[PATCH 1/7] usb: typec: ucsi: add get_fw_info function

[Ajay Gupta]

Function is to get the details of ccg firmware and device version.

Signed-off-by: Ajay Gupta <aj...@nvidia.com>
---
 drivers/usb/typec/ucsi/ucsi_ccg.c | 76 ++++++++++++++++++++++++++++++-
 1 file changed, 74 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c 
b/drivers/usb/typec/ucsi/ucsi_ccg.c
index de8a43bdff68..4d35279ab853 100644
--- a/drivers/usb/typec/ucsi/ucsi_ccg.c
+++ b/drivers/usb/typec/ucsi/ucsi_ccg.c
@@ -17,15 +17,46 @@
 #include <asm/unaligned.h>
 #include "ucsi.h"
 
+struct ccg_dev_info {
+       u8 fw_mode:2;
+       u8 two_pd_ports:2;
+       u8 row_size_256:2;
+       u8:1; /* reserved */
+       u8 hpi_v2_mode:1;
+       u8 bl_mode:1;
+       u8 cfgtbl_invalid:1;
+       u8 fw1_invalid:1;
+       u8 fw2_invalid:1;
+       u8:4; /* reserved */
+       u16 silicon_id;
+       u16 bl_last_row;
+} __packed;
+
+struct version_format {
+       u16 build;
+       u8 patch;
+       u8 min:4;
+       u8 maj:4;
+};
+
+struct version_info {
+       struct version_format base;
+       struct version_format app;
+};
+
 struct ucsi_ccg {
        struct device *dev;
        struct ucsi *ucsi;
        struct ucsi_ppm ppm;
        struct i2c_client *client;
+       struct ccg_dev_info info;
 };
 
-#define CCGX_RAB_INTR_REG                      0x06
-#define CCGX_RAB_UCSI_CONTROL                  0x39
+#define CCGX_RAB_DEVICE_MODE                   0x0000
+#define CCGX_RAB_INTR_REG                      0x0006
+#define CCGX_RAB_READ_ALL_VER                  0x0010
+#define CCGX_RAB_READ_FW2_VER                  0x0020
+#define CCGX_RAB_UCSI_CONTROL                  0x0039
 #define CCGX_RAB_UCSI_CONTROL_START            BIT(0)
 #define CCGX_RAB_UCSI_CONTROL_STOP             BIT(1)
 #define CCGX_RAB_UCSI_DATA_BLOCK(offset)       (0xf000 | ((offset) & 0xff))
@@ -220,6 +251,41 @@ static irqreturn_t ccg_irq_handler(int irq, void *data)
        return IRQ_HANDLED;
 }
 
+static int get_fw_info(struct ucsi_ccg *uc)
+{
+       struct device *dev = uc->dev;
+       struct version_info version[3];
+       struct version_info *v;
+       int err, i;
+
+       err = ccg_read(uc, CCGX_RAB_READ_ALL_VER, (u8 *)(&version),
+                      sizeof(version));
+       if (err < 0)
+               return err;
+
+       for (i = 1; i < ARRAY_SIZE(version); i++) {
+               v = &version[i];
+               dev_dbg(dev,
+                       "FW%d Version: %c%c v%x.%x%x, [Base %d.%d.%d.%d]\n",
+                       i, (v->app.build >> 8), (v->app.build & 0xFF),
+                       v->app.patch, v->app.maj, v->app.min,
+                       v->base.maj, v->base.min, v->base.patch,
+                       v->base.build);
+       }
+
+       err = ccg_read(uc, CCGX_RAB_DEVICE_MODE, (u8 *)(&uc->info),
+                      sizeof(uc->info));
+       if (err < 0)
+               return err;
+
+       dev_dbg(dev, "fw_mode: %d\n", uc->info.fw_mode);
+       dev_dbg(dev, "fw1_invalid: %d\n", uc->info.fw1_invalid);
+       dev_dbg(dev, "fw2_invalid: %d\n", uc->info.fw2_invalid);
+       dev_dbg(dev, "silicon_id: 0x%04x\n", uc->info.silicon_id);
+
+       return 0;
+}
+
 static int ucsi_ccg_probe(struct i2c_client *client,
                          const struct i2c_device_id *id)
 {
@@ -248,6 +314,12 @@ static int ucsi_ccg_probe(struct i2c_client *client,
                return status;
        }
 
+       status = get_fw_info(uc);
+       if (status < 0) {
+               dev_err(uc->dev, "get_fw_info failed - %d\n", status);
+               return status;
+       }
+
        status = devm_request_threaded_irq(dev, client->irq, NULL,
                                           ccg_irq_handler,
                                           IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
-- 
2.17.1