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| author | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 08:24:35 +0200 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 08:24:35 +0200 |
| commit | 60d32970c5a32e8c4f340a9e41993759ad658ef2 (patch) | |
| tree | a7f60c934ae250f0291622cb02540638ef7cbf6d | |
| parent | 3e07ec0eee1662f89e57f84aff625065beb2b209 (diff) | |
| download | linux-3.10-60d32970c5a32e8c4f340a9e41993759ad658ef2.tar.gz linux-3.10-60d32970c5a32e8c4f340a9e41993759ad658ef2.tar.bz2 linux-3.10-60d32970c5a32e8c4f340a9e41993759ad658ef2.zip | |
firewire: add read_csr_reg driver callback
To prepare for the following additions of more OHCI-implemented CSR
registers, replace the get_cycle_time driver callback with a generic
CSR register callback.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
| -rw-r--r-- | drivers/firewire/core-cdev.c | 2 | ||||
| -rw-r--r-- | drivers/firewire/core-transaction.c | 3 | ||||
| -rw-r--r-- | drivers/firewire/core.h | 2 | ||||
| -rw-r--r-- | drivers/firewire/ohci.c | 19 |
4 files changed, 20 insertions, 6 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 50332b84f49..2e62516a4b1 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1044,7 +1044,7 @@ static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg) local_irq_disable(); - cycle_time = card->driver->get_cycle_time(card); + cycle_time = card->driver->read_csr_reg(card, CSR_CYCLE_TIME); switch (a->clk_id) { case CLOCK_REALTIME: getnstimeofday(&ts); break; diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index 6971400b635..a4d8109edec 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -1025,7 +1025,8 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, case CSR_CYCLE_TIME: if (TCODE_IS_READ_REQUEST(tcode) && length == 4) - *data = cpu_to_be32(card->driver->get_cycle_time(card)); + *data = cpu_to_be32(card->driver-> + read_csr_reg(card, CSR_CYCLE_TIME)); else rcode = RCODE_TYPE_ERROR; break; diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h index 25a72e57a0c..c19e9873e43 100644 --- a/drivers/firewire/core.h +++ b/drivers/firewire/core.h @@ -75,7 +75,7 @@ struct fw_card_driver { int (*enable_phys_dma)(struct fw_card *card, int node_id, int generation); - u32 (*get_cycle_time)(struct fw_card *card); + u32 (*read_csr_reg)(struct fw_card *card, int csr_offset); struct fw_iso_context * (*allocate_iso_context)(struct fw_card *card, diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 65b9bdb8541..a8093a9a3fc 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1939,9 +1939,8 @@ static u32 cycle_timer_ticks(u32 cycle_timer) * error. (A PCI read should take at least 20 ticks of the 24.576 MHz timer to * execute, so we have enough precision to compute the ratio of the differences.) */ -static u32 ohci_get_cycle_time(struct fw_card *card) +static u32 get_cycle_time(struct fw_ohci *ohci) { - struct fw_ohci *ohci = fw_ohci(card); u32 c0, c1, c2; u32 t0, t1, t2; s32 diff01, diff12; @@ -1970,6 +1969,20 @@ static u32 ohci_get_cycle_time(struct fw_card *card) return c2; } +static u32 ohci_read_csr_reg(struct fw_card *card, int csr_offset) +{ + struct fw_ohci *ohci = fw_ohci(card); + + switch (csr_offset) { + case CSR_CYCLE_TIME: + return get_cycle_time(ohci); + + default: + WARN_ON(1); + return 0; + } +} + static void copy_iso_headers(struct iso_context *ctx, void *p) { int i = ctx->header_length; @@ -2407,7 +2420,7 @@ static const struct fw_card_driver ohci_driver = { .send_response = ohci_send_response, .cancel_packet = ohci_cancel_packet, .enable_phys_dma = ohci_enable_phys_dma, - .get_cycle_time = ohci_get_cycle_time, + .read_csr_reg = ohci_read_csr_reg, .allocate_iso_context = ohci_allocate_iso_context, .free_iso_context = ohci_free_iso_context, |