Fw: [PATCH][RFC] PCMCIA support for 8xx using platform devices

Fw: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Vitaly Bordug]

This utilizes PCMCIA on mpc885ads and mpc866ads from arch/powerpc. In the new approach,
direct IMMR accesses from within drivers/ were totally eliminated, that requires hardware_enable, hardware_disable, voltage_set board-specific functions to be moved over to BSP code section 
(arch/powerpc/platforms/8xx in 885 case). There is just no way to have both arch/ppc and arch/powerpc approaches to work simultaneously because of that.

It implies a bit of work to move other target's bits over to BSP region, but no ifdef hell worths it,
in addition to the fact of being moved/merged to arch/powerpc, the code would spot this problem 
anyway.

Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
---
This is FW of original message sent to linux-pcmcia@lists.infradead.org to attach wider audience.
Original maillist kept in loop to prevent misunderstanding...

 arch/powerpc/boot/dts/mpc885ads.dts          |   12 +
 arch/powerpc/platforms/8xx/mpc885ads.h       |    5 
 arch/powerpc/platforms/8xx/mpc885ads_setup.c |   63 +++++
 arch/powerpc/sysdev/fsl_soc.c                |   58 ++++
 drivers/pcmcia/Kconfig                       |    1 
 drivers/pcmcia/m8xx_pcmcia.c                 |  342 ++++++++++++--------------
 include/linux/fs_pcmcia_pd.h                 |   27 ++
 7 files changed, 318 insertions(+), 190 deletions(-)

diff --git a/arch/powerpc/boot/dts/mpc885ads.dts b/arch/powerpc/boot/dts/mpc885ads.dts
index 90e047a..330ac91 100644
--- a/arch/powerpc/boot/dts/mpc885ads.dts
+++ b/arch/powerpc/boot/dts/mpc885ads.dts
@@ -112,6 +112,18 @@
 			compatible = "CPM";
 		};
 
+               pcmcia@0080 {
+                       linux,phandle = <0080>;
+                       #interrupt-cells = <1>;
+                       #size-cells = <2>;
+                       compatible = "8xx";
+                       device_type = "pcmcia";
+                       reg = <80 80>;
+                       clock-frequency = <2faf080>;
+                       interrupt-parent = <ff000000>;
+                       interrupts = <d 1>;
+		};
+
 		cpm@ff000000 {
 			linux,phandle = <ff000000>;
 			#address-cells = <1>;
diff --git a/arch/powerpc/platforms/8xx/mpc885ads.h b/arch/powerpc/platforms/8xx/mpc885ads.h
index 7c31aec..4439346 100644
--- a/arch/powerpc/platforms/8xx/mpc885ads.h
+++ b/arch/powerpc/platforms/8xx/mpc885ads.h
@@ -91,5 +91,10 @@ #define PC_ENET_RENA	((ushort)0x0800)
 #define SICR_ENET_MASK	((uint)0x00ff0000)
 #define SICR_ENET_CLKRT	((uint)0x002c0000)
 
+/* Some internal interrupt registers use an 8-bit mask for the interrupt
+ * level instead of a number.
+ */
+#define mk_int_int_mask(IL) (1 << (7 - (IL/2)))
+
 #endif /* __ASM_MPC885ADS_H__ */
 #endif /* __KERNEL__ */
diff --git a/arch/powerpc/platforms/8xx/mpc885ads_setup.c b/arch/powerpc/platforms/8xx/mpc885ads_setup.c
index 394f983..1ba423f 100644
--- a/arch/powerpc/platforms/8xx/mpc885ads_setup.c
+++ b/arch/powerpc/platforms/8xx/mpc885ads_setup.c
@@ -22,6 +22,7 @@ #include <linux/root_dev.h>
 
 #include <linux/fs_enet_pd.h>
 #include <linux/fs_uart_pd.h>
+#include <linux/fs_pcmcia_pd.h>
 #include <linux/mii.h>
 
 #include <asm/delay.h>
@@ -375,6 +376,68 @@ static void init_i2c_ioports()
         setbits16(&cp->cp_pbodr, 0x0030);
 }
 
+void pcmcia_hw_setup(int slot, int enable)
+{
+	unsigned *bcsr_io;
+
+	bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
+	if (enable)
+	clrbits32(bcsr_io, BCSR1_PCCEN);
+	else
+		setbits32(bcsr_io, BCSR1_PCCEN);
+
+	iounmap(bcsr_io);
+}
+
+int pcmcia_set_voltage(int slot, int vcc, int vpp)
+{
+        u32 reg = 0;
+        unsigned *bcsr_io;
+
+        bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
+
+        switch(vcc) {
+                case 0:
+                        break;
+                case 33:
+                        reg |= BCSR1_PCCVCC0;
+                        break;
+                case 50:
+                        reg |= BCSR1_PCCVCC1;
+                        break;
+                default:
+                        return 1;
+        }
+
+        switch(vpp) {
+                case 0:
+                        break;
+                case 33:
+                case 50:
+                        if(vcc == vpp)
+                                reg |= BCSR1_PCCVPP1;
+                        else
+                                return 1;
+                        break;
+                case 120:
+                        if ((vcc == 33) || (vcc == 50))
+                                reg |= BCSR1_PCCVPP0;
+                        else
+                                return 1;
+                default:
+                        return 1;
+        }
+
+        /* first, turn off all power */
+        clrbits32(bcsr_io, 0x00610000);
+
+        /* enable new powersettings */
+        setbits32(bcsr_io, reg);
+
+        iounmap(bcsr_io);
+        return 0;
+}
+
 int platform_device_skip(char *model, int id)
 {
 #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 355c05d..753118d 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -26,6 +26,7 @@ #include <linux/phy.h>
 #include <linux/fsl_devices.h>
 #include <linux/fs_enet_pd.h>
 #include <linux/fs_uart_pd.h>
+#include <linux/fs_pcmcia_pd.h>
 
 #include <asm/system.h>
 #include <asm/atomic.h>
@@ -862,6 +863,8 @@ #ifdef CONFIG_8xx
 
 extern void init_scc_ioports(struct fs_platform_info*);
 extern int platform_device_skip(char *model, int id);
+extern void pcmcia_hw_setup(int slot, int enable);
+extern int pcmcia_set_voltage(int slot, int vcc, int vpp);
 
 static int __init fs_enet_mdio_of_init(void)
 {
@@ -1267,5 +1270,60 @@ err:
 
 arch_initcall(fsl_i2c_cpm_of_init);
 
+static const char *pcmcia_regs = "regs";
+static const char *pcmcia_irq = "interrupt";
+
+static int __init fsl_pcmcia_of_init(void)
+{
+	struct device_node *np;
+	unsigned int i;
+	struct platform_device *pcmcia_dev;
+	int ret;
+
+	for (np = NULL, i = 0;
+	     (np = of_find_compatible_node(np, "pcmcia", "8xx")) != NULL;
+	     i++) {
+		struct resource r[2];
+		struct fs_pcmcia_platform_data pcmcia_data;
+
+		memset(&r, 0, sizeof(r));
+		memset(&pcmcia_data, 0, sizeof(pcmcia_data));
+
+		ret = of_address_to_resource(np, 0, &r[0]);
+		if (ret)
+			goto err;
+		r[0].name = pcmcia_regs;
+
+		r[1].start = r[1].end = irq_of_parse_and_map(np, 0);
+		r[1].flags = IORESOURCE_IRQ;
+		r[1].name = pcmcia_irq;
+
+		pcmcia_data.hwirq = irq_map[r[1].start].hwirq;
+		pcmcia_data.hw_setup = pcmcia_hw_setup;
+		pcmcia_data.voltage_set = pcmcia_set_voltage;
+		pcmcia_data.bus_freq = ppc_proc_freq;
+
+		pcmcia_dev = platform_device_register_simple("m8xx-pcmcia", i, &r[0], 2);
+		if (IS_ERR(pcmcia_dev)) {
+			ret = PTR_ERR(pcmcia_dev);
+			goto err;
+		}
+		ret =
+		    platform_device_add_data(pcmcia_dev, &pcmcia_data,
+					     sizeof(struct
+						    fs_pcmcia_platform_data));
+		if (ret)
+			goto unreg;
+	}
+
+	return 0;
+
+unreg:
+	platform_device_unregister(pcmcia_dev);
+err:
+	return ret;
+}
+
+arch_initcall(fsl_pcmcia_of_init);
 
 #endif /* CONFIG_8xx */
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig
index 35f8864..c3fd55d 100644
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -183,6 +183,7 @@ config PCMCIA_M8XX
         tristate "MPC8xx PCMCIA support"
         depends on PCMCIA && PPC && 8xx 
         select PCCARD_IODYN
+	select PCCARD_NONSTATIC
         help
         Say Y here to include support for PowerPC 8xx series PCMCIA
         controller.
diff --git a/drivers/pcmcia/m8xx_pcmcia.c b/drivers/pcmcia/m8xx_pcmcia.c
index 9721ed7..ddac883 100644
--- a/drivers/pcmcia/m8xx_pcmcia.c
+++ b/drivers/pcmcia/m8xx_pcmcia.c
@@ -40,10 +40,6 @@ #include <linux/types.h>
 #include <linux/fcntl.h>
 #include <linux/string.h>
 
-#include <asm/io.h>
-#include <asm/bitops.h>
-#include <asm/system.h>
-
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
@@ -52,10 +48,16 @@ #include <linux/ioport.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
+#include <linux/fs_pcmcia_pd.h>
 
+#include <asm/io.h>
+#include <asm/bitops.h>
+#include <asm/system.h>
+#include <asm/time.h>
 #include <asm/mpc8xx.h>
 #include <asm/8xx_immap.h>
 #include <asm/irq.h>
+#include <asm/fs_pd.h>
 
 #include <pcmcia/version.h>
 #include <pcmcia/cs_types.h>
@@ -146,27 +148,18 @@ #endif
 #define PCMCIA_MEM_WIN_BASE 0xe0000000 /* base address for memory window 0   */
 #define PCMCIA_MEM_WIN_SIZE 0x04000000 /* each memory window is 64 MByte     */
 #define PCMCIA_IO_WIN_BASE  _IO_BASE   /* base address for io window 0       */
-
-#define PCMCIA_SCHLVL PCMCIA_INTERRUPT /* Status Change Interrupt Level      */
-
 /* ------------------------------------------------------------------------- */
 
-/* 2.4.x and newer has this always in HZ */
-#define M8XX_BUSFREQ ((((bd_t *)&(__res))->bi_busfreq))
-
-static int pcmcia_schlvl = PCMCIA_SCHLVL;
+static int pcmcia_schlvl;
 
-static DEFINE_SPINLOCK(events_lock);
+static spinlock_t events_lock = SPIN_LOCK_UNLOCKED;
 
 
 #define PCMCIA_SOCKET_KEY_5V 1
 #define PCMCIA_SOCKET_KEY_LV 2
 
 /* look up table for pgcrx registers */
-static u32 *m8xx_pgcrx[2] = {
-	&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcra,
-	&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pgcrb
-};
+static u32 *m8xx_pgcrx[2];
 
 /*
  * This structure is used to address each window in the PCMCIA controller.
@@ -228,11 +221,16 @@ struct event_table {
 	u32 eventbit;
 };
 
+static const char driver_name[] = "m8xx-pcmcia";
+
 struct socket_info {
 	void	(*handler)(void *info, u32 events);
 	void	*info;
 
 	u32 slot;
+	pcmconf8xx_t *pcmcia;
+	struct platform_device *pdev;
+	struct fs_pcmcia_platform_data *pdata;
 
 	socket_state_t state;
 	struct pccard_mem_map mem_win[PCMCIA_MEM_WIN_NO];
@@ -404,83 +402,15 @@ static void hardware_disable(int slot)
 #endif
 
 /* MPC885ADS Boards */
-
 #if defined(CONFIG_MPC885ADS)
 
 #define PCMCIA_BOARD_MSG "MPC885ADS"
-
-static int voltage_set(int slot, int vcc, int vpp)
-{
-	u32 reg = 0;
-	unsigned *bcsr_io;
-
-	bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
-
-	switch(vcc) {
-		case 0:
-			break;
-		case 33:
-			reg |= BCSR1_PCCVCC0;
-			break;
-		case 50:
-			reg |= BCSR1_PCCVCC1;
-			break;
-		default:
-			goto out_unmap;
-	}
-
-	switch(vpp) {
-		case 0:
-			break;
-		case 33:
-		case 50:
-			if(vcc == vpp)
-				reg |= BCSR1_PCCVPP1;
-			else
-				goto out_unmap;
-			break;
-		case 120:
-			if ((vcc == 33) || (vcc == 50))
-				reg |= BCSR1_PCCVPP0;
-			else
-				goto out_unmap;
-		default:
-			goto out_unmap;
-	}
-
-	/* first, turn off all power */
-	out_be32(bcsr_io, in_be32(bcsr_io) & ~(BCSR1_PCCVCC_MASK | BCSR1_PCCVPP_MASK));
-
-	/* enable new powersettings */
-	out_be32(bcsr_io, in_be32(bcsr_io) | reg);
-
-	iounmap(bcsr_io);
-	return 0;
-
-out_unmap:
-	iounmap(bcsr_io);
-	return 1;
-}
-
 #define socket_get(_slot_) PCMCIA_SOCKET_KEY_5V
 
-static void hardware_enable(int slot)
-{
-	unsigned *bcsr_io;
-
-	bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
-	out_be32(bcsr_io, in_be32(bcsr_io) & ~BCSR1_PCCEN);
-	iounmap(bcsr_io);
-}
-
-static void hardware_disable(int slot)
-{
-	unsigned *bcsr_io;
-
-	bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
-	out_be32(bcsr_io, in_be32(bcsr_io) |  BCSR1_PCCEN);
-	iounmap(bcsr_io);
-}
+/* These functions are defined in the board-specific code */
+#define hardware_enable(_slot_)	pdata->hw_setup(_slot_, 1)
+#define hardware_disable(_slot_) pdata->hw_setup(_slot_, 0)
+#define voltage_set(slot, vcc, vpp)	pdata->voltage_set(slot, vcc, vpp)
 
 #endif
 
@@ -541,6 +471,7 @@ #define hardware_enable(_slot_)  /* No h
 #define hardware_disable(_slot_) /* No hardware to disable */
 
 #endif /* CONFIG_MBX */
+/* Motorola MBX860 */
 
 #if defined(CONFIG_PRxK)
 #include <asm/cpld.h>
@@ -604,63 +535,22 @@ #define hardware_disable(_slot_) /* No h
 
 #endif /* CONFIG_PRxK */
 
-static void m8xx_shutdown(void)
-{
-	u32 m, i;
-	struct pcmcia_win *w;
-
-	for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
-		w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
-
-		out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, M8XX_PCMCIA_MASK(i));
-		out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) & ~M8XX_PCMCIA_MASK(i));
-
-		/* turn off interrupt and disable CxOE */
-		out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
-
-		/* turn off memory windows */
-		for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
-			out_be32(&w->or, 0); /* set to not valid */
-			w++;
-		}
-
-		/* turn off voltage */
-		voltage_set(i, 0, 0);
-
-		/* disable external hardware */
-		hardware_disable(i);
-	}
-
-	free_irq(pcmcia_schlvl, NULL);
-}
-
-static struct device_driver m8xx_driver = {
-        .name = "m8xx-pcmcia",
-        .bus = &platform_bus_type,
-        .suspend = pcmcia_socket_dev_suspend,
-        .resume = pcmcia_socket_dev_resume,
-};
-
-static struct platform_device m8xx_device = {
-        .name = "m8xx-pcmcia",
-        .id = 0,
-};
-
 static u32 pending_events[PCMCIA_SOCKETS_NO];
-static DEFINE_SPINLOCK(pending_event_lock);
+static spinlock_t pending_event_lock = SPIN_LOCK_UNLOCKED;
 
 static irqreturn_t m8xx_interrupt(int irq, void *dev)
 {
 	struct socket_info *s;
 	struct event_table *e;
 	unsigned int i, events, pscr, pipr, per;
+	pcmconf8xx_t	*pcmcia = socket[0].pcmcia;
 
 	dprintk("Interrupt!\n");
 	/* get interrupt sources */
 
-	pscr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr);
-	pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr);
-	per = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per);
+	pscr = in_be32(&pcmcia->pcmc_pscr);
+	pipr = in_be32(&pcmcia->pcmc_pipr);
+	per = in_be32(&pcmcia->pcmc_per);
 
 	for(i = 0; i < PCMCIA_SOCKETS_NO; i++) {
 		s = &socket[i];
@@ -724,7 +614,7 @@ #endif
 			per &= ~M8XX_PCMCIA_RDY_L(0);
 			per &= ~M8XX_PCMCIA_RDY_L(1);
 
-			out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, per);
+			out_be32(&pcmcia->pcmc_per, per);
 
 			if (events)
 				pcmcia_parse_events(&socket[i].socket, events);
@@ -732,7 +622,7 @@ #endif
 	}
 
 	/* clear the interrupt sources */
-	out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, pscr);
+	out_be32(&pcmcia->pcmc_pscr, pscr);
 
 	dprintk("Interrupt done.\n");
 
@@ -753,7 +643,7 @@ static u32 m8xx_get_graycode(u32 size)
 	return k;
 }
 
-static u32 m8xx_get_speed(u32 ns, u32 is_io)
+static u32 m8xx_get_speed(u32 ns, u32 is_io, u32 bus_freq)
 {
 	u32 reg, clocks, psst, psl, psht;
 
@@ -781,7 +671,7 @@ static u32 m8xx_get_speed(u32 ns, u32 is
 
 #define ADJ 180 /* 80 % longer accesstime - to be sure */
 
-	clocks = ((M8XX_BUSFREQ / 1000) * ns) / 1000;
+	clocks = ((bus_freq / 1000) * ns) / 1000;
 	clocks = (clocks * ADJ) / (100*1000);
 	if(clocks >= PCMCIA_BMT_LIMIT) {
 		printk( "Max access time limit reached\n");
@@ -806,8 +696,9 @@ static int m8xx_get_status(struct pcmcia
 	int lsock = container_of(sock, struct socket_info, socket)->slot;
 	struct socket_info *s = &socket[lsock];
 	unsigned int pipr, reg;
+	pcmconf8xx_t *pcmcia = s->pcmcia;
 
-	pipr = in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pipr);
+	pipr = in_be32(&pcmcia->pcmc_pipr);
 
 	*value  = ((pipr & (M8XX_PCMCIA_CD1(lsock)
 			    | M8XX_PCMCIA_CD2(lsock))) == 0) ? SS_DETECT : 0;
@@ -915,9 +806,11 @@ static int m8xx_set_socket(struct pcmcia
 {
 	int lsock = container_of(sock, struct socket_info, socket)->slot;
 	struct socket_info *s = &socket[lsock];
+	struct fs_pcmcia_platform_data *pdata = s->pdata;
 	struct event_table *e;
 	unsigned int reg;
 	unsigned long flags;
+	pcmconf8xx_t *pcmcia = socket[0].pcmcia;
 
 	dprintk( "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
 	      "io_irq %d, csc_mask %#2.2x)\n", lsock, state->flags,
@@ -927,6 +820,7 @@ static int m8xx_set_socket(struct pcmcia
 	if(voltage_set(lsock, state->Vcc, state->Vpp))
 		return -EINVAL;
 
+
 	/* Take care of reset... */
 	if(state->flags & SS_RESET)
 		out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) |  M8XX_PGCRX_CXRESET); /* active high */
@@ -982,7 +876,8 @@ static int m8xx_set_socket(struct pcmcia
 		 * If io_irq is non-zero we should enable irq.
 		 */
 		if(state->io_irq) {
-			out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | mk_int_int_mask(state->io_irq) << 24);
+			int hwirq = s->pdata->hwirq;
+			out_be32(M8XX_PGCRX(lsock), in_be32(M8XX_PGCRX(lsock)) | mk_int_int_mask(hwirq) << 24);
 			/*
 			 * Strange thing here:
 			 * The manual does not tell us which interrupt
@@ -1027,7 +922,7 @@ static int m8xx_set_socket(struct pcmcia
 	 * Writing ones will clear the bits.
 	 */
 
-	out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr, reg);
+	out_be32(&pcmcia->pcmc_pscr, reg);
 
 	/*
 	 * Write the mask.
@@ -1036,15 +931,8 @@ static int m8xx_set_socket(struct pcmcia
 	 * Ones will enable the interrupt.
 	 */
 
-	/*
-	  reg |= ((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per
-	  & M8XX_PCMCIA_MASK(lsock);
-	*/
-
-	reg |= in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) &
-		(M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
-
-	out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per, reg);
+	reg |= in_be32(&pcmcia->pcmc_per) & (M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
+	out_be32(&pcmcia->pcmc_per, reg);
 
 	spin_unlock_irqrestore(&events_lock, flags);
 
@@ -1062,6 +950,8 @@ static int m8xx_set_io_map(struct pcmcia
 	struct socket_info *s = &socket[lsock];
 	struct pcmcia_win *w;
 	unsigned int reg, winnr;
+	pcmconf8xx_t *pcmcia = s->pcmcia;
+
 
 #define M8XX_SIZE (io->stop - io->start + 1)
 #define M8XX_BASE (PCMCIA_IO_WIN_BASE + io->start)
@@ -1086,7 +976,7 @@ #define M8XX_BASE (PCMCIA_IO_WIN_BASE + 
 
 		/* setup registers */
 
-		w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
+		w = (void *) &pcmcia->pcmc_pbr0;
 		w += winnr;
 
 		out_be32(&w->or, 0); /* turn off window first */
@@ -1095,12 +985,13 @@ #define M8XX_BASE (PCMCIA_IO_WIN_BASE + 
 		reg <<= 27;
   		reg |= M8XX_PCMCIA_POR_IO |(lsock << 2);
 
-		reg |= m8xx_get_speed(io->speed, 1);
+		reg |= m8xx_get_speed(io->speed, 1, s->pdata->bus_freq);
 
 		if(io->flags & MAP_WRPROT)
 			reg |= M8XX_PCMCIA_POR_WRPROT;
 
-		if(io->flags & (MAP_16BIT | MAP_AUTOSZ))
+		/*if(io->flags & (MAP_16BIT | MAP_AUTOSZ))*/
+		if(io->flags & MAP_16BIT)
 			reg |= M8XX_PCMCIA_POR_16BIT;
 
 		if(io->flags & MAP_ACTIVE)
@@ -1117,7 +1008,7 @@ #define M8XX_BASE (PCMCIA_IO_WIN_BASE + 
 
 		/* setup registers */
 
-		w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
+		w = (void *) &pcmcia->pcmc_pbr0;
 		w += winnr;
 
 		out_be32(&w->or, 0); /* turn off window */
@@ -1144,6 +1035,7 @@ static int m8xx_set_mem_map(struct pcmci
 	struct pcmcia_win *w;
 	struct pccard_mem_map *old;
 	unsigned int reg, winnr;
+	pcmconf8xx_t *pcmcia = s->pcmcia;
 
 	dprintk( "SetMemMap(%d, %d, %#2.2x, %d ns, "
 	      "%#5.5lx, %#5.5x)\n", lsock, mem->map, mem->flags,
@@ -1166,12 +1058,12 @@ static int m8xx_set_mem_map(struct pcmci
 
 	/* Setup the window in the pcmcia controller */
 
-	w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
+	w = (void *) &pcmcia->pcmc_pbr0;
 	w += winnr;
 
 	reg |= lsock << 2;
 
-	reg |= m8xx_get_speed(mem->speed, 0);
+	reg |= m8xx_get_speed(mem->speed, 0, s->pdata->bus_freq);
 
 	if(mem->flags & MAP_ATTRIB)
 		reg |=  M8XX_PCMCIA_POR_ATTRMEM;
@@ -1236,57 +1128,69 @@ static int m8xx_sock_init(struct pcmcia_
 
 }
 
-static int m8xx_suspend(struct pcmcia_socket *sock)
+static int m8xx_sock_suspend(struct pcmcia_socket *sock)
 {
 	return m8xx_set_socket(sock, &dead_socket);
 }
 
 static struct pccard_operations m8xx_services = {
 	.init	= m8xx_sock_init,
-	.suspend = m8xx_suspend,
+	.suspend = m8xx_sock_suspend,
 	.get_status = m8xx_get_status,
 	.set_socket = m8xx_set_socket,
 	.set_io_map = m8xx_set_io_map,
 	.set_mem_map = m8xx_set_mem_map,
 };
 
-static int __init m8xx_init(void)
+static int __init m8xx_probe(struct platform_device *pdev)
 {
 	struct pcmcia_win *w;
-	unsigned int i,m;
+	unsigned int i, m, hwirq;
+	pcmconf8xx_t *pcmcia;
+	int status;
+	struct resource *r;
+	struct fs_pcmcia_platform_data *pdata = pdev->dev.platform_data;
 
 	pcmcia_info("%s\n", version);
 
-	if (driver_register(&m8xx_driver))
-		return -1;
+	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
+
+	pcmcia = ioremap(r->start, r->end - r->start + 1);
+	if(pcmcia == NULL)
+		return -EINVAL;
+
+	pcmcia_schlvl = platform_get_irq_byname(pdev,"interrupt");
+	if (pcmcia_schlvl < 0)
+		return -EINVAL;
+	hwirq = pdata->hwirq;
+
+	m8xx_pgcrx[0] = &pcmcia->pcmc_pgcra;
+	m8xx_pgcrx[1] = &pcmcia->pcmc_pgcrb;
+
 
 	pcmcia_info(PCMCIA_BOARD_MSG " using " PCMCIA_SLOT_MSG
-		    " with IRQ %u.\n", pcmcia_schlvl);
+		    " with IRQ %u  (%d). \n", pcmcia_schlvl, hwirq);
 
 	/* Configure Status change interrupt */
 
-	if(request_irq(pcmcia_schlvl, m8xx_interrupt, 0,
-			  "m8xx_pcmcia", NULL)) {
+	if(request_irq(pcmcia_schlvl, m8xx_interrupt, IRQF_SHARED,
+			  driver_name, socket)) {
 		pcmcia_error("Cannot allocate IRQ %u for SCHLVL!\n",
 			     pcmcia_schlvl);
 		return -1;
 	}
 
-	w = (void *) &((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pbr0;
-
-	out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_pscr,
-		M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1));
+	w = (void *) &pcmcia->pcmc_pbr0;
 
-	out_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per,
-		in_be32(&((immap_t *)IMAP_ADDR)->im_pcmcia.pcmc_per) &
-		~(M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1)));
+	out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(0)| M8XX_PCMCIA_MASK(1));
+	clrbits32(&pcmcia->pcmc_per, M8XX_PCMCIA_MASK(0) | M8XX_PCMCIA_MASK(1));
 
-/* connect interrupt and disable CxOE */
+	/* connect interrupt and disable CxOE */
 
-	out_be32(M8XX_PGCRX(0), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16));
-	out_be32(M8XX_PGCRX(1), M8XX_PGCRX_CXOE | (mk_int_int_mask(pcmcia_schlvl) << 16));
+	out_be32(M8XX_PGCRX(0), M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
+	out_be32(M8XX_PGCRX(1), M8XX_PGCRX_CXOE | (mk_int_int_mask(hwirq) << 16));
 
-/* intialize the fixed memory windows */
+	/* intialize the fixed memory windows */
 
 	for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
 		for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
@@ -1300,16 +1204,14 @@ static int __init m8xx_init(void)
 		}
 	}
 
-/* turn off voltage */
+	/* turn off voltage */
 	voltage_set(0, 0, 0);
 	voltage_set(1, 0, 0);
 
-/* Enable external hardware */
+	/* Enable external hardware */
 	hardware_enable(0);
 	hardware_enable(1);
 
-	platform_device_register(&m8xx_device);
-
 	for (i = 0 ; i < PCMCIA_SOCKETS_NO; i++) {
 		socket[i].slot = i;
 		socket[i].socket.owner = THIS_MODULE;
@@ -1317,30 +1219,90 @@ static int __init m8xx_init(void)
 		socket[i].socket.irq_mask = 0x000;
 		socket[i].socket.map_size = 0x1000;
 		socket[i].socket.io_offset = 0;
-		socket[i].socket.pci_irq = i  ? 7 : 9;
+		socket[i].socket.pci_irq = pcmcia_schlvl;
 		socket[i].socket.ops = &m8xx_services;
-		socket[i].socket.resource_ops = &pccard_iodyn_ops;
+		socket[i].socket.resource_ops = &pccard_nonstatic_ops;
 		socket[i].socket.cb_dev = NULL;
-		socket[i].socket.dev.parent = &m8xx_device.dev;
+		socket[i].socket.dev.parent = &pdev->dev;
+		socket[i].pcmcia = pcmcia;
+		socket[i].pdata = pdata;
 	}
 
-	for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
-		pcmcia_register_socket(&socket[i].socket);
+	for (i = 0; i < PCMCIA_SOCKETS_NO; i++) {
+		status = pcmcia_register_socket(&socket[i].socket);
+		if (status < 0)
+			pcmcia_error("Socket register failed\n");
+	}
 
 	return 0;
 }
 
-static void __exit m8xx_exit(void)
+static int __exit m8xx_shutdown(struct platform_device *pdev)
 {
-	int i;
+	u32 m, i;
+	struct pcmcia_win *w;
+	pcmconf8xx_t *pcmcia = socket[0].pcmcia;
+	struct fs_pcmcia_platform_data *pdata = socket[0].pdata;
+
+	for(i = 0; i < PCMCIA_SOCKETS_NO; i++){
+		w = (void *) &pcmcia->pcmc_pbr0;
+
+		out_be32(&pcmcia->pcmc_pscr, M8XX_PCMCIA_MASK(i));
+		out_be32(&pcmcia->pcmc_per, in_be32(&pcmcia->pcmc_per) & ~M8XX_PCMCIA_MASK(i));
+
+		/* turn off interrupt and disable CxOE */
+		out_be32(M8XX_PGCRX(i), M8XX_PGCRX_CXOE);
 
+		/* turn off memory windows */
+		for(m = 0; m < PCMCIA_MEM_WIN_NO; m++) {
+			out_be32(&w->or, 0); /* set to not valid */
+			w++;
+		}
+
+		/* turn off voltage */
+		voltage_set(i, 0, 0);
+
+		/* disable external hardware */
+		hardware_disable(i);
+	}
 	for (i = 0; i < PCMCIA_SOCKETS_NO; i++)
 		pcmcia_unregister_socket(&socket[i].socket);
 
-	m8xx_shutdown();
+	free_irq(pcmcia_schlvl, NULL);
+
+	return 0;
+}
+
+static int m8xx_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        return pcmcia_socket_dev_suspend(&pdev->dev, state);
+}
+
+static int m8xx_resume(struct platform_device *pdev)
+{
+        return pcmcia_socket_dev_resume(&pdev->dev);
+}
 
-	platform_device_unregister(&m8xx_device);
-	driver_unregister(&m8xx_driver);
+static struct platform_driver m8xx_driver = {
+	.driver = {
+		.name		= (char *) driver_name,
+		.owner		= THIS_MODULE,
+	},
+	.probe		= m8xx_probe,
+	.remove		= __exit_p(m8xx_shutdown),
+	.suspend	= m8xx_suspend,
+	.resume		= m8xx_resume,
+};
+
+
+static int __init m8xx_init(void)
+{
+	return platform_driver_register(&m8xx_driver);
+}
+
+static void __exit m8xx_exit(void)
+{
+	platform_driver_unregister(&m8xx_driver);
 }
 
 module_init(m8xx_init);
diff --git a/include/linux/fs_pcmcia_pd.h b/include/linux/fs_pcmcia_pd.h
new file mode 100644
index 0000000..2769a11
--- /dev/null
+++ b/include/linux/fs_pcmcia_pd.h
@@ -0,0 +1,27 @@
+/*
+ * Platform information definitions for the CPM Uart driver.
+ *
+ * 2007 (c) MontaVista Software, Inc.
+ * Yuri Shpilevsky <yshpilevsky@ru.mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#ifndef FS_PCMCIA_PD_H
+#define FS_PCMCIA_PD_H
+
+#include <linux/version.h>
+#include <asm/types.h>
+
+struct fs_pcmcia_platform_data {
+	void(*hw_setup)(int slot, int enable);
+	int(*voltage_set)(int slot, int vcc, int vpp);
+
+	/* device specific information */
+	int hwirq;
+	u32 bus_freq;
+};
+
+#endif


-- 
Sincerely, 
Vitaly


-- 
Sincerely, 
Vitaly

_______________________________________________
Linux PCMCIA reimplementation list
http://lists.infradead.org/mailman/listinfo/linux-pcmcia


-- 
Sincerely, Vitaly

Re: Fw: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Arnd Bergmann]

On Sunday 22 April 2007, Vitaly Bordug wrote:
> This utilizes PCMCIA on mpc885ads and mpc866ads from arch/powerpc. In the
> new approach, direct IMMR accesses from within drivers/ were totally
> eliminated, that requires hardware_enable, hardware_disable, voltage_set
> board-specific functions to be moved over to BSP code section   
> (arch/powerpc/platforms/8xx in 885 case). There is just no way to have
> both arch/ppc and arch/powerpc approaches to work simultaneously because
> of that.  

Maybe I'm missing a key issue here, but what's the point of adding
more platform_devices for stuff that is already in the device tree?
Shouldn't this be made an of_platform_driver instead so you can
use the existing of_device directly?

	Arnd <><

Re: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Vitaly Bordug]

On Sun, 22 Apr 2007 23:49:41 +0200
Arnd Bergmann wrote:

> On Sunday 22 April 2007, Vitaly Bordug wrote:
> > This utilizes PCMCIA on mpc885ads and mpc866ads from arch/powerpc.
> > In the new approach, direct IMMR accesses from within drivers/ were
> > totally eliminated, that requires hardware_enable,
> > hardware_disable, voltage_set board-specific functions to be moved
> > over to BSP code section (arch/powerpc/platforms/8xx in 885 case).
> > There is just no way to have both arch/ppc and arch/powerpc
> > approaches to work simultaneously because of that.  
> 
> Maybe I'm missing a key issue here, but what's the point of adding
> more platform_devices for stuff that is already in the device tree?
> Shouldn't this be made an of_platform_driver instead so you can
> use the existing of_device directly?
> 
Was thinking of it but platform_device is better for migration purposes. Hence,
assuming somebody would want to have pcmcia working not bothering to add whole arch/powerpc support,
it can be accomplished quickly. OTOH, further change from pd to of_device is not hard as well. So far, most ppc stuff (if not all) still existing both in ppc/ and powerpc/ paths, and to keep consistency platform_devices are used here and there. So, with pd approach arch/ppc/ boards are encouraged to get source device/driver bus ready, hereby simplifying transition to of_device later.

With current bootwrapper activities it may happen sooner, but there are many places in kernel nobody want to move for almost zero value..



-- 
Sincerely, Vitaly

Re: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Christoph Hellwig]

On Mon, Apr 23, 2007 at 10:14:27AM +0400, Vitaly Bordug wrote:
> On Sun, 22 Apr 2007 23:49:41 +0200
> Arnd Bergmann wrote:
> 
> > On Sunday 22 April 2007, Vitaly Bordug wrote:
> > > This utilizes PCMCIA on mpc885ads and mpc866ads from arch/powerpc.
> > > In the new approach, direct IMMR accesses from within drivers/ were
> > > totally eliminated, that requires hardware_enable,
> > > hardware_disable, voltage_set board-specific functions to be moved
> > > over to BSP code section (arch/powerpc/platforms/8xx in 885 case).
> > > There is just no way to have both arch/ppc and arch/powerpc
> > > approaches to work simultaneously because of that.  
> > 
> > Maybe I'm missing a key issue here, but what's the point of adding
> > more platform_devices for stuff that is already in the device tree?
> > Shouldn't this be made an of_platform_driver instead so you can
> > use the existing of_device directly?
> > 
> Was thinking of it but platform_device is better for migration purposes. Hence,
> assuming somebody would want to have pcmcia working not bothering to add whole arch/powerpc support,
> it can be accomplished quickly.

That's a horrible argument.  Please do it properly, and let arch/ppc die
as it should.  We shouldn't be adding anything to it anymore anyway.

Re: Fw: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Scott Wood]

On Sun, Apr 22, 2007 at 11:26:58PM +0400, Vitaly Bordug wrote:
> diff --git a/arch/powerpc/boot/dts/mpc885ads.dts b/arch/powerpc/boot/dts/mpc885ads.dts
> index 90e047a..330ac91 100644
> --- a/arch/powerpc/boot/dts/mpc885ads.dts
> +++ b/arch/powerpc/boot/dts/mpc885ads.dts
> @@ -112,6 +112,18 @@
>  			compatible = "CPM";
>  		};
>  
> +               pcmcia@0080 {
> +                       linux,phandle = <0080>;
> +                       #interrupt-cells = <1>;
> +                       #size-cells = <2>;
> +                       compatible = "8xx";
> +                       device_type = "pcmcia";
> +                       reg = <80 80>;
> +                       clock-frequency = <2faf080>;
> +                       interrupt-parent = <ff000000>;
> +                       interrupts = <d 1>;
> +		};
> +

DTC supports labels now; we should be using those instead of hardcoded
phandles.  Also, please indent by tabs.

-Scott

Re: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Vitaly Bordug]

On Mon, 23 Apr 2007 08:59:57 +0100
Christoph Hellwig wrote:

> On Mon, Apr 23, 2007 at 10:14:27AM +0400, Vitaly Bordug wrote:
> > On Sun, 22 Apr 2007 23:49:41 +0200
> > Arnd Bergmann wrote:
> > 
> > > On Sunday 22 April 2007, Vitaly Bordug wrote:
> > > > This utilizes PCMCIA on mpc885ads and mpc866ads from
> > > > arch/powerpc. In the new approach, direct IMMR accesses from
> > > > within drivers/ were totally eliminated, that requires
> > > > hardware_enable, hardware_disable, voltage_set board-specific
> > > > functions to be moved over to BSP code section
> > > > (arch/powerpc/platforms/8xx in 885 case). There is just no way
> > > > to have both arch/ppc and arch/powerpc approaches to work
> > > > simultaneously because of that.  
> > > 
> > > Maybe I'm missing a key issue here, but what's the point of adding
> > > more platform_devices for stuff that is already in the device
> > > tree? Shouldn't this be made an of_platform_driver instead so you
> > > can use the existing of_device directly?
> > > 
> > Was thinking of it but platform_device is better for migration
> > purposes. Hence, assuming somebody would want to have pcmcia
> > working not bothering to add whole arch/powerpc support, it can be
> > accomplished quickly.
> 
> That's a horrible argument.  Please do it properly, and let arch/ppc
> die as it should.  We shouldn't be adding anything to it anymore
> anyway.
> 
I understand your point, but we shouldn't trash existing bits either. Things are a bit different with embedded
stuff, and especially in case of 8xx, there are targets without OF-powered uboot. Bootwrapper thing might be helpful in resolving it, but not a holy tablet after all.

The main point is: current 8xx pcmcia code is a holy mess of ifdefs, direct immr accesses (assuming it is io_block_mapped 1:1) etc. And limiting pcmcia to 885ads only (the only 8xx that supports OF so far) is not good.
We have to admit, that many 8xx boards will remain in ppc/ for a while, and instead of just dropping BSP bits
I'm going to let them be refactored via pdevs (with announcement in feature removal reference) as it would take couple of hrs only. If nobody will care, then the whole 8xx pcmcia driver will be cleaned up and switched 
to of_device.

Does that make sense?

-- 
Sincerely, Vitaly

Re: [PATCH][RFC] PCMCIA support for 8xx using platform devices

[Segher Boessenkool]

>> That's a horrible argument.  Please do it properly, and let arch/ppc
>> die as it should.  We shouldn't be adding anything to it anymore
>> anyway.
>>
> I understand your point, but we shouldn't trash existing bits either.

Why not?  The things that haven't been ported over yet
obviously are unmaintained.  If we can make the few
remaining board ports in there utterly broken, we
can finally remove arch/ppc/ completely :-)

Since nothing new gets added to arch/ppc/ anymore,
anyone who wants it can get it from an older kernel
tree, no?

[Yes, I'm half joking.  No, not fully.]


Segher