staging/fbtft/fbtft-bus.c

10  *   void (*write_reg)(struct fbtft_par *par, int len, ...);
15 void func(struct fbtft_par *par, int len, ...)                                \
20 	buffer_type *buf = (buffer_type *)par->buf;                           \
22 	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {                    \
29 		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,                  \
30 				  par->info->device, buffer_type, buf, len,   \
36 	if (par->startbyte) {                                                 \
37 		*(u8 *)par->buf = par->startbyte;                             \
38 		buf = (buffer_type *)(par->buf + 1);                          \
43 	ret = fbtft_write_buf_dc(par, par->buf, sizeof(data_type) + offset,   \
49 	if (par->startbyte)                                                   \
50 		*(u8 *)par->buf = par->startbyte | 0x2;                       \
57 		fbtft_write_buf_dc(par, par->buf,			      \
69 void fbtft_write_reg8_bus9(struct fbtft_par *par, int len, ...)
74 	u16 *buf = (u16 *)par->buf;
76 	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
81 		fbtft_par_dbg_hex(DEBUG_WRITE_REGISTER, par,
82 				  par->info->device, u8, buf, len, "%s: ",
88 	if (par->spi && (par->spi->bits_per_word == 8)) {
105 	ret = par->fbtftops.write(par, par->buf, (len + pad) * sizeof(u16));
107 		dev_err(par->info->device,
116  *   int (*write_vmem)(struct fbtft_par *par);
121 int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
124 	__be16 *txbuf16 = par->txbuf.buf;
132 	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
136 	vmem16 = (u16 *)(par->info->screen_buffer + offset);
138 	gpiod_set_value(par->gpio.dc, 1);
141 	if (!par->txbuf.buf)
142 		return par->fbtftops.write(par, vmem16, len);
145 	tx_array_size = par->txbuf.len / 2;
147 	if (par->startbyte) {
148 		txbuf16 = par->txbuf.buf + 1;
150 		*(u8 *)(par->txbuf.buf) = par->startbyte | 0x2;
156 		dev_dbg(par->info->device, "to_copy=%zu, remain=%zu\n",
163 		ret = par->fbtftops.write(par, par->txbuf.buf,
175 int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
178 	u16 *txbuf16 = par->txbuf.buf;
185 	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
188 	if (!par->txbuf.buf) {
189 		dev_err(par->info->device, "%s: txbuf.buf is NULL\n", __func__);
194 	vmem8 = par->info->screen_buffer + offset;
196 	tx_array_size = par->txbuf.len / 2;
200 		dev_dbg(par->info->device, "to_copy=%zu, remain=%zu\n",
213 		ret = par->fbtftops.write(par, par->txbuf.buf, to_copy * 2);
223 int fbtft_write_vmem8_bus8(struct fbtft_par *par, size_t offset, size_t len)
225 	dev_err(par->info->device, "%s: function not implemented\n", __func__);
231 int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len)
235 	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
238 	vmem16 = (u16 *)(par->info->screen_buffer + offset);
241 	return fbtft_write_buf_dc(par, vmem16, len, 1);