34 	void (*update)(struct img_ascii_lcd_ctx *ctx);
71 static void boston_update(struct img_ascii_lcd_ctx *ctx)  in boston_update()  argument
76 	val = *((u64 *)&ctx->curr[0]);  in boston_update()
77 	__raw_writeq(val, ctx->base);  in boston_update()
79 	val = *((u32 *)&ctx->curr[0]);  in boston_update()
80 	__raw_writel(val, ctx->base);  in boston_update()
81 	val = *((u32 *)&ctx->curr[4]);  in boston_update()
82 	__raw_writel(val, ctx->base + 4);  in boston_update()
97 static void malta_update(struct img_ascii_lcd_ctx *ctx)  in malta_update()  argument
102 	for (i = 0; i < ctx->cfg->num_chars; i++) {  in malta_update()
103 		err = regmap_write(ctx->regmap,  in malta_update()
104 				   ctx->offset + (i * 8), ctx->curr[i]);  in malta_update()
133 static int sead3_wait_sm_idle(struct img_ascii_lcd_ctx *ctx)  in sead3_wait_sm_idle()  argument
139 		err = regmap_read(ctx->regmap,  in sead3_wait_sm_idle()
140 				  ctx->offset + SEAD3_REG_CPLD_STATUS,  in sead3_wait_sm_idle()
150 static int sead3_wait_lcd_idle(struct img_ascii_lcd_ctx *ctx)  in sead3_wait_lcd_idle()  argument
155 	err = sead3_wait_sm_idle(ctx);  in sead3_wait_lcd_idle()
160 		err = regmap_read(ctx->regmap,  in sead3_wait_lcd_idle()
161 				  ctx->offset + SEAD3_REG_LCD_CTRL,  in sead3_wait_lcd_idle()
166 		err = sead3_wait_sm_idle(ctx);  in sead3_wait_lcd_idle()
170 		err = regmap_read(ctx->regmap,  in sead3_wait_lcd_idle()
171 				  ctx->offset + SEAD3_REG_CPLD_DATA,  in sead3_wait_lcd_idle()
180 static void sead3_update(struct img_ascii_lcd_ctx *ctx)  in sead3_update()  argument
185 	for (i = 0; i < ctx->cfg->num_chars; i++) {  in sead3_update()
186 		err = sead3_wait_lcd_idle(ctx);  in sead3_update()
190 		err = regmap_write(ctx->regmap,  in sead3_update()
191 				   ctx->offset + SEAD3_REG_LCD_CTRL,  in sead3_update()
196 		err = sead3_wait_lcd_idle(ctx);  in sead3_update()
200 		err = regmap_write(ctx->regmap,  in sead3_update()
201 				   ctx->offset + SEAD3_REG_LCD_DATA,  in sead3_update()
202 				   ctx->curr[i]);  in sead3_update()
233 	struct img_ascii_lcd_ctx *ctx = (struct img_ascii_lcd_ctx *)arg;  in img_ascii_lcd_scroll()  local
234 	unsigned int i, ch = ctx->scroll_pos;  in img_ascii_lcd_scroll()
235 	unsigned int num_chars = ctx->cfg->num_chars;  in img_ascii_lcd_scroll()
240 		for (; i < num_chars && ch < ctx->message_len; i++, ch++)  in img_ascii_lcd_scroll()
241 			ctx->curr[i] = ctx->message[ch];  in img_ascii_lcd_scroll()
248 	ctx->cfg->update(ctx);  in img_ascii_lcd_scroll()
251 	ctx->scroll_pos++;  in img_ascii_lcd_scroll()
252 	ctx->scroll_pos %= ctx->message_len;  in img_ascii_lcd_scroll()
255 	if (ctx->message_len > ctx->cfg->num_chars)  in img_ascii_lcd_scroll()
256 		mod_timer(&ctx->timer, jiffies + ctx->scroll_rate);  in img_ascii_lcd_scroll()
271 static int img_ascii_lcd_display(struct img_ascii_lcd_ctx *ctx,  in img_ascii_lcd_display()  argument
277 	del_timer_sync(&ctx->timer);  in img_ascii_lcd_display()
286 	new_msg = devm_kmalloc(&ctx->pdev->dev, count + 1, GFP_KERNEL);  in img_ascii_lcd_display()
293 	if (ctx->message)  in img_ascii_lcd_display()
294 		devm_kfree(&ctx->pdev->dev, ctx->message);  in img_ascii_lcd_display()
296 	ctx->message = new_msg;  in img_ascii_lcd_display()
297 	ctx->message_len = count;  in img_ascii_lcd_display()
298 	ctx->scroll_pos = 0;  in img_ascii_lcd_display()
301 	img_ascii_lcd_scroll((unsigned long)ctx);  in img_ascii_lcd_display()
320 	struct img_ascii_lcd_ctx *ctx = dev_get_drvdata(dev);  in message_show()  local
322 	return sprintf(buf, "%s\n", ctx->message);  in message_show()
339 	struct img_ascii_lcd_ctx *ctx = dev_get_drvdata(dev);  in message_store()  local
342 	err = img_ascii_lcd_display(ctx, buf, count);  in message_store()
361 	struct img_ascii_lcd_ctx *ctx;  in img_ascii_lcd_probe()  local
370 	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx) + cfg->num_chars,  in img_ascii_lcd_probe()
372 	if (!ctx)  in img_ascii_lcd_probe()
376 		ctx->regmap = syscon_node_to_regmap(pdev->dev.parent->of_node);  in img_ascii_lcd_probe()
377 		if (IS_ERR(ctx->regmap))  in img_ascii_lcd_probe()
378 			return PTR_ERR(ctx->regmap);  in img_ascii_lcd_probe()
381 					 &ctx->offset))  in img_ascii_lcd_probe()
385 		ctx->base = devm_ioremap_resource(&pdev->dev, res);  in img_ascii_lcd_probe()
386 		if (IS_ERR(ctx->base))  in img_ascii_lcd_probe()
387 			return PTR_ERR(ctx->base);  in img_ascii_lcd_probe()
390 	ctx->pdev = pdev;  in img_ascii_lcd_probe()
391 	ctx->cfg = cfg;  in img_ascii_lcd_probe()
392 	ctx->message = NULL;  in img_ascii_lcd_probe()
393 	ctx->scroll_pos = 0;  in img_ascii_lcd_probe()
394 	ctx->scroll_rate = HZ / 2;  in img_ascii_lcd_probe()
397 	init_timer(&ctx->timer);  in img_ascii_lcd_probe()
398 	ctx->timer.function = img_ascii_lcd_scroll;  in img_ascii_lcd_probe()
399 	ctx->timer.data = (unsigned long)ctx;  in img_ascii_lcd_probe()
401 	platform_set_drvdata(pdev, ctx);  in img_ascii_lcd_probe()
404 	err = img_ascii_lcd_display(ctx, "Linux " UTS_RELEASE "       ", -1);  in img_ascii_lcd_probe()
414 	del_timer_sync(&ctx->timer);  in img_ascii_lcd_probe()
429 	struct img_ascii_lcd_ctx *ctx = platform_get_drvdata(pdev);  in img_ascii_lcd_remove()  local
432 	del_timer_sync(&ctx->timer);  in img_ascii_lcd_remove()