFF);
  37 }
  38
  39 static __inline void send_ctrl_cmd(unsigned int cmd)
  40 {
  41     lcm_util.send_cmd(cmd);
  42 }
  43
  44 static __inline void send_data_cmd(unsigned int data)
  45 {
  46     lcm_util.send_data(data);
  47 }
  48
  49 static __inline unsigned int read_data_cmd(void)
  50 {
  51     return lcm_util.read_data();
  52 }
  53
  54 static __inline void set_lcm_register(unsigned int regIndex,
  55                                       unsigned int regData)
  56 {
  57     send_ctrl_cmd(regIndex);
  58     send_data_cmd(regData);
  59 }
  60
  61
  62 static void init_lcm_registers(void)
  63 {
  64     set_lcm_register(0x83, 0x02);    // TESTTM=1
  65     set_lcm_register(0x85, 0x03);    // VDC_SEL=011
  66     set_lcm_register(0x8c, 0x93);
  67     set_lcm_register(0x91, 0x01);    // pre:0x01
  68     set_lcm_register(0x83, 0x00);
  69
  70     // Gamma Setting
  71     set_lcm_register(0x3E, 0xB0);
  72     set_lcm_register(0x3F, 0x03);
  73     set_lcm_register(0x40, 0x10);
  74     set_lcm_register(0x41, 0x56);
  75     set_lcm_register(0x42, 0x13);
  76     set_lcm_register(0x43, 0x46);
  77     set_lcm_register(0x44, 0x23);
  78     set_lcm_register(0x45, 0x76);
  79     set_lcm_register(0x46, 0x00);
  80     set_lcm_register(0x47, 0x5e);
  81     set_lcm_register(0x48, 0x4f);
  82     set_lcm_register(0x49, 0x40);
  83
  84     // Power Supply Setting
  85     set_lcm_register(0x17, 0x91);    // RADJ = 1010(7.5MHz x 100%), OSC_EN = 1
  86     set_lcm_register(0x23, 0x01);    // TE ON, new added
  87     set_lcm_register(0x2B, 0xF9);    // N_DCDC = 0xF9
  88     MDELAY(10);
  89
  90     set_lcm_register(0x1B, 0x16);    // BT = 0001, AP = 100
  91     set_lcm_register(0x1A, 0x11);    // VC3 = 001, VC1 = 001
  92     set_lcm_register(0x1C, 0x0D);    // VRH = 1101
  93     set_lcm_register(0x1F, 0x42);    // VCM = 100_0010
  94     MDELAY(20);
  95
  96     set_lcm_register(0x19, 0x0A);    // GASENB=0,PON=0,DK=1,XDK=0,VLCD_TRI=1,STB=0
  97     set_lcm_register(0x19, 0x1A);    // GASENB=0,PON=1,DK=1,XDK=0,VLCD_TRI=1,STB=0
  98     MDELAY(40);
  99     set_lcm_register(0x19, 0x12);    // GASENB=0,PON=1,DK=0,XDK=0,VLCD_TRI=1,STB=0
 100     MDELAY(40);
 101     set_lcm_register(0x1E, 0x2C);    // VCOMG=1,VDV=0_1100
 102     MDELAY(100);
 103     set_lcm_register(0x3C, 0x60);
 104     set_lcm_register(0x3D, 0x40);
 105     set_lcm_register(0x34, 0x38);
 106     set_lcm_register(0x35, 0x38);
 107     set_lcm_register(0x24, 0x38);
 108     MDELAY(40);
 109     set_lcm_register(0x24, 0x3C);
 110     set_lcm_register(0x16, 0x08);    // pre:C8
 111     set_lcm_register(0x01, 0x02);
 112     set_lcm_register(0x55, 0x00);
 113 }
 114
 115
 116 // ---------------------------------------------------------------------------
 117 //  LCM Driver Implementations
 118 // ---------------------------------------------------------------------------
 119
 120 static void lcm_set_util_funcs(const LCM_UTIL_FUNCS *util)
 121 {
 122     memcpy(&lcm_util, util, sizeof(LCM_UTIL_FUNCS));
 123 }
 124
 125
 126 static void lcm_get_params(LCM_PARAMS *params)
 127 {
 128     memset(params, 0, sizeof(LCM_PARAMS));
 129
 130     params->type   = LCM_TYPE_DBI;
 131     params->ctrl   = LCM_CTRL_PARALLEL_DBI;
 132     params->width  = FRAME_WIDTH;
 133     params->height = FRAME_HEIGHT;
 134
 135     params->dbi.port                    = 0;
 136     params->dbi.clock_freq              = LCM_DBI_CLOCK_FREQ_52M;
 137     params->dbi.data_width              = LCM_DBI_DATA_WIDTH_18BITS;
 138     params->dbi.data_format.color_order = LCM_COLOR_ORDER_RGB;
 139     params->dbi.data_format.trans_seq   = LCM_DBI_TRANS_SEQ_LSB_FIRST;
 140     params->dbi.data_format.padding     = LCM_DBI_PADDING_ON_MSB;
 141     params->dbi.data_format.format      = LCM_DBI_FORMAT_RGB666;
 142     params->dbi.data_format.width       = LCM_DBI_DATA_WIDTH_18BITS;
 143     params->dbi.cpu_write_bits          = LCM_DBI_CPU_WRITE_32_BITS;
 144     params->dbi.io_driving_current      = 0;
 145
 146     params->dbi.te_mode                 = LCM_DBI_TE_MODE_VSYNC_OR_HSYNC;
 147     params->dbi.te_edge_polarity        = LCM_POLARITY_RISING;
 148     params->dbi.te_hs_delay_cnt         = 50;
 149     params->dbi.te_vs_width_cnt         = 277;
 150     params->dbi.te_vs_width_cnt_div     = LCM_DBI_TE_VS_WIDTH_CNT_DIV_16;
 151
 152     params->dbi.parallel.write_setup    = 2;
 153     params->dbi.parallel.write_hold     = 2;
 154     params->dbi.parallel.write_wait     = 4;
 155     params->dbi.parallel.read_setup     = 2;
 156     params->dbi.parallel.read_latency   = 9;
 157     params->dbi.parallel.wait_period    = 0;
 158 }
 159
 160
 161 static void lcm_init(void)
 162 {
 163     SET_RESET_PIN(0);
 164     MDELAY(40);
 165     SET_RESET_PIN(1);
 166     MDELAY(250);
 167
 168     init_lcm_registers();
 169
 170     // Enable tearing control signal
 171     //
 172     set_lcm_register(0x23, 0x03);   // enable TEMODE = 1
 173 }
 174
 175
 176 static void lcm_suspend(void)
 177 {
 178     set_lcm_register(0x24, 0x38); // PT=00,GON=1, DTE=1, D=11
 179     MDELAY(40);
 180     set_lcm_register(0x24, 0x28); // PT=00,GON=1, DTE=1, D=11
 181     MDELAY(40);
 182     set_lcm_register(0x24, 0x20); // PT=00,GON=1, DTE=1, D=11
 183     set_lcm_register(0x3C, 0x00); // N_SAP=0000 0000
 184     set_lcm_register(0x1B, 0x10); // BT=0001, AP=000
 185     set_lcm_register(0x19, 0x0A); // PON=0, DK=1
 186     set_lcm_register(0x1E, 0x00); // VCOMG=1,
 187     set_lcm_register(0x19, 0x01); // STB=1
 188     set_lcm_register(0x17, 0x00); // OSC_EN=0
 189 }
 190
 191
 192 static void lcm_resume(void)
 193 {
 194     set_lcm_register(0x17, 0x91); // RADJ=1010(7.5MHz x 100%), OSC_EN=1
 195     set_lcm_register(0x2B, 0xF9); // N_DCDC=0xF9.
 196     MDELAY(10);
 197     set_lcm_register(0x1B, 0x14); // BT=0001, AP=100
 198     set_lcm_register(0x1A, 0x11); // VC3=001, VC1=001
 199     set_lcm_register(0x1C, 0x0D); // VRH=1101
 200     set_lcm_register(0x1F, 0x42); // VCM=100_0010
 201     MDELAY(20);
 202     set_lcm_register(0x19, 0x0A); // GASENB=0, PON=0, DK=1, XDK=0,VLCD_TRI=1, STB=0
 203     set_lcm_register(0x19, 0x1A); // GASENB=0, PON=1, DK=1, XDK=0,VLCD_TRI=1, STB=0
 204     MDELAY(40);
 205     set_lcm_register(0x19, 0x12); // GASENB=0, PON=1, DK=0, XDK=0,VLCD_TRI=1, STB=0
 206     MDELAY(40);
 207     set_lcm_register(0x1E, 0x2C); // VCOMG=1, VDV=0_1100
 208     MDELAY(100);
 209
 210     // Display ON Setting
 211     set_lcm_register(0x3C, 0x60); // N_SAP=0110 0000
 212     set_lcm_register(0x3D, 0x40); // I_SAP =0100 0000
 213     set_lcm_register(0x34, 0x38); // EQS=0011 1000
 214     set_lcm_register(0x35, 0x38); // EQP=0011 1000
 215     set_lcm_register(0x24, 0x38); // PT=00,GON=1, DTE=1, D=10
 216     MDELAY(40);
 217     set_lcm_register(0x24, 0x3C); // PT=00,GON=1, DTE=1, D=11
 218     set_lcm_register(0x16, 0x08); // MY=1,MX=1,MV=0,GS=0,BGR=1,SS=0,SRL_EN=0,SM=0
 219     set_lcm_register(0x01, 0x02); // IDMON=0,INVON=0,NORNO=1,PTLON=0
 220     set_lcm_register(0x55, 0x00); // SM_PANEL=0,SS_PANEL=0,GS_PANEL=0,REV_PANEL=0,BGR_PANEL=0
 221
 222     // Enable tearing control signal
 223     //
 224     set_lcm_register(0x23, 0x03);   // enable TEMODE = 1
 225 }
 226
 227
 228 static void lcm_update(unsigned int x, unsigned int y,
 229                        unsigned int width, unsigned int height)
 230 {
 231     unsigned int x0 = x;
 232     unsigned int y0 = y;
 233     unsigned int x1 = x0 + width - 1;
 234     unsigned int y1 = y0 + height - 1;
 235
 236         set_lcm_register(0x02, HIGH_BYTE(x0));
 237         set_lcm_register(0x03, LOW_BYTE(x0));
 238         set_lcm_register(0x04, HIGH_BYTE(x1));
 239         set_lcm_register(0x05, LOW_BYTE(x1));
 240         set_lcm_register(0x06, HIGH_BYTE(y0));
 241         set_lcm_register(0x07, LOW_BYTE(y0));
 242         set_lcm_register(0x08, HIGH_BYTE(y1));
 243         set_lcm_register(0x09, LOW_BYTE(y1));
 244
 245     send_ctrl_cmd(0x22);
 246 }
 247
 248 static unsigned int lcm_compare_id(void)
 249 {
 250         send_ctrl_cmd(0x00);
 251     return (LCM_ID == read_data_cmd())?1:0;
 252 }
 253
 254
 255 // ---------------------------------------------------------------------------
 256 //  Get LCM Driver Hooks
 257 // ---------------------------------------------------------------------------
 258
 259 LCM_DRIVER bm8578_lcm_drv =
 260 {
 261     .name                       = "bm8578",
 262         .set_util_funcs = lcm_set_util_funcs,
 263         .get_params     = lcm_get_params,
 264         .init           = lcm_init,
 265         .suspend        = lcm_suspend,
 266         .resume         = lcm_resume,
 267         .update         = lcm_update,
 268         .compare_id     = lcm_compare_id
 269 };