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-rw-r--r--drivers/i3c/master/dw-i3c-master.c2
-rw-r--r--drivers/i3c/master/i3c-master-cdns.c9
-rw-r--r--drivers/i3c/master/mipi-i3c-hci/cmd_v1.c1
-rw-r--r--drivers/i3c/master/mipi-i3c-hci/core.c14
-rw-r--r--drivers/i3c/master/mipi-i3c-hci/dma.c19
-rw-r--r--drivers/i3c/master/svc-i3c-master.c6
6 files changed, 30 insertions, 21 deletions
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 9332ae5f64..ef5751e91c 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -233,7 +233,7 @@ struct dw_i3c_xfer {
struct completion comp;
int ret;
unsigned int ncmds;
- struct dw_i3c_cmd cmds[];
+ struct dw_i3c_cmd cmds[] __counted_by(ncmds);
};
struct dw_i3c_i2c_dev_data {
diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c
index 8f1fda3c7a..c1627f3552 100644
--- a/drivers/i3c/master/i3c-master-cdns.c
+++ b/drivers/i3c/master/i3c-master-cdns.c
@@ -76,7 +76,8 @@
#define PRESCL_CTRL0 0x14
#define PRESCL_CTRL0_I2C(x) ((x) << 16)
#define PRESCL_CTRL0_I3C(x) (x)
-#define PRESCL_CTRL0_MAX GENMASK(9, 0)
+#define PRESCL_CTRL0_I3C_MAX GENMASK(9, 0)
+#define PRESCL_CTRL0_I2C_MAX GENMASK(15, 0)
#define PRESCL_CTRL1 0x18
#define PRESCL_CTRL1_PP_LOW_MASK GENMASK(15, 8)
@@ -387,7 +388,7 @@ struct cdns_i3c_xfer {
struct completion comp;
int ret;
unsigned int ncmds;
- struct cdns_i3c_cmd cmds[];
+ struct cdns_i3c_cmd cmds[] __counted_by(ncmds);
};
struct cdns_i3c_data {
@@ -1233,7 +1234,7 @@ static int cdns_i3c_master_bus_init(struct i3c_master_controller *m)
return -EINVAL;
pres = DIV_ROUND_UP(sysclk_rate, (bus->scl_rate.i3c * 4)) - 1;
- if (pres > PRESCL_CTRL0_MAX)
+ if (pres > PRESCL_CTRL0_I3C_MAX)
return -ERANGE;
bus->scl_rate.i3c = sysclk_rate / ((pres + 1) * 4);
@@ -1246,7 +1247,7 @@ static int cdns_i3c_master_bus_init(struct i3c_master_controller *m)
max_i2cfreq = bus->scl_rate.i2c;
pres = (sysclk_rate / (max_i2cfreq * 5)) - 1;
- if (pres > PRESCL_CTRL0_MAX)
+ if (pres > PRESCL_CTRL0_I2C_MAX)
return -ERANGE;
bus->scl_rate.i2c = sysclk_rate / ((pres + 1) * 5);
diff --git a/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c b/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c
index 6a781f89b0..2b2323aa67 100644
--- a/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c
+++ b/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c
@@ -332,6 +332,7 @@ static int hci_cmd_v1_daa(struct i3c_hci *hci)
CMD_A0_DEV_COUNT(1) |
CMD_A0_ROC | CMD_A0_TOC;
xfer->cmd_desc[1] = 0;
+ xfer->completion = &done;
hci->io->queue_xfer(hci, xfer, 1);
if (!wait_for_completion_timeout(&done, HZ) &&
hci->io->dequeue_xfer(hci, xfer, 1)) {
diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c
index 837af83c85..1ae56a5699 100644
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -161,10 +161,12 @@ static int i3c_hci_bus_init(struct i3c_master_controller *m)
static void i3c_hci_bus_cleanup(struct i3c_master_controller *m)
{
struct i3c_hci *hci = to_i3c_hci(m);
+ struct platform_device *pdev = to_platform_device(m->dev.parent);
DBG("");
reg_clear(HC_CONTROL, HC_CONTROL_BUS_ENABLE);
+ synchronize_irq(platform_get_irq(pdev, 0));
hci->io->cleanup(hci);
if (hci->cmd == &mipi_i3c_hci_cmd_v1)
mipi_i3c_hci_dat_v1.cleanup(hci);
@@ -172,8 +174,7 @@ static void i3c_hci_bus_cleanup(struct i3c_master_controller *m)
void mipi_i3c_hci_resume(struct i3c_hci *hci)
{
- /* the HC_CONTROL_RESUME bit is R/W1C so just read and write back */
- reg_write(HC_CONTROL, reg_read(HC_CONTROL));
+ reg_set(HC_CONTROL, HC_CONTROL_RESUME);
}
/* located here rather than pio.c because needed bits are in core reg space */
@@ -610,17 +611,17 @@ static int i3c_hci_init(struct i3c_hci *hci)
offset = FIELD_GET(DAT_TABLE_OFFSET, regval);
hci->DAT_regs = offset ? hci->base_regs + offset : NULL;
hci->DAT_entries = FIELD_GET(DAT_TABLE_SIZE, regval);
- hci->DAT_entry_size = FIELD_GET(DAT_ENTRY_SIZE, regval);
+ hci->DAT_entry_size = FIELD_GET(DAT_ENTRY_SIZE, regval) ? 0 : 8;
dev_info(&hci->master.dev, "DAT: %u %u-bytes entries at offset %#x\n",
- hci->DAT_entries, hci->DAT_entry_size * 4, offset);
+ hci->DAT_entries, hci->DAT_entry_size, offset);
regval = reg_read(DCT_SECTION);
offset = FIELD_GET(DCT_TABLE_OFFSET, regval);
hci->DCT_regs = offset ? hci->base_regs + offset : NULL;
hci->DCT_entries = FIELD_GET(DCT_TABLE_SIZE, regval);
- hci->DCT_entry_size = FIELD_GET(DCT_ENTRY_SIZE, regval);
+ hci->DCT_entry_size = FIELD_GET(DCT_ENTRY_SIZE, regval) ? 0 : 16;
dev_info(&hci->master.dev, "DCT: %u %u-bytes entries at offset %#x\n",
- hci->DCT_entries, hci->DCT_entry_size * 4, offset);
+ hci->DCT_entries, hci->DCT_entry_size, offset);
regval = reg_read(RING_HEADERS_SECTION);
offset = FIELD_GET(RING_HEADERS_OFFSET, regval);
@@ -787,6 +788,7 @@ static struct platform_driver i3c_hci_driver = {
},
};
module_platform_driver(i3c_hci_driver);
+MODULE_ALIAS("platform:mipi-i3c-hci");
MODULE_AUTHOR("Nicolas Pitre <npitre@baylibre.com>");
MODULE_DESCRIPTION("MIPI I3C HCI driver");
diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c
index 71b5dbe45c..c805a84973 100644
--- a/drivers/i3c/master/mipi-i3c-hci/dma.c
+++ b/drivers/i3c/master/mipi-i3c-hci/dma.c
@@ -139,7 +139,7 @@ struct hci_rh_data {
struct hci_rings_data {
unsigned int total;
- struct hci_rh_data headers[];
+ struct hci_rh_data headers[] __counted_by(total);
};
struct hci_dma_dev_ibi_data {
@@ -229,6 +229,9 @@ static int hci_dma_init(struct i3c_hci *hci)
hci->io_data = rings;
rings->total = nr_rings;
+ regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total);
+ rhs_reg_write(CONTROL, regval);
+
for (i = 0; i < rings->total; i++) {
u32 offset = rhs_reg_read(RHn_OFFSET(i));
@@ -325,11 +328,10 @@ static int hci_dma_init(struct i3c_hci *hci)
rh_reg_write(INTR_SIGNAL_ENABLE, regval);
ring_ready:
- rh_reg_write(RING_CONTROL, RING_CTRL_ENABLE);
+ rh_reg_write(RING_CONTROL, RING_CTRL_ENABLE |
+ RING_CTRL_RUN_STOP);
}
- regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total);
- rhs_reg_write(CONTROL, regval);
return 0;
err_out:
@@ -345,6 +347,8 @@ static void hci_dma_unmap_xfer(struct i3c_hci *hci,
for (i = 0; i < n; i++) {
xfer = xfer_list + i;
+ if (!xfer->data)
+ continue;
dma_unmap_single(&hci->master.dev,
xfer->data_dma, xfer->data_len,
xfer->rnw ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
@@ -450,10 +454,9 @@ static bool hci_dma_dequeue_xfer(struct i3c_hci *hci,
/*
* We're deep in it if ever this condition is ever met.
* Hardware might still be writing to memory, etc.
- * Better suspend the world than risking silent corruption.
*/
dev_crit(&hci->master.dev, "unable to abort the ring\n");
- BUG();
+ WARN_ON(1);
}
for (i = 0; i < n; i++) {
@@ -756,9 +759,11 @@ static bool hci_dma_irq_handler(struct i3c_hci *hci, unsigned int mask)
if (status & INTR_RING_OP)
complete(&rh->op_done);
- if (status & INTR_TRANSFER_ABORT)
+ if (status & INTR_TRANSFER_ABORT) {
dev_notice_ratelimited(&hci->master.dev,
"ring %d: Transfer Aborted\n", i);
+ mipi_i3c_hci_resume(hci);
+ }
if (status & INTR_WARN_INS_STOP_MODE)
dev_warn_ratelimited(&hci->master.dev,
"ring %d: Inserted Stop on Mode Change\n", i);
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index c395e52294..cf703c00f6 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -144,7 +144,7 @@ struct svc_i3c_xfer {
int ret;
unsigned int type;
unsigned int ncmds;
- struct svc_i3c_cmd cmds[];
+ struct svc_i3c_cmd cmds[] __counted_by(ncmds);
};
struct svc_i3c_regs_save {
@@ -787,7 +787,7 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
u8 data[6];
/*
- * We only care about the 48-bit provisional ID yet to
+ * We only care about the 48-bit provisioned ID yet to
* be sure a device does not nack an address twice.
* Otherwise, we would just need to flush the RX FIFO.
*/
@@ -1703,7 +1703,7 @@ static const struct dev_pm_ops svc_i3c_pm_ops = {
};
static const struct of_device_id svc_i3c_master_of_match_tbl[] = {
- { .compatible = "silvaco,i3c-master" },
+ { .compatible = "silvaco,i3c-master-v1"},
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, svc_i3c_master_of_match_tbl);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 23:10:31 +0000