38 #define DRIVER_NAME "imx-ldb"
66 	struct imx_ldb *ldb;  member
68 	/* Defines what is connected to the ldb, only one at a time */
113 	struct imx_ldb *ldb = imx_ldb_ch->ldb;  in imx_ldb_ch_set_bus_format()  local
114 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;  in imx_ldb_ch_set_bus_format()
121 			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24;  in imx_ldb_ch_set_bus_format()
123 			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24;  in imx_ldb_ch_set_bus_format()
127 			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH0_24 |  in imx_ldb_ch_set_bus_format()
130 			ldb->ldb_ctrl |= LDB_DATA_WIDTH_CH1_24 |  in imx_ldb_ch_set_bus_format()
168 static void imx_ldb_set_clock(struct imx_ldb *ldb, int mux, int chno,  in imx_ldb_set_clock()  argument
173 	dev_dbg(ldb->dev, "%s: now: %ld want: %ld\n", __func__,  in imx_ldb_set_clock()
174 			clk_get_rate(ldb->clk_pll[chno]), serial_clk);  in imx_ldb_set_clock()
175 	clk_set_rate(ldb->clk_pll[chno], serial_clk);  in imx_ldb_set_clock()
177 	dev_dbg(ldb->dev, "%s after: %ld\n", __func__,  in imx_ldb_set_clock()
178 			clk_get_rate(ldb->clk_pll[chno]));  in imx_ldb_set_clock()
180 	dev_dbg(ldb->dev, "%s: now: %ld want: %ld\n", __func__,  in imx_ldb_set_clock()
181 			clk_get_rate(ldb->clk[chno]),  in imx_ldb_set_clock()
183 	clk_set_rate(ldb->clk[chno], di_clk);  in imx_ldb_set_clock()
185 	dev_dbg(ldb->dev, "%s after: %ld\n", __func__,  in imx_ldb_set_clock()
186 			clk_get_rate(ldb->clk[chno]));  in imx_ldb_set_clock()
188 	/* set display clock mux to LDB input clock */  in imx_ldb_set_clock()
189 	ret = clk_set_parent(ldb->clk_sel[mux], ldb->clk[chno]);  in imx_ldb_set_clock()
191 		dev_err(ldb->dev,  in imx_ldb_set_clock()
199 	struct imx_ldb *ldb = imx_ldb_ch->ldb;  in imx_ldb_encoder_enable()  local
200 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;  in imx_ldb_encoder_enable()
203 	if (mux < 0 || mux >= ARRAY_SIZE(ldb->clk_sel)) {  in imx_ldb_encoder_enable()
204 		dev_warn(ldb->dev, "%s: invalid mux %d\n", __func__, mux);  in imx_ldb_encoder_enable()
211 		clk_set_parent(ldb->clk_sel[mux], ldb->clk[0]);  in imx_ldb_encoder_enable()
212 		clk_set_parent(ldb->clk_sel[mux], ldb->clk[1]);  in imx_ldb_encoder_enable()
214 		clk_prepare_enable(ldb->clk[0]);  in imx_ldb_encoder_enable()
215 		clk_prepare_enable(ldb->clk[1]);  in imx_ldb_encoder_enable()
217 		clk_set_parent(ldb->clk_sel[mux], ldb->clk[imx_ldb_ch->chno]);  in imx_ldb_encoder_enable()
220 	if (imx_ldb_ch == &ldb->channel[0] || dual) {  in imx_ldb_encoder_enable()
221 		ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK;  in imx_ldb_encoder_enable()
222 		if (mux == 0 || ldb->lvds_mux)  in imx_ldb_encoder_enable()
223 			ldb->ldb_ctrl |= LDB_CH0_MODE_EN_TO_DI0;  in imx_ldb_encoder_enable()
225 			ldb->ldb_ctrl |= LDB_CH0_MODE_EN_TO_DI1;  in imx_ldb_encoder_enable()
227 	if (imx_ldb_ch == &ldb->channel[1] || dual) {  in imx_ldb_encoder_enable()
228 		ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK;  in imx_ldb_encoder_enable()
229 		if (mux == 1 || ldb->lvds_mux)  in imx_ldb_encoder_enable()
230 			ldb->ldb_ctrl |= LDB_CH1_MODE_EN_TO_DI1;  in imx_ldb_encoder_enable()
232 			ldb->ldb_ctrl |= LDB_CH1_MODE_EN_TO_DI0;  in imx_ldb_encoder_enable()
235 	if (ldb->lvds_mux) {  in imx_ldb_encoder_enable()
238 		if (imx_ldb_ch == &ldb->channel[0])  in imx_ldb_encoder_enable()
239 			lvds_mux = &ldb->lvds_mux[0];  in imx_ldb_encoder_enable()
240 		else if (imx_ldb_ch == &ldb->channel[1])  in imx_ldb_encoder_enable()
241 			lvds_mux = &ldb->lvds_mux[1];  in imx_ldb_encoder_enable()
243 		regmap_update_bits(ldb->regmap, lvds_mux->reg, lvds_mux->mask,  in imx_ldb_encoder_enable()
247 	regmap_write(ldb->regmap, IOMUXC_GPR2, ldb->ldb_ctrl);  in imx_ldb_encoder_enable()
259 	struct imx_ldb *ldb = imx_ldb_ch->ldb;  in imx_ldb_encoder_atomic_mode_set()  local
260 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;  in imx_ldb_encoder_atomic_mode_set()
266 	if (mux < 0 || mux >= ARRAY_SIZE(ldb->clk_sel)) {  in imx_ldb_encoder_atomic_mode_set()
267 		dev_warn(ldb->dev, "%s: invalid mux %d\n", __func__, mux);  in imx_ldb_encoder_atomic_mode_set()
272 		dev_warn(ldb->dev,  in imx_ldb_encoder_atomic_mode_set()
276 		dev_warn(ldb->dev,  in imx_ldb_encoder_atomic_mode_set()
281 		dev_warn(ldb->dev,  in imx_ldb_encoder_atomic_mode_set()
287 		imx_ldb_set_clock(ldb, mux, 0, serial_clk, di_clk);  in imx_ldb_encoder_atomic_mode_set()
288 		imx_ldb_set_clock(ldb, mux, 1, serial_clk, di_clk);  in imx_ldb_encoder_atomic_mode_set()
291 		imx_ldb_set_clock(ldb, mux, imx_ldb_ch->chno, serial_clk,  in imx_ldb_encoder_atomic_mode_set()
296 	if (imx_ldb_ch == &ldb->channel[0] || dual) {  in imx_ldb_encoder_atomic_mode_set()
298 			ldb->ldb_ctrl |= LDB_DI0_VS_POL_ACT_LOW;  in imx_ldb_encoder_atomic_mode_set()
300 			ldb->ldb_ctrl &= ~LDB_DI0_VS_POL_ACT_LOW;  in imx_ldb_encoder_atomic_mode_set()
302 	if (imx_ldb_ch == &ldb->channel[1] || dual) {  in imx_ldb_encoder_atomic_mode_set()
304 			ldb->ldb_ctrl |= LDB_DI1_VS_POL_ACT_LOW;  in imx_ldb_encoder_atomic_mode_set()
306 			ldb->ldb_ctrl &= ~LDB_DI1_VS_POL_ACT_LOW;  in imx_ldb_encoder_atomic_mode_set()
322 	struct imx_ldb *ldb = imx_ldb_ch->ldb;  in imx_ldb_encoder_disable()  local
323 	int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;  in imx_ldb_encoder_disable()
328 	if (imx_ldb_ch == &ldb->channel[0] || dual)  in imx_ldb_encoder_disable()
329 		ldb->ldb_ctrl &= ~LDB_CH0_MODE_EN_MASK;  in imx_ldb_encoder_disable()
330 	if (imx_ldb_ch == &ldb->channel[1] || dual)  in imx_ldb_encoder_disable()
331 		ldb->ldb_ctrl &= ~LDB_CH1_MODE_EN_MASK;  in imx_ldb_encoder_disable()
333 	regmap_write(ldb->regmap, IOMUXC_GPR2, ldb->ldb_ctrl);  in imx_ldb_encoder_disable()
336 		clk_disable_unprepare(ldb->clk[0]);  in imx_ldb_encoder_disable()
337 		clk_disable_unprepare(ldb->clk[1]);  in imx_ldb_encoder_disable()
340 	if (ldb->lvds_mux) {  in imx_ldb_encoder_disable()
343 		if (imx_ldb_ch == &ldb->channel[0])  in imx_ldb_encoder_disable()
344 			lvds_mux = &ldb->lvds_mux[0];  in imx_ldb_encoder_disable()
345 		else if (imx_ldb_ch == &ldb->channel[1])  in imx_ldb_encoder_disable()
346 			lvds_mux = &ldb->lvds_mux[1];  in imx_ldb_encoder_disable()
348 		regmap_read(ldb->regmap, lvds_mux->reg, &mux);  in imx_ldb_encoder_disable()
352 		mux = (imx_ldb_ch == &ldb->channel[0]) ? 0 : 1;  in imx_ldb_encoder_disable()
356 	ret = clk_set_parent(ldb->clk_sel[mux], ldb->clk_parent[mux]);  in imx_ldb_encoder_disable()
358 		dev_err(ldb->dev,  in imx_ldb_encoder_disable()
420 static int imx_ldb_get_clk(struct imx_ldb *ldb, int chno)  in imx_ldb_get_clk()  argument
425 	ldb->clk[chno] = devm_clk_get(ldb->dev, clkname);  in imx_ldb_get_clk()
426 	if (IS_ERR(ldb->clk[chno]))  in imx_ldb_get_clk()
427 		return PTR_ERR(ldb->clk[chno]);  in imx_ldb_get_clk()
430 	ldb->clk_pll[chno] = devm_clk_get(ldb->dev, clkname);  in imx_ldb_get_clk()
432 	return PTR_ERR_OR_ZERO(ldb->clk_pll[chno]);  in imx_ldb_get_clk()
438 	struct imx_ldb *ldb = imx_ldb_ch->ldb;  in imx_ldb_register()  local
457 	ret = imx_ldb_get_clk(ldb, imx_ldb_ch->chno);  in imx_ldb_register()
461 	if (ldb->ldb_ctrl & LDB_SPLIT_MODE_EN) {  in imx_ldb_register()
462 		ret = imx_ldb_get_clk(ldb, 1);  in imx_ldb_register()
477 		 * historical reasons, the ldb driver can also work without  in imx_ldb_register()
540  * For a device declaring compatible = "fsl,imx6q-ldb", "fsl,imx53-ldb",
543  * entries (in this case fsl,imx53-ldb) need to be ordered last.
546 	{ .compatible = "fsl,imx6q-ldb", .data = imx6q_lvds_mux, },
547 	{ .compatible = "fsl,imx53-ldb", .data = NULL, },
603 		if (!channel->ldb)  in imx_ldb_bind()
638 	/* disable LDB by resetting the control register to POR default */  in imx_ldb_probe()
690 		channel->ldb = imx_ldb;  in imx_ldb_probe()