ptp: clockmatrix: Rework clockmatrix version information.

Simplify and fix the version information displayed by the driver.
The new info better relects what is needed to support the hardware.

Prev:
Version: 4.8.0, Pipeline 22169 0x4001, Rev 0, Bond 5, CSR 311, IRQ 2

New:
Version: 4.8.0, Id: 0x4001  Hw Rev: 5  OTP Config Select: 15

- Remove pipeline, CSR and IRQ because version x.y.z already incorporates
  this information.
- Remove bond number because it is not used.
- Remove rev number because register was not implemented, always 0
- Add HW Rev ID register to replace rev number
- Add OTP config select to show the user configuration chosen by
  the configurable GPIO pins on start-up

Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/ptp/idt8a340_reg.h b/drivers/ptp/idt8a340_reg.h
index 9263bc3..69eedda 100644 (file)
--- a/drivers/ptp/idt8a340_reg.h
+++ b/drivers/ptp/idt8a340_reg.h
@@ -77,6 +77,8 @@
 #define JTAG_DEVICE_ID                    0x001c
 #define PRODUCT_ID                        0x001e
 
+#define OTP_SCSR_CONFIG_SELECT            0x0022
+
 #define STATUS                            0xc03c
 #define USER_GPIO0_TO_7_STATUS            0x008a
 #define USER_GPIO8_TO_15_STATUS           0x008b

diff --git a/drivers/ptp/ptp_clockmatrix.c b/drivers/ptp/ptp_clockmatrix.c
index e858367..032e112 100644 (file)
--- a/drivers/ptp/ptp_clockmatrix.c
+++ b/drivers/ptp/ptp_clockmatrix.c
@@ -405,6 +405,7 @@ static int _idtcm_set_dpll_tod(struct idtcm_channel *channel,
        if (wr_trig == HW_TOD_WR_TRIG_SEL_MSB) {
 
                if (idtcm->calculate_overhead_flag) {
+                       /* Assumption: I2C @ 400KHz */
                        total_overhead_ns =  ktime_to_ns(ktime_get_raw()
                                                         - idtcm->start_time)
                                             + idtcm->tod_write_overhead_ns
@@ -596,44 +597,7 @@ static int idtcm_state_machine_reset(struct idtcm *idtcm)
 
 static int idtcm_read_hw_rev_id(struct idtcm *idtcm, u8 *hw_rev_id)
 {
-       return idtcm_read(idtcm,
-                         GENERAL_STATUS,
-                         HW_REV_ID,
-                         hw_rev_id,
-                         sizeof(u8));
-}
-
-static int idtcm_read_bond_id(struct idtcm *idtcm, u8 *bond_id)
-{
-       return idtcm_read(idtcm,
-                         GENERAL_STATUS,
-                         BOND_ID,
-                         bond_id,
-                         sizeof(u8));
-}
-
-static int idtcm_read_hw_csr_id(struct idtcm *idtcm, u16 *hw_csr_id)
-{
-       int err;
-       u8 buf[2] = {0};
-
-       err = idtcm_read(idtcm, GENERAL_STATUS, HW_CSR_ID, buf, sizeof(buf));
-
-       *hw_csr_id = (buf[1] << 8) | buf[0];
-
-       return err;
-}
-
-static int idtcm_read_hw_irq_id(struct idtcm *idtcm, u16 *hw_irq_id)
-{
-       int err;
-       u8 buf[2] = {0};
-
-       err = idtcm_read(idtcm, GENERAL_STATUS, HW_IRQ_ID, buf, sizeof(buf));
-
-       *hw_irq_id = (buf[1] << 8) | buf[0];
-
-       return err;
+       return idtcm_read(idtcm, HW_REVISION, REV_ID, hw_rev_id, sizeof(u8));
 }
 
 static int idtcm_read_product_id(struct idtcm *idtcm, u16 *product_id)
@@ -674,20 +638,11 @@ static int idtcm_read_hotfix_release(struct idtcm *idtcm, u8 *hotfix)
                          sizeof(u8));
 }
 
-static int idtcm_read_pipeline(struct idtcm *idtcm, u32 *pipeline)
+static int idtcm_read_otp_scsr_config_select(struct idtcm *idtcm,
+                                            u8 *config_select)
 {
-       int err;
-       u8 buf[4] = {0};
-
-       err = idtcm_read(idtcm,
-                        GENERAL_STATUS,
-                        PIPELINE_ID,
-                        &buf[0],
-                        sizeof(buf));
-
-       *pipeline = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
-
-       return err;
+       return idtcm_read(idtcm, GENERAL_STATUS, OTP_SCSR_CONFIG_SELECT,
+                         config_select, sizeof(u8));
 }
 
 static int process_pll_mask(struct idtcm *idtcm, u32 addr, u8 val, u8 *mask)
@@ -1078,28 +1033,22 @@ static void idtcm_display_version_info(struct idtcm *idtcm)
        u8 major;
        u8 minor;
        u8 hotfix;
-       u32 pipeline;
        u16 product_id;
-       u16 csr_id;
-       u16 irq_id;
        u8 hw_rev_id;
-       u8 bond_id;
+       u8 config_select;
+       char *fmt = "%d.%d.%d, Id: 0x%04x  HW Rev: %d  OTP Config Select: %d\n";
 
        idtcm_read_major_release(idtcm, &major);
        idtcm_read_minor_release(idtcm, &minor);
        idtcm_read_hotfix_release(idtcm, &hotfix);
-       idtcm_read_pipeline(idtcm, &pipeline);
 
        idtcm_read_product_id(idtcm, &product_id);
        idtcm_read_hw_rev_id(idtcm, &hw_rev_id);
-       idtcm_read_bond_id(idtcm, &bond_id);
-       idtcm_read_hw_csr_id(idtcm, &csr_id);
-       idtcm_read_hw_irq_id(idtcm, &irq_id);
-
-       dev_info(&idtcm->client->dev, "Version:  %d.%d.%d, Pipeline %u\t"
-                "0x%04x, Rev %d, Bond %d, CSR %d, IRQ %d\n",
-                major, minor, hotfix, pipeline,
-                product_id, hw_rev_id, bond_id, csr_id, irq_id);
+
+       idtcm_read_otp_scsr_config_select(idtcm, &config_select);
+
+       dev_info(&idtcm->client->dev, fmt, major, minor, hotfix,
+                product_id, hw_rev_id, config_select);
 }
 
 static const struct ptp_clock_info idtcm_caps = {