50 	struct zx_vga *vga = to_zx_vga(encoder);  in zx_vga_encoder_enable()  local
51 	struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl;  in zx_vga_encoder_enable()
62 	struct zx_vga *vga = to_zx_vga(encoder);  in zx_vga_encoder_disable()  local
63 	struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl;  in zx_vga_encoder_disable()
78 	struct zx_vga *vga = to_zx_vga(connector);  in zx_vga_connector_get_modes()  local
86 	zx_writel(vga->mmio + VGA_AUTO_DETECT_SEL, 0);  in zx_vga_connector_get_modes()
88 	edid = drm_get_edid(connector, &vga->ddc->adap);  in zx_vga_connector_get_modes()
96 		zx_writel(vga->mmio + VGA_AUTO_DETECT_SEL,  in zx_vga_connector_get_modes()
98 		vga->connected = false;  in zx_vga_connector_get_modes()
106 	zx_writel(vga->mmio + VGA_AUTO_DETECT_SEL, VGA_DETECT_SEL_HAS_DEVICE);  in zx_vga_connector_get_modes()
130 	struct zx_vga *vga = to_zx_vga(connector);  in zx_vga_connector_detect()  local
132 	return vga->connected ? connector_status_connected :  in zx_vga_connector_detect()
145 static int zx_vga_register(struct drm_device *drm, struct zx_vga *vga)  in zx_vga_register()  argument
147 	struct drm_encoder *encoder = &vga->encoder;  in zx_vga_register()
148 	struct drm_connector *connector = &vga->connector;  in zx_vga_register()
149 	struct device *dev = vga->dev;  in zx_vga_register()
162 	vga->connector.polled = DRM_CONNECTOR_POLL_HPD;  in zx_vga_register()
167 					  &vga->ddc->adap);  in zx_vga_register()
190 static int zx_vga_pwrctrl_init(struct zx_vga *vga)  in zx_vga_pwrctrl_init()  argument
192 	struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl;  in zx_vga_pwrctrl_init()
193 	struct device *dev = vga->dev;  in zx_vga_pwrctrl_init()
218 static int zx_vga_i2c_read(struct zx_vga *vga, struct i2c_msg *msg)  in zx_vga_i2c_read()  argument
225 	reinit_completion(&vga->complete);  in zx_vga_i2c_read()
228 	zx_writel_mask(vga->mmio + VGA_CMD_CFG, VGA_CMD_COMBO, VGA_CMD_COMBO);  in zx_vga_i2c_read()
229 	zx_writel_mask(vga->mmio + VGA_CMD_CFG, VGA_CMD_RW, 0);  in zx_vga_i2c_read()
235 		zx_writel_mask(vga->mmio + VGA_RXF_CTRL, VGA_RX_FIFO_CLEAR,  in zx_vga_i2c_read()
239 		zx_writel(vga->mmio + VGA_SUB_ADDR, offset);  in zx_vga_i2c_read()
242 		zx_writel_mask(vga->mmio + VGA_CMD_CFG, VGA_CMD_TRANS,  in zx_vga_i2c_read()
245 		if (!wait_for_completion_timeout(&vga->complete,  in zx_vga_i2c_read()
247 			DRM_DEV_ERROR(vga->dev, "transfer timeout\n");  in zx_vga_i2c_read()
251 		cnt = zx_readl(vga->mmio + VGA_RXF_STATUS);  in zx_vga_i2c_read()
257 			*buf++ = zx_readl(vga->mmio + VGA_DATA);  in zx_vga_i2c_read()
266 static int zx_vga_i2c_write(struct zx_vga *vga, struct i2c_msg *msg)  in zx_vga_i2c_write()  argument
276 	zx_writel(vga->mmio + VGA_DEVICE_ADDR, msg->addr);  in zx_vga_i2c_write()
284 	struct zx_vga *vga = i2c_get_adapdata(adap);  in zx_vga_i2c_xfer()  local
285 	struct zx_vga_i2c *ddc = vga->ddc;  in zx_vga_i2c_xfer()
293 			ret = zx_vga_i2c_read(vga, &msgs[i]);  in zx_vga_i2c_xfer()
295 			ret = zx_vga_i2c_write(vga, &msgs[i]);  in zx_vga_i2c_xfer()
319 static int zx_vga_ddc_register(struct zx_vga *vga)  in zx_vga_ddc_register()  argument
321 	struct device *dev = vga->dev;  in zx_vga_ddc_register()
330 	vga->ddc = ddc;  in zx_vga_ddc_register()
346 	i2c_set_adapdata(adap, vga);  in zx_vga_ddc_register()
353 	struct zx_vga *vga = dev_id;  in zx_vga_irq_thread()  local
355 	drm_helper_hpd_irq_event(vga->connector.dev);  in zx_vga_irq_thread()
362 	struct zx_vga *vga = dev_id;  in zx_vga_irq_handler()  local
365 	status = zx_readl(vga->mmio + VGA_I2C_STATUS);  in zx_vga_irq_handler()
368 	zx_writel_mask(vga->mmio + VGA_I2C_STATUS, VGA_CLEAR_IRQ,  in zx_vga_irq_handler()
378 		vga->connected = true;  in zx_vga_irq_handler()
383 		zx_writel(vga->mmio + VGA_AUTO_DETECT_SEL,  in zx_vga_irq_handler()
385 		vga->connected = false;  in zx_vga_irq_handler()
390 		complete(&vga->complete);  in zx_vga_irq_handler()
397 static void zx_vga_hw_init(struct zx_vga *vga)  in zx_vga_hw_init()  argument
399 	unsigned long ref = clk_get_rate(vga->i2c_wclk);  in zx_vga_hw_init()
407 	zx_writel(vga->mmio + VGA_CLK_DIV_FS, div);  in zx_vga_hw_init()
410 	zx_writel(vga->mmio + VGA_AUTO_DETECT_PARA, 0x80);  in zx_vga_hw_init()
411 	zx_writel(vga->mmio + VGA_AUTO_DETECT_SEL, VGA_DETECT_SEL_NO_DEVICE);  in zx_vga_hw_init()
417 	zx_writel(vga->mmio + VGA_DEVICE_ADDR, DDC_ADDR);  in zx_vga_hw_init()
418 	zx_writel_mask(vga->mmio + VGA_CMD_CFG, VGA_CMD_TRANS, VGA_CMD_TRANS);  in zx_vga_hw_init()
426 	struct zx_vga *vga;  in zx_vga_bind()  local
430 	vga = devm_kzalloc(dev, sizeof(*vga), GFP_KERNEL);  in zx_vga_bind()
431 	if (!vga)  in zx_vga_bind()
434 	vga->dev = dev;  in zx_vga_bind()
435 	dev_set_drvdata(dev, vga);  in zx_vga_bind()
438 	vga->mmio = devm_ioremap_resource(dev, res);  in zx_vga_bind()
439 	if (IS_ERR(vga->mmio))  in zx_vga_bind()
440 		return PTR_ERR(vga->mmio);  in zx_vga_bind()
446 	vga->i2c_wclk = devm_clk_get(dev, "i2c_wclk");  in zx_vga_bind()
447 	if (IS_ERR(vga->i2c_wclk)) {  in zx_vga_bind()
448 		ret = PTR_ERR(vga->i2c_wclk);  in zx_vga_bind()
453 	ret = zx_vga_pwrctrl_init(vga);  in zx_vga_bind()
459 	ret = zx_vga_ddc_register(vga);  in zx_vga_bind()
465 	ret = zx_vga_register(drm, vga);  in zx_vga_bind()
471 	init_completion(&vga->complete);  in zx_vga_bind()
475 					dev_name(dev), vga);  in zx_vga_bind()
481 	ret = clk_prepare_enable(vga->i2c_wclk);  in zx_vga_bind()
485 	zx_vga_hw_init(vga);  in zx_vga_bind()
493 	struct zx_vga *vga = dev_get_drvdata(dev);  in zx_vga_unbind()  local
495 	clk_disable_unprepare(vga->i2c_wclk);  in zx_vga_unbind()