diff options
author | Jochen Friedrich <jochen@scram.de> | 2011-08-18 20:50:31 (GMT) |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-10-17 08:12:42 (GMT) |
commit | de0bc0d1b008d1240c03a0bac4f5534f995ab802 (patch) | |
tree | 3f3b230d3ff6d3d1f27ceb5525867228668f44c2 /drivers/pcmcia/sa1100_simpad.c | |
parent | f24dec9fdafadca53bf9db460da2cbbbfccdb584 (diff) | |
download | linux-fsl-qoriq-de0bc0d1b008d1240c03a0bac4f5534f995ab802.tar.xz |
ARM: 7024/1: simpad: Cleanup CS3 accessors.
- prepend CS3 accessors by simpad_ to indicate they
are specific to simpad devices.
- use spinlock to protect shadow register.
- implement 8 read-only pins.
- use readl/writel macros so barriers are used where
necessary.
- register CS3 as GPIO controller with 24 pins
(16 output only and 8 input only).
- fix PCMCIA driver to access the read-only pins
rather than the shadow register for status bits.
Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/pcmcia/sa1100_simpad.c')
-rw-r--r-- | drivers/pcmcia/sa1100_simpad.c | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/drivers/pcmcia/sa1100_simpad.c b/drivers/pcmcia/sa1100_simpad.c index c998f7a..0fac965 100644 --- a/drivers/pcmcia/sa1100_simpad.c +++ b/drivers/pcmcia/sa1100_simpad.c @@ -15,10 +15,6 @@ #include <mach/simpad.h> #include "sa1100_generic.h" -extern long get_cs3_shadow(void); -extern void set_cs3_bit(int value); -extern void clear_cs3_bit(int value); - static struct pcmcia_irqs irqs[] = { { 1, IRQ_GPIO_CF_CD, "CF_CD" }, }; @@ -26,7 +22,7 @@ static struct pcmcia_irqs irqs[] = { static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { - clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); skt->socket.pci_irq = IRQ_GPIO_CF_IRQ; @@ -38,8 +34,8 @@ static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); /* Disable CF bus: */ - //set_cs3_bit(PCMCIA_BUFF_DIS); - clear_cs3_bit(PCMCIA_RESET); + /*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/ + simpad_clear_cs3_bit(PCMCIA_RESET); } static void @@ -47,15 +43,16 @@ simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned long levels = GPLR; - long cs3reg = get_cs3_shadow(); + long cs3reg = simpad_get_cs3_ro(); state->detect=((levels & GPIO_CF_CD)==0)?1:0; state->ready=(levels & GPIO_CF_IRQ)?1:0; - state->bvd1=1; /* Not available on Simpad. */ - state->bvd2=1; /* Not available on Simpad. */ + state->bvd1 = 1; /* Might be cs3reg & PCMCIA_BVD1 */ + state->bvd2 = 1; /* Might be cs3reg & PCMCIA_BVD2 */ state->wrprot=0; /* Not available on Simpad. */ - - if((cs3reg & 0x0c) == 0x0c) { + + if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) == + (PCMCIA_VS1|PCMCIA_VS2)) { state->vs_3v=0; state->vs_Xv=0; } else { @@ -75,23 +72,23 @@ simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, /* Murphy: see table of MIC2562a-1 */ switch (state->Vcc) { case 0: - clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); break; case 33: - clear_cs3_bit(VCC_3V_EN|EN1); - set_cs3_bit(VCC_5V_EN|EN0); + simpad_clear_cs3_bit(VCC_3V_EN|EN1); + simpad_set_cs3_bit(VCC_5V_EN|EN0); break; case 50: - clear_cs3_bit(VCC_5V_EN|EN1); - set_cs3_bit(VCC_3V_EN|EN0); + simpad_clear_cs3_bit(VCC_5V_EN|EN1); + simpad_set_cs3_bit(VCC_3V_EN|EN0); break; default: printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__, state->Vcc); - clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); local_irq_restore(flags); return -1; } @@ -110,7 +107,7 @@ static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt) static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); - set_cs3_bit(PCMCIA_RESET); + simpad_set_cs3_bit(PCMCIA_RESET); } static struct pcmcia_low_level simpad_pcmcia_ops = { |