media: platform: qcom/iris: add support for vpu33

The IRIS acceleration found in the SM8650 platforms uses the vpu33
hardware version, and requires a slighly different reset and power off
sequences in order to properly get out of runtime suspend.

Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # x1e Dell
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

drivers/media/platform/qcom/iris/iris_vpu3x.c

@@ -4,20 +4,39 @@
  */
 
 #include <linux/iopoll.h>
+#include <linux/reset.h>
 
 #include "iris_instance.h"
 #include "iris_vpu_common.h"
 #include "iris_vpu_register_defines.h"
 
+#define WRAPPER_TZ_BASE_OFFS			0x000C0000
+#define AON_BASE_OFFS				0x000E0000
 #define AON_MVP_NOC_RESET			0x0001F000
 
+#define WRAPPER_DEBUG_BRIDGE_LPI_CONTROL	(WRAPPER_BASE_OFFS + 0x54)
+#define WRAPPER_DEBUG_BRIDGE_LPI_STATUS		(WRAPPER_BASE_OFFS + 0x58)
+#define WRAPPER_IRIS_CPU_NOC_LPI_CONTROL	(WRAPPER_BASE_OFFS + 0x5C)
+#define REQ_POWER_DOWN_PREP			BIT(0)
+#define WRAPPER_IRIS_CPU_NOC_LPI_STATUS		(WRAPPER_BASE_OFFS + 0x60)
 #define WRAPPER_CORE_CLOCK_CONFIG		(WRAPPER_BASE_OFFS + 0x88)
 #define CORE_CLK_RUN				0x0
 
+#define WRAPPER_TZ_CTL_AXI_CLOCK_CONFIG		(WRAPPER_TZ_BASE_OFFS + 0x14)
+#define CTL_AXI_CLK_HALT			BIT(0)
+#define CTL_CLK_HALT				BIT(1)
+
+#define WRAPPER_TZ_QNS4PDXFIFO_RESET		(WRAPPER_TZ_BASE_OFFS + 0x18)
+#define RESET_HIGH				BIT(0)
+
 #define CPU_CS_AHB_BRIDGE_SYNC_RESET		(CPU_CS_BASE_OFFS + 0x160)
 #define CORE_BRIDGE_SW_RESET			BIT(0)
 #define CORE_BRIDGE_HW_RESET_DISABLE		BIT(1)
 
+#define CPU_CS_X2RPMH				(CPU_CS_BASE_OFFS + 0x168)
+#define MSK_SIGNAL_FROM_TENSILICA		BIT(0)
+#define MSK_CORE_POWER_ON			BIT(1)
+
 #define AON_WRAPPER_MVP_NOC_RESET_REQ		(AON_MVP_NOC_RESET + 0x000)
 #define VIDEO_NOC_RESET_REQ			(BIT(0) | BIT(1))
 
@@ -25,7 +44,16 @@
 
 #define VCODEC_SS_IDLE_STATUSN			(VCODEC_BASE_OFFS + 0x70)
 
-static bool iris_vpu3_hw_power_collapsed(struct iris_core *core)
+#define AON_WRAPPER_MVP_NOC_LPI_CONTROL		(AON_BASE_OFFS)
+#define AON_WRAPPER_MVP_NOC_LPI_STATUS		(AON_BASE_OFFS + 0x4)
+
+#define AON_WRAPPER_MVP_NOC_CORE_SW_RESET	(AON_BASE_OFFS + 0x18)
+#define SW_RESET				BIT(0)
+#define AON_WRAPPER_MVP_NOC_CORE_CLK_CONTROL	(AON_BASE_OFFS + 0x20)
+#define NOC_HALT				BIT(0)
+#define AON_WRAPPER_SPARE			(AON_BASE_OFFS + 0x28)
+
+static bool iris_vpu3x_hw_power_collapsed(struct iris_core *core)
 {
 	u32 value, pwr_status;
 
@@ -40,7 +68,7 @@ static void iris_vpu3_power_off_hardware(struct iris_core *core)
 	u32 reg_val = 0, value, i;
 	int ret;
 
-	if (iris_vpu3_hw_power_collapsed(core))
+	if (iris_vpu3x_hw_power_collapsed(core))
 		goto disable_power;
 
 	dev_err(core->dev, "video hw is power on\n");
@@ -79,7 +107,125 @@ static void iris_vpu3_power_off_hardware(struct iris_core *core)
 	iris_vpu_power_off_hw(core);
 }
 
-static u64 iris_vpu3_calculate_frequency(struct iris_inst *inst, size_t data_size)
+static void iris_vpu33_power_off_hardware(struct iris_core *core)
+{
+	u32 reg_val = 0, value, i;
+	int ret;
+
+	if (iris_vpu3x_hw_power_collapsed(core))
+		goto disable_power;
+
+	dev_err(core->dev, "video hw is power on\n");
+
+	value = readl(core->reg_base + WRAPPER_CORE_CLOCK_CONFIG);
+	if (value)
+		writel(CORE_CLK_RUN, core->reg_base + WRAPPER_CORE_CLOCK_CONFIG);
+
+	for (i = 0; i < core->iris_platform_data->num_vpp_pipe; i++) {
+		ret = readl_poll_timeout(core->reg_base + VCODEC_SS_IDLE_STATUSN + 4 * i,
+					 reg_val, reg_val & 0x400000, 2000, 20000);
+		if (ret)
+			goto disable_power;
+	}
+
+	ret = readl_poll_timeout(core->reg_base + AON_WRAPPER_MVP_NOC_LPI_STATUS,
+				 reg_val, reg_val & BIT(0), 200, 2000);
+	if (ret)
+		goto disable_power;
+
+	/* set MNoC to low power, set PD_NOC_QREQ (bit 0) */
+	writel(BIT(0), core->reg_base + AON_WRAPPER_MVP_NOC_LPI_CONTROL);
+
+	writel(CORE_BRIDGE_SW_RESET | CORE_BRIDGE_HW_RESET_DISABLE,
+	       core->reg_base + CPU_CS_AHB_BRIDGE_SYNC_RESET);
+	writel(CORE_BRIDGE_HW_RESET_DISABLE, core->reg_base + CPU_CS_AHB_BRIDGE_SYNC_RESET);
+	writel(0x0, core->reg_base + CPU_CS_AHB_BRIDGE_SYNC_RESET);
+
+disable_power:
+	iris_vpu_power_off_hw(core);
+}
+
+static int iris_vpu33_power_off_controller(struct iris_core *core)
+{
+	u32 xo_rst_tbl_size = core->iris_platform_data->controller_rst_tbl_size;
+	u32 clk_rst_tbl_size = core->iris_platform_data->clk_rst_tbl_size;
+	u32 val = 0;
+	int ret;
+
+	writel(MSK_SIGNAL_FROM_TENSILICA | MSK_CORE_POWER_ON, core->reg_base + CPU_CS_X2RPMH);
+
+	writel(REQ_POWER_DOWN_PREP, core->reg_base + WRAPPER_IRIS_CPU_NOC_LPI_CONTROL);
+
+	ret = readl_poll_timeout(core->reg_base + WRAPPER_IRIS_CPU_NOC_LPI_STATUS,
+				 val, val & BIT(0), 200, 2000);
+	if (ret)
+		goto disable_power;
+
+	writel(0x0, core->reg_base + WRAPPER_DEBUG_BRIDGE_LPI_CONTROL);
+
+	ret = readl_poll_timeout(core->reg_base + WRAPPER_DEBUG_BRIDGE_LPI_STATUS,
+				 val, val == 0, 200, 2000);
+	if (ret)
+		goto disable_power;
+
+	writel(CTL_AXI_CLK_HALT | CTL_CLK_HALT,
+	       core->reg_base + WRAPPER_TZ_CTL_AXI_CLOCK_CONFIG);
+	writel(RESET_HIGH, core->reg_base + WRAPPER_TZ_QNS4PDXFIFO_RESET);
+	writel(0x0, core->reg_base + WRAPPER_TZ_QNS4PDXFIFO_RESET);
+	writel(0x0, core->reg_base + WRAPPER_TZ_CTL_AXI_CLOCK_CONFIG);
+
+	reset_control_bulk_reset(clk_rst_tbl_size, core->resets);
+
+	/* Disable MVP NoC clock */
+	val = readl(core->reg_base + AON_WRAPPER_MVP_NOC_CORE_CLK_CONTROL);
+	val |= NOC_HALT;
+	writel(val, core->reg_base + AON_WRAPPER_MVP_NOC_CORE_CLK_CONTROL);
+
+	/* enable MVP NoC reset */
+	val = readl(core->reg_base + AON_WRAPPER_MVP_NOC_CORE_SW_RESET);
+	val |= SW_RESET;
+	writel(val, core->reg_base + AON_WRAPPER_MVP_NOC_CORE_SW_RESET);
+
+	/* poll AON spare register bit0 to become zero with 50ms timeout */
+	ret = readl_poll_timeout(core->reg_base + AON_WRAPPER_SPARE,
+				 val, (val & BIT(0)) == 0, 1000, 50000);
+	if (ret)
+		goto disable_power;
+
+	/* enable bit(1) to avoid cvp noc xo reset */
+	val = readl(core->reg_base + AON_WRAPPER_SPARE);
+	val |= BIT(1);
+	writel(val, core->reg_base + AON_WRAPPER_SPARE);
+
+	reset_control_bulk_assert(xo_rst_tbl_size, core->controller_resets);
+
+	/* De-assert MVP NoC reset */
+	val = readl(core->reg_base + AON_WRAPPER_MVP_NOC_CORE_SW_RESET);
+	val &= ~SW_RESET;
+	writel(val, core->reg_base + AON_WRAPPER_MVP_NOC_CORE_SW_RESET);
+
+	usleep_range(80, 100);
+
+	reset_control_bulk_deassert(xo_rst_tbl_size, core->controller_resets);
+
+	/* reset AON spare register */
+	writel(0, core->reg_base + AON_WRAPPER_SPARE);
+
+	/* Enable MVP NoC clock */
+	val = readl(core->reg_base + AON_WRAPPER_MVP_NOC_CORE_CLK_CONTROL);
+	val &= ~NOC_HALT;
+	writel(val, core->reg_base + AON_WRAPPER_MVP_NOC_CORE_CLK_CONTROL);
+
+	iris_disable_unprepare_clock(core, IRIS_CTRL_CLK);
+
+disable_power:
+	iris_disable_power_domains(core, core->pmdomain_tbl->pd_devs[IRIS_CTRL_POWER_DOMAIN]);
+	iris_disable_unprepare_clock(core, IRIS_AXI_CLK);
+
+	return 0;
+}
+
+static u64 iris_vpu3x_calculate_frequency(struct iris_inst *inst, size_t data_size)
 {
 	struct platform_inst_caps *caps = inst->core->iris_platform_data->inst_caps;
 	struct v4l2_format *inp_f = inst->fmt_src;
@@ -119,5 +265,11 @@ static u64 iris_vpu3_calculate_frequency(struct iris_inst *inst, size_t data_siz
 const struct vpu_ops iris_vpu3_ops = {
 	.power_off_hw = iris_vpu3_power_off_hardware,
 	.power_off_controller = iris_vpu_power_off_controller,
-	.calc_freq = iris_vpu3_calculate_frequency,
+	.calc_freq = iris_vpu3x_calculate_frequency,
+};
+
+const struct vpu_ops iris_vpu33_ops = {
+	.power_off_hw = iris_vpu33_power_off_hardware,
+	.power_off_controller = iris_vpu33_power_off_controller,
+	.calc_freq = iris_vpu3x_calculate_frequency,
 };

drivers/media/platform/qcom/iris/iris_vpu_common.h

@@ -10,6 +10,7 @@ struct iris_core;
 
 extern const struct vpu_ops iris_vpu2_ops;
 extern const struct vpu_ops iris_vpu3_ops;
+extern const struct vpu_ops iris_vpu33_ops;
 
 struct vpu_ops {
 	void (*power_off_hw)(struct iris_core *core);