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#include <linux/string.h>
#include "lcm_drv.h"
// ---------------------------------------------------------------------------
// Local Constants
// ---------------------------------------------------------------------------
#define FRAME_WIDTH (240)
#define FRAME_HEIGHT (320)
#define LCM_ID (0x5408)
// ---------------------------------------------------------------------------
// Local Variables
// ---------------------------------------------------------------------------
static LCM_UTIL_FUNCS lcm_util = {0};
#define SET_RESET_PIN(v) (lcm_util.set_reset_pin((v)))
#define UDELAY(n) (lcm_util.udelay(n))
#define MDELAY(n) (lcm_util.mdelay(n))
#define PANEL_CONTROL_DELAY (1)
#define POWER_ON_SEQ_DELAY (1)
// ---------------------------------------------------------------------------
// Forward Declarations
// ---------------------------------------------------------------------------
static void lcm_update(unsigned int x, unsigned int y,
unsigned int width, unsigned int height);
// ---------------------------------------------------------------------------
// Local Functions
// ---------------------------------------------------------------------------
static __inline void send_ctrl_cmd(unsigned int cmd)
{
lcm_util.send_cmd(cmd);
}
static __inline void send_data_cmd(unsigned int data)
{
lcm_util.send_data(data);
}
static __inline unsigned int read_data_cmd(void)
{
return lcm_util.read_data();
}
static __inline void set_lcm_register(unsigned int regIndex,
unsigned int regData)
{
send_ctrl_cmd(regIndex);
send_data_cmd(regData);
}
static void sw_clear_panel(unsigned int color)
{
unsigned int x, y;
lcm_update(0, 0, FRAME_WIDTH, FRAME_HEIGHT);
for (y = 0; y < FRAME_HEIGHT; ++ y) {
for (x = 0; x < FRAME_WIDTH; ++ x) {
lcm_util.send_data(color);
}
}
}
static void init_lcm_registers(void)
{
set_lcm_register(0x00, 0x0000);
set_lcm_register(0x01, 0x0100);
set_lcm_register(0x03, 0x1030);
set_lcm_register(0x02, 0x0700);
set_lcm_register(0x04, 0x0000);
set_lcm_register(0x08, 0x0207);
set_lcm_register(0x09, 0x0000);
set_lcm_register(0x0A, 0x0000); // FMARK function
set_lcm_register(0x0C, 0x0000); // MCU interface setting
set_lcm_register(0x0D, 0x0000); // Frame marker Position
set_lcm_register(0x0F, 0x0000); // MCU interface polarity
set_lcm_register(0x07, 0x0101);
// ----------- Power On sequence -----------
set_lcm_register(0x10, 0x10B0); // SAP, BT[3:0], AP, DSTB, SLP, STB
MDELAY(POWER_ON_SEQ_DELAY);
set_lcm_register(0x11, 0x0007); // DC1[2:0], DC0[2:0], VC[2:0]
MDELAY(POWER_ON_SEQ_DELAY);
set_lcm_register(0x17, 0x0001);
MDELAY(POWER_ON_SEQ_DELAY);
set_lcm_register(0x12, 0x01B9); // VREG1OUT voltage
MDELAY(POWER_ON_SEQ_DELAY);
set_lcm_register(0x13, 0x0A00); // VDV[4:0] for VCOM amplitude
MDELAY(POWER_ON_SEQ_DELAY);
set_lcm_register(0x29, 0x0006); // VCM[4:0] for VCOMH
MDELAY(POWER_ON_SEQ_DELAY);
// ----------- Adjust the Gamma Curve -----------
set_lcm_register(0x30, 0x0002);
set_lcm_register(0x31, 0x0720);
set_lcm_register(0x32, 0x0924);
set_lcm_register(0x33, 0x3f10);
set_lcm_register(0x34, 0x3d06);
set_lcm_register(0x35, 0x1003);
set_lcm_register(0x36, 0x0507);
set_lcm_register(0x37, 0x0411);
set_lcm_register(0x38, 0x0005);
set_lcm_register(0x39, 0x0003);
set_lcm_register(0x3A, 0x0805);
set_lcm_register(0x3B, 0x0b02);
set_lcm_register(0x3C, 0x040f);
set_lcm_register(0x3D, 0x050c);
set_lcm_register(0x3E, 0x0103);
set_lcm_register(0x3F, 0x0401);
// ----------- Set GRAM area -----------
set_lcm_register(0x50, 0x0000); // Horizontal GRAM Start Address
set_lcm_register(0x51, 0x00EF); // Horizontal GRAM End Address
set_lcm_register(0x52, 0x0000); // Vertical GRAM Start Address
set_lcm_register(0x53, 0x013F); // Vertical GRAM Start Address
set_lcm_register(0x60, 0x2700); // Gate Scan Line
set_lcm_register(0x61, 0x0001); // NDL,VLE, REV
set_lcm_register(0x6A, 0x0000); // set scrolling line
// ----------- Partial Display Control -----------
set_lcm_register(0x80, 0x0000);
set_lcm_register(0x81, 0x0000);
set_lcm_register(0x82, 0x0000);
set_lcm_register(0x83, 0x0000);
set_lcm_register(0x84, 0x0000);
set_lcm_register(0x85, 0x0000);
// ----------- Panel Control -----------
set_lcm_register(0x90, 0x0010);
set_lcm_register(0x92, 0x0000);
set_lcm_register(0x93, 0x0103);
set_lcm_register(0x95, 0x0110);
set_lcm_register(0x97, 0x0000);
set_lcm_register(0x98, 0x0000);
set_lcm_register(0xF0, 0x5408);
set_lcm_register(0xF2, 0x00DF); // green, blue point CR
set_lcm_register(0xF3, 0x0007);
set_lcm_register(0xF4, 0x001F);
set_lcm_register(0xF0, 0x0000);
set_lcm_register(0x07, 0x0173);
MDELAY(PANEL_CONTROL_DELAY);
}
// ---------------------------------------------------------------------------
// LCM Driver Implementations
// ---------------------------------------------------------------------------
static void lcm_set_util_funcs(const LCM_UTIL_FUNCS *util)
{
memcpy(&lcm_util, util, sizeof(LCM_UTIL_FUNCS));
}
static void lcm_get_params(LCM_PARAMS *params)
{
memset(params, 0, sizeof(LCM_PARAMS));
params->type = LCM_TYPE_DBI;
params->ctrl = LCM_CTRL_PARALLEL_DBI;
params->width = FRAME_WIDTH;
params->height = FRAME_HEIGHT;
params->dbi.port = 1;
params->dbi.clock_freq = LCM_DBI_CLOCK_FREQ_52M;
params->dbi.data_width = LCM_DBI_DATA_WIDTH_16BITS;
params->dbi.data_format.color_order = LCM_COLOR_ORDER_RGB;
params->dbi.data_format.trans_seq = LCM_DBI_TRANS_SEQ_MSB_FIRST;
params->dbi.data_format.padding = LCM_DBI_PADDING_ON_LSB;
params->dbi.data_format.format = LCM_DBI_FORMAT_RGB565;
params->dbi.data_format.width = LCM_DBI_DATA_WIDTH_16BITS;
params->dbi.cpu_write_bits = LCM_DBI_CPU_WRITE_16_BITS;
params->dbi.io_driving_current = 0;
params->dbi.parallel.write_setup = 0;
params->dbi.parallel.write_hold = 3;
params->dbi.parallel.write_wait = 3;
params->dbi.parallel.read_setup = 2;
params->dbi.parallel.read_latency = 19;
params->dbi.parallel.wait_period = 0;
}
static void lcm_init(void)
{
SET_RESET_PIN(0);
MDELAY(2);
SET_RESET_PIN(1);
MDELAY(2);
init_lcm_registers();
sw_clear_panel(0x0); // clean screen as all black
}
static void lcm_suspend(void)
{
set_lcm_register(0x07, 0x0101);
MDELAY(10);
set_lcm_register(0x07, 0x0000); // display off
MDELAY(10);
set_lcm_register(0x10, 0x10B2);
MDELAY(50);
}
static void lcm_resume(void)
{
#if 0
set_lcm_register(0x00, 0x0000);
set_lcm_register(0x01, 0x0100);
set_lcm_register(0x03, 0x10B0);
set_lcm_register(0x02, 0x0700); // set N_line inversion
set_lcm_register(0x04, 0x0000);
set_lcm_register(0x08, 0x0207);
set_lcm_register(0x09, 0x0000);
set_lcm_register(0x0A, 0x0000);
set_lcm_register(0x0C, 0x0000);
set_lcm_register(0x0D, 0x0000);
set_lcm_register(0x0F, 0x0000);
set_lcm_register(0x07, 0x0101);
set_lcm_register(0x10, 0x10B0); // 0x12B0 power control start
MDELAY(0x20); // delay 20ms for voltage setup
set_lcm_register(0x11, 0x0007);
MDELAY(0x20);
set_lcm_register(0x17, 0x0001);
MDELAY(0x20);
set_lcm_register(0x12, 0x01B9); // 0x01BD
MDELAY(0x20);
set_lcm_register(0x13, 0x0A00); // 0x1800
MDELAY(0x20);
set_lcm_register(0x29, 0x0008); // 0x0019 power control end
MDELAY(0x20);
set_lcm_register(0x30, 0x0002); // Gamma 2.4 start
set_lcm_register(0x31, 0x0720);
set_lcm_register(0x32, 0x0924);
set_lcm_register(0x33, 0x3F10);
set_lcm_register(0x34, 0x3D06);
set_lcm_register(0x35, 0x1003);
set_lcm_register(0x36, 0x0507);
set_lcm_register(0x37, 0x0411);
set_lcm_register(0x38, 0x0005);
set_lcm_register(0x39, 0x0003);
set_lcm_register(0x3A, 0x0805);
set_lcm_register(0x3B, 0x0B02);
set_lcm_register(0x3C, 0x040F);
set_lcm_register(0x3D, 0x050C);
set_lcm_register(0x3E, 0x0103);
set_lcm_register(0x3F, 0x0401); // Gamma 2.4 end
set_lcm_register(0x50, 0x0000);
set_lcm_register(0x51, 0x00EF);
set_lcm_register(0x52, 0x0000);
set_lcm_register(0x53, 0x013F);
set_lcm_register(0x60, 0x2700);
set_lcm_register(0x61, 0x0001);
set_lcm_register(0x6A, 0x0000);
set_lcm_register(0x80, 0x0000);
set_lcm_register(0x81, 0x0000);
set_lcm_register(0x82, 0x0000);
set_lcm_register(0x83, 0x0000);
set_lcm_register(0x84, 0x0000);
set_lcm_register(0x85, 0x0000);
set_lcm_register(0x90, 0x0012);
set_lcm_register(0x92, 0x0000);
set_lcm_register(0x93, 0x0103);
set_lcm_register(0x95, 0x0110);
set_lcm_register(0x97, 0x0000);
set_lcm_register(0x98, 0x0000);
set_lcm_register(0xF0, 0x5408);
set_lcm_register(0xF2, 0x00DF); // green, blue point CR
set_lcm_register(0xF3, 0x0007);
set_lcm_register(0xF4, 0x001F);
set_lcm_register(0xF0, 0x0000);
#endif
set_lcm_register(0x10, 0x10B0);
MDELAY(25);
set_lcm_register(0x07, 0x0173);
MDELAY(175);
}
static void lcm_update(unsigned int x, unsigned int y,
unsigned int width, unsigned int height)
{
unsigned int x0 = x;
unsigned int y0 = y;
unsigned int x1 = x0 + width - 1;
unsigned int y1 = y0 + height - 1;
set_lcm_register(0x50, x0);
set_lcm_register(0x51, x1);
set_lcm_register(0x52, y0);
set_lcm_register(0x53, y1);
set_lcm_register(0x20, x0);
set_lcm_register(0x21, y0);
send_ctrl_cmd(0x22);
}
static unsigned int lcm_compare_id(void)
{
send_ctrl_cmd(0x00);
return (LCM_ID == read_data_cmd())?1:0;
}
// ---------------------------------------------------------------------------
// Get LCM Driver Hooks
// ---------------------------------------------------------------------------
LCM_DRIVER spfd5461a_lcm_drv =
{
.name = "spfd5461a",
.set_util_funcs = lcm_set_util_funcs,
.get_params = lcm_get_params,
.init = lcm_init,
.suspend = lcm_suspend,
.resume = lcm_resume,
.update = lcm_update,
.compare_id = lcm_compare_id
};
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