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Diffstat (limited to 'arch/ppc/platforms/mpc8272ads_setup.c')
-rw-r--r--arch/ppc/platforms/mpc8272ads_setup.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/ppc/platforms/mpc8272ads_setup.c b/arch/ppc/platforms/mpc8272ads_setup.c
index bc9b94f77e3..e62b75707f7 100644
--- a/arch/ppc/platforms/mpc8272ads_setup.c
+++ b/arch/ppc/platforms/mpc8272ads_setup.c
@@ -26,11 +26,35 @@
#include <asm/irq.h>
#include <asm/ppc_sys.h>
#include <asm/ppcboot.h>
+#include <linux/fs_uart_pd.h>
#include "pq2ads_pd.h"
static void init_fcc1_ioports(void);
static void init_fcc2_ioports(void);
+static void init_scc1_uart_ioports(void);
+static void init_scc4_uart_ioports(void);
+
+static struct fs_uart_platform_info mpc8272_uart_pdata[] = {
+ [fsid_scc1_uart] = {
+ .init_ioports = init_scc1_uart_ioports,
+ .fs_no = fsid_scc1_uart,
+ .brg = 1,
+ .tx_num_fifo = 4,
+ .tx_buf_size = 32,
+ .rx_num_fifo = 4,
+ .rx_buf_size = 32,
+ },
+ [fsid_scc4_uart] = {
+ .init_ioports = init_scc4_uart_ioports,
+ .fs_no = fsid_scc4_uart,
+ .brg = 4,
+ .tx_num_fifo = 4,
+ .tx_buf_size = 32,
+ .rx_num_fifo = 4,
+ .rx_buf_size = 32,
+ },
+};
static struct fs_mii_bus_info mii_bus_info = {
.method = fsmii_bitbang,
@@ -201,6 +225,55 @@ static void __init mpc8272ads_fixup_enet_pdata(struct platform_device *pdev,
}
}
+static void mpc8272ads_fixup_uart_pdata(struct platform_device *pdev,
+ int idx)
+{
+ bd_t *bd = (bd_t *) __res;
+ struct fs_uart_platform_info *pinfo;
+ int num = ARRAY_SIZE(mpc8272_uart_pdata);
+ int id = fs_uart_id_scc2fsid(idx);
+
+ /* no need to alter anything if console */
+ if ((id <= num) && (!pdev->dev.platform_data)) {
+ pinfo = &mpc8272_uart_pdata[id];
+ pinfo->uart_clk = bd->bi_intfreq;
+ pdev->dev.platform_data = pinfo;
+ }
+}
+
+static void init_scc1_uart_ioports(void)
+{
+ cpm2_map_t* immap = ioremap(CPM_MAP_ADDR, sizeof(cpm2_map_t));
+
+ /* SCC1 is only on port D */
+ setbits32(&immap->im_ioport.iop_ppard,0x00000003);
+ clrbits32(&immap->im_ioport.iop_psord,0x00000001);
+ setbits32(&immap->im_ioport.iop_psord,0x00000002);
+ clrbits32(&immap->im_ioport.iop_pdird,0x00000001);
+ setbits32(&immap->im_ioport.iop_pdird,0x00000002);
+
+ /* Wire BRG1 to SCC1 */
+ clrbits32(&immap->im_cpmux.cmx_scr,0x00ffffff);
+
+ iounmap(immap);
+}
+
+static void init_scc4_uart_ioports(void)
+{
+ cpm2_map_t* immap = ioremap(CPM_MAP_ADDR, sizeof(cpm2_map_t));
+
+ setbits32(&immap->im_ioport.iop_ppard,0x00000600);
+ clrbits32(&immap->im_ioport.iop_psord,0x00000600);
+ clrbits32(&immap->im_ioport.iop_pdird,0x00000200);
+ setbits32(&immap->im_ioport.iop_pdird,0x00000400);
+
+ /* Wire BRG4 to SCC4 */
+ clrbits32(&immap->im_cpmux.cmx_scr,0x000000ff);
+ setbits32(&immap->im_cpmux.cmx_scr,0x0000001b);
+
+ iounmap(immap);
+}
+
static int mpc8272ads_platform_notify(struct device *dev)
{
static const struct platform_notify_dev_map dev_map[] = {
@@ -209,6 +282,10 @@ static int mpc8272ads_platform_notify(struct device *dev)
.rtn = mpc8272ads_fixup_enet_pdata
},
{
+ .bus_id = "fsl-cpm-scc:uart",
+ .rtn = mpc
+ },
+ {
.bus_id = NULL
}
};
@@ -230,7 +307,44 @@ int __init mpc8272ads_init(void)
ppc_sys_device_enable(MPC82xx_CPM_FCC1);
ppc_sys_device_enable(MPC82xx_CPM_FCC2);
+ /* to be ready for console, let's attach pdata here */
+#ifdef CONFIG_SERIAL_CPM_SCC1
+ ppc_sys_device_setfunc(MPC82xx_CPM_SCC1, PPC_SYS_FUNC_UART);
+ ppc_sys_device_enable(MPC82xx_CPM_SCC1);
+
+#endif
+
+#ifdef CONFIG_SERIAL_CPM_SCC4
+ ppc_sys_device_setfunc(MPC82xx_CPM_SCC4, PPC_SYS_FUNC_UART);
+ ppc_sys_device_enable(MPC82xx_CPM_SCC4);
+#endif
+
+
return 0;
}
+/*
+ To prevent confusion, console selection is gross:
+ by 0 assumed SCC1 and by 1 assumed SCC4
+ */
+struct platform_device* early_uart_get_pdev(int index)
+{
+ bd_t *bd = (bd_t *) __res;
+ struct fs_uart_platform_info *pinfo;
+
+ struct platform_device* pdev = NULL;
+ if(index) { /*assume SCC4 here*/
+ pdev = &ppc_sys_platform_devices[MPC82xx_CPM_SCC4];
+ pinfo = &mpc8272<F12>_uart_pdata[1];
+ } else { /*over SCC1*/
+ pdev = &ppc_sys_platform_devices[MPC82xx_CPM_SCC1];
+ pinfo = &mpc8272_uart_pdata[0];
+ }
+
+ pinfo->uart_clk = bd->bi_intfreq;
+ pdev->dev.platform_data = pinfo;
+ ppc_sys_fixup_mem_resource(pdev, IMAP_ADDR);
+ return NULL;
+}
+
arch_initcall(mpc8272ads_init);